HIGH PRESSURE LOW DENSITY POLYETHYLENE RESINS WITH IMPROVED OPTICAL PROPERTIES PRODUCED THROUGH USE OF HIGHLY ACTIVE CHAIN TRANSFER AGENTS

Disclosed is an ethylene-based polymer with a density from about 0.90 to about 0.94 in grams per cubic centimeter, with a molecular weight distribution (M/M) from about 2 to about 30, a melt index (I) from about 0.1 to about 50 grams per 10 minutes, and further comprising sulfur from about 5 to about 4000 parts per million. The amount of sulfur is also determined based upon the total weight of the ethylene-based polymer. Also disclosed is process for making an ethylene-based polymer which includes the steps of splitting a process fluid for delivery into a tubular reactor; feeding an upstream process feed stream into a first reaction zone and at least one downstream process feed stream into at least one other reaction zone, where the process fluid has an average velocity of at least 10 meters per second; and initiating a free-radical polymerization reaction. 115-. (canceled)16. An ethylene-based polymer with long chain branching as characterized by a gpcBR value greater than 0.05 as determined by a gpcBR Branching Index and a GPC-LS Characterization value greater than 2.1 as determined by a GPC-LS Characterization method.17. The ethylene-based polymer of claim 16 , where the GPC-LS Characterization value is from about 2.1 to about 10.20. The ethylene-based polymer of claim 18 , where the ethylene-based polymer has long chain branching as characterized by a gpcBR value greater than 0.05 as determined by a gpcBR Branching Index by 3D-GPC method.22. The process of claim 21 , where the process fluid further comprises at least one chain transfer agent with a Cs less than 1.23. The process of claim 21 , where the upstream process feed stream has a CTA molar flow ratio from about 0.01 to about 100.24. The process of claim 21 , where the at least one chain transfer agent with a Cs greater than 1 has a concentration in the upstream process feed stream from about 1 molar ppm to about 600 molar ppm.25. The process of claim 21 , where the difference in the ethylene conversion ...

FUNCTIONALIZED OLEFIN INTERPOLYMERS, COMPOSITIONS AND ARTICLES PREPARED THEREFROM, AND METHODS FOR MAKING THE SAME

The invention provides compositions containing at least one functionalized polyolefin, and in particular, to compositions containing at least one functionalized ethylene interpolymer, which has a melt viscosity less than 50,000 cP at 350° F. (177° C.) and a molecular weight distribution (M/M) from about 1 to 5. The invention also provides adhesive formulations containing the same. The invention also relates to the preparation of the functionalized interpolymers, by reacting, for example, such an ethylene interpolymer with the following: a) at least one unsaturated compound, containing at least one heteroatom, and b) at least one initiator. 157-. (canceled)58. A composition comprising at least one functionalized ethylene interpolymer and at least one functionalized propylene interpolymer , and wherein the at least one functionalized ethylene interpolymer has a melt viscosity less than 50 ,000 cP at 350° F. (177° C.).59. The composition of claim 58 , wherein the at least one functionalized ethylene interpolymer is formed from an ethylene interpolymer that has a molecular weight distribution (M/M) from 1 to 5.60. The composition of claim 58 , wherein the at least one functionalized ethylene interpolymer is formed from an ethylene interpolymer containing a ratio of terminal vinyl groups to the sum of all unsaturation from 0.001 to 0.5 claim 58 , as determined by H NMR.61. The composition of claim 58 , wherein the at least one functionalized ethylene interpolymer is formed from an ethylene interpolymer containing a ratio of terminal vinyl groups to the sum of all unsaturation from 0.01 to 0.40 claim 58 , as determined by H NMR.62. The composition of claim 58 , wherein the at least one functionalized ethylene interpolymer is formed from an ethylene interpolymer containing a ratio of terminal vinyl groups to the sum of all unsaturation from 0.10 to 0.30 claim 58 , as determined by H NMR.63. The composition of claim 58 , further comprising at least one tackifier.64. The ...

Liquid and gel-like low molecular weight ethylene polymers

The subject invention pertains to homogeneous liquid low molecular weight ethylene/alpha-olefin polymers having a number average molecular weight (Mn) as determined by gel permeation chromatography, of less than 25,000, a total crystallinity, as measured by DSC, of less than 10%, and a pour point, as measured by ASTM D97, of less than 50° C. The subject invention also pertains to homogeneous gel-like low molecular weight ethylene/alpha-olefin polymers having a number average molecular weight (Mn) as determined by gel permeation chromatography, of less than 25,000, a total crystallinity, as measured by DSC, of less than 50%, and a pour point, as measured by ASTM D97, of less than 90° C.

LOW DENSITY ETHYLENE-BASED POLYMER COMPOSITIONS WITH HIGH MELT STRENGTH AND MID-HIGH DENSITY CONTROL

The invention provides a composition comprising a first ethylene-based polymer, formed by a high pressure, free-radical polymerization process, and a second ethylene-based polymer, formed by a high pressure, free-radical polymerization process, such composition comprising the following properties: 114-. (canceled)15. A composition comprising a first ethylene-based polymer , formed by a high pressure , free-radical polymerization process , and a second ethylene-based polymer , formed by a high pressure , free-radical polymerization process , such composition comprising the following properties:a) a melt index (12) from 2.0 to 10 dg/min;b) a density from 0.922 to 0.935 g/cc; andwherein the second ethylene-based polymer is present in an amount from 60 to 95 weight percent, based on the sum of the weight of the first ethylene-based polymer and the second ethylene-based polymer; andwherein the second ethylene-based polymer has a density greater than, or equal to, 0.924 g/cc; andwherein the first ethylene-based polymer has a melt index less than 2.5 dg/min; andwherein the first ethylene-based polymer is formed in a tubular reactor comprising at least three reaction zones.16. The composition of claim 15 , wherein the first ethylene-based polymer has a melt index less than 2.0 dg/min.17. The composition of claim 15 , wherein the second ethylene-based polymer is present in an amount from 70 to 92 weight percent claim 15 , based on the sum of the weight of the first polymer and the second polymer.18. The composition of claim 15 , wherein the first ethylene-based polymer has a Melt Strength greater than claim 15 , or equal to claim 15 , 15 cN.19. The composition of claim 15 , wherein the second ethylene-based polymer has a melt index from 2.0 to 50 dg/min.20. The composition of claim 15 , wherein the second ethylene-based polymer has a melt index from 3.0 to 30 dg/min.21. The composition of claim 15 , wherein the composition has a hexane extractable content less than 5.5 wt %. ...

Low Molecular Weight Ethylene Interpolymers, Methods of Making, and Uses Thereof

The invention provides a comprising one or more ethylene interpolymers, and wherein the interpolymers, or the composition, has a melt viscosity from 1 to 30,000 cP at 177° C., and wherein at least one ethylene interpolymer has an Rv from 0.3 to 0.99. The invention further provides a composition comprising at least one low molecular weight (LMW) ethylene interpolymer, and at least one high molecular weight (HMW) ethylene interpolymer, and wherein the composition has a melt viscosity from 1 to 30,000 cP at 177° C., and wherein the sum of the Rv from the low molecular weight interpolymer and the high molecular weight interpolymer is from 0.3 to 2. The invention further provides for processes of making such compositions, processes for functionalizing the interpolymer(s) of such compositions, and articles comprising at least one component prepared from an inventive composition.

MULTILAYER FILMS AND ARTICLES COMPRISING MULTILAYER FILMS

Embodiments of the present invention relate to multilayer films and articles. In one aspect, a multilayer film comprises at least one outer layer comprising at least 50 wt % of a polyethylene composition comprising the reaction product of ethylene and optionally, one or more alpha-olefin comonomers, wherein the polyethylene composition is characterized by the following properties: a. a melt index, I, of from 0.3 to 3.0 g/10 min; b. a density of from 0.950 to 0.965 g/cm; c. a melt flow ratio, I/I, of from 6.3 to 7.5; and d. a molecular weight distribution (MWD) of from 2.2 to 3.5, wherein the multilayer film has a thickness of at least 2 mils, wherein the multilayer film comprises at least 50% by weight polyethylene, wherein the multilayer film exhibits a surface haze of 13.5% or less when measured according to ASTM 1003-07, and wherein the multilayer film exhibit a water vapor transmission rate of 0.7 g-mil/100 in/day or less when measured according to ASTM F1249-06 at a temperature of 38° C. and a relative humidity of 100%. 2. The multilayer film of further comprising an inner layer claim 1 , wherein the inner layer comprises ethylene vinyl alcohol copolymer or polyamide.3. The multilayer film of claim 2 , wherein the multilayer film comprises 30 weight percent or less ethylene vinyl alcohol copolymer and polyamide based on the total weight of the multilayer film.4. The multilayer film of a claim 1 , wherein the multilayer film comprises less than 5% by weight ethylene vinyl alcohol copolymer and polyamide.5. A multilayer film comprising: [{'sub': '2', 'a. a melt index, I, of from 0.3 to 3.0 g/10 min;'}, {'sup': '3', 'b. a density of from 0.950 to 0.965 g/cm;'}, {'sub': 10', '2, 'c. a melt flow ratio, I/I, of from 6.3 to 7.5; and'}, 'd. a molecular weight distribution (MWD) of from 2.2 to 3.5,, 'at least one outer layer comprising at least 50 wt % of a polyethylene composition comprising the reaction product of ethylene and optionally, one or more alpha-olefin ...

Ethylene/CO interpolymers and processes to make the same

A composition comprising an ethylene/CO interpolymer, formed from a high pressure, free-radical polymerization, and wherein the ethylene/CO interpolymer has the following properties: a) a CO content from “greater than 0” weight percent to less than, or equal to, 10 weight percent CO (carbon monoxide), based on the weight of the interpolymer; and b) a melting point, Tm, in ° C. that meets the following relationship: Tm (° C.)≤601.4*(Density in g/cc)−452.5(° C.).

Polyolefin composition with molecular weight maximum occuring in that part of the composition that has the highest comonomer content

Ethylene-based polymers with new distributions of terminal and internal unsaturations

A high pressure, free radical polymerization process to form an ethylene-based polymer, the process comprising at least the following step: polymerizing a reaction mixture comprising ethylene, using a polymerization system comprising the following: (A) a reactor configuration comprising at least one reactor that comprises at least two reaction zones, a first reaction zone (reaction zone 1) and an ith reaction zone (where i≥2); wherein the ith reaction zone is the last reaction zone, and wherein i is the total number of reaction zones; (B) at least two ethylene-based feed streams, a first ethylene-based feed stream and an nth ethylene-based feed stream, wherein the first ethylene-based feed stream is sent to the first reaction zone, and the nth ethylene-based feed stream is the last ethylene based feed stream sent to the reactor configuration; wherein n≤i; and RZn/RZ1 does not equal 1.0, where RZ1=mole fraction of make-up ethylene in the first ethylene-based feed stream to the first reaction ...

Long chain branched (LCB), block, or interconnected copolymers of ethylene in combination with one other polymer

An ethylenic polymer comprising amyl groups from about 0.1 to about 2.0 units per 1000 carbon atoms as determined by Nuclear Magnetic Resonance and both a peak melting temperature, Tm, in ° C., and a heat of fusion, Hf, in J/g, as determined by DSC Crystallinity, where the numerical values of Tm and Hf correspond to the relationship Tm>=(0.2143*Hf)+79.643. An ethylenic polymer comprising at least one preparative TREF fraction that elutes at 95° C. or greater using a Preparative Temperature Rising Elution Fractionation method, where at least one preparative TREF fraction that elutes at 95° C. or greater has a gpcBR value greater than 0.05 and less than 5 as determined by gpcBR Branching Index by 3D-GPC, and where at least 5% of the ethylenic polymer elutes at a temperature of 95° C. or greater based upon the total weight of the ethylenic polymer.

AN ETHYLENE/ALPHA-OLEFIN INTERPOLYMER COMPOSITION

The instant invention provides an ethylene/alpha-olefin interpolymer composition suitable for blown film applications, and blown films made therefrom. The ethylene/alpha-olefin interpolymer composition suitable for blown film applications according to the present invention comprises greater than 80 percent by weight of units derived from ethylene and 20 percent or less by weight of units derived from one or more alpha olefin co-monomers, wherein said ethylene/alpha-olefin interpolymer has a density in the range of from 0.910 to 0.918 g/cm 3 , a melt index I 2 in the range of from 0.5 to 1.1 g/10 minutes, a melt flow ratio I 10 /I 2 in the range of from 8 to 10, a melt strength in the range of from 3 to 6 cN, a highest temperature fraction in the range of from 11 to 14 percent determined by CEF, a highest peak temperature fraction by CEF in range of from 96 to 100° C., and a lowest temperature fraction from CEF in the range of from 2 to 5 percent, and a DSC heat curve having three melting peaks with a highest temperature melting peak in the range of from 120 to 124° C., a crystallinity in the range of from 40 to 50 percent.

Functionalized olefin interpolymers, compositions and articles prepared therefrom, and methods for making the same

The invention provides compositions containing at least one functionalized polyolefin, and in particular, to compositions containing at least one functionalized ethylene interpolymer, which has a melt viscosity less than 50,000 cP at 350° F. (177° C.) and a molecular weight distribution (Mw/Mn) from about 1 to 5. The invention also provides adhesive formulations containing the same. The invention also relates to the preparation of the functionalized interpolymers, by reacting, for example, such an ethylene interpolymer with the following: a) at least one unsaturated compound, containing at least one heteroatom, and b) at least one initiator.

ETHYLENE-BASED POLYMER COMPOSITION

An ethylene-based polymer composition has been discovered and is characterized by a Comonomer Distribution Constant greater than about 45. The new ethylene-based polymer compositions are useful for making many articles, especially including films. The polymers are made using a metal complex of a polyvalent aryloxyether. 1. An ethylene-based polymer composition characterized by a Comonomer Distribution Constant greater than about 45 and as high as 400 , wherein the composition has less than 120 total unsaturation unit/1 ,000 ,000 C.2. The polymer composition of wherein the composition comprises up to about 3 long chain branches/1000 carbons.3. The polymer composition of having a ZSVR of at least 2.4. The polymer of further characterized by comprising less than 20 vinylidene unsaturation unit/1 claim 3 ,000 claim 3 ,000 C.5. The polymer composition of where in the composition has a bimodal molecular weight distribution.6. The polymer composition of where in the composition has a multi-modal MWD.7. A fabricated article comprising the composition of .8. The polymer composition of further comprising a single DSC melting peak.9. A thermoplastic formulation comprising the composition of and at least one natural or synthetic polymer.10. The formulation of wherein a film comprising the formulation is characterized as having a yellowness b* change over 10 days of 3 or less.11. The formulation of wherein the ethylene-based composition comprises from about 60 to about 95 percent by weight of the formulation.12. The composition of claim 1 , wherein said composition has been at least partially cross-linked (at least 5 wt % gel).13. The composition of wherein the composition has a comonomer distribution profile comprising a mono or bimodal distribution from 35° C. to 120° C. claim 1 , excluding purge.14. The polymer composition of comprising Mw from about 17 claim 1 ,000 to about 220 claim 1 ,000 g/mol.15. (canceled)17. The fabricated article of in the form of at least one film ...

Ethylene-based polymers with low hexane extractables and low densities

Ethylene-based polymers comprising the following properties: (A) a density less than 0.9190 g/cc; (B) a hexane extractable level that meets the following equation: hexane extractable level ≤A+B [log(12)], where A=2.65 wt %, and B—0.25 wt %[log (dg/min)]; based on total weight of the ethylene-based polymer; (C) a G′ (at G″=500 Pa, 1 70° C.) that meets the following equation: G′≥C+D [log(12)], where C=150 Pa, and D=−60 Pa/[log(dg/min)]; and (D) a melt index (12) from 0.7 to 20 dg/min; are made in high pressure tubular process that comprises at least three reaction zones with the peak polymerization temperature of the first reaction zone ≥320° C. and the peak polymerization temperature of the last reaction zone ≤290° C.

LOW DENSITY ETHYLENE-BASED POLYMERS WITH HIGH MELT STRENGTH

The invention provides a composition comprising a first ethylene-based polymer, formed by a high pressure, free-radical polymerization process, and comprising the following properties: 115-. (canceled)16. A composition comprising a first ethylene-based polymer , formed by a high pressure , free-radical polymerization process , and comprising the following properties:{'sup': B', '2', 'B, 'a) a Mw(abs) versus I2 realtionship: Mw(abs) Подробнее

Ziegler-Natta catalysts for the production of polyethylene

The heterogeneous procatalyst of this disclosure includes a titanium species; a hydrocarbon soluble transition metal compound having a structure M(OR1)z; a chlorinating agent having a structure A(Cl)x(R2)3-x, and a magnesium chloride component. M of M(OR1)zis a non-reducing transition metal other than titanium, the non-reducing transition metal being in an oxidation state of +2 or +3. Each R1is independently (C1-C30)hydrocarbyl or —C(O)R11, where R11is (C1-C30)hydrocarbyl. Subscript z of M(OR1)zis 2 or 3. Each R1and R11may be optionally substituted with one or more than one halogen atoms, or one or more than one —Si(RS)3, where each RSis (C1-C30)hydrocarbyl. A of A(Cl)x(R2)3-xis aluminum or boron; R2is (C1-C30)hydrocarbyl; and x is 1, 2, or 3; and a magnesium chloride component.

HIGH PRESSURE LOW DENSITY POLYETHYLENE RESINS WITH IMPROVED OPTICAL PROPERTIES PRODUCED THROUGH USE OF HIGHLY ACTIVE CHAIN TRANSFER AGENTS

Disclosed is an ethylene-based polymer with a density from about 0.90 to about 0.94 in grams per cubic centimeter, with a molecular weight distribution (Mw/Mn) from about 2 to about 30, a melt index (I2) from about 0.1 to about 50 grams per 10 minutes, and further comprising sulfur from about 5 to about 4000 parts per million. The amount of sulfur is also determined based upon the total weight of the ethylene-based polymer. Also disclosed is process for making an ethylene-based polymer which includes the steps of splitting a process fluid for delivery into a tubular reactor; feeding an upstream process feed stream into a first reaction zone and at least one downstream process feed stream into at least one other reaction zone, where the process fluid has an average velocity of at least 10 meters per second; and initiating a free-radical polymerization reaction.

TPO blends containing multimodal elastomers

Ethylene-based polymers and processes to make the same

The invention provides a composition comprising an ethylene-based polymer, wherein the ethylene-based polymer comprises the following properties: a) a Mw(abs)/Mw(conv) >2.60; and b) a CDFRIR (at Mw<10,000 g/mole) >0.145.

Interconnected Copolymers of Ethylene in Combination with one other Polyalkene

A polymer comprises units derived from ethylene and polyalkylene, the polymer having at least 0.15 units of amyl groups per 1000 carbon atoms as determined by 13C Nuclear Magnetic Resonance (NMR). 1. A polymer comprising units derived from ethylene and polyalkylene the polymer having at least 0.15 units of amyl groups per 1000 carbon atoms as determined by C Nuclear Magnetic Resonance (NMR).2. The polymer of comprising a portion of the ethylene bonded to one or more carbon atoms of the polyalkylene.3. The polymer of wherein the polymer comprises at least one ethylene-based polymeric branch bonded to a carbon atom of the polyalkylene.4. The polymer of in which the polymer comprises no appreciable methyl branches as determined by C NMR.5. The polymer of in which the polymer comprises no appreciable propyl branches as determined by C NMR.6. The polymer of having a density of at least 0.91 g/cm.7. The polymer of in which less than 70 weight percent of the polyalkylene is extractable by solvent extraction.8. The polymer of having an Iof less than 10.9. The polymer of having a viscosity ratio V 0.1/V 100 of at least 15.10. A composition comprising the polymer of .11. An article comprising at least one component formed from the composition of .12. The article of in the form of a film.13. A process to form a polymer comprising units derived from ethylene and polyalkylene claim 11 , the process comprising:A. Contacting at least one polyalkylene with ethylene in the presence of a free-radical initiator in a first reactor or a first part of a multi-part reactor; andB. Reacting the polyalkylene with additional ethylene in the presence of the free-radical initiator to form an ethylene-based polymeric branch bonded to the polyalkylene in at least one other reactor or a later part of the multi- part reactor.14. The process of in which the ethylene-based polymeric branch is formed by an ethylene monomer bonding with the polyalkylene to form a ethylene- polyalkylene moiety claim 13 ...

Multilayer films and methods thereof

Embodiments disclosed herein include multilayer films having a cling layer and a release layer, wherein the cling layer comprises (i) an ethylene/alpha-olefin elastomer, and (ii) a polyethylene polymer selected from ultra-low density polyethylene, a very low density polyethylene, or combinations thereof, and the release layer comprises a low density polyethylene (LDPE) having a density of from 0.915 to 0.930 g/cc, a melt index, I2, of from 1.0 to 30.0 g/10 min, and a molecular weight distribution, (Mw/Mn), as measured by the conventional calibration of triple detector gel permeation chromatography, of from 3.0 to less than 7.0.

Functionalized Ethylene/Alpha-Olefin Interpolymer Compositions

The invention relates to functionalized interpolymers derived from base olefin interpolymers, which are prepared by polymerizing one or more monomers or mixtures of monomers, such as ethylene and one or more comonomers, to form an interpolymer products having unique physical properties. The functionalized olefin interpolymers contain two or more differing regions or segments (blocks), resulting in unique processing and physical properties.

Interconnected copolymers of ethylene in combination with one other polyalkene

A polymer comprises units derived from ethylene and polyalkylene, the polymer having at least 0.15 units of amyl groups per 1000 carbon atoms as determined by 13C Nuclear Magnetic Resonance (NMR).

Compositions Exhibiting High ESCR and Comprising Monovinylidene Aromatic Polymers and Olefinic Copolymers Containing Unsaturation

Compositions comprising (a) a monovinylidene aromatic polymer, e.g., HIPS, and (b) an ethylene/alpha-olefin (EAO) copolymer, e.g., an ethylene-propylene copolymer, that satisfies the mathematical relationship: y20+2.35x in which y is the ethylene content in mole percent (mol %) of the EAO copolymer and x is the Brookfield viscosity in centipoise (cP) at 10O° C. of the EAO copolymer and the viscosity is at least 1 centipoise (cP), exhibit improved environmental stress crack resistance as compared to compositions containing monovinyiidene aromatic polymers but without such an EAO copolymer. The compositions are useful in the manufacture of articles, e.g., refrigerator liners and food packaging, which come in contact with the oils contained in various food stuffs.

