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/1000C, as determined by 1H NMR, and x=mol% polymerized alpha-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 ...

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.

Self limiting catalyst composition for ethylene polymerization

A process for polymerizing ethylene to produce an ethylene-based polymer including contacting ethylene with a Ziegler-Natta procatalyst, an alkylaluminum cocatalyst and a self limiting agent selected from the group of aliphatic, cycloaliphatic, substituted cycloaliphatic or aromatic esters, anhydrides and amides such that the self limiting agent reduces polymerization rates to no greater than 40% of the polymerization rate in the absence of the self limiting agent at temperatures equal to or greater than 120° C. is provided.

Processes to Control Fouling and Improve Compositions

Improved reaction processes comprise reacting a mixture to form a product comprising a metal alkyl, metal oxide, or mixture thereof and then passing said product to a post-reactor heat exchanger. The improvement comprises one or more of the following: 14-. (canceled)5. A reaction process comprising: (a) an ethylene/α-olefin multiblock interpolymer comprising at least 50 mole percent ethylene which is characterized before any crosslinking by one or more of the following characteristics:', '(1) an average block index greater than zero and up to about 1.0 and a molecular weight distribution, Mw/Mn, greater than about 1.3; or', '(2) at least one molecular fraction which elutes between 40° C. and 130° C. when fractionated using TREF, characterized in that the fraction has a block index of at least 0.5 and up to about 1; or', {'br': None, 'i': T', 'd', 'd, 'sub': 'm', 'sup': '2', '>−6553.3+13735()−7051.7(); or'}, '(3) an 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, [{'br': None, 'i': T>−', 'H', 'H, 'Δ0.1299(Δ)+62.81 for Δgreater than zero and up to 130 J/g,'}, {'br': None, 'i': T≧', 'H, 'Δ48° C. for Δgreater than 130 J/g,'}], '(4) an Mw/Mn from about 1.7 to about 3.5, and a heat of fusion, ΔH in J/g, and a delta quantity, ΔT, in degrees Celsius defined as the temperature difference between the tallest DSC peak and the tallest CRYSTAF peak, wherein the numerical values of ΔT and ΔH have the following relationships, 'wherein the CRYSTAF peak is determined using at least 5 percent of the cumulative polymer, and if less than 5 percent of the polymer has an identifiable CRYSTAF peak, then the CRYSTAF temperature is 30° C.; or', {'br': None, 'i': Re>', 'd, '1481−1629(); or'}, '(5) an elastic recovery, Re, in percent at 300 percent strain and 1 cycle measured with a compression-molded film of the ethylene/α-olefin ...

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.

Processes to control fouling and improve compositions

Improved reaction processes comprise reacting a mixture to form a product comprising a metal alkyl, metal oxide, or mixture thereof and then passing said product to a post-reactor heat exchanger. The improvement comprises one or more of the following: (1) reacting said metal alkyl compound with an acid to produce a soluble metal ester; or (2) adding an ionic surfactant; or (3) adding a mixture comprising an antioxidant to the product under conditions sufficient to avoid formation of significant amounts of insoluble metal or metal compounds derived from said metal alkyl compound; or (4) purging said post-reactor heat exchanger with an inert gas under conditions to remove metal oxide from the post-reactor heat exchanger.

Ethylene-based polymers with improved melt strength and processes for the same

The invention provides an ethylene-based polymer formed from at least the following: ethylene and a monomeric chain transfer agent (monomeric CTA) selected from Structure 1: wherein L is selected from a saturated hydrocarbon, a substituted saturated hydrocarbon, an unsaturated hydrocarbon, or a substituted unsaturated hydrocarbon; R1 is selected from hydrogen, a saturated hydrocarbon, a substituted saturated hydrocarbon, an unsaturated hydrocarbon, or a substituted unsaturated hydrocarbon; R2 is selected from hydrogen, a saturated hydrocarbon or a substituted saturated hydrocarbon; R3 is selected from hydrogen, a saturated hydrocarbon or a substituted saturated hydrocarbon; and R4 is selected from a saturated hydrocarbon, a substituted saturated hydrocarbon, an unsaturated hydrocarbon, or a substituted unsaturated hydrocarbon.

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.

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 R 1 , R 2 ,R 3 , R 4 and R 5 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).

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).

ETHYLENE-BASED POLYMERS WITH IMPROVED MELT STRENGTH AND PROCESSES FOR THE SAME

The invention provides an ethylene-based polymer formed from at least the following: ethylene and a monomeric chain transfer agent (monomeric CTA) selected from Structure 1: wherein L is selected from a saturated hydrocarbon, a substituted saturated hydrocarbon, an unsaturated hydrocarbon, or a substituted unsaturated hydrocarbon; R1 is selected from hydrogen, a saturated hydrocarbon, a substituted saturated hydrocarbon, an unsaturated hydrocarbon, or a substituted unsaturated hydrocarbon; R2 is selected from hydrogen, a saturated hydrocarbon or a substituted saturated hydrocarbon; R3 is selected from hydrogen, a saturated hydrocarbon or a substituted saturated hydrocarbon; and R4 is selected from a saturated hydrocarbon, a substituted saturated hydrocarbon, an unsaturated hydrocarbon, or a substituted unsaturated hydrocarbon.

SELF LIMITING CATALYST COMPOSITION FOR ETHYLENE POLYMERIZATION

A process for polymerizing ethylene to produce an ethylene-based polymer including contacting ethylene with a Ziegler-Natta procatalyst, an alkylaluminum cocatalyst and a self limiting agent selected from the group of aliphatic, cycloaliphatic, substituted cycloaliphatic or aromatic esters, anhydrides and amides such that the self limiting agent reduces polymerization rates to no greater than 40% of the polymerization rate in the absence of the self limiting agent at temperatures equal to or greater than 120° C. is provided. 1. A process for polymerizing ethylene comprising: (i) contacting , in a first reactor , ethylene; optionally at least one comonomer; with a catalyst composition comprising one or more Group 3-10 transition metal containing Ziegler-Natta procatalyst compounds , one or more alkylaluminum cocatalysts; and one or more self limiting agents , wherein the one or more self limiting agents are selected from the group of aliphatic , cycloaliphatic , substituted cycloaliphatic or aromatic anhydrides and amides and the one or more self limiting agents are provided at a total self limiting agent to transition metal component molar ratio from 0.25:1 to 10:1 such that the self limiting agents reduce polymerization rates to no greater than 40% of the polymerization rate in the absence of the one or more self limiting agents at temperatures equal to or greater than 120° C.; and (ii) polymerizing at a first reactor temperature of greater than 75° C. and less than 112° C. to form an ethylene-based polymer.2. The process of wherein the first reactor is a gas phase or slurry claim 1 , or parallel polymerization reactor of gas or slurry phase.3. The process of wherein the first reactor does not exhibit sheeting.4. The process of wherein the one or more self limiting agents is 4-methylcyclohexane-1 claim 3 ,2-diecarboxlic anhydride and is present in the first reactor at a molar ratio to transition metal component of about 0.5:1 to 1.9:1.5. The process of wherein the ...

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 ...

ZIEGLER-NATTA CATALYST DEACTIVATION AND NEUTRALIZATION

A solution polymerization process for producing ethylene-based polymer includes introducing ethylene monomer, hydrocarbon solvent, and Ziegler-Natta catalyst into an entrance of a solution polymerization reactor. An ethylene-based polymer is produced by solution polymerizing the ethylene monomer in hydrocarbon solvent. Subsequently, a catalyst deactivator is introduced into the exit of the solution polymerization reactor, thereby producing hydrochloric acid byproduct. The catalyst deactivator includes long chain carboxylate and at least one cation selected from Groups 1, 2, and 12 of the IUPAC periodic table, with the exception of calcium. The catalyst deactivator reduces the effectiveness of the Ziegler-Natta catalyst and neutralizes the hydrochloric acid by forming a chloride salt other than calcium chloride. 1. A solution polymerization process for producing ethylene-based polymer comprising:introducing ethylene monomer, hydrocarbon solvent, and Ziegler-Natta catalyst into a solution polymerization reactor;producing the ethylene-based polymer by solution polymerizing the ethylene monomer and the hydrocarbon solvent in the solution polymerization reactor using the Ziegler-Natta catalyst;introducing catalyst deactivator to the solution polymerization reactor, thereby producing hydrochloric acid byproduct, 'long chain carboxylate and at least one cation selected from Groups 1, 2, and 12 of the IUPAC periodic table, with an exception of calcium, and', 'wherein the catalyst deactivator compriseswherein the catalyst deactivator reduces effectiveness of the Ziegler-Natta catalyst and neutralizes the hydrochloric acid by forming a chloride salt other than calcium chloride.2. The method of claim 1 , wherein additional olefin comonomer is introduced into the solution polymerization reactor with at least one of the ethylene monomer claim 1 , hydrocarbon solvent claim 1 , and Ziegler-Natta catalyst.3. The method of claim 2 , wherein the additional olefin comonomer is ...

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 ...

BIS-BIPHENYLPHENOXY CATALYSTS FOR POLYMERIZATION OF LOW MOLECULAR WEIGHT ETHYLENE-BASED POLYMERS

The invention provides a process, and transition metal complex, to form an ethylene-based polymer, said process comprising polymerizing ethylene, and optionally at least one comonomer, in the presence of at least one molecular transition metal complex selected from Formula 1, as described herein. 2. The process of wherein at least one of Ror Ris a halogen.3. The process of claim 1 , wherein Rx or Ry is hydrogen claim 1 , and the other is a substituted or unsubstituted (C1-C40) hydrocarbyl.4. The process of claim 3 , wherein Rx or Ry is hydrogen claim 3 , and the other is an unsubstituted (C1-C20) hydrocarbyl.5. The process of claim 1 , wherein each Z is —O— (oxygen atom).6. The process of claim 1 , wherein n is 2 claim 1 , and each X is independently an alkyl.7. The process of claim 1 , wherein Rand Rare each independently selected from the following: 1 claim 1 ,2 claim 1 ,3 claim 1 ,4-tetrahydronaphthyl; anthracenyl; 1 claim 1 ,2 claim 1 ,3 claim 1 ,4-tetrahydroanthracenyl; 1 claim 1 ,2 claim 1 ,3 claim 1 ,4 claim 1 ,5 claim 1 ,6 claim 1 ,7 claim 1 ,8-octahydroanthracenyl; phenanthrenyl; 1 claim 1 ,2 claim 1 ,3 claim 1 ,4 claim 1 ,5 claim 1 ,6 claim 1 ,7 claim 1 ,8-octahydrophenanthrenyl; 2 claim 1 ,6-dimethylphenyl; 2 claim 1 ,6-diisopropylphenyl; 3 claim 1 ,5-di(tertiary-butyl)phenyl; 3 claim 1 ,5-diphenylphenyl; 1-naphthyl; 2-methyl-1-naphthyl; 2-naphthyl; 1 claim 1 ,2 claim 1 ,3 claim 1 ,4-tetra-hydronaphth-5-yl; 1 claim 1 ,2 claim 1 ,3 claim 1 ,4-tetrahydronaphth-6-yl; anthracen-9-yl; 1 claim 1 ,2 claim 1 ,3 claim 1 ,4-tetrahydro-anthracen-9-yl; 1 claim 1 ,2 claim 1 ,3 claim 1 ,4 claim 1 ,5 claim 1 ,6 claim 1 ,7 claim 1 ,8-octahydroanthracen-9-yl; 1 claim 1 ,2 claim 1 ,3 claim 1 ,4 claim 1 ,5 claim 1 ,6 claim 1 ,7 claim 1 ,8-octahydrophenanthren-9-yl; indolyl; indolinyl; quinolinyl; 1 claim 1 ,2 claim 1 ,3 claim 1 ,4-tetrahydroquinolinyl; isoquinolinyl; 1 claim 1 ,2 claim 1 ,3 claim 1 ,4-tetrahydro-isoquinolinyl; carbazolyl; 1 claim 1 ,2 claim 1 ,3 claim 1 ,4- ...

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 ...

PROCESS TO FORM ETHYLENE/ALPHA-OLEFIN INTERPOLYMERS

The invention provides a process to form an ethylene/α-olefin interpolymer, comprising at least the following steps A) through C): A) polymerizing, in at least one reactor, at least one reaction mixture comprising ethylene and the α-olefin, in a solution polymerization, and in the presence of at least the following components I), II) and III): I) at least one compound of Structure 1, as described herein; II) at least one co-catalyst, as described herein; III) at least one compound of Structure 2, as described herein; B) separating the final polymer solution into at least a polymer-rich solution and a polymer-free solution; and optionally, at least a portion of the polymer-free solution is recycled back to the reactor; C) maintaining the level of the at least one compound of Structure 2 in the at least one reactor, from 100 ppm to 10,000 ppm, as described herein. 2. The process of claim 1 , wherein the process further comprises monitoring the level of the at least one compound of Structure 2 in the polymer-free solution.3. The process of claim 1 , wherein claim 1 , for step A) claim 1 , the at least one compound of Structure 2 claim 1 , is added to the at least one reactor claim 1 , in an amount from 100 ppm to 10 claim 1 ,000 ppm claim 1 , based on the total content weight of the reactor.4. The process of claim 1 , wherein the at least one compound of Structure 2 is formed in-situ claim 1 , in the reactor claim 1 , from isomerization of a diene.5. The process of claim 1 , wherein claim 1 , for step A) claim 1 , the at least one co-catalyst is added to the at least one reactor claim 1 , in an amount from 0.1 to 100 ppm claim 1 , based on the total content weight of the reactor.6. The process of claim 1 , wherein claim 1 , for step C) claim 1 , at least one base compound is added to the final polymer solution claim 1 , in an amount from 10 ppm to 1000 ppm claim 1 , based on the total content weight of the reactor.7. The process of claim 1 , wherein claim 1 , for step ...