Highly filled polymer compositions

This invention pertains to highly filled polymer compositions comprising a low molecular weight ethylene and/or alpha olefin homopolymers and copolymers, or blends therefrom, filled with high concentrations of fillers or additives. Examples of such fillers or additives include fire retardants, talc, ceramic manufacturing agents, color concentrates, crosslinking agents, and blowing agents. Because of the low crystallinity (and therefore high percentage of amorphous phase) and low viscosities of the base polymers, highly processable compositions can be formed containing even if containing relatively high loadings of fillers or additives. Such highly filled compositions are thus ideally suited as concentrates or masterbatch formulations for a variety of different compounding applications.

LOW DENSITY ETHYLENE-BASED POLYMERS WITH BROAD MOLECULAR WEIGHT DISTRIBUTIONS AND LOW EXTRACTABLES

The invention provides an ethylene-based polymer comprising the following properties: 115-. (canceled)16. An ethylene-based polymer comprising the following properties:a) a melt index (I2)≧2.0 dg/min;{'sup': 5', '3, 'b) a Mw(abs) versus I2 relationship: Mw(abs) Подробнее

Interpolymers suitable for use in hot melt adhesives and processes to prepare the same

The present invention relates to an ethylene/α-olefin interpolymer product comprising at least one α-olefin interpolymerized with ethylene and, characterized in at least one aspect, as having improved properties when utilized in a hot melt adhesive formulation. The invention also relates to a process for manufacturing the interpolymer product wherein the process comprises employing two or more single site catalyst systems in at least one reaction environment (or reactor) and wherein the at least two catalyst systems have (a) different comonomer incorporation capabilities or reactivities and/or (b) different termination kinetics, both when measured under the same polymerization conditions. The interpolymer products are useful, for example, in applications such as hot melt adhesives, and also for impact, bitumen and asphalt modification, adhesives, dispersions or latexes and fabricated articles such as, but not limited to, foams, films, sheet, moldings, thermoforms, profiles and fibers.

Processes to prepare ethylene-based polymer compositions

The invention provides a process to form an ethylene-based polymer composition, the process comprising at least the following: Step 1: polymerizing a first ethylene-based polymer in the presence of at least one molecular catalyst and a hydrocarbon chain transfer agent, and at a polymerization pressure of at least 14,000 psi; Step 2: polymerizing a second ethylene-based polymer.

Low density ethylene-based polymers with broad molecular weight distributions and low extractables

The invention provides an ethylene-based polymer comprising the following properties: a) a melt index (I2)≧2.0 dg/min; b) a Mw(abs) versus I2 relationship: Mw(abs) Подробнее

ETHYLENE-BASED POLYMERS WITH IMPROVED OPTICS

A composition comprising an ethylene-based polymer, wherein the ethylene-based polymer comprises the following properties: a) an Mw(abs) from 130,000 to 162,000 g/mol; b) a melt index (I2) from 1.5 to 3.0 g/10 min; c) an ADF LS from 0.350 to 0.450 for molecular weight ≥500,000 g/mol. 1. A composition comprising an ethylene-based polymer , wherein the ethylene-based polymer comprises the following properties:a) an Mw(abs) from 130,000 to 162,000 g/mol;b) a melt index (12) from 1.5 to 3.0 g/10 min; andc) an ADF LS from 0.350 to 0.450 for molecular weight ≥500,000 g/mol.2. The composition of claim 1 , wherein the ethylene-based polymer further comprises an ADF IR from 0.200 to 0.250 for molecular weight ≤15 claim 1 ,000 g/mol.3. The composition of claim 1 , wherein the ethylene-based polymer further comprises an ADF DV from 0.180 to 0.240 for molecular weight ≥200 claim 1 ,000 g/mol.4. The composition of claim 1 , wherein the ethylene-based polymer further comprises an ADF DV ≤0.210 for molecular weight ≥200 claim 1 ,000 g/mol.5. The composition of claim 1 , wherein the ethylene-based polymer has a density is from 0.923 to 0.927 g/cc (1 cc=1 cm).6. The composition of claim 1 , wherein the ethylene-based polymer has a 45° gloss ≥72% claim 1 , and a 2% MD secant mod. >30 claim 1 ,000 psi claim 1 , for a 2.0±0.3 mil film thickness.7. The composition of claim 1 , wherein the ethylene-based polymer has a ratio of MD shrink tension to CD shrink tension of less than 7.0 with a CD shrink tension greater than 0.9 claim 1 , each for a 2.0±0.3 mil film thickness.8. The composition of claim 1 , wherein the ethylene-based polymer is an LDPE.9. The composition of claim 1 , wherein the composition comprises a second ethylene-based polymer.10. An article comprising at least one component formed from the composition of . This application claimes the benefit of U.S. Provisional Application 62/474,134, filed on Mar. 21, 2017.There is a need for a LDPE resin that has good optics and good ...

Ethylene-Based Polymers with Low Hexane Extractables

Ethylene-based polymers comprising the following properties: (A) a density from 0.9190 g/cc to 0.9240 g/cc; (B) a hexane extractable level that is less than or equal to the lower of: (1) (A+(B*density (g/cc))+(C*log(MI) dg/min)) based on total weight of the ethylene-based polymer; where A=250.5 wt %, B=−270 wt %/(g/cc), C=0.25 wt %/[log(dg/min)], or (2) 2.0 wt %; (C) a G′ (at G″=500 Pa, 170° C.) that meets the following equation: G′≥D+E[log (12)], where D=150 Pa and E=−60 Pa/[log(dg/min)]; and (D) a melt index (12) from 1.0 to 20 dg/min; are made in process comprising the step of contacting in a reaction configuration, comprising a first tubular reaction zone 1 and a last tubular reaction zone i, in which i is greater than or equal to (≥) 3, under high pressure polymerization conditions, and in which the first reaction zone 1 has a peak polymerization temperature greater than the peak temperature of the ith reaction zone, and wherein the difference in these two peak temperatures is ≥30° C. 1. An ethylene-based polymer formed from a free-radical , high pressure polymerization process that includes a reactor configuration comprising , as reactors , only one or more tubular reactors , said polymer comprising the following properties:(A) a density from 0.9190 g/cc to 0.9240 g/cc; (1) (A+(B*density (g/cc))+(C*log(MI) dg/min)) based on total weight of the ethylene-based polymer; where A=250.5 wt %, B=−270 wt %/(g/cc), C=0.25 wt %/[log(dg/min)], or', '(2) 2.0 wt %;, '(B) a hexane extractable level that is less than or equal to the lower of(C) a G′ (at G″ =500 Pa, 170° C.) that meets the following equation: G′≥D+E[log (I2)], where D=150 Pa and E=−60 Pa/[log(dg/min)]; and(D) a melt index (I2) from 1.0 to 20 dg/min.2. The ethylene-based polymer of claim 1 , wherein the polymer is polymerized in the presence of at least one branching agent.3. The ethylene-based polymer of claim 2 , wherein the branching agent is at least one of a monomeric CTA and a polyene.4. The ethylene- ...

Polypropylene-Based Adhesive Compositions

An adhesive composition comprising a copolymer of propylene and at least one comonomer selected from the group consisting of ethylene and C 4-20 α-olefins, the copolymer having (i) a content of units derived from propylene of greater than about 50 mole percent, (ii) a Brookfield viscosity at 190 C from about 50 to about 100,000 cP, (iii) an MWD from about 1.5 to about 15, and (iv) containing less than about 50 ppm residual catalyst metal.

POLYETHYLENE BLEND COMPOSITION SUITABLE FOR BLOWN FILM, METHOD OF PRODUCING THE SAME, AND FILMS MADE THEREFROM

The instant invention provides a polyethylene blend composition suitable for blown film, method of producing the same, and films made therefrom. The polyethylene blend composition suitable for blown film according to the present invention comprises the melt blending product of: (a) less than or equal to 4 percent by weight of a low density polyethylene (LDPE) having a density in the range of from 0.915 to 0.935 g/cm 3 , and a melt index (I 2 ) in the range of from greater than 0.8 to less than or equal to 5 g/10 minutes, and a molecular weight distribution (M w /M n ) in the range of from 6 to 10; (b) 90 percent or greater by weight of a heterogenous linear low density polyethylene (hLLDPE) having a density in the range of from 0.917 to 0.950 g/cm 3 , and a melt index (I 2 ) in the range of from 0.1 to less than or equal to 5 g/10 minutes; (c) optionally a hydrotalcite based neutralizing agent; (d) optionally one or more nucleating agents; and (e) optionally one or more antioxidants. When the polyethylene blend-composition is formed into a film via blown film process, the output rate is improved at least 6 percent relative to a similar linear low density polyethylene.

Polyethylene blend composition suitable for blown film, method of producing the same, and films made therefrom

The instant invention provides a polyethylene blend composition suitable for blown film, method of producing the same, and films made therefrom. The polyethylene blend composition suitable for blown film according to the present invention comprises the melt blending product of: (a) less than or equal to 4 percent by weight of a low density polyethylene (LDPE) having a density in the range of from 0.915 to 0.935 g/cm3, and a melt index (I2) in the range of from greater than 0.8 to less than or equal to 5 g/10 minutes, and a molecular weight distribution (Mw/Mn) in the range of from 6 to 10; (b) 90 percent or greater by weight of a heterogenous linear low density polyethylene (hLLDPE) having a density in the range of from 0.917 to 0.950 g/cm3, and a melt index (I2) in the range of from 0.1 to less than or equal to 5 g/10 minutes; (c) optionally a hydrotalcite based neutralizing agent; (d) optionally one or more nucleating agents; and (e) optionally one or more antioxidants. When the polyethylene ...

MONO- AND MULTI-LAYER FILMS AND ARTICLES MADE THEREFROM

Mono- and multi-layer films comprising a polyethylene composition which comprises the reaction product of ethylene and optionally one or more alpha olefin comonomers in the presence of a catalyst composition comprising a multi-metallic procatalyst via a solution polymerization process in at least one reactor; wherein said polyethylene composition is characterized by one or more of the following properties: a melt index, I 2 , measured according to ASTM D 1238 (2.16 kg@190° C.), from 0.1 to 5 g/10 min; density, measured according to ASTM D-792, from 0.910 to 0.935 g/cc; melt flow ratio, I 10 /I 2 , wherein I 10 is measured according to ASTM D1238 (10 kg@190° C.), from 6 to 7.4; and molecular weight distribution, (M w /M n ) from 2.5 to 3.5 are provided. Also provided are articles made from the mono- and/or multi-layer films.

Interconnected copolymers of ethylene in combination with at least one polysiloxane

The invention provides a polymer comprising units derived from ethylene and siloxane, polymer having at least 0.15 units of amyl groups per 1000 carbon atoms as determined by 13C Nuclear Magnetic Resonance (NMR).

Process to produce enhanced melt strength ethylene/alpha-olefin copolymers and articles thereof

An ethylene/α-olefin copolymer comprising units derived from ethylene; and units derived from at least one α-olefin; wherein the ethylene/α-olefin copolymer has a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; an Mw/Mn of from 3 to 5; and from 300 to 500 vinyl unsaturations per 1,000,000 carbon atoms in the ethylene/α-olefin copolymer is provided. Also provided is a process for producing an ethylene/α-olefin copolymer comprising: (1) polymerizing ethylene and one or more α-olefins in a polymerization reactor; (2) thereby producing an enhanced melt strength ethylene/α-olefin copolymer having from 300 to 500 vinyl unsaturation units per 1,000,000 carbon atoms, a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; and a Mw/Mn of from 3 to 5.

Adhesive and marking compositions made from interpolymers of ethylene/-olefins

An adhesive composition comprises: (i) at least one ethylene/-olefin interpolymer, (ii) at least one tackifÊer; and (iii) optionally at least one additive, such as a plasticizer, wax and antioxidant. Preferably, the ethylene/-olefin interpolymer has a Mw/Mn from about 1.7 to about 3.5, at least one melting point, Tm, in degrees Celsius, and a density, d, in grams/cubic centimeter, wherein the numerical values of Tm and d correspond to the relationship: Tm858.911825.3(d)+1112.8(d)2. The composition has relatively higher SAFT temperature and can be used in hot melt adhesives pressure-sensitive adhesives, and thermoplastic marking paints.

Process to visbreak propylene-based polymers with C—C initiators

The invention provides a process to prepare a second propylene-based polymer from a first propylene-based polymer, each propylene-based polymer having a melt flow rate (MFR; 2.16 kg/230° C.) with the MFR of the second propylene-based polymer greater than the MFR of the first propylene-based polymer, the process comprising the step of contacting under visbreaking conditions the first propylene-based polymer with at least one carbon-carbon (C—C) free-radical initiator of Structure (I): (Structure (I)) wherein R1, R2, R3, R4, R5 and R6 are each, independently, a hydrocarbyl group or a substituted hydrocarbyl group, and wherein, optionally, two or more R groups (R1, R2, R3, R4, R5 and R6) form a ring structure.

ETHYLENE-BASED POLYMERS AND PROCESSES TO MAKE THE SAME

An ethylene-based polymer, which is a low density polyethylene (LDPE), obtained by free radical polymerization of ethylene, and wherein the LDPE has a GPC parameter “LSP” less than 1.60. 1. A composition comprising an ethylene-based polymer , which is a low density polyethylene (LDPE) , obtained by free radical polymerization of ethylene , and wherein the LDPE has a GPC parameter “LSP” less than 1.60.2. The composition of claim 1 , wherein the LDPE has a gpcBR value from 1.50 to 2.25.3. A composition comprising an ethylene-based polymer that comprises the following features:a) at least 0.1 amyl groups per 1000 total carbon atoms;b) a melt index of 0.01 to 0.3;c) a z-average molecular weight of Mz (cony) of greater than 350,000 g/mol and less than 425,000 g/mol;d) a gpcBR value from 1.50 to 2.05, ande) a MWD(conv) [Mw(conv)/Mn(conv)] from 6 to 9.4. A composition comprising an ethylene-based polymer that comprises the following features:a) at least 0.1 amyl groups per 1000 total carbon atoms;b) a melt viscosity ratio (V0.1/V100), at 190° C., greater than, or equal to, 58;c) a melt viscosity at 0.1 rad/s, 190° C., greater than, or equal to, 40,000 Pa·s, andd) a gpcBR value from 1.50 to 2.25.5. The composition of claim 3 , wherein the ethylene-based polymer has a GPC-Light Scattering parameter “LSP” less than 2.0.6. The composition of claim 1 , wherein the polymer has a melt strength greater than 15 cN and less than 25 cN.7. The composition of claim 1 , wherein the polymer has a MWD(conv) from 5 to 8.8. The composition of claim 1 , wherein the polymer has a melt index (2) from 0.01 to 1 g/10 min.9. The composition of claim 1 , wherein the polymer has a density from 0.910 to 0.940 g/cc.10. The composition of claim 1 , wherein the polymer has a melt strength of at least 15 cN and less than 21 cN claim 1 , and a velocity at break of greater than 40 mm/s.11. The composition of claim 1 , wherein the polymer has a viscosity ratio (V0.1/V100 claim 1 , at 190° C.) greater than ...

POLYETHLENE BLEND COMPOSITION SUITABLE FOR BLOWN FILM, METHOD OF PRODUCING THE SAME, AND FILMS MADE THEREFORM

The instant invention provides a polyethylene blend composition suitable for blown film, method of producing the same, and films made therefrom. The polyethylene blend composition suitable for blown film, according to the present invention, comprises the melt blending product of: (a) from 5 percent or less by weight of a first low density polyethylene (first LDPE) having a density in the range of from 0.915 to 0.935 g/cm, and a melt index (I) in the range of from greater than 0.8 to less than or equal to 5 g/10 minutes, and a molecular weight distribution (Mw/Mn) in the range of from 6 to 10; (b) from 5 to 50 percent by weight of a second low density polyethylene (second LDPE) having a density in the range of from 0.915 to 0.935 g/cm, and a melt index (I2) in the range of from 0.1 to less than or equal to 5 g/10 minutes, and a molecular weight distribution (Mw/Mn) in the range of from 6 to 10; with the proviso that the second LDPE has a melt index (I2) that is different from the melt index (I2) of first LDPE; (c) from 44 percent or greater by weight of a heterogeneous linear low density polyethylene (hLLDPE) having a density in the range of from 0.917 to 0.950 g/cm, and a melt index (I2) in the range of from 0.1 to less than or equal to 5 g/10 minutes; (d) optionally a hydrotalcite based neutralizing agent (e) optionally one or more nucleating agents; and (f) optionally one or more antioxidants. When said polyethylene blend-composition is formed into a film via a blown film process, the output rate is improved at least 6 percent, for example 7 percent, relative to a polyethylene blend composition consisting essentially of (a) a similar heterogeneous linear low density polyethylene component; and (b) a similar second low density polyethylene component. 1. A polyethylene blend composition suitable for blown film comprising the melt blending product of:{'sup': '3', 'sub': 2', 'w', 'n, 'from 5 percent or less by weight of a first low density polyethylene having a ...

Ethylene-based polymer composition

An ethylene-based polymer composition has been discovered and is characterized by a Comonomer Distribution Constant greater than about 45. The new ethylene-based polymer compositions are useful for making many articles, especially including films. The polymers are made using a metal complex of a polyvalent aryloxyether.

Adhesive and Marking Compositions Made From Interpolymers of Ethylene/Alpha-Olefins

An adhesive composition comprises: (i) at least one ethylene/α-olefin interpolymer, (ii) at least one tackifÊer; and (iii) optionally at least one additive, such as a plasticizer, wax and antioxidant. Preferably, the ethylene/α-olefin interpolymer has a Mw/Mn from about 1.7 to about 3.5, at least one melting point, Tm, in degrees Celsius, and a density, d, in grams/cubic centimeter, wherein the numerical values of Tm and d correspond to the relationship: Tm≧858.91−1825.3(d)+1112.8(d)2. The composition has relatively higher SAFT temperature and can be used in hot melt adhesives pressure-sensitive adhesives, and thermoplastic marking paints.

LOW DENSITY ETHYLENE-BASED POLYMER COMPOSITIONS WITH HIGH MELT STRENGTH AND MID-HIGH DENSITY CONTROL

The invention provides a composition comprising a first ethylene-based polymer, formed by a high pressure, free-radical polymerization process, and a second ethylene-based polymer, formed by a high pressure, free-radical polymerization process, such composition comprising the following properties: a) a melt index (12) from 2.0 to 10 dg/min; b) a density from 0.922 to 0.935 g/cc; and wherein the second ethylene-based Hyper polymer is present in an amount from 60 to 95 weight percent, based on the sum of the weight of the first polymer and the second polymer; and wherein the second ethylene-based polymer has a density greater than, or equal to, 0.924 g/cc; and wherein the first ethylene-based polymer has a melt index less than 2.5 dg/min

MULTI-LAYER BLOWN FILM

The present disclosure provides a multi-layer blown film, comprising: a first skin layer and a second skin layer, where at least one of the first skin layer and the second skin layer comprises from 80 to 100 wt. % of a LLDPE, where the LLDPE has a density from 0.910 to 0.935 g/cm3; a core layer between the first skin layer and the second skin layer, where the core layer comprises from 70 to 100 wt. % of a second LLDPE having density from 0.910 to 0.935 g/cm3; and a first inner layer and a second inner layer, where at least one of the first inner layer and the second inner layer comprises from 80 to 100 wt. % of a HDPE, where the HDPE has a density from 0.940 to 0.970 g/cm3; where the multi-layer blown film has a density from 0.925 to 0.940 g/cm3and a total thickness of 15 to 150 μm.

MULTILAYER STRETCH FILMS AND METHODS THEREOF

Embodiments disclosed herein include multilayer films having a cling layer, a core layer, and a release layer, wherein the cling layer comprises a propylene interpolymer and the core layer comprises a core layer polyethylene composition. 1. A multilayer cast film comprising a cling layer , a core layer , and a release layer , wherein:{'sup': ['3', '3'], '#text': 'the cling layer comprises a propylene interpolymer comprising at least 60 wt. % units derived from propylene and between 1 and 40 wt. % units derived from ethylene, wherein the propylene interpolymer has a density of from 0.840 g/cmto 0.900 g/cm, a highest DSC melting peak temperature of from 50.0° C. to 120.0° C., a melt flow rate, MFR2, of from 1 to 100 g/10 min when measured according to ASTM D1238 at 230° C. and 2.16 kg load, and a molecular weight distribution (MWD) of less than 4.0; and'}the core layer comprises a core layer polyethylene composition which comprises the reaction product of ethylene and, optionally, one or more alpha olefin comonomers, wherein the core layer polyethylene composition is characterized by one or more of the following properties:(a) a melt index, I2, of from 2.5 to 12.0 g/10 min;(b) a density of from 0.910 to 0.925 g/cc;(c) a melt flow ratio, I10/I2, of from 6.0 to 7.6; and(d) a molecular weight distribution, (Mw/Mn) of from 2.25 to 4.0.2. The film of claim 1 , wherein the propylene interpolymer has a percent crystallinity in the range of from 0.5% to 45%.3. The film of claim 1 , wherein the propylene interpolymer has a weight average molecular weight (Mw) of at least 50 claim 1 ,000 grams per mole (g/mol).4. The film of claim 1 , wherein the cling layer further comprises a cling layer polyethylene composition which comprises the reaction product of ethylene and claim 1 , optionally claim 1 , one or more alpha olefin comonomers claim 1 , wherein the cling layer polyethylene composition is characterized by one or more of the following properties:(a) a melt index, I2, of from ...