Improved Process to Make Tubular Ethylene Based Polymers with High Melt Strength

A process to form an ethylene-based polymer comprises polymerizing a reaction mixture comprising ethylene, at least one monomeric chain transfer agent, and at least one chain transfer agent system comprising at least one chain transfer agent (CTA) in the presence of at least one free-radical initiator and in a reactor configuration comprising at least two reaction zones, reaction zone 1 and reaction zone i (i≥2), wherein the reaction zone i is downstream from reaction zone 1. The ratio of “the activity of the CTA system of the feed to the first reaction zone” to the “activity of the CTA system of the cumulative feed to the reaction zone i,” (Z/Z), is less than or equal to (0.8−0.2*log(Cs)), wherein Cs is from 0.0001 to 10. 1. A process to form an ethylene-based polymer , said process comprising polymerizing a reaction mixture comprising ethylene , at least one monomeric chain transfer agent , and at least one chain transfer agent system comprising at least one chain transfer agent , and wherein the polymerization takes place in the presence of at least one free-radical initiator; and wherein the polymerization takes place in a reactor configuration comprising at least two reaction zones , reaction zone 1 and reaction zone i (i≥2) , wherein reaction zone i is downstream from reaction zone 1; and wherein the process comprises at least one of the following:{'sub': 1', 'i, '(A) a ratio of “the activity of the CTA system of the feed to the first reaction zone” to the “activity of the CTA system of the cumulative feed to the reaction zone i,” (Z/Z), is less than or equal to (0.8−0.2*log(Cs)), wherein Cs is from 0.0001 to 10; or'}(B) the chain transfer agent system has a Cs value at 130° C. and 1360 atmosphere of less than, or equal to 0.020; or{'sub': 1', 'i, '(C) the ratio of CTA activity in the feeds to the first reaction zone and to reaction zone i (Z/Z) is less than, or equal to, 0.90.'}2. (canceled)3. The process of claim 1 , wherein the reaction mixture further ...

Improved Process to Make Tubular Ethylene Based Polymers with High G' and Broad MWD

A process to form an ethylene-based polymer comprises polymerizing a reaction mixture comprising ethylene, at least one symmetrical polyene and at least one chain transfer agent system comprising at least one chain transfer agent (CTA) in the presence of at least one free-radical initiator and in a reactor configuration comprising at least two reaction zones, reaction zone 1 and reaction zone i (i≥2), wherein reaction zone i is downstream from reaction zone . The ratio of “the activity of the CTA system of the feed to the first reaction zone” to the “activity of the CTA system of the cumulative feed to the reaction zone i,” (Z/Z), is less than or equal to (0.8-0.2*log(Cs)), wherein Cs is from 0.0001 to 10. 111. A process to form an ethylene-based polymer , said process comprising polymerizing a reaction mixture comprising ethylene , at least one symmetrical polyene and at least one chain transfer agent system comprising at least one chain transfer agent (CTA); and wherein the polymerization takes place in the presence of at least one free-radical initiator; and wherein the polymerization takes place in a reactor configuration comprising at least two reaction zones , reaction zone and reaction zone i (i≥2) , wherein reaction zone i is downstream from reaction zone ; and wherein the process comprises at least one of the following:{'sub': 1', 'i, '(A) a ratio of “the activity of the CTA system of the feed to the first reaction zone” to the “activity of the CTA system of the cumulative feed to the reaction zone i,” (Z/Z), is less than or equal to (0.8-0.2*log(Cs)), wherein Cs is from 0.0001 to 10; or'}(B) the chain transfer agent system has a Cs value at 130° C. and 1360 atmosphere of ≤0.020; or{'sub': 1', 'i, '(C) the ratio of activity of the CTA system of the feed to the first reaction zone to the activity of the CTA system of the cumulative feed to the reaction zone i, (Z/Z), is less than, or equal to, 0.90.'}2. canceled32. The process of claim 1 , wherein the ...

DISTRIBUTOR FOR POLYMER SOLUTION DEVOLATILIZATION, METHODS OF MANUFACTURE THEREOF AND AN ARTICLE COMPRISING THE SAME

Disclosed herein is a distributor comprising a first conduit; where the first conduit has an inlet port for charging a heating fluid into the distributor; a second conduit; where the first conduit lies inside the second conduit to define a first annular space therebetween; where the second conduit has an exit port for removing the heating fluid from the distributor; a plurality of plate stacks disposed around the second conduit to define a narrowing second annular space from top to bottom of the distributor; where each successive plate stack has smaller inner diameter than the plate stack located above it; where each plate stack comprises a plurality of plates; where the plurality of plates further define a plurality of conduits, each conduit having a varying width over its length and extending radially outwards from the central passage. 1. A distributor comprising:a first conduit; where the first conduit has an inlet port for charging a heating fluid into the distributor;a second conduit; where the first conduit lies inside the second conduit to define a first annular space therebetween; where the second conduit has an exit port for removing the heating fluid from the distributor;a plurality of plate stacks disposed around the second conduit to define a narrowing second annular space from top to bottom of the distributor;where each plate stack comprises a plurality of plates; where the plurality of plates further define a plurality of conduits, each conduit having a varying width over its length and extending radially outwards from the central passage, where the plurality of conduits is in fluid communication with the second annular space; and where the distributor is operated at a pressure and a temperature effective to promote separation of a solvent from a polymer solution during transport of the polymer solution through the distributor.2. The distributor of claim 1 , where the conduit in the plate stack has an increasing cross-sectional area as a radial ...

METHOD AND SYSTEM FOR POLYMER PRODUCTION

Disclosed herein is a system for solution polymerization comprising a reactor system that is operative to receive a monomer and to react the monomer to form a polymer; a plurality of devolatilization vessels located downstream of the reactor system, where each devolatilization vessel operates at a lower pressure than the preceding devolatilization vessel; and a heat exchanger disposed between two devolatilization vessels and in fluid communication with them, where the heat exchanger has an inlet port temperature of 100° C. to 230° C., an outlet port temperature of 200° C. to 300° C., an inlet port pressure of 35 to 250 kgf/cmand an outlet port pressure of 20 to 200 kgf/cm; and wherein the polymer solution remains in a single phase during its residence in the heat exchanger. 1. A system for solution polymerization comprising:a reactor system that is operative to receive at least one monomer in a solvent and to react the monomer to form a polymer;a plurality of devolatilization vessels located downstream of the reactor system, where each devolatilization vessel operates at a lower pressure than the preceding devolatilization vessel and wherein the plurality of devolatilization vessels receives a polymer solution from the reactor system; and{'sup': 2', '2, 'a first heat exchanger disposed between two devolatilization vessels and in fluid communication with them, where the first heat exchanger has an inlet port temperature of 120° C. to 230° C., an outlet port temperature of 200° C. to 300° C., an inlet port pressure of 35 to 250 kgf/cmand an outlet port pressure of 20 to 200 kgf/cm; and wherein the polymer solution remains in a single phase during its residence in the first heat exchanger.'}2. The system of claim 1 , further comprising a distributor disposed in at least one devolatilization vessel claim 1 , wherein the distributor comprises: a second conduit; where the first conduit lies inside the second conduit to define a first annular space therebetween; where the ...

APPARATUS AND METHOD OF USE THEREOF

Disclosed herein is an apparatus comprising a shell; the shell having an inlet port for introducing a polymer solution into the shell and an outlet port for removing the polymer solution from the shell; wherein the polymer solution comprises a polymer and a solvent that is operative to dissolve the polymer; a plurality of plates in the shell; where the plurality of plates is stacked one atop the other to define a central passage that is in fluid communication with the inlet port of the shell; where the plurality of plates further defines a plurality of conduits, each conduit extending radially outwards from the central passage, where the plurality of conduits is in fluid communication with the central passage; and where the apparatus is operated at a pressure and a temperature effective to maintain the polymer solution in a single phase during its travel through the apparatus. 1. An apparatus for heating or cooling a polymer solution , comprising:a shell; the shell having an inlet port for introducing a polymer solution into the shell and an outlet port for removing the polymer solution from the shell; wherein the polymer solution comprises a polymer and a solvent that is operative to dissolve the polymer; anda plurality of plates in the shell; where the plurality of plates is stacked one atop the other to define a central passage that is in fluid communication with the inlet port of the shell; where the plurality of plates further defines a plurality of conduits, each conduit extending radially outwards from the central passage, where the plurality of conduits is in fluid communication with the central passage; and where the apparatus is operated at a pressure and a temperature effective to maintain the polymer solution in a single phase during its travel through the apparatus from the inlet port of the shell to an outlet port of the shell.2. The apparatus of claim 1 , wherein the polymer solution is heated claim 1 , cooled claim 1 , or maintained at a constant ...

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 ...

LUBRICANT COMPOSITIONS FOR IMPROVED HIGH PRESSURE FREE-RADICAL POLYMERIZATIONS

The invention provides a composition comprising at least the following: an oil, and at least one compound selected from Compounds 1 through 3, or a combination thereof, as described herein. The composition can be used to improve the high pressure, free-radical polymerizations of ethylene-based interpolymers, and to reduce polymer build-up in reciprocation devices throughout the process. 2. The composition of claim 1 , wherein the compound is present in an amount from 5 to 60 claim 1 ,000 ppm claim 1 , based on the weight of the oil.3. The composition of claim 1 , wherein the oil and compound comprise greater than claim 1 , or equal to claim 1 , 99.0 weight percent of the composition claim 1 , based on the weight of the composition.6. The process of any one of claim 5 , wherein claim 5 , during the polymerization claim 5 , the composition is continually injected into the at least one component.7. The process of claim 6 , wherein the composition is injected at a rate of 5 to 100 lbs/hr.8. The process of any one of claim 5 , wherein the at least one component is a reciprocation device.9. The process of claim 8 , wherein the reciprocation device is a Hyper-compressor.10. The process of claim 9 , wherein the discharge pressure in the Hyper-compressor is from 100 MPa to 400 MPa.11. The process of claim 5 , wherein the composition is injected at one or more injection points into the Hyper-compressor.12. The process of claim 5 , wherein the comonomer is selected from acrylic acid claim 5 , ethylene acrylate claim 5 , or a combination thereof.13. A process to reduce polymer build-up in a reciprocation device and/or rotational device claim 1 , used in the polymerization of a mixture comprising ethylene and at least one comonomer containing acid and/or ester groups claim 1 , said process comprising injecting the composition of into the reciprocation device and/or rotational device.14. The process of claim 13 , wherein claim 13 , during the polymerization claim 13 , the ...

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 ...

Processes to Form Ethylene-Based Polymers Using Asymmetrical Polyenes

A process to form an ethylene-based polymer including polymerizing ethylene and at least one asymmetrical polyene comprising an “alpha, beta unsaturated-carbonyl end” (“α,β unsaturated-carbonyl end”) and a “C—C double bond end,” wherein the polymerization takes place in the presence of at least one free-radical initiator; and wherein the polymerization takes place in a reactor configuration comprising at least two reaction zones, reaction zone 1 and reaction zone i (i≧2), wherein reaction zone i is downstream from reaction zone 1. 1. A process to form an ethylene-based polymer , said process comprising polymerizing ethylene and at least one asymmetrical polyene , comprising an “alpha , beta unsaturated-carbonyl end” and a “C—C double bond end ,” andwherein the polymerization takes place in the presence of at least one free-radical initiator; andwherein the polymerization takes place in a reactor configuration comprising at least two reaction zones, reaction zone 1 and reaction zone i (i≧2), wherein reaction zone i is downstream from reaction zone 1.2. The process of claim 1 , wherein more polyene is added to reaction zone i compared to the amount of polyene added to reaction zone 1.3. The process of claim 1 , wherein more polyene is added to reaction zone 1 as compared to the amount of polyene added to reaction zone i.4. The process of claim 1 , wherein the polyene is fed through a compression stage of a secondary compressor claim 1 , prior to being fed to a reaction zone.5. The process of claim 1 , whereinratio of “the concentration of the polyene incorporated into the locally-formed polymer of reaction zone 1” to “the concentration of the polyene incorporated into the locally-formed polymer of reaction zone 2 (i=2)” is less than or equal to 1.6. The process of claim 5 , wherein the ratio of “the concentration of the polyene incorporated into the locally-formed polymer of reaction zone 1” to “the concentration of the polyene incorporated into the locally-formed ...