Polymers Comprising Units Derived from Ethylene and Poly(Alkoxide)

A polymer comprises units derived from ethylene and poly(alkoxide) the polymer having at least 0.15 units of amyl groups per 1000 carbon atoms as determined by 13C Nuclear Magnetic Resonance (NMR). 1. A polymer comprising units derived from ethylene and poly(alkoxide) the polymer having at least 0.15 units of amyl groups per 1000 carbon atoms as determined by C Nuclear Magnetic Resonance (NMR).2. The polymer of comprising a portion of the ethylene bonded to one or more backbone carbon atoms of the poly(alkoxide).3. The polymer of wherein the polymer comprises at least one ethylene-based polymeric branch bonded to a backbone carbon atom of the poly(alkoxide).4. The polymer of in which the polymer comprises no appreciable methyl branches as determined by C NMR.5. The polymer of in which the polymer comprises no appreciable propyl branches as determined by C NMR.6. The polymer of having a density of at least 0.92 g/cm.7. The polymer of in which less than 60 weight percent of the poly(alkoxide) is extractable by solvent extraction.8. The polymer of having a peak melting temperature Tm in ° C. and density in g/cmthat satisfies the mathematical relationship:{'br': None, 'Tm<771.5(° C.·cc/g)×(density)−604(° C.).'}9. The polymer of having a heat of fusion (H) in Joules/grams (J/g) and density in g/cmthat satisfies the mathematical relationship:{'br': None, 'sub': 'f', 'sup': '2', 'H<2333(J·cc/g)×(density)−2009(J/g).'}10. A composition comprising the polymer of .11. An article comprising at least one component formed from the composition of .12. The article of in the form of a film.13. A process to form a polymer comprising units derived from ethylene and poly(alkoxide) claim 11 , the process comprising:A. Contacting at least one poly(alkoxide) with ethylene in the presence of a free-radical initiator in a first reactor or a first part of a multi-part reactor; andB. Reacting the poly(alkoxide) with additional ethylene in the presence of the free-radical initiator to form an ...

POLYETHYLENE COMPOSITION AND FILMS MADE THEREFROM

A polyethylene composition comprising the reaction product of ethylene and optionally one or more alpha-olefin comonomers in the presence of a catalyst composition comprising a multi-metallic procatalyst via solution polymerization; wherein said polyethylene composition is characterized by one or more of the following properties: a melt index, I, measured according to ASTM D 1238 (2.16 kg @190° C.), of from 0.9 to 5 g/10 min; density (measured according to ASTM D792) from 0.910 to 0.935 g/cc; a melt flow ratio, I/I, wherein Iis measured according to ASTM D1238 (10 kg @ 190° C.), of from 6 to 7.4; and molecular weight distribution (M/M) of from 2.5 to 3.5 is provided. 1. A polyethylene composition comprising the reaction product of ethylene and optionally one or more alpha-olefin comonomers in the presence of a catalyst composition comprising a multi-metallic procatalyst via solution polymerization; wherein said polyethylene composition is characterized by one or more of the following properties:{'sub': '2', '(a) a melt index, I, measured according to ASTM D 1238 (2.16 kg @190° C.), of from 0.9 to 5 g/10 min;'}{'sup': '3', '(b) density (measured according to ASTM D792) from 0.910 to 0.935 g/cm;'}{'sub': 10', '2, '(c) a melt flow ratio, I/I, wherein ho is measured according to ASTM D1238 (10 kg @ 190° C.) of from 6 to 7.4; and'}{'sub': w', 'n, '(d) molecular weight distribution (M/M) of from 2.5 to 3.5.'}2. The polyethylene composition according to claim 1 , wherein the solution polymerization occurs in a single reactor.3. The polyethylene composition according to claim 1 , wherein the solution polymerization occurs in a dual reactor system wherein the same polymer is made in each of the dual reactors.4. The polyethylene composition according to claim 1 , wherein when said polyethylene composition is formed into a single layer film having a 0.8 mil thickness according to the method described herein said film is characterized with one or more of the following ...

Polypropylene-based adhesive compositions

An adhesive composition comprising a copolymer of propylene and at least one comonomer selected from the group consisting of ethylene and C 4-20 α-olefins, the copolymer having (i) a content of units derived from propylene of greater than about 50 mole percent, (ii) a Brookfield viscosity at 190 C from about 50 to about 100,000 cP, (iii) an MWD from about 1.5 to about 15, and (iv) containing less than about 50 ppm residual catalyst metal.

Functionalized Ethylene/a-Olefin Interpolymer Compositions

The invention relates to functionalized interpolymers derived from base olefin interpolymers, which are prepared by polymerizing one or more monomers or mixtures of monomers, such as ethylene and one or more comonomers, to form an interpolymer products having unique physical properties. The functionalized olefin interpolymers contain two or more differing regions or segments (blocks), resulting in unique processing and physical properties.

Polymers comprising units derived from ethylene and poly(alkoxide)

A polymer comprises units derived from ethylene and poly(alkoxide) the polymer having at least 0.15 units of amyl groups per 1000 carbon atoms as determined by 13C Nuclear Magnetic Resonance (NMR).

Process for making ethylene-based polymers using hydrocarbon initiators

An ethylene-based polymer, e.g., LDPE, with a low dissipation factor is made by a process comprising the step of contacting at polymerization conditions ethylene and, optionally, one or more comonomers, e.g., an alpha-olefin, with at least one carbon-carbon (C—C) hydrocarbyl, free-radical initiator of Structure 1: wherein R1, R2, R3, R4, R5 and R6, are each, independently, hydrogen or a hydrocarbyl group and wherein, optionally, two or more R groups (R1, R2, R3, R4, R5 and R6) form a ring structure, with the provisos that at least one of R2 and R5, and at least one of R3 and R6 is a hydrocarbyl group of at least two carbon atoms, e.g., an alkaryl of at least seven carbon atoms.

Compositions containing low density ethylene-based polymers with high melt strength and films formed from the same

The invention provides a composition comprising the following: A) a first ethylene-based polymer, formed by a high pressure, free-radical polymerization process, and comprising the following properties: a) a Mw(abs) versus I2 relationship: Mw(abs) Подробнее

BIORIENTED POLYETHYLENE FILM

The present invention discloses a process for forming a biaxially oriented film. The process includes first selecting a polyolefin resin wherein said polyolefin resin comprises a linear low density polyethylene resin characterized by having from 9 to 35 weight percent of the total weight of linear low density polyethylene resin eluting from a CEF at a temperature greater than 97.0° C.; and further characterized by having a CDR of from 33 to 80 and a Mw Ratio of from 0.15 to 0.45. Next a film is formed from the polyolefin resin selected in the first step. Finally the film formed in the second step is oriented in a sequential manner. The films produced by this process are characterized by having an ultimate elongation at least 1.5 times greater in the MD as compared to the CD and the 2% secant modulus is a least 1.25 times greater in the CD as compared to the MD. The films are further characterized by having free residual shrinkage of less than 10% in the MD and less than 10% in the CD when exposed to a temperature of 90° C. for 10 minutes.

Silane-grafted olefin polymers, compositions and articles prepared therefrom, and methods for making the same

The invention relates compositions containing at least one silane-grafted polyolefin, and in particular, to compositions containing at least one silane-grafted ethylene/-olefin polymer, which has a melt viscosity less than 50,000 cP, and adhesives containing the same. In one embodiment, the at least one silane-grafted ethylene/-olefin polymer is formed from an ethylene/-olefin polymer that has a molecular weight distribution from 1 to 3.5. The invention also relates to the preparation of the silane-grafted polymers, by reacting, for example, an ethylene/-olefin polymer with at least one silane compound and at least one initiator.

Modified polyethylene compositions and method for making the same

Provided is a method for increasing the melt strength and/or low shear viscosity of a polyethylene resin. The method includes: a) providing a polyethylene composition including the reaction product of ethylene and optionally, one or more alpha-olefin comonomers, wherein the polyethylene composition is characterized by the following properties: a density ranging from 0.900 g/cm3 to 0.970 g/cm3, a molecular weight distribution (Mw/Mn) ranging from 2.6 to 3.5, and from 0.10 to 0.27 vinyl groups per 1,000 total carbon atoms; b) providing a masterbatch composition including a free radical generator and a polyethylene resin, wherein the free radical generator has a half-life at 220° C. of less than 200 seconds, and a decomposition energy higher than −250 kJ/mol, and wherein the polyethylene resin has a density ranging from 0.900 g/cm3 to 0.970 g/cm3, melt index ranging from 0.01 g/10 min to 100 g/10 min; and c) reacting the polyethylene composition with the masterbatch composition to form a modified ...

ANTIOXIDANT COMPOUNDS FOR POLYOLEFIN RESINS

The present invention is a composition suitable for use as an antioxidant for polyolefin resins, said composition having a structure corresponding to the formula: wherein R, R, R, R, Rand Rare selected from a hydrogen or an alkyl group having 1 to 24 carbon atoms, or a branched alkyl group having 1 to 24 carbon atoms, or a cyclic alkyl group with 1 to 24 carbon atoms; wherein said composition has a peak decomposition temperature of less than 280° C. and a total decomposition energy which is endothermic or if exothermic, releases no more energy; than 40 kJoules/mole. 2. A composition of wherein the compound is 3 claim 1 ,4-diethyl-3 claim 1 ,4-diphenyl hexane.3. A composition of wherein the composition is 3 claim 1 ,4-dipropyl-3 claim 1 ,4-diphenyl hexane.4. A composition of wherein the composition is 3 claim 1 ,4-di-isopropyl-3 claim 1 ,4-diphenyl hexane.5. A composition of wherein the composition is 3 claim 1 ,4-methyl-3 claim 1 ,4-diphenyl hexane.6. A composition of wherein the composition is 3 claim 1 ,4-dibutyl-3 claim 1 ,4-diphenyl hexane.7. A composition of wherein the composition is 3 claim 1 ,4-di-tert-butyl-3 claim 1 ,4-diphenyl hexane.8. The composition of wherein the composition has a peak decomposition temperature of less than 250° C.9. The composition of wherein the decomposition energy is endothermic.10. A composition comprising of{'sup': '3', 'a. a polyethylene resin having at least 50% by weight of units derived from ethylene, and having a density from 0.875 to 0.975 g/cmand a melt index of 0.01 g/10 min to 150 g/10 min; and'}b. a compound capable of generating free radicals at a peak decomposition temperature of 280° C. or less and a total decomposition energy which is endothermic or if exothermic, releases no more energy than 40 kJoules/mole.11. The composition of wherein the compounds of component b are combined with other antioxidants such that the compounds of component b comprise at least 1% of the total antioxidant present.13. The composition ...

Ethylene/alpha-olefin interpolymer suitable for use in shrinkage film applications, and articles made therefrom

The instant invention provides an ethylene/alpha-olefin interpolymer suitable for use in shrinkage film applications, and articles made therefrom. The ethylene/alpha-olefin interpolymer according to the present invention has a CDBI of less than 60%, and comprises at least two fractions in crossfractionation of the ethylene/alpha-olefin interpolymer, eluting from 85° C. to 90° C. and from 90° C. to 95° C., comprising a weight fraction ratio of >0.68 and a molecular weight homogeneity index of greater than 0.65; wherein the weight fraction ratio is the ratio of the weight of polymer in each fraction divided by the weight of polymer eluting between 95° C. and 100° C. and the molecular weight homogeneity index is the ratio of the weight average molecular weight of the polymer in the fraction divided by the weight average molecular weight of the polymer eluting between 95° C. and 100° C., and wherein the ethylene/alpha-olefin interpolymer has a density in the range of 0.920 to 0.940 g/cm3.

Process to make long chain branched (LCB), block, or interconnected copolymers of ethylene

A process is taught, comprising polymerizing ethylene in the presence of a catalyst to form a crystalline ethylene-based polymer having a crystallinity of at least 50% as determined by DSC Crystallinity in a first reactor or a first part of a multi-part reactor and reacting the crystalline ethylene-based polymer with additional ethylene in the presence of a free-radical initiator to form an ethylenic polymer in at least one other reactor or a later part of a multi-part reactor.

ZIEGLER-NATTA CATALYZED POLYETHYLENE RESINS AND FILMS INCORPORATING SAME

Embodiments of the present disclosure are specifically related to LLDPE compositions produced from heterogeneous procatalyst compositions and blown and cast films incorporating these LLDPE compositions.

Silane-Grafted Olefin Polymers, Compositions and Articles Prepared Therefrom, and Methods For Making the Same

The invention relates compositions containing at least one silane-grafted polyolefin, and in particular, to compositions containing at least one silane-grafted ethylene/α-olefin polymer, which has a melt viscosity less than 50,000 cP, and adhesives containing the same. In one embodiment, the at least one silane-grafted ethylene/α-olefin polymer is formed from an ethylene/α-olefin polymer that has a molecular weight distribution from 1 to 3.5. The invention also relates to the preparation of the silane-grafted polymers, by reacting, for example, an ethylene/α-olefin polymer with at least one silane compound and at least one initiator.

Films having desirable mechanical properties and articles made therefrom

Disclosed herein is a film comprising a layer that comprises a polyethylene composition comprising the reaction product of ethylene and optionally one or more alpha-olefin comonomers, wherein said polyethylene composition is characterized by the following properties: a melt index, I2, measured according to ASTM D1238 (2.16 kg, 190 C), of from 0.5 to 10 g/10 min; a density (measured according to ASTM D792) of less than 0.935 g/cm3; a melt flow ratio, I10/I2, wherein I10is measured according to ASTM D1238 (10 kg, 190 C) of from 6.0 to 7.5; a molecular weight distribution (Mw/Mn) of from 2.8 to 3.9; and a vinyl unsaturation of greater than 0.12 vinyls per one thousand carbon atoms, and a low density polyethylene.

Liquid and gel-like low molecular weight ethylene polymers

The subject invention pertains to homogeneous liquid low molecular weight ethylene/alpha-olefin polymers having a number average molecular weight (Mn) as determined by gel permeation chromatography, of less than 25,000, a total crystallinity, as measured by DSC, of less than 10%, and a pour point, as measured by ASTM D97, of less than 50° C. The subject invention also pertains to homogeneous gel-like low molecular weight ethylene/alpha-olefin polymers having a number average molecular weight (Mn) as determined by gel permeation chromatography, of less than 25,000, a total crystallinity, as measured by DSC, of less than 50%, and a pour point, as measured by ASTM D97, of less than 90° C.

ETHYLENE-BASED POLYMER COMPOSITIONS FOR IMPROVED EXTRUSION COATINGS

The invention provides a composition comprising at least the following: a) a first composition comprising at least one first ethylene-based polymer, formed by high pressure, free-radical polymerization, and wherein the first composition comprises the following properties: a melt index (I2) from 1.0 to 15.0 g/10 min, and density from 0.910 to 0.940 g/cc; b) a second composition comprising at least one second ethylene-based polymer, and wherein the second composition comprises the following properties; a melt index (I2) from 1.0 to 1000 g/10 min, a density greater than 0.940 g/cc; wherein the composition comprises the following properties: melt index (I2) from 2.0 to 20.0 g/10 min, and a density from 0.915 to 0.940 g/cc; and wherein the first composition is present in an amount from 65 to 95 wt %, based on the weight of the composition. 1. A composition comprising at least the following:a) a first composition comprising at least one first ethylene-based polymer, formed by high pressure, free-radical polymerization, and wherein the first composition comprises the following properties: a melt index (I2) from 1.0 to 15.0 g/10 min, and density from 0.910 to 0.940 g/cc;b) a second composition comprising at least one second ethylene-based polymer, and wherein the second composition comprises the following properties; a melt index (2) from 1.0 to 1000 g/10 min, a density greater than 0.940 g/cc;wherein the composition comprises the following properties: melt index (2) from 2.0 to 20.0 g/10 min, and a density from 0.915 to 0.940 g/cc; andwherein the first composition is present in an amount from 65 to 95 wt %, based on the weight of the composition.2. The composition of claim 1 , wherein the melt index (2) ratio of “the second composition” to “the first composition” is from 0.50 to 2.70.3. The composition of claim 1 , wherein the melt index (2) ratio of “the composition” to “the second composition” is from 0.30 to 2.00.4. The composition of claim 1 , wherein the first ...

Ethylene/alpha-olefin interpolymer composition

The instant invention provides an ethylene/alpha-olefin interpolymer composition suitable for blown film applications, and blown films made therefrom. The ethylene/alpha-olefin interpolymer composition suitable for blown film applications according to the present invention comprises greater than 80 percent by weight of units derived from ethylene and 20 percent or less by weight of units derived from one or more alpha olefin co-monomers, wherein said ethylene/alpha-olefin interpolymer has a density in the range of from 0.910 to 0.918 g/cm3, a melt index I2 in the range of from 0.5 to 1.1 g/10 minutes, a melt flow ratio I10/I2 in the range of from 8 to 10, a melt strength in the range of from 3 to 6 cN, a highest temperature fraction in the range of from 11 to 14 percent determined by CEF, a highest peak temperature fraction by CEF in range of from 96 to 100° C., and a lowest temperature fraction from CEF in the range of from 2 to 5 percent, and a DSC heat curve having three melting peaks ...

ETHYLENE-BASED POLYMERS AND PROCESSES TO MAKE THE SAME

An ethylene-based polymer, which is a low density polyethylene (LDPE), obtained by free radical polymerization of ethylene, and wherein the LDPE has a GPC parameter “LSP” less than 1.60. 115-. (canceled)16. A composition comprising an ethylene-based polymer that comprises the following features:a) at least 0.1 amyl groups per 1000 total carbon atoms;b) a melt index of 0.01 to 0.3;c) a z-average molecular weight of Mz (conv) of greater than 350,000 g/mol and less than 425,000 g/mol;d) a gpcBR value from 1.50 to 2.05, ande) a MWD(conv) [Mw(conv)/Mn(conv)] from 6 to 917. The composition of claim 16 , wherein the ethylene-based polymer has a GPC-Light Scattering parameter “LSP” less than 2.0.18. The composition of- claim 16 , wherein the polymer has a melt strength greater than 15 cN and less than 25 cN.19. The composition of claim 16 , wherein the polymer has a MWD(conv) from 5 to 8.20. The composition of claim 16 , wherein the polymer has a melt index (I2) from 0.01 to 1 g/10 min.21. The composition of claim 16 , wherein the polymer has a density from 0.910 to 0.940 g/cc.22. The composition of claim 16 , wherein the polymer has a melt strength of at least 15 cN and less than 21 cN claim 16 , and a velocity at break of greater than 40 mm/s23. The composition of claim 16 , wherein the polymer has a viscosity ratio (V0.1/V100 claim 16 , at 190° C.) greater than 50.24. The composition of claim 16 , wherein the polymer has a MWD(conv) greater than 6.25. The composition of claim 16 , wherein the polymer is a low density polyethylene (LDPE) claim 16 , obtained by the high pressure claim 16 , free radical polymerization of ethylene.26. An article comprising at least one component formed from the composition of .27. The article of claim 26 , wherein the article is a film. This application claims the benefit of U.S. Provisional Application No. 61/707,342, filed on Sep. 28, 2012.Blown film production lines are typically limited in output by bubble stability. Blending Linear Low ...

RHEOLOGY MODIFIED OLEFIN-BASED POLYMER COMPOSITIONS

A process to form a rheology modified composition, the process comprising applying radiation, and optionally heat, to a composition that comprises at least the following component: a) an olefin-based polymer comprising a total unsaturation ≥0.20 /1000 C; and wherein the radiation is applied using an electron beam (e-beam) at a dosage selected from 0.1 MRad to 1.5 MRad; and wherein component a is selected from a telechelic polyolefin of the formula A1L1L2A2, an unsaturated polyolefin of the formula A1L1, or an ethylene/alpha-olefin interpolymer. A process to form a rheology modified composition, the process comprising applying heat, and optionally radiation, to a composition that comprises at least the following components: a) an olefin-based polymer, as described above, comprising a total unsaturation ≥0.20/1000 C; b) from 1.0 to 100 ppm of a peroxide, based on the weight of the composition.

MULTILAYER STRETCH FILMS AND METHODS THEREOF

Embodiments disclosed herein include multilayer cast films having a first outer layer, a core layer, and a second outer layer, wherein the first outer layer comprises (a) a linear low density polyethylene (LLDPE), ultra-low density polyethylene (ULDPE), a first polyethylene composition, or combinations of two or more thereof, and (b) polyisobutylene, and the core layer comprises a core layer polyethylene composition. 1. A multilayer cast film comprising a first outer layer , a core layer , and a second outer layer , wherein:the first outer layer comprises (a) a linear low density polyethylene (LLDPE), ultra-low density polyethylene (ULDPE), a first polyethylene composition, or combinations of two or more thereof, and (b) polyisobutylene; andthe core layer comprises a core layer polyethylene composition which comprises the reaction product of ethylene and, optionally, one or more alpha olefin comonomers, wherein the core layer polyethylene composition is characterized by the following properties:(a) a melt index, I2, of from 2.5 to 12.0 g/10 min;(b) a density of from 0.910 to 0.925 g/cc;(c) a melt flow ratio, I10/I2, of from 6.0 to 7.6; and(d) a molecular weight distribution, (Mw/Mn) of from 2.2 to 3.6.2. The film of claim 1 , wherein the first outer layer comprises from 0.5 to 10 weight percent claim 1 , based on the total weight of polymers present in the first outer layer claim 1 , of polyisobutylene.3. The film of claim 1 , wherein the first outer layer further comprises a first polyethylene composition which comprises the reaction product of ethylene and claim 1 , optionally claim 1 , one or more alpha olefin comonomers claim 1 , wherein the first polyethylene composition is characterized by the following properties:(a) a melt index, I2, of from 2.5 to 12.0 g/10 min;(b) a density of from 0.910 to 0.925 g/cc;(c) a melt flow ratio, I10/I2, of from 6.0 to 7.6; and(d) a molecular weight distribution, (Mw/Mn) of from 2.2 to 3.6.4. The film of claim 1 , wherein the ...

Process for Making Ethylene-Based Polymers Using Hydrocarbon Initiators

An ethylene-based polymer, e.g., LDPE, with a low dissipation factor is made by a process comprising the step of contacting at polymerization conditions ethylene and, optionally, one or more comonomers, e.g., an alpha-olefin, with at least one carbon-carbon (C—C) hydrocarbyl, free-radical initiator of Structure 1: wherein R, R, R, R, Rand R, are each, independently, hydrogen or a hydrocarbyl group and wherein, optionally, two or more R groups (R, R, R, R, Rand R) form a ring structure, with the provisos that at least one of Rand R, and at least one of Rand Ris a hydrocarbyl group of at least two carbon atoms, e.g., an alkaryl of at least seven carbon atoms. 2. The process of in which the C—C hydrocarbyl claim 1 , free-radical initiator of Structure I is present in an amount greater than claim 1 , or equal to claim 1 , 0.001 grams per kilogram (g/kg) of the ethylene fed to the polymerization reaction.5. The process of in which the C—C hydrocarbyl claim 1 , free-radical initiator has a decomposition temperature of greater than or equal to (≧) 125° C. based on a DSC measurement.6. The process of in which two or more C—C hydrocarbyl claim 1 , free-radical initiators of Structure I are contacted with ethylene and claim 1 , optionally claim 1 , one or more alpha-olefin comonomers.7. An ethylene-based polymer made by the process of .8. An ethylene-based polymer having at least one of the following properties: (1) a carbonyl ratio of less than (<) 0.02 and (2) a dissipation factor less than or equal to (≦) 1.55×10radian at 2.47 GHz.9. The ethylene-based polymer of in which the polymer is a low density polyethylene (LDPE).11. The process of in which a comonomer is present and the comonomer is at least one of an alpha-olefin claim 10 , an acrylate or a methacrylate.13. The process of in which the ethylene and claim 11 , optionally claim 11 , one or more comonomers claim 11 , are contacted with at least one carbon-carbon (C—C) hydrocarbyl claim 11 , free-radical initiator in ...

Multilayer stretch films and methods thereof

Embodiments disclosed herein include multilayer cast films having a first outer layer, a core layer, and a second outer layer, wherein the first outer layer comprises (a) a linear low density polyethylene (LLDPE), ultra-low density polyethylene (ULDPE), a first polyethylene composition, or combinations of two or more thereof, and (b) polyisobutylene, and the core layer comprises a core layer polyethylene composition.

LONG CHAIN BRANCHED (LCB), BLOCK OR INTERCONNECTED COPOLYMERS OF ETHYLENE IN COMBINATION WITH ONE OTHER POLYMER

An ethylenic polymer comprising amyl groups from about 0.1 to about 2.0 units per 1000 carbon atoms as determined by Nuclear Magnetic Resonance and both a peak melting temperature, Tm, in ° C., and a heat of fusion, Hf, in J/g, as determined by DSC Crystallinity, where the numerical values of Tm and Hf correspond to the relationship Tm(0.2143*Hf)+79.643. An ethylenic polymer comprising at least one preparative TREF fraction that elutes at 95° C. or greater using a Preparative Temperature Rising Elution Fractionation method, where at least one preparative TREF fraction that elutes at 95° C. or greater has a gpcBR value greater than 0.05 and less than 5 as determined by gpcBR Branching Index by 3D-GPC, and where at least 5% of the ethylenic polymer elutes at a temperature of 95° C. or greater based upon the total weight of the ethylenic polymer.

Compositions Comprising Ethylene-Carbon Monoxide Copolymers

The invention provides a composition comprising an ethylene-based polymer and wherein the ethylene-based polymer has the following properties: (A) a CO content from greater than 0 to less than 10 weight percent CO (carbon monoxide), based on the weight of the polymer, and (B) a melt index (I2) from 0.1 to less than 3 g/10 min; and (C) a density from 0.923 to 0.928 g/cc; and wherein the ethylene-based polymer has a melting point, Tm, in ° C., that meets the following relationship: Tm (° C.)<601.4*(Density N in g/cc)−447.8° C. 2. The composition of claim 1 , wherein the ethylene-based polymer has a MWD(conv) from 5.0 to 7.0.3. The composition of claim 1 , wherein the ethylene-based polymer is formed from a high pressure claim 1 , free-radical polymerization.4. The composition of claim 1 , wherein the ethylene-based polymer has a melting point claim 1 , Tm claim 1 , in ° C. claim 1 , that meets the following relationship:Tm (° C.)<601.4*(Density in g/cc)−448.5 (° C.).5. The composition of claim 1 , wherein the ethylene-based polymer has a melt strength (190° C.) less than claim 1 , or equal to claim 1 , 17.0 cN.6. The composition of claim 1 , wherein the ethylene-based polymer has a CO content from greater than 0 to less than claim 1 , or equal to claim 1 , 3 weight percent claim 1 , based on the weight of the polymer.7. The composition of claim 1 , wherein the ethylene-based polymer has an amyl group level greater than claim 1 , or equal to claim 1 , 0.5 amyl group per 1000 carbon atoms claim 1 , as determined by 13C NMR.8. The composition of claim 1 , wherein the ethylene-based polymer has a melt strength of at least 10.0 cN.9. An article comprising at least one component formed from the composition of .10. The article of in the form of a film or sheet. The present application claims the benefit of U.S. Provisional Application 62/329,340, filed Apr. 29, 2016.Compositions comprising ethylene-based polymers that contain carbon monoxide (CO), e.g., ethylene/carbon ...

Functionalized ethylene/-olefin interpolymer compositions

The invention relates to functionalized interpolymers derived from base olefin interpolymers, which are prepared by polymerizing one or more monomers or mixtures of monomers, such as ethylene and one or more comonomers, to form an interpolymer products having unique physical properties. The functionalized olefin interpolymers contain two or more differing regions or segments (blocks), resulting in unique processing and physical properties.

Polyolefin composition with molecular weight maximum occurring in that part of the composition that has the highest comonomer content

The invention relates to a polyolefin copolymer composition produced with a catalyst having a metallocene, complex in a single reactor for the polymer of an alpha-olefin monomer with one or more olefin comonomers, and a molecule weight maximum which occurs in that 50 percent by weight of the composition which has the highest weight percent comonomer content. Preferably, the composition has a comonomer partitioning fact Cpf which is equal to or greater than 1.10 or molecule weight partitioning fact Mpf which is equal to or greater than 1.15. Preferred composition also have at least 0.01 long chain branches per 1000 carbon atoms along the polymer backbone. These compositions with reverse molecular engineering have. superior properties and are easily processable due to the simultaneous presence of the association of high molecular weight with high comonomer content and of long chain branching.

Ethylene-based polymer compositions for improved extrusion coatings

The invention provides a composition comprising at least the following: a) a first composition comprising at least one first ethylene-based polymer, formed by high pressure, free-radical polymerization, and wherein the first composition comprises the following properties: a melt index (I2) from 1.0 to 15.0 g/10 min, and density from 0.910 to 0.940 g/cc; b) a second composition comprising at least one second ethylene-based polymer, and wherein the second composition comprises the following properties; a melt index (I2) from 1.0 to 1000 g/10 min, a density greater than 0.940 g/cc; wherein the composition comprises the following properties: melt index (I2) from 2.0 to 20.0 g/10 min, and a density from 0.915 to 0.940 g/cc; and wherein the first composition is present in an amount from 65 to 95 wt %, based on the weight of the composition.

Process for increasing the melt strength of a polyethylene resin, a masterbatch composition and a polymeric composition

A process for increasing the melt strength of a polyethylene resin comprising a) selecting a polyethylene resin having i) a density, as determined according to ASTM D792, in the range of from 0.865 g/cm3 to 0.97 g/cm3, and ii) a melt index, I2, as determined according to ASTM D1238 (2.16 kg, 190° C.), in the range of from 0.01 g/10 min to 100 g/10 min; b) reacting from 10 ppm to 1000 ppm of at least one peroxide having a 1 hour half-life decomposition temperature from 160° C. to 250° C. with the polyethylene resin under conditions sufficient to increase the melt strength of the polyethylene resin is provided. Also provided are a masterbatch composition and a polymeric composition.

ETHYLENE/ALPHA-OLEFIN INTERPOLYMER SUITABLE FOR USE IN FIBER APPLICATIONS, AND FIBERS MADE THEREFROM

The instant invention provides an ethylene/alpha-olefin interpolymer suitable for use in fiber applications, and fibers made therefrom. The ethylene/alpha-olefin interpolymer according to the present invention has a CDBI of less than 60%, and comprises at least two fractions in crossfractionation of the ethylene/alpha-olefin interpolymer, eluting from 85° C. to 90° C. and from 90° C. to 95° C., comprising a weight fraction ratio of >0.68 and a molecular weight homogeneity index of greater than 0.65; wherein the weight fraction ratio is the ratio of the weight of polymer in each fraction divided by the weight of polymer eluting between 95° C. and 100° C. and the molecular weight homogeneity index is the ratio of the weight average molecular weight of the polymer in the fraction divided by the weight average molecular weight of the polymer eluting between 95° C. and 100° C., and wherein the ethylene/alpha-olefin interpolymer has a density in the range of from 0.920 to 0.965 g/cm, and a melt index (I) in the range of from 0.5 to 100 g/10 minutes, and melt flow ratio (I/I) in the range of from 5.8 to 8. 1. An ethylene/alpha-olefin interpolymer , wherein the ethylene/alpha-olefin interpolymer has a CDBI of less than 60% , and wherein said ethylene/alpha-olefin interpolymer comprises at least two fractions in crossfractionation of the ethylene/alpha-olefin interpolymer , eluting from 85° C. to 90° C. and from 90° C. to 95° C. , comprising a weight fraction ratio of >0.68 and a molecular weight homogeneity index of greater than 0.65; wherein the weight fraction ratio is the ratio of the weight of polymer in each fraction divided by the weight of polymer eluting between 95° C. and 100° C. and the molecular weight homogeneity index is the ratio of the weight average molecular weight of the polymer in the fraction divided by the weight average molecular weight of the polymer eluting between 95° C. and 100° C. , and wherein said ethylene/alpha-olefin interpolymer has a density ...

Ethylene-based polymers with good processability for use in multilayer films

A composition comprising an ethylene-based polymer which comprises the following properties: a) MWD(conv) from 3.0 to 7.0; b) an ADF IR between 0.230 and 0.260 for molecular weight ≤15,000 g/mol c) 12 from 4.0 to 6.5 g/10 min.

Ethylene-based polymers and processes to make the same

The invention provides a composition comprising an ethylene-based polymer, formed from a high pressure, free-radical polymerization, and wherein the ethylene-based polymer has the following properties: a) a CO content from “greater than 0” to less than 10 weight percent CO (carbon monoxide), based on the weight of the polymer; and b) a melt index (I2) from 3 to 30 g/10 min.

Functionalized olefin interpolymers, compositions and articles prepared therefrom and methods for making the same

The invention provides compositions containing at least one functionalized polyolefin, and in particular, to compositions containing at least one functionalized ethylene interpolymer, which has a melt viscosity less than 50,000 cP at 350° F. (177° C.) and a molecular weight distribution (Mw/Mn) from about 1 to 5. The invention also provides adhesive formulations containing the same. The invention also relates to the preparation of the functionalized interpolymers, by reacting, for example, such an ethylene interpolymer with the following: a) at least one unsaturated compound, containing at least one heteroatom, and b) at least one initiator.

Process for making high pressure free radical ethylene copolymers

A high pressure polymerization process to form an ethylene-based polymer, the process comprising at least the following step: polymerizing a reaction mixture comprising ethylene and at least one comonomer, using a reactor system comprising a reactor configuration, and the following: (A) at least two reaction zones, a zone (reaction zone 1) and an ith zone (reaction zone i where i≥2), (B) at least two ethylene-based feed streams, each comprising a percentage of the total make-up ethylene fed to the polymerization process, and wherein a first stream is sent to reaction zone 1 and a second stream is sent to reaction zone i; (C) a control system to control the percentage of the total make-up ethylene in the stream sent to reaction zone 1, and the percentage of the total make-up ethylene in the stream sent to reaction zone i, and wherein the ratio (Q) of the molar concentration of the at least one comonomer fed to the first reaction zone, to the molar concentration of comonomer in the sum of ...

Ethylene-based polymers and processes to make the same

The invention provides a composition comprising a low density polyethylene (LDPE) obtained by free radical polymerization of ethylene, and wherein the LDPE has a GPC-Viscometer parameter DPP less than 1.3. The invention also provides a composition comprising an ethylene-based polymer that comprises the following features: a) at least 0.1 amyl groups per 1000 total carbon atoms; b) a melt index from 0.5 to 0.9 c) a MWD(conv) [(Mw(conv)/Mn(conv))] from 9 to 13. The invention also provides a composition comprising an ethylene-based polymer that comprises the following features: a) at least 0.1 amyl groups per 1000 total carbon atoms; b) a MWD(conv) from 9 to 13; c) a gpcBR value from 2.0 to 5.0; and d) a melt strength (MS) greater than 20 cN.

PROCESS TO MAKE LONG CHAIN BRANCHED (LCB), BLOCK, OR INTERCONNECTED COPOLYMERS OF ETHYLENE

A process is taught, comprising polymerizing ethylene in the presence of a catalyst to form a crystalline ethylene-based polymer having a crystallinity of at least 50% as determined by DSC Crystallinity in a first reactor or a first part of a multi-part reactor and reacting the crystalline ethylene-based polymer with additional ethylene in the presence of a free-radical initiator to form an ethylenic polymer in at least one other reactor or a later part of a multi-part reactor.

Low density ethylene-based polymers with high melt strength

The invention provides a composition comprising a first ethylene-based polymer, formed by a high pressure, free-radical polymerization process, and comprising the following properties: a) a Mw(abs) versus I2 relationship: Mw(abs) Подробнее

LONG CHAIN BRANCHED (LCB), BLOCK OR INTERCONNECTED COPOLYMERS OF ETHYLENE IN COMBINATION WITH ONE OTHER POLYMER

An ethylenic polymer comprising amyl groups from about 0.1 to about 2.0 units per 1000 carbon atoms as determined by Nuclear Magnetic Resonance and both a peak melting temperature, T, in ° C., and a heat of fusion, H, in J/g, as determined by DSC Crystallinity, where the numerical values of Tand Hcorrespond to the relationship T≧(0.2143*H)+79.643. An ethylenic polymer comprising at least one preparative TREF fraction that elutes at 95° C. or greater using a Preparative Temperature Rising Elution Fractionation method, where at least one preparative TREF fraction that elutes at 95° C. or greater has a gpcBR value greater than 0.05 and less than 5 as determined by gpcBR Branching Index by 3D-GPC, and where at least 5% of the ethylenic polymer elutes at a temperature of 95° C. or greater based upon the total weight of the ethylenic polymer. 120-. (canceled)21. A process , comprising:A) polymerizing ethylene in the presence of a catalyst to form a linear ethylene-based polymer having a crystallinity of at least 50% as determined by DSC Crystallinity in a first reactor or a first part of a multi-part reactor; andB) reacting the linear ethylene-based polymer with additional ethylene in the presence of a free-radical initiator to form an ethylenic polymer in at least one other reactor or a later part of a multi-part reactor.22. The process of claim 21 , where the reaction of step (B) occurs by graft polymerization.23. The process of claim 21 , where the catalyst of step (A) is a metallocene catalyst.24. The process of claim 23 , where polar compounds claim 23 , if present in the first reactor or the first part of a multi-part reactor claim 23 , do not inhibit the activity of the metallocene catalyst. This application claims the priority benefit under 35 USC §119(e) to U.S. Provisional Patent Application No. 61/036,329, filed Mar. 13, 2008, the disclosure of which is incorporated herein by reference.There are many types of polyethylene made and sold today. Two types in ...

Ethylene-based polymer compositions for use as a blend component in shrinkage film applications

An ethylene-based polymer composition has been discovered and is characterized by a Comonomer Distribution Constant greater than about 45. The new ethylene-based polymer compositions and blends thereof with one or more polymers, such as LDPE, are useful for making many articles, especially including films.

Tubular Low Density Ethylene-Based Polymers with Improved Balance of Extractables and Melt Elasticity

The invention provides an ethylene-based polymer comprising the following properties: a) weight fraction (w) of molecular weight above 5*10g/mol, w>A−B*I2, where A=0.4 wt %, and B is 0.02 wt %/(dg/min), and wD−E*log(I2), where D=162 Pa and E=52 Pa/log(dg/min). 1. An ethylene-based polymer comprising the following properties:{'sup': '6', 'sub': '2', 'a) weight fraction (w) of molecular weight above 5*10g/mol, w>A−B*I2, where A=0.4 wt %, and B is 0.02 wt %/(dg/min), and wD−E*log(I2), where D=162 Pa and E=52 Pa/log(dg/min).2. The ethylene-based polymer of claim 1 , wherein the polymer has a melt index (I) from 0.3 to 16 dg/min.3. The polymer of or claim 1 , in which the n-hexane extractables are Подробнее

Ethylene-based polymers and processes to make the same

A composition comprising an ethylene-based polymer, which comprises the following properties: a) (Mw(abs)/Mw(conv)−2.00)*(100,000 g/mol/Mw(abs))*CDF?IR #191 (MW≤10,000 g/mol)≥0.030; and b) a melt index (I2) from 0.30 to 2.50 g/10 min.

ETHYLENE-BASED POLYMERS AND PROCESSES TO MAKE THE SAME

The invention provides a composition comprising a low density polyethylene (LDPE) obtained by free radical polymerization of ethylene, and wherein the LDPE has a GPC-Viscometer parameter “DPP” less than 1.3. 1. A composition comprising an ethylene-based polymer , which is a low density polyethylene (LDPE) obtained by free radical polymerization of ethylene , and wherein the LDPE has a GPC-Viscometer parameter “DPP” less than 1.3.2. The composition of claim 1 , wherein the polymer has a MWD(conv) from 8 to 13.3. The composition of claim 1 , wherein the polymer has a melt strength greater than 20 cN.4. The composition of claim 1 , wherein the polymer has a gpcBR value from 2.0 to 5.0.5. A composition comprising an ethylene-based polymer that comprises the following features:a) at least 0.1 amyl groups per 1000 total carbon atoms;b) a melt index (I2) from 0.5 to 0.9 g/10 min;c) a MWD(conv) [(Mw(conv)/Mn(conv))] from 9 to 13.6. A composition comprising an ethylene-based polymer that comprises the following features:a) at least 0.1 amyl groups per 1000 total carbon atoms;b) a MWD(conv) from 9 to 13;c) a gpcBR value from 2.0 to 5.0;d) a melt strength (MS) greater than 20 cN.7. The composition of claim 5 , wherein the ethylene-based polymer has a GPC-Viscometer parameter “DPP” less than 2.0.8. The composition of claim 1 , wherein the polymer has a melt index (I2) from 0.01 to 1 g/10 min.9. The composition of claim 1 , wherein the polymer has a density from 0.910 to 0.940 g/cc.10. The composition of claim 1 , wherein the polymer has a melt strength of at least 22 cN and less than 27 cN.11. The composition of claim 1 , wherein the polymer has a viscosity ratio (V0.1/V100 claim 1 , at 190° C.) from 25 to 35.12. The composition of claim 1 , wherein the polymer has a MWD(conv) greater than 9.5.13. The composition of claim 1 , wherein the ethylene-based polymer is a low density polyethylene (LDPE) formed by a high pressure claim 1 , free radical polymerization of ethylene.14. An ...

Polyethylene with high melt strength for use in films

The present invention is a method for producing a film particularly well suited for shrink film applications, said method comprising the steps of selecting a target polyethylene resin and then increasing the melt strength of the polyethylene resin by reacting the polyethylene resin with an alkoxy amine derivative, and then forming a film from the reacted target polyethylene.

FUNCTIONALIZED ETHYLENE/ALPHA-OLEFIN INTERPOLYMER COMPOSITIONS

The invention relates to functionalized interpolymers derived from base olefin interpolymers, which are prepared by polymerizing one or more monomers or mixtures of monomers, such as ethylene and one or more comonomers, to form an interpolymer products having unique physical properties. The functionalized olefin interpolymers contain two or more differing regions or segments (blocks), resulting in unique processing and physical properties. 1. A composition comprising:a multi-block interpolymer that comprises, in polymerized form, at least 50 mole percent ethylene, and one or more copolymerizable comonomers, the multi-block interpolymer havinga comonomer content of a TREF fraction which elutes between 40° C. and 130° C. greater than or equal to the quantity (−0.2013)T+20.07 where T is the numerical value of the peak elution temperature of the TREF fraction being compared, measure in ° C.; andwherein the multi-block interpolymer is functionalized with at least one compound selected from the group consisting of radically graftable unsaturated compounds containing at least one heteroatom.2. The composition of wherein the comonomer content of a TREF fraction which elutes between 40° C. and 130° C. greater than or equal to the quantity (−0.2013)T+21.07 where T is the numerical value of the peak is elution temperature of the TREF fraction being compared claim 1 , measure in ° C.3. The composition of wherein the comonomer content of the TREF fraction elutes between 60° C. and 95° C.4. The composition of wherein the multi-block interpolymer has a density from 0.855 g/cc to 0.935 g/cc.5. The composition of wherein the multi-block interpolymer has a melt temperature claim 1 , Tm claim 1 , from 113° C. to 125° C.6. The composition of wherein the multi-block interpolymer has an Mw/Mn from 1.7 to 3.5.7. The composition of wherein the multi-block interpolymer has an I/Ifrom 6.0 to 9.1.8. The composition of wherein the multi-block interpolymer comprises hard blocks and soft blocks ...

Process for producing ethylene-based polymers with low hexane extractables

Ethylene-based polymers comprising the following properties: (A) a density from 0.9190 g/cc to 0.9240 g/cc; (B) a hexane extractable level that is less than or equal to the lower of: (1) (A+(B*density (g/cc))+(C*log(MI) dg/min)) based on total weight of the ethylene-based polymer; where A=250.5 wt %, B=−270 wt %/(g/cc), C=0.25 wt %/[log(dg/min)], or (2) 2.0 wt %; (C) a G′ (at G″=500 Pa, 170° C.) that meets the following equation: G′≥D+E[log (12)], where D=150 Pa and E=−60 Pa/[log(dg/min)]; and (D) a melt index (12) from 1.0 to 20 dg/min; are made in process comprising the step of contacting in a reaction configuration, comprising a first tubular reaction zone 1 and a last tubular reaction zone i, in which i is greater than or equal to (≥) 3, under high pressure polymerization conditions, and in which the first reaction zone 1 has a peak polymerization temperature greater than the peak temperature of the ith reaction zone, and wherein the difference in these two peak temperatures is ≥30° ...