LUBRICANT TREATMENTS FOR FREE-RADICAL POLYMERIZATIONS

A process to prepare an ethylene-based polymer, said process comprising polymerizing a mixture comprising ethylene, at a pressure greater than, or equal to, 100 MPa, in the presence of at least one free-radical initiator; and in a reactor system comprising at least one reactor and at least one Hyper-compressor, and wherein at least one oil formulation, optionally comprising one or more lubrication agents, is added to the Hyper-compressor; and wherein at least one of the following steps takes place: A) thermally treating the one or more lubrication agents, in an oxygen-free atmosphere, to achieve a peroxide level≤10 ppm, based on the weight of the lubrication agent(s), and then adding said agent(s) to the oil formulation, prior to adding the oil formulation to the Hyper-compressor; or B) thermally treating the oil formulation, in an oxygen-free atmosphere, to achieve a peroxide level≤10 ppm, based on the weight of the oil formulation, prior to adding the oil formulation to the Hyper-compressor; C) a combination of A and B.

PROCESSES TO IMPROVE REACTOR STABILITY FOR THE PREPARATION OF ETHYLENE-BASED POLYMERS USING ASYMMETRICAL POLYENES

The invention provides a process to form an ethylene-based polymer, said process comprising polymerizing ethylene and at least one asymmetrical polyene, comprising an “alpha, beta unsaturated—carbonyl end” and a “C—C double bond end,” and wherein the polymerization takes place in the presence of at least one free-radical initiator, and wherein the polymerization takes place in a reactor configuration comprising at least two reaction zones, reaction zone 1 and reaction zone i (i≧2), wherein reaction zone i is downstream from reaction zone 1; and wherein at least one chain transfer agent (CTA) is added to the polymerization, and wherein the CTA is a saturated hydrocarbon or an unsaturated hydrocarbon. 1. A process to form an ethylene-based polymer , said process comprising polymerizing ethylene and at least one asymmetrical polyene , comprising an “alpha , beta unsaturated—carbonyl end” and a “C—C double bond end ,” andwherein the polymerization takes place in the presence of at least one free-radical initiator, and wherein the polymerization takes place in a reactor configuration comprising at least two reaction zones, reaction zone 1 and reaction zone i (i≧2), wherein reaction zone i is downstream from reaction zone 1; andwherein at least one chain transfer agent (CTA) is added to the polymerization, and wherein the CTA is a saturated hydrocarbon or an unsaturated hydrocarbon.2. The process of claim 1 , wherein the CTA is selected from an alkane claim 1 , an alkene claim 1 , or a combination thereof.3. The process of claim 1 , wherein the polyene is subject to an “oxygen removal step” prior to being fed to a reaction zone.4. The process of claim 1 , wherein the polyene is stored in a feed vessel claim 1 , and wherein the feed vessel has a “head-space gas” comprising less than 5.0 volume percent oxygen.5. The process of claim 1 , wherein the polyene is fed through a compression stage directly into the reaction zone or directly into the feed to the reaction zone.6. ...

ETHYLENE-BASED POLYMERS WITH IMPROVED MELT STRENGTH AND PROCESSES FOR THE SAME

The invention provides an ethylene-based polymer formed from at least the following: ethylene and a monomeric chain transfer agent (monomeric CTA) selected from Structure 1: wherein L is selected from a saturated hydrocarbon, a substituted saturated hydrocarbon, an unsaturated hydrocarbon, or a substituted unsaturated hydrocarbon; R1 is selected from hydrogen, a saturated hydrocarbon, a substituted saturated hydrocarbon, an unsaturated hydrocarbon, or a substituted unsaturated hydrocarbon; R2 is selected from hydrogen, a saturated hydrocarbon or a substituted saturated hydrocarbon; R3 is selected from hydrogen, a saturated hydrocarbon or a substituted saturated hydrocarbon; and R4 is selected from a saturated hydrocarbon, a substituted saturated hydrocarbon, an unsaturated hydrocarbon, or a substituted unsaturated hydrocarbon. 2. The ethylene-based polymer of claim 1 , wherein L is selected from a saturated hydrocarbon or a substituted saturated hydrocarbon.3. The ethylene-based polymer of claim 1 , wherein L is selected from the group consisting of the following:{'sub': 2', 'n, 'a) —(CH)—, where n≧2;'}{'sub': 2', '2', 'n', '2', '2, 'b) —(CHCHO)—CHCH—, where n≧1;'}{'sub': 2', '3', 'n', '2', '3, 'c) —(CHCH(CH)O)—CHCH(CH)—, where n≧1;'}{'sub': 2', '2', '3', 'n', '2', '2', '3, 'd) —(CHCH(CHCH)O)—CHCH(CHCH)—, where n≧1; and'}{'sub': 2', '2, 'e) —CH—CH(OH)—CH—;'}{'sub': 3', '2, 'f) —CH(CH)—CH—;'}{'sub': 2', '3, 'g) —CH—CH(CH)—;'}{'sub': 3', '2', '2', '3, 'h) a combination of —CH(CH)—CH— and —CH—CH(CH)—;'}{'sub': 2', '3', '2, 'i) —CH(CHCH)—CH—;'}{'sub': 2', '3, 'j) —CH2-CH(CHCH)—; and'}{'sub': 2', '3', '2', '2', '2', '3, 'k) a combination of —CH(CHCH)—CH— and —CH—CH(CHCH)—.'}4. The ethylene-based polymer of claim 1 , wherein L is an alkylene.5. The ethylene-based polymer of claim 1 , wherein R1 is hydrogen or an alkyl group.6. The ethylene-based polymer of claim 1 , wherein R2 is hydrogen or an alkyl group.7. The ethylene-based polymer of claim 1 , wherein R2 is selected ...

Processes to Form Ethylene-Based Polymers Using Asymmetrical Polyenes

A process to form an ethylene-based polymer including polymerizing ethylene and at least one asymmetrical polyene comprising an “alpha, beta unsaturated-carbonyl end” (“α,β unsaturated-carbonyl end”) and a “C—C double bond end,” wherein the polymerization takes place in the presence of at least one free-radical initiator; and wherein the polymerization takes place in a reactor configuration comprising at least two reaction zones, reaction zone 1 and reaction zone i (i≧2), wherein reaction zone i is downstream from reaction zone 1. 115-. (canceled)16. A process to form an ethylene-based polymer , said process comprising polymerizing ethylene and at least one asymmetrical polyene , comprising an “alpha , beta unsaturated-carbonyl end” and a “C—C double bond end ,” andwherein the polymerization takes place in the presence of at least one free-radical initiator;wherein the polymerization takes place in a reactor configuration comprising at least two reaction zones, reaction zone 1 and reaction zone i (i≧2), wherein reaction zone i is downstream from reaction zone 1; andwherein ethylene and polyene are fed to the reactor configuration as an ethylene feed and the concentration of polyene in the ethylene feed is less than 0.2 mole percent based on the total moles of ethylene fed to the reactor configuration.17. The process of claim 16 , wherein no polyene is added to reaction zone 1.18. The process of claim 16 , wherein the reaction takes place in a reactor configuration comprising at least one tubular reactor.19. The process of claim 18 , wherein the reaction take place in a reactor configuration further comprising an autoclave reactor claim 18 , wherein the tubular reactor is downstream from the autoclave reactor.20. The process of claim 16 , wherein at least one CTA selected from the group consisting of saturated hydrocarbons claim 16 , unsaturated hydrocarbons claim 16 , ketones claim 16 , aldehydes claim 16 , alcohols and ethers is added to the polymerization.21. The ...

Ethylene-Based Interpolymers and Composition Comprising the Same

A first ethylene-based interpolymer comprising, in polymerized form, monomer units derived from ethylene and from a benzocyclobutene (VBCB) structure of Structure 1; wherein n is from 3 to 10; and wherein the ethylene-based polymer comprises, in polymerized form, from 0.02 to 0.70 wt % of the Structure 1, based on the weight of the first ethylene-based interpolymer, as determined by H NMR is provided. Further provided is a composition which comprises a second ethylene-based inter-polymer formed by thermally treating a first ethylene-based interpolymer. 2. The first ethylene-based interpolymer of claim 1 , wherein the first ethylene-based interpolymer comprises greater than 60 wt % units claim 1 , in polymerized form claim 1 , derived from ethylene claim 1 , based on the weight of the first ethylene-based interpolymer.3. The first ethylene-based interpolymer of claim 1 , wherein the first ethylene-based interpolymer comprises greater than 80 wt % units claim 1 , in polymerized form claim 1 , derived from ethylene claim 1 , based on the weight of the first ethylene-based interpolymer.4. The first ethylene-based interpolymer of claim 1 , wherein the first ethylene-based interpolymer comprises greater than 99 wt % units claim 1 , in polymerized form claim 1 , derived from ethylene claim 1 , based on the weight of the first ethylene-based interpolymer.5. The first ethylene-based interpolymer of claim 1 , wherein the first ethylene-based interpolymer has an absolute weight average molecular weight from 20 claim 1 ,000 to 150 claim 1 ,000 g/mole.6. The first ethylene-based interpolymer of claim 1 , wherein the first ethylene-based interpolymer has an absolute weight average molecular weight from 80 claim 1 ,000 to 100 claim 1 ,000 g/mole.7. A composition comprising a second ethylene-based interpolymer formed by thermally treating the first ethylene-based polymer of .8. The composition of claim 7 , wherein the first ethylene-based interpolymer is thermally treated at a ...

PROCESS TO FORM AN ETHYLENE-BASED POLYMER

catalisadores de bis-bifenilfenoxi para polimerização de polímeros à base de etileno de baixo peso molecular. a invenção fornece um processo e complexo de metal de transição para formar um polímero à base de etileno, o referido processo compreendendo polimerização de etileno e, opcionalmente, pelo menos um comonômero na presença de pelo menos um complexo de metal de transição molecular selecionado da fórmula 1, como descrito aqui. bis-biphenylphenoxy catalysts for polymerization of low molecular weight ethylene-based polymers. the invention provides a process and transition metal complex for forming an ethylene-based polymer, said process comprising polymerizing ethylene and optionally at least one comonomer in the presence of at least one molecular transition metal complex selected from the formula 1, as described here.

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.

Bis-biphenylphenoxy catalysts for polymerization of low molecular weight ethylene-based polymers

The invention provides a process, and transition metal complex, to form an ethylene-based polymer, said process comprising polymerizing ethylene, and optionally at least one comonomer, in the presence of at least one molecular transition metal complex selected from Formula 1, as described herein.

Bis-biphenylphenoxy catalysts for polymerization of low molecular weight ethylene-based polymers

The invention provides a process, and transition metal complex, to form an ethylene-based polymer, said process comprising polymerizing ethylene, and optionally at least one comonomer, in the presence of at least one molecular transition metal complex selected from Formula 1, as described herein.

Bis-biphenylphenoxy catalysts for polymerization of low molecular weight ethylene-based polymers

The invention provides a process, and transition metal complex, to form an ethylene-based polymer, said process comprising polymerizing ethylene, and optionally at least one comonomer, in the presence of at least one molecular transition metal complex selected from Formula 1, as described herein.

Ethylene-Based Polymer Composition with Branching and Process for Producing the Same

The present disclosure provides a composition. In an embodiment, the composition is an ethylene-based polymer composition formed by high pressure (greater or equal to 100 MPa) free radical polymerization. The ethylene-based polymer composition includes ethylene monomer and a mixture of hydroxyl-terminated polybutadiene molecules (PB-OH). Each PB-OH molecule includes internal alkene groups and terminal alkene groups. Each PB-OH molecule has more internal alkene groups than terminal alkene groups. 1. An ethylene-based polymer composition formed by high pressure (greater or equal to 100 MPa) free radical polymerization comprising:ethylene monomer and a mixture of hydroxyl-terminated polybutadiene molecules (PB-OH), each PB-OH molecule comprising internal alkene groups and terminal alkene groups, each PB-OH molecule having more internal alkene groups than terminal alkene groups.3. The ethylene-based polymer composition of claim 2 , wherein the mixture of hydroxyl-terminated polybutadiene molecules based on Structure I has a molecular weight distribution from 1.2 to 10.5. The ethylene-based polymer composition of claim 4 , wherein the mixture of hydroxyl-terminated polybutadiene molecules based on Structure II has a molecular weight distribution from 1.2 to 10.6. The ethylene-based polymer composition of claim 1 , wherein the ethylene-based polymer composition comprises claim 1 , in polymerized form claim 1 , from 95 wt % to 99.98 wt % of ethylene claim 1 , and from 5.0 wt % to 0.02 wt % to 5.0 wt % of the mixture of hydroxyl-terminated polybutadiene molecules claim 1 , based on the total weight of the ethylene-based polymer composition.7. The ethylene-based polymer composition of claim 1 , wherein the ethylene-based polymer composition has a terminal alkene content from 0.15/1000 carbons to 0.9/1000 carbons.8. The ethylene-based polymer composition of claim 1 , wherein the ethylene-based polymer composition has an internal trans-alkene content from 0.1/1000 carbons to 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; 2.16kg/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 R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are each, independently, a hydrocarbyl group or a substituted hydrocarbyl group, and wherein, optionally, two or more R groups (R 1 , R 2 , R 3 , R 4 , R 5 and R 6 ) form a ring structure.