Low density ethylene-based polymer compositions with high melt strength and mid-high density control

The invention provides a composition comprising a first ethylene-based polymer, formed by a high pressure, free-radical polymerization process, and a second ethylene-based polymer, formed by a high pressure, free-radical polymerization process, such composition comprising the following properties: a) a melt index (I2) from 2.0 to 10 dg/min; b) a density from 0.922 to 0.935 g/cc; and wherein the second ethylene-based polymer is present in an amount from 60 to 95 weight percent, based on the sum of the weight of the first polymer and the second polymer; and wherein the second ethylene-based polymer has a density greater than, or equal to, 0.924 g/cc; and wherein the first ethylene-based polymer has a melt index less than 2.5 dg/min.

PROCESSES TO PREPARE ETHYLENE-BASED POLYMER COMPOSITIONS

The invention provides a process to form an ethylene-based polymer composition, the process comprising at least the following: Step 1: polymerizing a first ethylene-based polymer in the presence of at least one molecular catalyst and a hydrocarbon chain transfer agent, and at a polymerization pressure of at least 14,000 psi; Step 2: polymerizing a second ethylene-based polymer. 1. A process to form an ethylene-based polymer composition , the process comprising at least the following:Step 1: polymerizing a first ethylene-based polymer in the presence of at least one molecular catalyst and a hydrocarbon chain transfer agent, and at a polymerization pressure of at least 14,000 psi;Step 2: polymerizing a second ethylene-based polymer2. The process of claim 1 , wherein the second ethylene-based polymer is polymerized in the presence of a free radical initiator.3. The process of claim 1 , wherein the first ethylene-based polymer and the second ethylene-based polymer are polymerized simultaneously.4. The process of claim 1 , wherein the first ethylene-based polymer is polymerized first claim 1 , and wherein the second ethylene-based polymer is polymerized in the presence of the first ethylene-based polymer.6. The process of claim 1 , wherein the molecular catalyst is soluble in supercritical ethylene.7. The process of claim 1 , wherein the first ethylene-based polymer is polymerized in the presence of an alumoxane cocatalyst.8. The process of claim 1 , wherein the free radical initiator is a peroxide.9. The process of claim 1 , wherein the polymerization temperature in Step 1 is greater than claim 1 , or equal to claim 1 , 195° C.10. The process of claim 1 , wherein no hydrogen is added to Step 1 or Step 2.11. The process of claim 1 , wherein the process further comprises polymerizing a third ethylene-based polymer.12. The process of claim 1 , wherein at least one alkyl aluminum is added to the process after Step 2.13. The process of claim 1 , wherein at least one ...

Adhesive and marking compositions made from interpolymers of ethylene/alpha-olefins

An adhesive composition comprises: (i) at least one ethylene/alpha-olefin interpolymer, (ii) at least one tackifier; and (iii) optionally at least one additive, such as a plasticizer, wax and antioxidant. Preferably, the ethylene/alpha-olefin interpolymer has a Mw/Mn from about 1.7 to about 3.5, at least one melting point, Tm, in degrees Celsius, and a density, d, in grams/cubic centimeter, wherein the numerical values of Tm and d correspond to the relationship: Tm>=858.91-1825.3(d)+1112.8(d)2. The composition has relatively higher SAFT temperature and can be used in hot melt adhesives pressure-sensitive adhesives, and thermoplastic marking paints.

Compositions comprising ethylene-carbon monoxide copolymers

The invention provides a composition comprising an ethylene-based polymer and wherein the ethylene-based polymer has the following properties: (A) a CO content from greater than 0 to less than 10 weight percent CO (carbon monoxide), based on the weight of the polymer, and (B) a melt index (I2) from 0.1 to less than 3 g/10 min; and (C) a density from 0.923 to 0.928 g/cc; and wherein the ethylene-based polymer has a melting point, Tm, in ° C., that meets the following relationship: Tm (° C.)<601.4*(Density N in g/cc)−447.8° C.

LDPE FOR USE AS A BLEND COMPONENT IN SHRINKAGE FILM APPLICATIONS

An ethylene-based polymer characterized as having a density from about 0.9 to about 0.94 grams per cubic centimeter, a molecular weight distribution (Mw/Mn) from about 4 to about 10, a melt index (I2) from about 0.05 to about 2 grams per 10 minutes, a gpcBR value greater than 0.05 as determined by a gpcBR Branching Index and a Y value greater than 0.4 is disclosed. This ethylene-based polymer is especially useful for blending with other polymers such as LLDPE. When converting the blends into film, especially shrink film, the film shows good optics, good shrink tension, high stiffness, high tensile modulus, and tensile strength. When this resin is blended at with a LLDPE on a blown film line, improvements are seen in haze, gloss, clarity, and MD and CD tear as compared to a comparative LDPE.

ETHYLENE-BASED POLYMERS AND PROCESSES TO MAKE THE SAME

A composition comprising an ethylene-based polymer, which comprises the following properties: a) (Mw(abs)/Mw(conv)−2.00)*(100,000 g/mol/Mw(abs))*CDF?IR #191 (MW≤10,000 g/mol)≥0.030; and b) a melt index (I2) from 0.30 to 2.50 g/10 min. 1. A composition comprising an ethylene-based polymer , which comprises the following properties:{'sub': 'IR', 'a) (Mw(abs)/Mw(conv)−2.00)*(100,000 g/mol/Mw(abs))*CDF(MW≤10,000 g/mol)≥0.030; and'}b) a melt index (I2) from 0.30 to 2.50 g/10 min.2. The composition of claim 1 , wherein the ethylene-based polymer has a CDF(at MW≤10 claim 1 ,000 g/mol)≥0.150.3. The composition of claim 1 , wherein the ethylene-based polymer has a CDF(at a MW≥1.2×10g/mol)≥0.020.4. The composition of claim 1 , wherein the ethylene-based polymer has a CDFs (at MW≥750 claim 1 ,000 g/mol)≥0.400.5. The composition of claim 1 , wherein the ethylene-based polymer has Mw(conv)/Mn(conv) from 7.00 to 11.00.6. The composition of claim 1 , wherein the ethylene-based polymer is formed in a reactor configuration comprising at least one tubular reactor.7. The composition of claim 1 , wherein the composition further comprises another polymer different from the ethylene-based polymer.8. The composition of claim 1 , wherein the ethylene-based polymer is a low density polyethylene (LDPE).9. An article comprising at least one component formed from the composition of .10. The article of claim 9 , wherein the article is a film. The present application claims the benefit of U.S. Application No. 62/338,283, filed on May 18, 2016, and incorporated herein by reference.Blown film production lines are typically limited in output by bubble stability. Blending Linear Low Density Polyethylene (LLDPE) with Low Density Polyethylene (LDPE) increases bubble stability, in part, due to the higher melt strength (MS) of the LDPE, and the increase in MS helps provide for an increase in film output. However, high MS resins typically have reduced the optics and toughness of the film. There is a need ...

Functionalized ethylene/-olefin interpolymer compositions

The invention relates to functionalized interpolymers derived from base olefin interpolymers, which are prepared by polymerizing one or more monomers or mixtures of monomers, such as ethylene and one or more comonomers, to form an interpolymer products having unique physical properties. The functionalized olefin interpolymers contain two or more differing regions or segments (blocks), resulting in unique processing and physical properties.

LOW DENSITY POLYETHYLENE WITH ENHANCED HOT TACK STRENGTH AND ADHESION-TO-METAL BY THE ADDITION OF IONOMERS

Polymer blends, films, and coated substrates that include the polymer blends. The polymer blends include at least 90% by weight low density polyethylene polymer and from 1 to 10% by weight ionomer. The LDPE polymer has a melt index (I)from 2 g/10 mins to 6 g/10 mins, and a molecular weight distribution from 5 to 11 as determined by a conventional gel permeation chromatography method. The ionomer includes an ethylene acid copolymer, in which from 15% to 70% of acid groups are neutralized by sodium cation based on the total number of acid groups in the acid copolymer. The ethylene acid copolymer is the polymerized reaction product of: at least 50% by wt. ethylene, from 2 wt. % to 40 wt. % of monocarboxylic acid monomer, and from 0 to 20 wt. % of alkyl acrylate, based on the total wt. % of the monomers present in the ethylene acid copolymer. 1. A polymer blend comprising:{'sub': '2', 'at least 90% by weight low density polyethylene (LDPE) polymer, wherein the LDPE polymer has a melt index (I) from 2 to 6 g/10 mins as determined in accordance with ASTM D1238 (190° C., 2.16 kg, Procedure B), and a molecular weight distribution (MWD=Mw/Mn) from 5 to 11 as determined by a conventional gel permeation chromatography method; and'} at least 50% by wt. ethylene, based on the total wt. % of the monomers present in the ethylene acid copolymer;', 'from 2 wt. % to 30 wt. % of monocarboxylic acid monomer, based on the total wt. % of the monomers present in the ethylene acid copolymer; and', 'from 0 wt. % to 25 wt. % of alkyl acrylate, based on the total wt. % of the monomers present in the ethylene acid copolymer., 'from 1 wt. % to 10% by weight ionomer, the ionomer comprising an ethylene acid copolymer having from 15% to 70% of the carboxylic acid groups neutralized as carboxylic acid salts comprising sodium cations based on the total number of acid groups in the polymer, wherein the ethylene acid copolymer is the polymerized reaction product of2. The polymer blend of claim 1 , ...

Interconnected Copolymers Of Ethylene In Combination With At Least One Polysiloxane

The invention provides a polymer comprising units derived from ethylene and siloxane, polymer having at least 0.15 units of amyl groups per 1000 carbon atoms as determined by C Nuclear Magnetic Resonance (NMR). 1. A polymer comprising units derived from ethylene and siloxane , the polymer having at least 0.15 units of amyl groups per 1000 carbon atoms as determined by C Nuclear Magnetic Resonance (NMR).2. The polymer of comprising a portion of the ethylene bonded to one or more silicon atoms of the siloxane.3. The polymer of wherein the polymer comprises at least one ethylene-based polymeric branch bonded to a silicon atom of the siloxane.4. The polymer of having a peak melting temperature Tm in ° C. and density in g/cmthat satisfies the mathematical relationship:{'br': None, 'i': 'Tm<', '771.5(° C.·cc/g)(density)−604(° C.).'}5. The polymer of having a density of at least 0.93 g/cm.6. The polymer of in which less than 40 weight percent of the siloxane is extractable by solvent extraction.7. The polymer of having an I/Iratio of least 13.8. The polymer of having an Iof less than 5.9. The polymer of having a heat of fusion (H) in Joules/grams (J/g) and density in g/cmthat satisfies the mathematical relationship:{'br': None, 'i': 'H', 'sub': 'f', 'sup': '2', '<2333 (J·cc/g)×(density)−2009 (J/g).'}10. A composition comprising the polymer of .11. An article comprising at least one component formed from the composition of .12. The article of in the form of a film.13. A process to form a polymer comprising units derived from ethylene and siloxane claim 11 , the process comprising:A. Contacting at least one siloxane with ethylene in the presence of a free-radical initiator in a first reactor or a first part of a multi-part reactor; andB. Reacting the siloxane with additional ethylene in the presence of the free-radical initiator to form an ethylene-based polymeric branch bonded to the siloxane in at least one other reactor or a later part of the multi-part reactor.14. The ...

Ethylene-based polymer compositions for use as a blend component in shrinkage film applications

An ethylene-based polymer composition has been discovered and is characterized by a Comonomer Distribution Constant greater than about 45. The new ethylene-based polymer compositions and blends thereof with one or more polymers, such as LDPE, are useful for making many articles, especially including films.

POLYETHYLENE WITH HIGH MELT STRENGTH FOR USE IN FILMS

The present invention is a method for producing a film particularly well suited for shrink film applications, said method comprising the steps of selecting a target polyethylene resin and then increasing the melt strength of the polyethylene resin by reacting the polyethylene resin with an alkoxy amine derivative, and then forming a film from the reacted target polyethylene. 1. A method for producing film particularly well suited for film applications , said method comprising the steps of:{'sup': 3', '3, 'a) selecting a target polyethylene resin having a density, as determined according to ASTM D792, in the range of from 0.90 g/cmto 0.955 g/cm, and a melt index, as determined according to ASTM D1238 (2.16 kg, 190° C.), in the range of from 0.01 g/10 min to 10 g/10 min;'}b) reacting an alkoxy amine derivative in an amount less than 900 parts derivative per million parts by weight of total polyethylene resin with the target polyethylene resin in an amount and under conditions sufficient to increase the melt strength of the polyethylene resin; andc) forming a film comprising the reacted target polyethylene resin.2. The method of wherein the alkoxy amine derivative corresponds to the formula:{'br': None, 'sub': 1', '2', '3, '(R)(R)N—O—R'}{'sub': 1', '2', '4', '42', '4', '42', '1', '2', '3, 'where Rand Rare each independently of one another, hydrogen, C-Calkyl or C-Caryl or substituted hydrocarbon groups comprising O and/or N, and where Rand Rmay form a ring structure together; and Ris hydrogen, a hydrocarbon or a substituted hydrocarbon group comprising O and/or N.'}3. The method of wherein the alkoxy amine derivative is a hydroxylamine ester.4. The method of wherein the hydroxyl amine ester is hydroxyl amine ester being 9-(acetyloxy)-3 claim 3 ,8 claim 3 ,10-triethyl-7 claim 3 ,8 claim 3 ,10-trimethyl-1 claim 3 ,5-dioxa-9-azaspiro[5.5]undec-3-yl]methyl octadecanoate.5. The method of wherein the resulting film is a shrink film.6. A film comprising: [{'sup': 3', '3, 'i) ...

ETHYLENE/ALPHA-OLEFIN INTERPOLYMER SUITABLE FOR USE IN SHRINKAGE FILM APPLICATIONS, AND ARTICLES MADE THEREFROM

The instant invention provides an ethylene/alpha-olefin interpolymer suitable for use in shrinkage film applications, and articles made therefrom. The ethylene/alpha-olefin interpolymer according to the present invention has a CDBI of less than 60%, and comprises at least two fractions in crossfractionation of the ethylene/alpha-olefin interpolymer, eluting from 85° C. to 90° C. and from 90° C. to 95° C., comprising a weight fraction ratio of >0.68 and a molecular weight homogeneity index of greater than 0.65; wherein the weight fraction ratio is the ratio of the weight of polymer in each fraction divided by the weight of polymer eluting between 95° C. and 100° C. and the molecular weight homogeneity index is the ratio of the weight average molecular weight of the polymer in the fraction divided by the weight average molecular weight of the polymer eluting between 95° C. and 100° C., and wherein the ethylene/alpha-olefin interpolymer has a density in the range of 0.920 to 0.940 g/cm. 1. An ethylene/alpha-olefin interpolymer , wherein the ethylene/alpha-olefin interpolymer has a CDBI of less than 60% , and wherein said ethylene/alpha-olefin interpolymer comprises at least two fractions in crossfractionation of the ethylene/alpha-olefin interpolymer , eluting from 85° C. to 90° C. and from 90° C. to 95° C. , comprising a weight fraction ratio of >0.68 and a molecular weight homogeneity index of greater than 0.65; wherein the weight fraction ratio is the ratio of the weight of polymer in each fraction divided by the weight of polymer eluting between 95° C. and 100° C. and the molecular weight homogeneity index is the ratio of the weight average molecular weight of the polymer in the fraction divided by the weight average molecular weight of the polymer eluting between 95° C. and 100° C. , and wherein said ethylene/alpha-olefin interpolymer has a density in the range of 0.920 to 0.940 g/cm.2. A process to make an ethylene/alpha-olefin interpolymer comprising the steps ...

ETHYLENE-BASED POLYMERS AND PROCESSESS TO MAKE THE SAME

The invention provides an ethylene-based polymer comprising the following properties: A) a MWDconv from 7 to 10; and B) a “normalized LSF” greater than, or equal to, 9.5. 1. An ethylene-based polymer comprising the following properties:{'sub': 'conv', 'A) a MWDfrom 7 to 10;'}B) a “normalized LSF” greater than, or equal to, 9.5.2. The ethylene-based polymer of claim 1 , wherein the ethylene-based polymer further comprises C) a melt index greater than claim 1 , or equal to claim 1 , 1.0 g/10 min.3. The ethylene-based polymer of claim 1 , wherein the ethylene-based polymer is formed in a high pressure (P greater than 100 MPa) polymerization process.4. The ethylene-based polymer of claim 1 , wherein the ethylene-based polymer is a low density polyethylene (LDPE).5. The ethylene-based polymer of claim 1 , wherein the ethylene-based polymer has ≧0.1 amyl branche(s) per 1000 carbon atoms.6. The ethylene-based polymer of claim 1 , wherein the ethylene-based polymer has a density from 0.90 to 0.95 g/cc.7. The ethylene-based polymer of claim 1 , wherein the ethylene-based polymer has a melt strength from 5 to 15 cN.8. The ethylene-based polymer of claim 1 , wherein the ethylene-based polymer has a rheology ratio (V0.1/V 100) claim 1 , at 190° C. claim 1 , from 10 to 25.9. A composition comprising the ethylene-based polymer of .10. The composition of claim 9 , further comprising a heterogeneously branched ethylene/α-olefin interpolymer claim 9 , and preferably a heterogeneously branched ethylene/α-olefin copolymer.11. The composition of claim 9 , wherein the ethylene-based polymer is present at greater than claim 9 , or equal to claim 9 , 10 weight percent claim 9 , based on the weight of the composition.12. An article comprising at least one component formed from the composition of .13. The article of claim 11 , wherein the article is a film.14. The article of claim 13 , wherein the film has a haze less than 8% and a MD shrink tension greater than 9 psi.15. The article of ...

Process to Produce Enhanced Melt Strength Ethylene/Alpha-Olefin Copolymers and Articles Thereof

An ethylene/α-olefin copolymer comprising units derived from ethylene; and units derived from at least one α-olefin; wherein the ethylene/α-olefin copolymer has a density in the range of from 0.90 to 0.94 g/cc; a melt index (I) in the range of from 0.05 to 50 dg/min; an Mw/Mn of from 3 to 5; and from 300 to 500 vinyl unsaturations per 1,000,000 carbon atoms in the ethylene/α-olefin copolymer is provided. Also provided is a process for producing an ethylene/α-olefin copolymer comprising: (1) polymerizing ethylene and one or more α-olefins in a polymerization reactor; (2) thereby producing an enhanced melt strength ethylene/α-olefin copolymer having from 300 to 500 vinyl unsaturation units per 1,000,000 carbon atoms, a density in the range of from 0.90 to 0.94 g/cc; a melt index (I) in the range of from 0.05 to 50 dg/min; and a Mw/Mn of from 3 to 5. 1. An ethylene/α-olefin copolymer comprising:units derived from ethylene; andunits derived from at least one α-olefin;{'sub': '2', 'wherein the ethylene/α-olefin copolymer has a density in the range of from 0.90 to 0.94 g/cc; a melt index (I) in the range of from 0.05 to 50 dg/min; an Mw/Mn of from 3 to 5; and'}from 300 to 500 vinyl unsaturations per 1,000,000 carbon atoms in the ethylene/α-olefin copolymer, and wherein the ethylene/α-olefin copolymer is produced using a polymerization step occurring at a temperature of at least 205° C.2. A process for producing an ethylene/α-olefin copolymer comprising the steps of: (1) polymerizing ethylene and one or more α-olefins in a polymerization reactor wherein the ethylene/α-olefin copolymer is produced using a polymerization step occurring at a temperature of at least 205° C.; (2) thereby producing an enhanced melt strength ethylene/α-olefin copolymer having from 300 to 500 vinyl unsaturation units per 1 ,000 ,000 carbon atoms , a density in the range of from 0.90 to 0.94 g/cc; a melt index (I) in the range of from 0.05 to 50 dg/min; and a Mw/Mn of from 3 to 5.3. The process ...

CAST FILMS, AND ARTICLES MADE THEREFROM

Disclosed herein is a cast film comprising a polyethylene composition comprising the reaction product of ethylene and optionally one or more alpha-olefin comonomers, wherein said polyethylene composition is characterized by the following properties: a melt index, I2, measured according to ASTM D1238 (2.16 kg, 190° C.), of from 1 to 20 g/10 min; a density (measured according to ASTM D792) of from 0.935 to 0.970 g/cm3; a melt flow ratio, I/I, wherein Iis measured according to ASTM D1238 (10 kg, 190° C.) of from 5.5 to 7.0; a molecular weight distribution (Mw/Mn) of from 2.2 to 3.5; and a vinyl unsaturation of greater than 0.12 vinyls per one thousand carbon atoms present in the backbone of the composition. 1. A cast film comprising a polyethylene composition comprising the reaction product of ethylene and optionally one or more alpha-olefin comonomers , wherein said polyethylene composition is characterized by the following properties:{'sub': '2', 'a. a melt index, I, measured according to ASTM D 1238 (2.16 kg, 190° C.), of from 1 to 20 g/10 min;'}{'sup': '3', 'b. a density (measured according to ASTM D792) of from 0.940 to 0.970 g/cm;'}{'sub': 10', '2', '10, 'c. a melt flow ratio, I/I, wherein Iis measured according to ASTM D1238 (10 kg, 190° C.) of from 5.5 to 7.0;'}{'sub': w', 'n, 'd. a molecular weight distribution (M/M) of from 2.2 to 3.5; and'}e. a vinyl unsaturation of greater than 0.12 vinyls per one thousand carbon atoms present in the backbone of the composition.2. The cast film of claim 1 , wherein the cast film further comprises a low density polyethylene having a melt index claim 1 , I claim 1 , range of from 0.1-20 g/10 min.3. The cast film of claim 2 , wherein the cast film comprises from 5-30% of the low density polyethylene.4. The cast film of claim 1 , wherein the cast film is a monolayer film.5. The cast film of claim 1 , wherein the cast film is a multilayer film.6. The cast film of claim 1 , wherein the cast film is a cast embossed film.7. The ...