Self limiting catalyst composition for ethylene polymerization

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.

Processes to prepare ethylene-based polymer compositions

The present invention relates to 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

Processes to control fouling and improve compositions

Improved reaction processes comprise reacting a mixture to form a product comprising a metal alkyl, metal oxide, or mixture thereof and then passing said product to a post-reactor heat exchanger. The improvement comprises one or more of the following: (1) reacting said metal alkyl compound with an acid to produce a soluble metal ester; or (2) adding an ionic surfactant; or (3) adding a mixture comprising an antioxidant to the product under conditions sufficient to avoid formation of significant amounts of insoluble metal or metal compounds derived from said metal alkyl compound; or (4) purging said post-reactor heat exchanger with an inert gas under conditions to remove metal oxide from the post-reactor heat exchanger.

Self limiting catalyst composition for ethylene polymerization

A process for polymerizing ethylene to produce an ethylene -based polymer including contacting ethylene with a Ziegler-Natta procatalyst, an alkylaluminum cocatalyst and a self limiting agent selected from the group of aliphatic, cycloaliphatic, substituted cycloaliphatic or aromatic esters, anhydrides and amides such that the self limiting agent reduces polymerization rates to no greater than 40% of the polymerization rate in the absence of the self limiting agent at temperatures equal to or greater than 120 °C is provided.

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.

Processes to Control Fouling and Improve Compositions

Improved reaction processes comprise reacting a mixture to form a product comprising a metal alkyl, metal oxide, or mixture thereof and then passing said product to a post-reactor heat exchanger. The improvement comprises one or more of the following: (1) reacting said metal alkyl compound with an acid to produce a soluble metal ester; or (2) adding an ionic surfactant; or (3) adding a mixture comprising an antioxidant to the product under conditions sufficient to avoid formation of significant amounts of insoluble metal or metal compounds derived from said metal alkyl compound; or (4) purging said post-reactor heat exchanger with an inert gas under conditions to remove metal oxide from the post-reactor heat exchanger.

Processes to control fouling and improve compositions

Improved reaction processes comprise reacting a mixture to form a product comprising a metal alkyl, metal oxide, or mixture thereof and then passing said product to a post-reactor heat exchanger. The improvement comprises one or more of the following: (1) reacting said metal alkyl compound with an acid to produce a soluble metal ester; or (2) adding an ionic surfactant; or (3) adding a mixture comprising an antioxidant to the product under conditions sufficient to avoid formation of significant amounts of insoluble metal or metal compounds derived from said metal alkyl compound; or (4) purging said post-reactor heat exchanger with an inert gas under conditions to remove metal oxide from the post-reactor heat exchanger.

Process for forming ethylene based polymers

Drag reducing agent

The present disclosure provides a drag reducing agent. In an embodiment, the drag reducing agent includes a polymer and a liquid carrier. The polymer is composed of one or more C 6 -C 14 α-olefin monomers. The polymer includes a residual amount of zirconium. The polymer has an absolute weight average molecular weight (Mw (Abs) ) greater than 1,300,000 g/mol and a (Mw (Abs) / Mn (Abs) from 1.3 to 3.0.

ethylene-based polymer, composition, article and process for preparing the ethylene-based polymer

Ethylene-based polymers and processes to make the same

Procedures for forming polymers based on ethylene using asymmetric polyenes

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/cm 3 to 0.97 g/cm 3 , and ii) a melt index, I 2 , 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-based polymer composition with branching and process for producing the same

The present disclosure provides a polymer composition. In an embodiment, an ethylene-based polymer composition is provided and is formed by high pressure (greater than or equal to 100 MPa), free-radical polymerization, by reacting: ethylene monomer and a mixture of hydrocarbon-based molecules, with each hydrocarbon-based molecule comprising three or more terminal alkene groups.

Ethylene-based polymer composition with branching

The present disclosure provides an ethylene-based polymer. The ethylene-based polymer is formed from reacting, under polymerization conditions, ethylene monomer and bisallyl maleate ("BAIIM"). The present ethylene-based polymer with ethylene monomer and bisallyl maleate branching agent is interchangeably referred to as "BAIIM-PE."

Ethylene-based polymer composition with branching and process for producing the same

The present disclosure provides an ethylene-based polymer composition formed by high pressure (greater or equal to 100 MPa) free radical polymerization. The ethylene-based polymer composition includes ethylene monomer and a mixture of hydrocarbon-based molecules, each hydrocarbon-based molecule comprising three or more terminal alkene groups. The ethylene-based polymer has a melt index (MI) from 0.1 to 1.0 g/10min.

Ethylene-based polymer composition with branching and process for producing the same

The present disclosure provides a composition. In an embodiment, the composition is an ethylene-based polymer composition formed by high pressure (greater or equal to 100 MPa) free radical polymerization. The ethylene-based polymer composition includes ethylene monomer and a mixture of hydroxyl-terminated polybutadiene molecules (PB-OH). Each PB-OH molecule includes internal alkene groups and terminal alkene groups. Each PB-OH molecule has more internal alkene groups than terminal alkene groups.

Ethylene-based polymer composition with multifunctional branching agent and process for producing same

The present disclosure provides a process. In an embodiment, the process includes providing a multifunctional branching agent (MFBA). The MFBA has A) three or more carbon- carbon double bonds with the provisos (1) that the MFBA is not a polymer of butadiene, and (2) the MFBA does not contain an acrylate group or a methacrylate group. The MFBA has B) a total reactivity, R, greater than 3 and less than 40, (3<R<40) wherein R is determined with the following formula (I): wherein j = index of summation, p = the number of different types of carbon-carbon double bonds j in the molecule, n j = the number of each carbon-carbon double bond of type j in the molecule, and r 1,j = the relative reactivity ratio (RRR) of ethylene to the carbon-carbon double bond j. The process includes reacting the MFBA with ethylene under polymerization conditions and forming an ethylene-based polymer composition composed of units of ethylene and units of the MFBA. The present disclosure also provides the ethylene-based polymer composition resulting from the process.