Ethylene-Based Polymers with Low Hexane Extractables and Low Densities

Ethylene-based polymers comprising the following properties: (A) a density less than 0.9190 g/cc; (B) a hexane extractable level that meets the following equation: hexane extractable level ≤A+B [log(12)], where A=2.65 wt %. and B—0.25 wt %[log (dg/min)]; based on total weight of the ethylene-based polymer; (C) a G′ (at G″=500 Pa, 1 70° C.) that meets the following equation: G′≥C+D [log(12)], where C=150 Pa, and D=−60 Pa/[log(dg/min)]; and (D) a melt index (12) from 0.7 to 20 dg/min; are made in high pressure tubular process that comprises at least three reaction zones with the peak polymerization temperature of the first reaction zone ≥320° C. and the peak polymerization temperature of the last reaction zone ≤290° C. 1. An ethylene-based polymer formed from a free-radical , high pressure polymerization process that includes a reactor configuration comprising , as reactors , only one or more tubular reactors , said polymer comprising the following properties:(A) a density less than 0.9190 g/cc;(B) a hexane extractable level that meets the following equation: hexane extractable level ≤A+B[log (I2)], where A=2.65 wt %, and B=0.25 wt %/[log(dg/min)]; based on total weight of the ethylene-based polymer;(C) a G′ (at G″=500 Pa, 170° C.) that meets the following equation: G′≥C+D[log (I2)], where C=150 Pa, and D=−60 Pa/[log(dg/min)]; and(D) a melt index (I2) from 0.7 to 20 dg/min.2. The ethylene-based polymer of in which the ethylene-based polymer is an LDPE homopolymer.3. A process for producing an ethylene-based polymer claim 1 , the process comprising polymerizing a reaction mixture comprising ethylene in a reaction configuration comprising a first tubular reaction zone 1 and a last tubular reaction zone i claim 1 , in which i is greater than or equal to (≥) 3 claim 1 , under high pressure polymerization conditions claim 1 , and in which the first reaction zone 1 has a peak polymerization temperature of ≥320° C. claim 1 , and the last reaction zone i has a peak ...

Process for Producing Functionalized Ethylene-Based Polymers with a Low Gel Content

Functionalized ethylene-based polymers are prepared by a process comprising the step of reacting a first composition comprising an ethylene-based polymer with at least the following: (A) at least one carbon-carbon (C—C) free radical initiator of Structure I: wherein R, R, R, R, Rand Rare each, independently, hydrogen or a hydrocarbyl group; and wherein, optionally, two or more R groups (R, R, R, R, Rand R) form a ring structure; and with the provisos that (i) at least one of Rand Ris a hydrocarbyl group of at least two carbon atoms, and (ii) at least one of Rand Ris a hydrocarbyl group of at least two carbon atoms; and (B) at least one free radical initiator other than the carbon-carbon (C—C) free radical initiator of Structure I (a non-C—C free radical initiator), e.g., a peroxide; and (C) at least one functionalization agent, e.g., maleic anhydride. 2. The process of wherein the first composition further comprises a secondary antioxidant.3. The process of claim 1 , wherein the ethylene-based polymer of the first composition is an ethylene/α-olefin copolymer.6. The process of claim 1 , wherein the C—C free-radical initiator has a decomposition temperature of greater than claim 1 , or equal to claim 1 , (≥)125° C. based on a DSC measurement.7. The process of claim 1 , wherein at least one of the non-C—C free radical initiators of (B) is one of the following: an inorganic or organic peroxide claim 1 , an azo compound claim 1 , a sulfur compound claim 1 , or a halogen compound.8. A composition comprising a functionalized ethylene-based polymer made by the process of .9. The composition of claim 8 , wherein the composition has a GI 200 gel content less than claim 8 , or equal to claim 8 , 12 claim 8 , as determined by the GI 200 test method with a film thickness of 76±5 microns.10. An article comprising at least one component formed from the composition of . The present application claims the benefit of U.S. Provisional Application 62/288,017, filed on Jan. 28, 2016, ...

ETHYLENE-BASED POLYMER COMPOSITIONS FOR IMPROVED EXTRUSION COATINGS

The invention provides a composition comprising at least the following: 1. A composition comprising at least the following:a) a first composition comprising at least one first ethylene-based polymer, formed by high pressure, free-radical polymerization, and wherein the first composition comprises the following properties: a melt index (I2) from 1.0 to 15.0 g/10 min, and density from 0.910 to 0.940 g/cc;b) a second composition comprising at least one second ethylene-based polymer, and wherein the second composition comprises the following properties: a melt index (I2) from 1.0 to 1000 g/10 min, and a density greater than 0.940 g/cc;wherein the melt index (I2) ratio of the melt index (I2) of the second composition to the melt index (I2) of the first composition is from 0.50 to 2.70;wherein the composition comprises the following properties: melt index (I2) from 2.0 to 20.0 g/10 min, and a density from 0.910 to 0.935 g/cc; andwherein the first composition is present in an amount from 65 to 95 wt %, based on the weight of the composition.2. The composition of claim 1 , wherein the melt index (I2) ratio of “the composition” to “the second composition” is from 0.30 to 2.00.3. The composition of claim 1 , wherein the first ethylene-based polymer is prepared in a tubular reactor.4. The composition of claim 1 , wherein the first composition comprises ≥95 wt % of the first ethylene-based polymer claim 1 , based on the weight of the first composition.5. The composition of claim 1 , wherein the first ethylene-based polymer is a low density polyethylene (LDPE).6. The composition of claim 1 , wherein the second composition comprises ≥95 wt % of the second ethylene-based polymer claim 1 , based on the weight of the second composition.7. The composition of claim 1 , wherein the second composition has a density from 0.940 to 0.966 g/cc.8. The composition of claim 1 , wherein the second ethylene-based polymer is a high density polyethylene (HDPE).9. The composition of claim 1 , ...

Ethylene-based polymers and processes to make the same

The invention provides a process to form an ethylene-based polymer, said process comprising polymerizing ethylene in the presence of at least one free-radical agent, and in the presence of a “metal alkyl-containing compound” selected from the group consisting of the following: i) at least one “Group II metal alkyl-containing compound,” ii) at least one “Group III metal alkyl-containing compound,” or iii) a combination of i) and ii). The invention also provides a composition comprising at least one ethylene-based polymer, prepared from a free-radical polymerization, and wherein the ethylene-based polymer has the following property: y>0.28567x−0.00032, wherein y=vinyl/1000 C, as determined by 1H NMR, and x=mol % polymerized ?-olefin, as determined by 13C NMR. The invention also provides a composition comprising at least one ethylene-based polymer, prepared from a free-radical polymerization, and wherein the ethylene-based polymer has the following properties: A) a vinyl content greater than, or equal to, 0.3 vinyl per 1000 C (total carbons), and B) a polymerized alpha-olefin level less than, or equal to, 1.00 mole percent, based on the total moles of polymerized monomers.

LOW DENSITY ETHYLENE-BASED COMPOSITIONS WITH IMPROVED MELT STRENGTH, OUTPUT, AND MECHANICAL PROPERTIES

The invention provides a composition comprising the following: A) a first ethylene-based polymer, formed by a high pressure, free-radical polymerization process, and comprising the following properties: a) a Mw(abs)/Mw(GPC)<2.2; and b) a MS versus I2 relationship: MS≧C×[(I2)], where C=13.5 cN/(dg/min), and D=−0.55, c) a melt index (I2) from 0.1 to 0.9 g/10 min; and B) a second ethylene-based polymer; and wherein the second ethylene-based polymer has a melt index (I2) from 0.1 to 4.0 g/10 min. 1. A composition comprising the following: a) a Mw(abs)/Mw(GPC)<2.2, and', {'sup': D', 'D, 'b) a MS versus I2 relationship: MS≧C×[(I2)], where C=13.5 cN/(dg/min), and D=−0.55,'}, 'c) a melt index (I2) from 0.1 to 0.9 g/10 min; and, 'A) a first ethylene-based polymer, formed by a high pressure, free-radical polymerization process, and comprising the following properties 'wherein the second ethylene-based polymer has a melt index (I2) from 0.1 to 4.0 g/10 min.', 'B) a second ethylene-based polymer; and'}2. The composition of claim 1 , wherein the first ethylene-based polymer is present in an amount greater than 0.5 weight percent claim 1 , based on the sum of the weight of first ethylene-based polymer and the second ethylene-based polymer.3. The composition of claim 1 , wherein the second ethylene-based polymer present in an amount from 10 to 95 wt % claim 1 , based on weight of the composition.4. The composition of claim 1 , wherein the second ethylene-based polymer is an ethylene/α-olefin interpolymer.5. The composition of claim 4 , wherein the ethylene/α-olefin interpolymer is a heterogeneously branched ethylene/α-olefin interpolymer.6. The composition of claim 1 , wherein the composition has a Melt Strength (190° C.) from 5 cN to 40 cN.7. The composition of claim 1 , wherein the composition has a density from 0.910 to 0.925 g/cc.8. The composition of claim 1 , wherein the composition has a melt index (I2) from 0.1 to 1.5 g/10 min.9. The composition of claim 1 , wherein when ...

Ethylene-based polymers comprising units derived from carbon monoxide and a rheology modifying agent

The invention provides a composition comprising an ethylene-based polymer, comprising at least the following: A) a unit derived from Carbon Monoxide (CO); and B) a unit derived from at least one Rheology Modifying Agent (RMA) selected from the following RMA1, RMA2, RMA3, RMA4, RMA5, each as described herein, or a combination thereof.

PROCESSES TO PREPARE ETHYLENE-BASED POLYMERS USING A DISTRIBUTION OF CARBON MONOXIDE

The invention provides a high pressure, free-radical polymerization process for polymerizing an ethylene-based polymer, said process comprising polymerizing ethylene, in a reactor configuration comprising a reactor with at least two reaction zones, a first reaction zone and a reaction zone located downstream from the first reaction zone; and wherein CO (carbon monoxide) is added to the reactor in at least one reaction zone located downstream from the first reaction zone, and wherein, less than, or equal to, 95 weight percent of the total amount of CO, is fed to the first reaction zone. 1. A high pressure , free-radical polymerization process for polymerizing an ethylene-based polymer , said process comprising polymerizing ethylene , in a reactor configuration comprising a reactor with at least two reaction zones , a first reaction zone and a reaction zone located downstream from the first reaction zone; and whereinCarbon Monoxide (CO) is added to the reactor in at least one reaction zone located downstream from the first reaction zone, andwherein, less than, or equal to, 95 weight percent of the total amount of CO, is fed to the first reaction zone.2. The process of claim 1 , wherein a first composition claim 1 , comprising ethylene claim 1 , is fed to one reaction zone claim 1 , and a second composition claim 1 , comprising ethylene claim 1 , is fed to another reaction zone.3. The process of claim 2 , wherein each composition further comprises CO.4. The process of claim 1 , wherein less than 40 weight percent of the total CO is fed to the first reaction zone.5. The process of claim 3 , wherein the “concentration of CO” in the second composition is at least 1.2 times the “concentration of CO” in the first composition.6. The process of claim 1 , wherein at least one reaction zone is operated at a maximum polymerization temperature from 305° C. to 340° C.7. The process of claim 1 , wherein an upstream reaction zone is operated at a maximum polymerization temperature ...

Low density ethylene-based compositions with improved melt strength, output, and mechanical properties

The invention provides a composition comprising the following: A) a first ethylene-based polymer, formed by a high pressure, free-radical polymerization process, and comprising the following properties: a) a Mw(abs)/Mw(GPC)<2.2; and b) a MS versus I2 relationship: MS≥C×[(I2) D ], where C=13.5 cN/(dg/min) D , and D=−0.55, c) a melt index (I2) from 0.1 to 0.9 g/10 min; and B) a second ethylene-based polymer; and wherein the second ethylene-based polymer has a melt index (I2) from 0.1 to 4.0 g/10 min.

LOW DENSITY POLYETHYLENE WITH ENHANCED ADHESION-TO-ALUMINUM FOIL BY BLENDING-IN ACID COPOLYMER RESINS

The polymer blend includes at least 90% by weight low density polyethylene (LDPE) polymer and from 1% to 10% by weight acid copolymer based on the total weight of the polymer blend. In the polymer blend, the LDPE polymer has a melt index (I? 2#191) from 2 g/10 min to 8 g/10 min as determined in accordance with ASTM D1238, and a molecular weight distribution from 5 to 10.5. In the polymer blend, the acid copolymer is a polymerized reaction product of: at least 60% by weight ethylene, based on the total weight of the monomers present in the ethylene acid copolymer; from 1% to 20% by weight monocarboxylic acid monomer, based on the total weight of the monomers present in the ethylene acid copolymer; and from 0 to 20% by weight alkyl acrylate monomer, based on the total weight of the monomers present in the ethylene acid copolymer. 1. A polymer blend comprising:{'sub': '2', 'at least 90% by weight low density polyethylene (LDPE) polymer based on the total weight of the polymer blend, the LDPE polymer having a melt index (I) from 2 g/10 min to 16 g/10 min as determined in accordance with ASTM D1238 (190° C., 2.16 kg), and a molecular weight distribution (MWD) from 5 to 10.5 as determined by a conventional gel permeation chromatography method; and'} at least 60% by weight ethylene, based on the total weight of the monomers present in the ethylene acid copolymer;', 'from 1% to 20% by weight monocarboxylic acid monomer, based on the total weight of the monomers present in the ethylene acid copolymer; and', 'from 0 to 20% by weight alkyl acrylate monomer, based on the total weight of the monomers present in the ethylene acid copolymer., 'from 1% to 10% by weight acid copolymer based on the total weight of the polymer blend, wherein the acid copolymer is a polymerized reaction product of2. The polymer blend of claim 1 , wherein the LDPE polymer has a density of 0.910 g/cmto 0.935 g/cmand an MWD of 8.5 to 10.5.3. The polymer blend of claim 1 , wherein the melt index of the ...

BIORIENTED POLYETHYLENE FILM

The present invention discloses a process for forming a biaxially oriented film. The process includes first selecting a polyolefin resin wherein said polyolefin resin comprises a linear low density polyethylene resin characterized by having from 9 to 35 weight percent of the total weight of linear low density polyethylene resin eluting from a CEF at a temperature greater than 97.0° C.; and further characterized by having a CDR of from 33 to 80 and a Mw Ratio of from 0.15 to 0.45. Next a film is formed from the polyolefin resin selected in the first step. Finally the film formed in the second step is oriented in a sequential manner. The films produced by this process are characterized by having an ultimate elongation at least 1.5 times greater in the MD as compared to the CD and the 2% secant modulus is a least 1.25 times greater in the CD as compared to the MD. The films are further characterized by having free residual shrinkage of less than 10% in the MD and less than 10% in the CD when exposed to a temperature of 90° C. for 10 minutes. 2. The process of wherein the film formed in step (b) is oriented in a range of from 3 to 5 times in the machine direction and from 3 to 7 times in the cross direction.3. The process of wherein the film is characterized by having elongation at least 2 times greater in the MD as compared to the CD.4. The process of wherein the film is characterized by having a 2% secant modulus at least 1.75 times greater in the MD as compared to the CD.5. The process of wherein the free residual shrinkage is less than 5% in at least one of the MD or CD.6. The process of wherein the polyolefin resin has a highest melting point greater than or equal to 120° C. and a heat of fusion greater than 137 J/g.7. The process of wherein the polyolefin resin has a melt index (190° C. claim 1 , 2.16 kg) in the range of from 2 to 15 g/10 minutes.8. The process of wherein the polyolefin resin has a density in the range of from 0.91 to 0.935 g/cm.9. The process of ...

LONG CHAIN BRANCHED (LCB), BLOCK, OR INTERCONNECTED COPOLYMERS OF ETHYLENE IN COMBINATION WITH ONE OTHER POLYMER

An ethylenic polymer comprising amyl groups from about 0.1 to about 2.0 units per 1000 carbon atoms as determined by Nuclear Magnetic Resonance and both a peak melting temperature, T, in ° C., and a heat of fusion, H, in J/g, as determined by DSC Crystallinity, where the numerical values of Tand Hcorrespond to the relationship T≧(0.2143*H)+79.643. An ethylenic polymer comprising at least one preparative TREF fraction that elutes at 95° C. or greater using a Preparative Temperature Rising Elution Fractionation method, where at least one preparative TREF fraction that elutes at 95° C. or greater has a gpcBR value greater than 0.05 and less than 5 as determined by gpcBR Branching Index by 3D-GPC, and where at least 5% of the ethylenic polymer elutes at a temperature of 95° C. or greater based upon the total weight of the ethylenic polymer. 120-. (canceled)21. An ethylenic polymer comprising at least one preparative TREF fraction that elutes at 95° C. or greater using a Preparative Temperature Rising Elution Fractionation method , where at least one preparative TREF fraction that elutes at 95° C. or greater has a gpcBR value greater than 0.05 and less than 5 as determined by gpcBR Branching Index by 3D-GPC , and where at least 5 weight percent of the ethylenic polymer elutes at a temperature of 95° C. or greater based upon the total weight of the ethylenic polymer.22. An ethylenic polymer comprising at least one preparative TREF fraction that elutes at 90° C. or greater using a Preparative Temperature Rising Elution Fractionation method , where at least one preparative TREF fraction that elutes at 90° C. or greater has a branching level greater than about 2 methyls per 1000 carbon atoms as determined by Methyls per 1000 Carbons Determination on P-TREF Fractions , and where at least 7.5 weight percent of the ethylenic polymer elutes at a temperature of 90° C. or greater based upon the total weight of the ethylenic polymer.23. An ethylenic polymer comprising at least one ...

Compositions containing low density ethylene-based polymers with high melt strength and films formed from the same

The invention provides a composition comprising the following: A) a first ethylene-based polymer, formed by a high pressure, free-radical polymerization process, and comprising the following properties: a) a Mw(abs) versus I2 relationship: Mw(abs)<A×[(I2) B ], where A=5.00×10 2 (kg/mole)/(dg/min) B , and B=−0.40; and b) a MS versus I2 relationship: MS≧C×[(I2) D ], where C=13.5 cN/(dg/min) D , and D=−0.55, c) a melt index (I2) from greater than 0.9 to 2.5 g/10 min; and B) a second ethylene-based polymer; and wherein the second ethylene-based polymer has a melt index (I2) from 0.1 to 4.0 g/10 min.

FREE-RADICAL PROCESSES TO MAKE ETHYLENE-BASED POLYMERS USING ALKLYATED PHENOLS

The invention provides a process to form an ethylene-based polymer, said process comprising polymerizing ethylene in presence of at least the following: A) a free-radical agent; B) an alkylated phenol selected from Formula (I), wherein R1, R2, R3, R4 and R5 are each, independently, hydrogen or an alkyl; and C) a “metal alkyl-containing compound” selected from the group consisting of the following: i) at least one “Group II metal alkyl-containing compound,” ii) at least one “Group III metal alkyl-containing compound,” and iii) a combination of i) and ii). 2. The process of claim 1 , wherein the alkylated phenol is present in an amount less than claim 1 , or equal to claim 1 , 1000 mole ppm claim 1 , based on the total moles of ethylene added to the polymerization.3. The process of claim 1 , wherein the alkylated phenol is present in an amount from “greater than zero” to less than claim 1 , or equal to claim 1 , 1000 mole ppm claim 1 , based on the total moles of ethylene added to the polymerization.4. The process of claim 1 , wherein the “metal alkyl-containing compound” comprises at least one Al-alkyl bond.5. The process of claim 1 , wherein the “metal alkyl-containing compound” is a “Group III metal alkyl-containing compound.”6. The process of claim 1 , wherein the metal of the “metal alkyl-containing compound” is aluminum.7. The process of claim 1 , wherein the free-radical agent is a peroxide.8. The process of claim 1 , wherein the polymerization temperature is from 140° C. to 350° C.9. The process of claim 1 , wherein the polymerization takes place at a polymerization pressure of at least 14 claim 1 ,000 psi.10. The process of claim 1 , wherein the ethylene-based polymer is a LDPE homopolymer.11. A process for polymerizing an ethylene-based polymer composition claim 1 , said process comprising at least the following steps:1) polymerizing ethylene in the presence of at least one molecular catalyst, a hydrocarbon chain transfer agent, and a “metal alkyl-containing ...

MULTILAYER CAST FILMS AND METHODS OF MAKING THEREOF

Embodiments disclosed herein include multilayer cast films having a cling layer and a release layer, wherein the cling layer comprises (i) a first polyethylene composition, and (ii) ultra-low density polyethylene, very low density polyethylene, ethylene/alpha-olefin elastomer, propylene-based elastomer, or combinations thereof; and the release layer comprises a second polyethylene composition. 1. A multilayer cast film having a cling layer and a release layer , wherein:the cling layer comprises: [{'sub': '2', '(a) a melt index, I, of greater than 5.0 to 12.0 g/10 min;'}, '(b) a density of 0.905 to 0.920 g/cc;', '(c) a melt flow ratio, I10/I2, of 6.0 to 7.6; and', '(d) a molecular weight distribution, (Mw/Mn) of from 2.6 to 3.5 and, '(i) a first polyethylene composition which comprises the reaction product of ethylene and, optionally, one or more alpha olefin comonomers, wherein the first polyethylene composition is characterized by the following properties(ii) a polymer selected from ultra-low density polyethylene, very low density polyethylene, ethylene/alpha-olefin elastomer, propylene-based elastomer, or combinations thereof; and [{'sub': '2', '(a) a melt index, I, of greater than 5.0 to 12.0 g/10 min;'}, '(b) a density of 0.905 to 0.920 g/cc;', '(c) a melt flow ratio, I10/I2, of 6.0 to 7.6; and', '(d) a molecular weight distribution, (Mw/Mn) of from 2.6 to 4.0., 'the release layer comprises a second polyethylene composition which comprises the reaction product of ethylene and, optionally, one or more alpha olefin comonomers, wherein the second polyethylene composition is characterized by the following properties2. The multilayer cast film of claim 1 , wherein the release layer further comprises a low density polyethylene having a 0.910 to 0.930 g/cc and a melt index of 0.5 to 4.0 g/10 min.3. The multilayer cast film of claim 1 , wherein the first polyethylene composition and the second polyethylene composition is formed in the presence of a catalyst composition ...

MULTI-LAYERED SHRINK FILMS

A multi-layered shrink film comprising: at least three layers including two skin layers and at least one core layer; wherein at least one layer comprises from 10 to 100 weight percent units derived from one or more ethylene-based polymer compositions characterized by having Comonomer Distribution Constant in the range of from 75 to 220, a vinyl unsaturation of from 30 to 100 vinyls per one million carbon atoms present in the backbone of the ethylene-based polymer composition; a zero shear viscosity ratio (ZSVR) in the range from at least 2.5 to 15; a density in the range of 0.924 to 0.940 g/cm, a melt index (I) in the range of from 0.1 to 1 g/10 minutes, a molecular weight distribution (Mw/Mn) in the range of from 2.5 to 10, and a molecular weight distribution (Mz/Mw) in the range of from 1.5 to 4; and wherein the multi-layered film exhibits at least one characteristic selected from the group consisting of 45 degree gloss of at least 50%, a total haze of 15% or less, an internal haze of 8% or less, 1% CD Secant Modulus of 43,000 psi or greater, 1% MD Secant Modulus of 38,000 psi or greater, CD shrink tension of at least 0.7 psi, and/or MD shrink tension of at least 10 psi.

BLOWN FILMS HAVING IMPROVED HAZE, AND ARTICLES MADE THEREFROM

Disclosed herein is a blown film comprising at least 50 wt. % of a polyethylene composition comprising the reaction product of ethylene and optionally, one or more alpha-olefin comonomers, wherein the polyethylene composition is characterized by the following properties: a melt index, I, of from 0.1 to 2 g/10 min; a density of from 0.940 to 0.970 g/cm; a melt flow ratio, I/I, of from 5.5 to 7.2; and a molecular weight distribution (Mw/Mn) of from 2.2 to 3.5. 1. A blown film comprising at least 50 wt. % of a polyethylene composition comprising the reaction product of ethylene and optionally , one or more alpha-olefin comonomers , wherein the polyethylene composition is characterized by the following properties:{'sub': '2', 'a. a melt index, I, of from 0.1 to 2 g/10 min;'}{'sup': '3', 'b. a density of from 0.940 to 0.970 g/cm;'}{'sub': 10', '2, 'c. a melt flow ratio, I/I, of from 5.5 to 7.2; and'}d. a molecular weight distribution (MWD) of from 2.2 to 3.5.2. The blown film of claim 1 , wherein the polyethylene composition has a vinyl unsaturation of greater than 0.12 vinyls per one thousand carbon atoms.3. The blown film of wherein the polyethylene composition has a melt index claim 1 , I claim 1 , of from 0.1 to less than 1 g/10 min4. The blown film of claim 1 , wherein the polyethylene composition has a melt index claim 1 , I claim 1 , of from 0.5 to less than 1.5 g/10 min.5. The blown film of claim 1 , wherein the polyethylene composition is formed in the presence of a catalyst composition comprising a multi-metallic procatalyst via solution polymerization in at least one reactor.6. The blown film of claim 5 , wherein the solution polymerization occurs in a single reactor.7. The blown film of claim 1 , wherein the blown film exhibits a total haze value of less than 30% for a 1 mil monolayer blown film.8. The blown film of claim 1 , wherein the blown film is a monolayer film.9. The blown film of claim 1 , wherein the blown film forms one or more layers of a ...

PROCESS FOR MAKING HIGH PRESSURE FREE RADICAL ETHYLENE COPOLYMERS

A high pressure polymerization process to form an ethylene-based polymer, the process comprising at least the following step: polymerizing a reaction mixture comprising ethylene and at least one comonomer, using a reactor system comprising a reactor configuration, and the following: (A) at least two reaction zones, a zone (reaction zone 1) and an ith zone (reaction zone i where i≥2), (B) at least two ethylene-based feed streams, each comprising a percentage of the total make-up ethylene fed to the polymerization process, and wherein a first stream is sent to reaction zone 1 and a second stream is sent to reaction zone i; (C) a control system to control the percentage of the total make-up ethylene in the stream sent to reaction zone 1, and the percentage of the total make-up ethylene in the stream sent to reaction zone i, and wherein the ratio (Q) of the molar concentration of the at least one comonomer fed to the first reaction zone, to the molar concentration of comonomer in the sum of all ethylene-based feeds to the reactor configuration, meets the following Equation 1: 0.23 ln(r1)−2.16≤Q≤−0.25 ln(r1)+2.15 (Equation 1); and wherein the comonomer has a reactivity ratio (r1) as follow: 0.3≤r1≤5.0, and a boiling point (1 atm)≤150° C. 1. A high pressure polymerization process to form an ethylene-based polymer , the process comprising at least the following step:polymerizing a reaction mixture comprising ethylene and at least one comonomer, using a reactor system comprising a reactor configuration, and the following:(A) at least two reaction zones, a first reaction zone (reaction zone 1) and an ith reaction zone (reaction zone i where i≥2),(B) at least two ethylene-based feed streams, each feed stream comprising a percentage of the total make-up ethylene fed to the polymerization process, and wherein a first ethylene-based feed stream is sent to reaction zone 1 and a second ethylene-based feed stream is sent to reaction zone i;(C) a control system to control the ...

A POLYETHYLENE BLEND COMPOSITION AND FILM MADE THEREFROM

A polyethylene blend composition suitable for film applications comprising from 10 to 100 percent by weight of an ethylene-based polymer made by the process of: selecting an ethylene/α-olefin interpolymer (LLDPE) having a Comonomer Distribution Constant (CDC) in the range of from 75 to 300, a vinyl unsaturation of less than 150 vinyls per one million carbon atoms of the ethylene/α-olefin interpolymer; a zero shear viscosity ratio (ZSVR) in the range from 4 to 50; a density in the range of from 0.925 to 0.950 g/cm, a melt index (I) in a range of from 0.1 to 2.5 g/10 minutes, a molecular weight distribution (M/M) in the range of from 1.8 to 4.0; reacting said ethylene/α-olefin interpolymer with an alkoxy amine derivative in an amount equal to or less than 900 parts derivative per million parts by weight of total ethylene/α-olefin interpolymer under conditions sufficient to increase the melt strength of the ethylene/α-olefin interpolymer is provided. 1. A polyethylene blend composition suitable for film applications comprising: [{'sup': '3', 'sub': 2', 'w', 'n, 'i. selecting an ethylene/α-olefin interpolymer (LLDPE) having a Comonomer Distribution Constant (CDC) from 75 to 300, a vinyl unsaturation of less than 150 vinyls per one million carbon atoms of the ethylene-based polymer composition; a zero shear viscosity ratio (ZSVR) from 4 to 50; a density from 0.925 to 0.950 g/cm, a melt index (I) from 0.1 to 2.5 g/10 minutes, a molecular weight distribution (M/M) from 1.8 to 4;'}, 'ii. reacting the ethylene/α-olefin interpolymer with an alkoxy amine derivative in an amount less than 900 parts derivative per million parts by weight of total ethylene/α-olefin interpolymer under conditions sufficient to increase the melt strength of the target polyethylene resin; and, 'a. from 10 to 100 percent by weight of an ethylene-based polymer made by the process which comprisesb. optionally from 5 to 90 percent by weight of a low density polyethylene composition.2. A film comprising a ...

MULTILAYER FILMS AND METHODS THEREOF

Embodiments disclosed herein include multilayer films having a cling layer and a release layer, wherein the cling layer comprises (i) an ethylene/alpha-olefm elastomer, and (ii) a polyethylene polymer selected from ultra-low density polyethylene, a very low density polyethylene, or combinations thereof, and the release layer comprises a polyethylene composition. 1. A multilayer film comprising a cling layer and a release layer , wherein:the cling layer comprises:{'sup': '3', 'sub': '2', '(i) an ethylene/alpha-olefin elastomer having a density in the range of 0.855 to 0.890 grams/cmand a melt index, I, in the range of 0.1 to 30 grams/10 minutes; and'}{'sup': '3', 'sub': '2', '(ii) a polyethylene polymer selected from ultra-low density polyethylene, a very low density polyethylene, or combinations thereof, wherein the polyethylene polymer has a density in the range 0.885 to 0.915 grams/cm, a melt index, I, in the range of 0.1 to 30 grams/10 minutes, and a purge fraction greater than 20 percent as determined by the Crystallization Elution Fractionation (CEF) test method; and'}the release layer comprises a polyethylene composition which comprises the reaction product of ethylene and, optionally, one or more alpha olefin comonomers, wherein the polyethylene composition is characterized by one or more of the following properties:{'sub': '2', '(a) a melt index, I, of from 0.1 to 2.0 g/10 min;'}(b) a density of from 0.910 to 0.930 g/cc;{'sub': 10', '2, '(c) a melt flow ratio, I/I, of from 6.0 to 7.6; and'}(d) a molecular weight distribution, (Mw/Mn) of from 2.5 to 4.0.2. The film of claim 1 , wherein the polyethylene composition of the release layer is formed in the presence of a catalyst composition comprising a multi-metallic procatalyst via solution polymerization.3. The film of claim 1 , wherein the release layer comprises from 20 wt. % to 80 wt. % of the polyethylene composition.4. The film of claim 1 , wherein the release layer further comprises a low density ...

LOW DENSITY ETHYLENE-BASED POLYMERS WITH BROAD MOLECULAR WEIGHT DISTRIBUTIONS AND LOW EXTRACTABLES

The invention provides an ethylene-based polymer comprising the following properties: a) a melt index (12)>2.0 dg/min; b) a Mw(abs) versus 12 relationship: Mw(abs)C+D(I2), where C=127.5 Pa, and D=−1.25 Pa/(dg/min). The invention also provides an ethylene-based polymer comprising the following properties: a) a melt index (12)>2.0 dg/min; b) a G′ versus 12 relationship: G′>C+D(I2), where C=127.5 Pa, and D=−1.25 Pa/(dg/min) c) a chloroform extractable (Clext) versus G′ relationship: Clext. Подробнее

LOW DENSITY ETHYLENE-BASED POLYMERS WITH EXTRACTS AT LOWER MOLECULAR WEIGHTS

The invention provides an ethylene-based polymer comprising the following properties: A) a “weight fraction (w) of molecular weight greater than 106 g/mole, based on the total weight of polymer, and as determined by GPC(abs),” that meets the following relationship: wG+H×log(I2), where G=2.00×10g/mole, and H=−1.20×10(g/mole)/log (dg/min).'}3. The ethylene-based polymer of claim 1 , wherein the polymer has an “MW(conv)of the highest 25% molecular weight fraction (fourth quadrant (M1)) in the MWD of the chloroform extractable” that is less than claim 1 , or equal to claim 1 , 8 claim 1 ,400 g/mole.4. The ethylene-based polymer of claim 1 , wherein the polymer has a hexane extractable that has a maximum MW(conv) less than claim 1 , or equal to claim 1 , 2 claim 1 ,300 g/mole.5. The ethylene-based polymer of claim 1 , wherein the polymer has an “MW(conv) ...

A Process for Increasing the Melt Strength of a Polyethylene Resin, a Masterbatch Composition and a Polymeric Composition

A process for increasing the melt strength of a polyethylene resin comprising a) selecting a polyethylene resin having i) a density, as determined according to ASTM D792, in the range of from 0.865 g/cmto 0.97 g/cm, and ii) a melt index, I, as determined according to ASTM D1238 (2.16 kg, 190° C.), in the range of from 0.01 g/10 min to 100 g/10 min; b) reacting from 10 ppm to 1000 ppm of at least one peroxide having a 1 hour half-life decomposition temperature from 160° C. to 250° C. with the polyethylene resin under conditions sufficient to increase the melt strength of the polyethylene resin is provided. Also provided are a masterbatch composition and a polymeric composition. 1. A method for increasing the melt strength of a polyethylene resin comprising: [{'sup': 3', '3, 'i) a density, as determined according to ASTM D792, in the range of from 0.865 g/cmto 0.97 g/cm, and'}, {'sub': '2', 'ii) a melt index, I, as determined according to ASTM D1238 (2.16 kg, 190° C.), in the range of from 0.01 g/10 min to 100 g/10 min;'}], 'a) selecting a polyethylene resin having'}b) reacting from 10 ppm to 1000 ppm of at least one peroxide having a 1 hour half-life decomposition temperature from 160° C. to 250° C. with the polyethylene resinwherein the peroxide is added to the polyethylene resin as a masterbatch comprising the peroxide along with a carrier resin, and wherein the carrier resin is selected from polyethylenes having a vinyl concentration from 0.07 to 0.7 per 1,000 carbons in the backbone of the polymer.2. (canceled)3. (canceled)4. The method according to claim 1 , wherein the ratio of Iof the polyethylene resin to the Iof the carrier resin is from 0.2 to 5 g/10 min.5. The method according to claim 1 , wherein the peroxide is present in amounts from 10 to 300 ppm.6. (canceled)7. A polymeric composition comprising:from 1 to 30 wt % of a masterbatch comprising a carrier resin and from 1000 ppm to 10000 ppm of at least one peroxide having a 1 hr. half-life decomposition ...

Multilayer films and methods thereof

Embodiments disclosed herein include multilayer films having a cling layer and a release layer, wherein the cling layer comprises (i) an ethylene/alpha-olefin elastomer, and (ii) a polyethylene polymer selected from ultra-low density polyethylene, a very low density polyethylene, or combinations thereof, and the release layer comprises a low density polyethylene (LDPE) having a density of from 0.915 to 0.930 g/cc, a melt index, 1 2 , of from 1.0 to 30.0 g/10 min, and a molecular weight distribution, (Mw/Mn), as measured by the conventional calibration of triple detector gel permeation chromatography, of from 3.0 to less than 7.0.

ETHYLENE-BASED POLYMERS WITH NEW DISTRIBUTIONS OF TERMINAL AND INTERNAL UNSATURATIONS

A high pressure, free radical polymerization process to form an ethylene-based polymer, the process comprising at least the following step: polymerizing a reaction mixture comprising ethylene, using a polymerization system comprising the following: (A) a reactor configuration comprising at least one reactor that comprises at least two reaction zones, a first reaction zone (reaction zone 1) and an ith reaction zone (where i≥2); wherein the ith reaction zone is the last reaction zone, and wherein i is the total number of reaction zones; (B) at least two ethylene-based feed streams, a first ethylene-based feed stream and an nth ethylene-based feed stream, wherein the first ethylene-based feed stream is sent to the first reaction zone, and the nth ethylene-based feed stream is the last ethylene based feed stream sent to the reactor configuration; wherein n≤i; and RZn/RZ1 does not equal 1.0, where RZ1=mole fraction of make-up ethylene in the first ethylene-based feed stream to the first reaction zone; where RZn=mole fraction of make-up ethylene in the last ethylene-based feed stream sent to the reactor configuration; (C) a control system to control the percentage of the make-up ethylene in the first ethylene-based feed stream, and the percentage of the make-up ethylene in the nth ethylene-based feed stream; and wherein at least one reaction zone receives a CTA make-up feed stream comprising an alpha-olefin, and wherein the alpha-olefin has a chain transfer activity constant (Cs) value ≤0.10, and wherein the chain transfer activity constant (Cs) is measured at 1360 atm, 130° C. 1. A high pressure , free radical polymerization process to form an ethylene-based polymer , the process comprising at least the following step:polymerizing a reaction mixture comprising ethylene, using a polymerization system comprising the following:(A) a reactor configuration comprising at least one reactor that comprises at least two reaction zones, a first reaction zone (reaction zone 1) and ...

FILMS HAVING DESIRABLE MECHANICAL PROPERTIES AND ARTICLES MADE THEREFROM

Disclosed herein is a film comprising a layer that comprises a polyethylene composition comprising the reaction product of ethylene and optionally one or more alpha-olefin comonomers, wherein said polyethylene composition is characterized by the following properties: a melt index, I, measured according to ASTM D1238 (2.16 kg, 190 C), of from 0.5 to 10 g/10 min; a density (measured according to ASTM D792) of less than 0.935 g/cm; a melt flow ratio, I/I, wherein Iis measured according to ASTM D1238 (10 kg, 190 C) of from 6.0 to 7.5; a molecular weight distribution (Mw/Mn) of from 2.8 to 3.9; and a vinyl unsaturation of greater than 0.12 vinyls per one thousand carbon atoms, and a low density polyethylene. 1. A film comprising a layer comprising: [{'sub': '2', 'a. a melt index, I, measured according to ASTM D 1238 (2.16 kg, 190° C.), of from 0.5 to 10 g/10 min;'}, {'sup': '3', 'b. a density measured according to ASTM D792 of less than 0.935 g/cm;'}, {'sub': 10', '2', '10, 'c. a melt flow ratio, I/I, wherein Iis measured according to ASTM D1238 (10 kg, 190° C.) of from 6.0 to 7.5;'}, {'sub': w', 'n, 'd. a molecular weight distribution (M/M) of from 2.8 to 3.9; and'}, 'e. a vinyl unsaturation of greater than 0.12 vinyls per one thousand carbon atoms; and, '(a) 50% or more by weight or more of a polyethylene composition comprising the reaction product of ethylene and optionally one or more alpha-olefin comonomers, wherein said polyethylene composition is characterized by the following properties(b) 50% or less by weight of a low density polyethylene.2. The film of claim 1 , wherein the low density polyethylene has a melt index claim 1 , 1 claim 1 , range of from 0.1-5 g/10 min.3. The film of claim 1 , wherein the film comprises from 5-30% by weight of the low density polyethylene.4. The film of claim 1 , wherein the film is a monolayer film.5. The film of claim 1 , wherein the film is a multilayer film.6. The film of claim 1 , wherein the polyethylene composition is ...

MODIFIED POLYETHYLENE COMPOSITIONS AND METHOD FOR MAKING THE SAME

A method for increasing the melt strength and/or low shear viscosity of a polyethylene resin, the method comprising a) providing a polyethylene composition comprising the reaction product of ethylene and optionally, one or more alpha-olefin comonomers, wherein the polyethylene composition is characterized by the following properties: a density ranging from 0.900 g/cmto 0.970 g/cm, a molecular weight distribution (Mw/Mn) ranging from 2.6 to 3.5, and from 0.10 to 0.27 vinyl groups per 1,000 total carbon atoms; b) providing a masterbatch composition comprising a free radical generator and a polyethylene resin, wherein the free radical generator has a half-life at 220 C of less than 200 seconds, and a decomposition energy higher than −250 kJ/mol, and wherein the polyethylene resin has a density ranging from 0.900 g/cmto 0.970 g/cm, melt index ranging from 0.01 g/10 min to 100 g/10 min; and c) reacting the polyethylene composition with the masterbatch composition to form a modified polyethylene composition. 1. A method for increasing the melt strength and/or low shear viscosity of a polyethylene resin , the method comprising:{'sup': 3', '3, 'a) providing a polyethylene composition comprising the reaction product of ethylene and optionally, one or more alpha-olefin comonomers, wherein the polyethylene composition is characterized by the following properties: a density ranging from 0.900 g/cmto 0.970 g/cm, a molecular weight distribution (Mw/Mn) ranging from 2.6 to 3.5, and from 0.10 to 0.27 vinyl groups per 1,000 total carbon atoms;'}{'sup': 3', '3, 'b) providing a masterbatch composition comprising a free radical generator and a polyethylene resin, wherein the free radical generator has a half-life at 220° C. of less than 200 seconds, and a decomposition energy higher than −250 kJ/mol, and wherein the polyethylene resin has a density ranging from 0.900 g/cmto 0.970 g/cm, melt index ranging from 0.01 g/10 min to 100 g/10 min; and'}c) reacting the polyethylene composition ...

LOW DENSITY ETHYLENE-BASED POLYMERS WITH HIGH MELT STRENGTH

The invention provides a composition comprising a first ethylene-based polymer, formed by a high pressure, free-radical polymerization process, and comprising the following properties: a) a Mw(abs) versus 12 relationship: Mw(abs) Подробнее

Mono- and multi-layer films and articles made therefrom

Mono- and multi-layer films comprising a polyethylene composition which comprises the reaction product of ethylene and optionally one or more alpha olefin comonomers in the presence of a catalyst composition comprising a multi-metallic procatalyst via a solution polymerization process in at least one reactor; wherein said polyethylene composition is characterized by one or more of the following properties: a melt index, I 2 , measured according to ASTM D 1238 (2.16 kg @ 190° C.), from 0.1 to 5 g/10 min; density, measured according to ASTM D-792, from 0.910 to 0.935 g/cc; melt flow ratio, I 10 /I 2 , wherein I 10 is measured according to ASTM D1238 (10 kg @ 190° C.), from 6 to 7.4; and molecular weight distribution, (M w /M n ) from 2.5 to 3.5 are provided. Also provided are articles made from the mono- and/or multi-layer films.

ETHYLENE-BASED POLYMERS AND PROCESSES TO MAKE THE SAME

The invention provides a composition comprising an ethylene-based polymer, wherein the ethylene-based polymer comprises the following properties: a) a Mw(abs)/Mw(conv)>2.60; and b) a CDFR(at Mw<10,000 g/mole)>0.145. 110-. (canceled)12. The composition of claim 11 , wherein the ethylene-based polymer has a CDF(at a MW≥1.2×10g/mol)≥0.05 claim 11 , wherein CDF(at a MW≥1.2×10g/mol) is a cumulative detector fraction from the viscosity detector computed by measuring an area fraction of a GPC viscosity chromatogram at greater than 1.2×10g/mol.13. The composition of claim 11 , wherein the ethylene-based polymer has an IV (intrinsic viscosity) (units=dl/g)≥1.00 dl/g claim 11 , intrinsic viscosity (Absolute by viscometer on-line by GPC) or IV (bulk).14. The composition of claim 11 , wherein the ethylene-based polymer has an Mw(abs) from 400 claim 11 ,000 g/mol to 600 claim 11 ,000 g/mol.15. The composition of claim 11 , wherein the ethylene-based polymer has a CDF(at MW≥750 claim 11 ,000 g/mol)≥0.45 claim 11 , wherein the CDFis computed by measuring the area fraction of a GPC LALLS detector chromatogram at greater than 750 claim 11 ,000 g/mol.16. The composition of claim 11 , wherein the ethylene-based polymer has a “peak melt strength at 190° C.” greater than “−65*(Iat 190° C.)+34 cN” and less than “−65*(Iat 190° C.)+43 cN” claim 11 , wherein Iis measured according to ASTM D1238 at 190° C. and a 2.16 kg load.17. The composition of claim 11 , wherein the ethylene-based polymer has Mw(conv)/Mn(conv) (cc-GPC Mw/Mn) from 9 to 13 claim 11 , wherein Mn(conv) is number average molecular weight determined by conventional GPC molecular weight calibration.18. The composition of claim 11 , wherein the ethylene-based polymer has a melt index (I) from 0.01 to 1.00 g/10 min when measured according to ASTM D1238 at 190° C. and a 2.16 kg load.19. The composition of claim 11 , wherein the ethylene-based polymer is a low density polyethylene (LDPE).20. An article comprising at least one ...

LOW DENSITY ETHYLENE-BASED POLYMERS WITH BROAD MOLECULAR WEIGHT DISTRIBUTIONS AND LOW EXTRACTABLES

The invention provides an ethylene-based polymer comprising the following properties: 115-. (cancled)16. An ethylene-based polymer comprising the following properties:a) a melt index (I2)≧2.0 dg/min;{'sup': 5', '3, 'b) a Mw(abs) versus I2 relationship: Mw(abs) Подробнее

ZIEGLER-NATTA CATALYSTS FOR THE PRODUCTION OF POLYETHYLENE

The heterogeneous procatalyst of this disclosure includes a titanium species; a hydrocarbon soluble transition metal compound having a structure M(OR); a chlorinating agent having a structure A(Cl)(R), and a magnesium chloride component. M of M(OR)is a non-reducing transition metal other than titanium, the non-reducing transition metal being in an oxidation state of +2 or +3. Each Ris independently (C-C)hydrocarbyl or —C(O)R, where Ris (C-C)hydrocarbyl. Subscript z of M(OR)is 2 or 3. Each Rand Rmay be optionally substituted with one or more than one halogen atoms, or one or more than one —Si(R), where each Ris (C-C)hydrocarbyl. A of A(Cl)(R)is aluminum or boron; Ris (C-C)hydrocarbyl; and x is 1, 2, or 3; and a magnesium chloride component. 1. A heterogeneous procatalyst comprising:a titanium species,{'sup': '1', 'sub': 'z', 'claim-text': M is a non-reducing transition metal other than titanium, the non-reducing transition metal being in an oxidation state of +2 or +3;', {'sup': 1', '11', '11, 'sub': 1', '30', '1', '30, 'each Ris independently (C-C)hydrocarbyl or —C(O)R, where Ris (C-C)hydrocarbyl; and'}, 'z is 2 or 3;', {'sup': 1', '11', 'S', 'S, 'sub': 3', '1', '30, 'wherein each Rand Rmay be optionally substituted with one or more than one halogen atoms, or one or more than one —Si(R), where each Ris (C-C)hydrocarbyl;'}], 'a hydrocarbon-soluble transition metal compound having a structure M(OR), where{'sub': x', '3-x, 'sup': '2', 'claim-text': A is aluminum or boron;', {'sup': '2', 'sub': 1', '30, 'Ris (C-C)hydrocarbyl; and'}, 'x is 1, 2, or 3; and, 'a chlorinating agent having a structure A(Cl)(R), wherea magnesium chloride component.2. The procatalyst according to claim 1 , wherein M is chosen from zinc claim 1 , copper claim 1 , cobalt claim 1 , manganese claim 1 , iron claim 1 , or chromium.3. The procatalyst according to claim 1 , wherein M(OR)is aliphatic or cycloaliphatic hydrocarbon-soluble.4. The procatalyst according to claim 1 , wherein the procatalyst ...

ETHYLENE-BASED POLYMERS AND PROCESSES TO MAKE THE SAME

The invention provides a composition comprising an ethylene-based polymer, formed from a high pressure, free-radical polymerization, and wherein the ethylene-based polymer has the following properties: a) a CO content from “greater than 0” to less than 10 weight percent CO (carbon monoxide), based on the weight of the polymer; and b) a melt index (I2) from 3 to 30 g/10 min. 1. A composition comprising an ethylene-based polymer , formed from a high pressure , free-radical polymerization , and wherein the ethylene-based polymer has the following properties:a) a CO content from “greater than 0” to less than 10 weight percent CO (carbon monoxide), based on the weight of the polymer; andb) a melt index (I2) from 3 to 30 g/10 min.2. The composition of claim 1 , wherein the ethylene-based polymer has a melting point claim 1 , Tm claim 1 , in ° C. claim 1 , that meets the following relationship:{'br': None, 'i': 'Tm', '(° C.)<601.4*(Density in g/cc)−447.8(° C.).'}3. The composition of claim 1 , wherein the ethylene-based polymer has a density from 0.910 to 0.950 g/cc.4. The composition of claim 1 , wherein the ethylene-based polymer has a melting point claim 1 , Tm claim 1 , in ° C. claim 1 , that meets the following relationship:{'br': None, 'i': 'Tm', '(° C.)<601.4*(Density in g/cc)−449(° C.).'}5. The composition of claim 1 , wherein the ethylene-based polymer passes fiber tear adhesion claim 1 , at a temperature of less than claim 1 , or equal to claim 1 , 320° C.6. The composition of claim 1 , wherein the ethylene-based polymer has a melting temperature claim 1 , Tm claim 1 , from 101° C. to 113° C.7. The composition of claim 1 , wherein the ethylene-based polymer has a melting temperature claim 1 , Tm claim 1 , from 103° C. to 113° C.8. The composition of claim 1 , wherein the ethylene-based polymer has a melting temperature claim 1 , Tm claim 1 , greater than 102° C.9. The composition of claim 1 , wherein the ethylene-based polymer has a CO content less than claim 1 , ...

Process to Visbreak Propylene-Based Polymers with C-C Initiators

The invention provides a process to prepare a second propylene-based polymer from a first propylene-based polymer, each propylene-based polymer having a melt flow rate (MFR; 2.16 kg/230° C.) with the MFR of the second propylene-based polymer N greater than the MFR of the first propylene-based polymer, the process comprising the step of contacting under visbreaking conditions the first propylene-based polymer with at least one carbon-carbon (C—C) free-radical initiator of Structure (I): (Structure (I)) wherein R, R, R, R, Rand Rare each, independently, a hydrocarbyl group or a substituted hydrocarbyl group, and wherein, optionally, two or more R groups (R, R, R, R, Rand R) form a ring structure. 1. A process to prepare a second propylene-based polymer from a first propylene-based polymer , each propylene-based polymer having a melt flow rate (MFR;2. The process of claim 1 , wherein R claim 1 , R claim 1 , R claim 1 , R claim 1 , Rand Rare each claim 1 , independently claim 1 , a Chydrocarbyl group or a substituted Chydrocarbyl group.3. The process of claim 1 , wherein the C—C free-radical initiator is present in an amount of at least 0.05 wt % based on the weight of the first propylene-based polymer.4. The process of claim 1 , wherein the C-C free-radical initiator has a decomposition temperature of greater than 130° C. based on DSC measurements.5. The process of claim 1 , comprising contacting the first propylene-based polymer with at least two C—C free-radical initiators.6. The process of wherein Rand Rare each a phenyl group.7. The process of claim 1 , wherein the at least one C—C free radical initiator is selected from the group consisting of the following: 2 claim 1 ,3-dimethyl-2 claim 1 ,3-diphenyl butane; 3 claim 1 ,4-dimethyl-3 claim 1 ,4-diphenyl hexane; and 3 claim 1 ,4-diethyl-3 claim 1 ,4-diphenyl hexane.8. The process of claim 1 , wherein the MFR of the second propylene-based polymer is at least 130% of the MFR of the first propylene based polymer.9. The ...

Low density ethylene-based polymers with high melt strength

The invention provides a composition comprising a first ethylene-based polymer, formed by a high pressure, free-radical polymerization process, and comprising the following properties: a) a Mw(abs) versus I2 relationship: Mw(abs)<A×[(I2) B ], where A=5.00×10 2 (g/mole)/(dg/min) B , and B=−0.40; and b) a MS versus I2 relationship: MS≧C×[(I2) D ], where C=13.5 cN/(dg/min) D , and D=−0.55.

PROCESS TO PRODUCE ENHANCED MELT STRENGTH ETHYLENE/ALPHA-OLEFIN COPOLYMERS AND ARTICLES THEREOF

An ethylene/α-olefin copolymer comprising units derived from ethylene; and units derived from at least one α-olefin; wherein the ethylene/α-olefin copolymer has a density in the range of from 0.90 to 0.94 g/cc; a melt index (I) in the range of from 0.05 to 50 dg/min; an Mw/Mn of from 3 to 5; and from 300 to 500 vinyl unsaturations per 1,000,000 carbon atoms in the ethylene/α-olefin copolymer is provided. Also provided is a process for producing an ethylene/α-olefin copolymer comprising: (1) polymerizing ethylene and one or more α-olefins in a polymerization reactor; (2) thereby producing an enhanced melt strength ethylene/α-olefin copolymer having from 300 to 500 vinyl unsaturation units per 1,000,000 carbon atoms, a density in the range of from 0.90 to 0.94 g/cc; a melt index (I) in the range of from 0.05 to 50 dg/min; and a Mw/Mn of from 3 to 5. 118.-. (canceled)19. An ethylene/α-olefin copolymer comprising:units derived from ethylene; andunits derived from at least one α-olefin;{'sub': '2', 'wherein the ethylene/α-olefin copolymer has a density in the range of from 0.90 to 0.94 g/cc; a melt index (I) in the range of from 0.05 to 50 dg/min; an Mw/Mn of from 3 to 5; and'}from 300 to 500 vinyl unsaturations per 1,000,000 carbon atoms in the ethylene/α-olefin copolymer; and a melt strength of at least 3.0 cN measured via capillary rheometer at a standard test temperature of 190° C.20. A process for producing an ethylene/α-olefin copolymer comprising the steps of:(1) polymerizing ethylene and one or more α-olefins in a polymerization reactor wherein the ethylene/α-olefin copolymer is produced using a polymerization step occurring at a temperature of at least 205° C. in the presence of a multi-constituent catalyst system comprising a Ziegler-Natta catalyst composition including a magnesium and titanium containing precatalyst and a cocatalyst, wherein said precatalyst has a Ti:Mg ratio between 1.0:40 to 5.0:40 and in the presence of hydrogen from 0.01 to 0.04 mole ...

PROCATALYST COMPOSITIONS USEFUL FOR LOW COMONOMER INCORPORATION AND PROCESS FOR PREPARING THE SAME

The present disclosure relates to novel procatalyst compositions including a titanium moiety, a magnesium halide support, a hydrocarbon solution in which the magnesium halide support is formed, and an electron donor modifier having the formula (I). The present disclosure further relates to a one-pot process for preparing the novel procatalyst compositions, as well as use of the novel procatalyst compositions in solution processes for polymerization of ethylene and at least one additional polymerizable monomer to form a polymer composition. 2. The process of claim 1 , wherein Xand Xare alkyl groups claim 1 , wherein each of R claim 1 , R claim 1 , R claim 1 , and Ris hydrogen claim 1 , and wherein each of R claim 1 , R claim 1 , R claim 1 , and Ris a branched or cyclic hydrocarbyl.3. The process of claim 1 , wherein the X—O group claim 1 , the X—O group claim 1 , or both groups are replaced with a functional group comprising at least one heteroatom selected from N claim 1 , O claim 1 , P claim 1 , and S.4. The process of claim 1 , wherein step (c) includes addition of the electron donor modifier to the supported titanium procatalyst at a donor/titanium ratio of 0.01 to 100.5. The process of claim 4 , wherein step (c) includes addition of the electron donor modifier to the supported titanium procatalyst at a donor/titanium ratio of 0.1 to 10 and aging for at least 1 minute.6. The process of claim 1 , wherein a metallic halide is used in steps (a) claim 1 , (b) claim 1 , and/or (c).7. The process of claim 6 , wherein the metallic halide is an aluminum halide.8. The process of claim 1 , wherein the hydrocarbon solvent of step (a) is also present in steps (b) and (c).10. The procatalyst composition of claim 9 , wherein Xand Xare alkyl groups claim 9 , wherein each of R claim 9 , R claim 9 , R claim 9 , and Ris hydrogen claim 9 , and wherein each of R claim 9 , R claim 9 , R claim 9 , and Ris a branched or cyclic hydrocarbyl.11. The procatalyst composition of claim 9 , ...

ETHYLENE/CO INTERPOLYMERS AND PROCESSES TO MAKE THE SAME

A composition comprising an ethylene/CO interpolymer, formed from a high pressure, free-radical polymerization, and wherein the ethylene/CO interpolymer has the following properties: a) a CO content from “greater than 0” weight percent to less than, or equal to, 10 weight percent CO (carbon monoxide), based on the weight of the interpolymer; and b) a melting point, Tm, in ° C. that meets the following relationship: Tm (° C.)≤601.4*(Density in g/cc)−452.5(° C.). 1. A composition comprising an ethylene/CO interpolymer , formed from a high pressure , free-radical polymerization , and wherein the ethylene/CO interpolymer has the following properties:a) a CO content from “greater than 0” weight percent to less than, or equal to, 10 weight percent CO (carbon monoxide), based on the weight of the interpolymer; and {'br': None, 'i': 'Tm', '(° C.)≤601.4*(Density in g/cc)−452.5(° C.).'}, 'b) a melting point, Tm, in ° C. that meets the following relationship2. The composition of claim 1 , wherein the ethylene/CO interpolymer meets the following relationship: MS (cN) ≥2.0 (wt % CO)+2.0.3. The composition of claim 1 , wherein the ethylene/CO interpolymer has a melt index (I2) from 0.1 to 100 g/10 min.4. The composition of claim 1 , wherein the ethylene/CO interpolymer has a Tm (° C.) ≥601.4*(Density in g/cc)−460.0(° C.).5. The composition of claim 1 , wherein the ethylene/CO interpolymer has a melting temperature claim 1 , Tm claim 1 , from 105.5° C. to 110.5° C.6. The composition of claim 1 , wherein the ethylene/CO interpolymer has a density from 0.910 to 0.990 g/cc.7. The composition of claim 1 , wherein the ethylene/CO interpolymer has an amyl group level greater than claim 1 , or equal to claim 1 , 0.5 amyl group per 1000 carbon atoms claim 1 , as determined by 13C NMR.8. The composition of claim 1 , wherein ethylene/CO interpolymer is an ethylene/CO copolymer.9. The composition of claim 1 , wherein the composition further comprises a second ethylene-based polymer.10. The ...

Tubular Low Density Ethylene-Based Polymers with Improved Balance of Extractables and Melt Elasticity

The invention provides an ethylene-based polymer comprising the following properties: 113-. (canceled)14. An ethylene-based polymer comprising the following properties:{'sup': '6', 'sub': '2', 'a) weight fraction, as a percentage (w) of molecular weight above 5*10g/mol, w>A−B*I2, where A=0.4 wt %, and B is 0.02 wt %/(dg/min), and wD−E*log(I2), where D=162 Pa and E=52 Pa/log(dg/min),{'sub': 2', '2, 'sup': 5', '5, 'c) an Mw(abs) versus melt index (I) relationship: Mw(abs)≦A+B*log(I), where A=3.50*10grams per mole (g/mole), and B=−1.20*10(g/mole)/log(dg/min); and'}{'sub': '2', 'd) n-hexane extractables Подробнее

FUNCTIONALIZED ETHYLENE/α-OLEFIN INTERPOLYMER COMPOSITIONS

The invention relates to functionalized interpolymers derived from base olefin interpolymers, which are prepared by polymerizing one or more monomers or mixtures of monomers, such as ethylene and one or more comonomers, to form an interpolymer products having unique physical properties. The functionalized olefin interpolymers contain two or more differing regions or segments (blocks), resulting in unique processing and physical properties.

Functionalized ethylene/alpha-olefin interpolymer compositions

The invention relates to functionalized interpolymers derived from base olefin interpolymers, which are prepared by polymerizing one or more monomers or mixtures of monomers, such as ethylene and one or more comonomers, to form an interpolymer products having unique physical properties. The functionalized olefin interpolymers contain two or more differing regions or segments (blocks), resulting in unique processing and physical properties.

Polyolefin composition with molecular weight maximum occuring in that part of the composition that has the highest comonomer content

This invention relates to a polyolefin copolymer composition produced with a catalyst having a metallocene complex in a single reactor in a process for the polymerization of an α-olefin monomer with one or more olefin comonomers, and a molecular weight maximum which occurs in that 50 percent by weight of the composition which has the highest weight percent comonomer content. Preferably, the composition has a comonomer partitioning factor Cpf which is equal to or greater than 1.10 or molecular weight partitioning factor Mpf which is equal to or greater than 1.15. Preferred composition also have at least 0.01 long chain branches per 1000 carbon atoms along the polymer backbone. These compositions with reverse molecular engineering have superior properties and are easily processable due to the simultaneous presence of the association of high molecular weight with high comonomer content and of long chain branching.

Polyolefin composition with molecular weight maximum occuring in that part of the composition that has the highest comonomer content

This invention relates to a polyolefin copolymer composition produced with a catalyst having a metallocene complex in a single reactor in a process for the polymerization of an &agr;olefin monomer with one or more olefin comonomers, and a molecular weight maximum which occurs in that 50 percent by weight of the composition which has the highest weight percent comonomer content. Preferably, the composition has a comonomer partitioning factor C pf which is equal to or greater than 1.10 or molecular weight partitioning factor M pf which is equal to or greater than 1.15. Preferred composition also have at least 0.01 long chain branches per 1000 carbon atoms along the polymer backbone. These compositions with reverse molecular engineering have superior properties and are easily processable due to the simultaneous presence of the association of high molecular weight with high comonomer content and of long chain branching.

Mono- and multi-layer films and articles made therefrom

Mono- and multi-layer films comprising a polyethylene composition which comprises the reaction product of ethylene and optionally one or more alpha olefin comonomers in the presence of a catalyst composition comprising a multi-metallic procatalyst via a solution polymerization process in at least one reactor; wherein said polyethylene composition is characterized by one or more of the following properties: a melt index, I2, measured according to ASTM D 1238 (2.16 kg@190° C.), from 0.1 to 5 g/10 min; density, measured according to ASTM D-792, from 0.910 to 0.935 g/cc; melt flow ratio, I10/I2, wherein I10 is measured according to ASTM D1238 (10 kg@190° C.), from 6 to 7.4; and molecular weight distribution, (Mw/Mn) from 2.5 to 3.5 are provided. Also provided are articles made from the mono- and/or multi-layer films.

Mono- and multi-layer films and articles made therefrom

Mono- and multi-layer films comprising a polyethylene composition which comprises the reaction product of ethylene and optionally one or more alpha olefin comonomers in the presence of a catalyst composition comprising a multi-metallic procatalyst via a solution polymerization process in at least one reactor; wherein said polyethylene composition is characterized by one or more of the following properties: a melt index, I 2 , measured according to ASTM D 1238 (2.16 kg @ 190° C.), from 0.1 to 5 g/10 min; density, measured according to ASTM D-792, from 0.910 to 0.935 g/cc; melt flow ratio, I 10 /I 2 , wherein I 10 is measured according to ASTM D1238 (10 kg @ 190° C.), from 6 to 7.4; and molecular weight distribution, (M w /M n ) from 2.5 to 3.5 are provided. Also provided are articles made from the mono- and/or multi-layer films.

Polypropylene-based adhesive compounds

A copolymer comprising units derived from propylene and at least one comonomer selected from the group consisting of ethylene and C 4-20 α-olefins, the copolymer having (i) a content of units derived from propylene of greater than about 50 mole percent, (ii) a Brookfield viscosity at 190C from about 50 to about 100,000 cP, (iii) an MWD from about 1.5 to about 6, and (iv) containing less than about 50 ppm metal.

Interpolymers suitable for use in hot melt adhesives and processes to prepare the same

The present invention relates to an ethylene/α-olefin interpolymer product comprising at least one α-olefin interpolymerized with ethylene and, characterized in at least one aspect, as having improved properties when utilized in a hot melt adhesive formulation. The invention also relates to a process for manufacturing the interpolymer product wherein the process comprises employing two or more single site catalyst systems in at least one reaction environment (or reactor) and wherein the at least two catalyst systems have (a) different comonomer incorporation capabilities or reactivities and/or (b) different termination kinetics, both when measured under the same polymerization conditions. The interpolymer products are useful, for example, in applications such as hot melt adhesives, and also for impact, bitumen and asphalt modification, adhesives, dispersions or latexes and fabricated articles such as, but not limited to, foams, films, sheet, moldings, thermoforms, profiles and fibers.

Interpolymers suitable for use in hot melt adhesives and processes to prepare the same

The present invention relates to an ethylene/α-olefin interpolymer product comprising at least one α-olefin interpolymerized with ethylene and, characterized in at least one aspect, as having improved properties when utilized in a hot melt adhesive formulation. The invention also relates to a process for manufacturing the interpolymer product wherein the process comprises employing two or more single site catalyst systems in at least one reaction environment (or reactor) and wherein the at least two catalyst systems have (a) different comonomer incorporation capabilities or reactivities and/or (b) different termination kinetics, both when measured under the same polymerization conditions. The interpolymer products are useful, for example, in applications such as hot melt adhesives, and also for impact, bitumen and asphalt modification, adhesives, dispersions or latexes and fabricated articles such as, but not limited to, foams, films, sheet, moldings, thermoforms, profiles and fibers.

Functionalized propylene interpolymers, compositions and articles prepared therefrom, and methods for making the same

A composition comprising at least one functionalized propylene interpolymer, and wherein the at least one functionalized propylene interpolymer is formed from a propylene interpolymer and at least one unsaturated compound, containing at least one heteroatom, and wherein the propylene interpolymer has a melt viscosity less than 70,000 cP (190°C) and a molecular weight distribution (Mw/Mn) from 1 to 5.

Silane-Grafted Olefin Polymers, Compositions and Articles Prepared Therefrom, and Methods For Making The same

The present invention relates to a composition comprising at least one silane-grafted propylene/α-olefin polymer, having a melt viscosity less than 50,000 cP at 177°C (350°F), and formed from a propylene/α-olefin polymer having a molecular weight distribution (Mw/Mn) from 1.5 to 3.5.

Silane-grafted olefin polymers, compositions and articles prepared therefrom, and methods for making the same

The present invention relates to a composition comprising a blend, comprising at least one silane-grafted ethylene/α-olefin polymer and at least one silane-grafted propylene/α-olefin polymer, and wherein the at least one silane-grafted ethylene/a-olefin has a melt viscosity less than 50,000 cP at 177°C (350°F).