Ethylene-based interpolymers and composition comprising the same

A first ethylene-based interpolymer comprising, in polymerized form, monomer units derived from ethylene and from a benzocyclobutene (VBCB) structure of Structure 1; wherein n is from 3 to 10; and wherein the ethylene-based polymer comprises, in polymerized form, from 0.02 to 0.70 wt% of the Structure 1, based on the weight of the first ethylene-based interpolymer, as determined by 1 H NMR is provided. Further provided is a composition which comprises a second ethylene-based interpolymer formed by thermally treating a first ethylene-based interpolymer.

bis-biphenylphenoxy catalysts for polymerization of low molecular weight ethylene-based polymers

a invenção fornece um processo e complexo de metal de transição para formar um polímero à base de etileno, o referido processo compreendendo polimerização de etileno e, opcionalmente, pelo menos um comonômero na presença de pelo menos um complexo de metal de transição molecular selecionado da fórmula 1, como descrito aqui. The invention provides a process and transition metal complex for forming an ethylene-based polymer, said process comprising ethylene polymerization and optionally at least one comonomer in the presence of at least one molecular transition metal complex selected from the formula. 1 as described herein.

Bis-biphenylphenoxy catalysts for polymerization of low molecular weight ethylene-based polymers

Bis-biphenylphenoxy catalysts for the polymerization of low molecular weight ethylene-based polymers

Un proceso para formar un polímero basado en etileno, comprendiendo dicho proceso polimerizar etileno, y opcionalmente al menos un comonómero, en presencia de al menos un complejo molecular de metal de transición seleccionado de Fórmula 1: **(Ver fórmula)** en donde M es titanio, circonio o hafnio, cada uno independientemente en un estado de oxidación formal de +4; X y n se seleccionan de modo que el complejo metal-ligando sea neutro; cada resto Z es, independientemente, -O-, -S-, -N [hidrocarbilo(C1-C40)]-, o -P[hidrocarbilo(C1-C40)]-; RX se selecciona de lo siguiente: un hidrocarbilo(C1-C40) sustituido o sin sustituir; un heterohidrocarbilo(C1-C40) sustituido o sin sustituir: -Si(RC)3, -OSi(RC)3, -Ge(RC)3, -P(RC)2, -N(RC)2, -ORC, -SRC, -NO2, -CN, -CF3, -OCF3, -S(O)RC, -S(O)2RC, -N=C(RC)2, -OC(O)RC, -C(O)ORC, -N(R)C(O)RC, -C(O)N(RC)2, un halógeno o un hidrógeno; y en donde cada RC es independientemente un hidrocarbilo(C1-C30) sustituido o sin sustituir, o un heterohidrocarbilo(C1-C30) sustituido o sin sustituir; Ry se selecciona de lo siguiente: un hidrocarbilo(C1-C40) sustituido o sin sustituir; un heterohidrocarbilo(C1-C40) sustituido o sin sustituir; -Si(RC)3, -OSi(RC)3, -Ge (RC)3, -P(RC)2, -N(RC)2, -ORC, -SRC, -NO2, -CN, -CF3, -OCF3, -S(O)RC, -S(O)2RC, -N=C(RC)2, -OC(O)RC, -C(O)ORC, -N(R)C(O)RC, -C(O)N(RC)2, un halógeno o un hidrógeno; y en donde cada RC es independientemente hidrocarbilo(C1-C30) sustituido o sin sustituir, o un heterohidrocarbilo(C1-C30) sustituido o sin sustituir; y en donde, cuando Rx es hidrógeno, Ry no es hidrógeno, y cuando Ry es hidrógeno, Rx no es hidrógeno; y en donde Rx y Ry pueden formar opcionalmente una estructura de anillo; y en donde R1a, R2a, R3a, R4a, R1b, R2b, R3b, R4b, R6c, R7c, R8c, R6d, R7d y R8d cada uno, independientemente, se selecciona de lo siguiente: un hidrocarbilo(C1-C40) sustituido o sin sustituir, un heterohidrocarbilo(C1-C40) sustituido o sin sustituir, -Si(RC)3, -OSi(RC)3, -Ge(RC)3, -P(RC)2, -N(RC)2, -ORC, -SRC, ...

Bis-biphenylphenoxy catalysts for polymerization of low molecular weight ethylene-based polymers

The invention provides a process, and transition metal complex, to form an ethylene-based polymer, said process comprising polymerizing ethylene, and optionally at least one comonomer, in the presence of at least one molecular transition metal complex selected from Formula 1, as described herein.

Method to reduce fouling in an upgrade reactor

método para reduzir a incrustação em um reator de aprimoramento. trata-se de um método para reduzir a incrustação em um reator de aprimoramento que inclui o aprimoramento de c2 a c4 hidrocarbonetos dentro do reator de aprimoramento na presença de um inibidor de incrustação que tem um tamanho de partícula d50 menor que 100 µm e formando alfa olefinas lineares e polímero durante o aprimoramento, em que o inibidor de incrustação altera a morfologia do polímero. method for reducing fouling in an upgrade reactor. it is a method for reducing fouling in an upgrade reactor that includes upgrading c2 to c4 hydrocarbons within the upgrading reactor in the presence of a fouling inhibitor that has a d50 particle size of less than 100 µm and forming alpha linear olefins and polymer during enhancement, where the scale inhibitor alters the morphology of the polymer.

Processes to control fouling and improve compositions

Improved reaction processes comprise reacting a mixture to form a product comprising a metal alkyl, metal oxide, or mixture thereof and then passing said product to a post-reactor heat exchanger. The improvement comprises one or more of the following: (1) reacting said metal alkyl compound with an acid to produce a soluble metal ester; or (2) adding an ionic surfactant; or (3) adding a mixture comprising an antioxidant to the product under conditions sufficient to avoid formation of significant amounts of insoluble metal or metal compounds derived from said metal alkyl compound; or (4) purging said post-reactor heat exchanger with an inert gas under conditions to remove metal oxide from the post-reactor heat exchanger.

antifouling composition and reaction process to reduce fouling

composição anti-incrustação e processo de reação para reduzir incrustaçóes processos de reação melhorados compreendem reagir uma mistura para formar um produto compreendendo um alquila metálico, óxido metálico, ou mistura destes e então passar o di to produto para um trocador de calor pósreator. o melhoramento compreende um ou mais dos seguintes: (1) reagir o dito composto de alquila metálico com um ácido de maneira a produzir um éster metálico solúvel; ou ( 2) adicionar um tensoati vo iônico; ou ( 3) adicionar uma mistura compreendendo um antioxidante ao produto sob condições suficientes para evitar a formação de quantidades significativas de metal ou compostos metálicos insolúveis derivados do dito composto de alquila metálico; ou (4) purgar o dito trocador de calor pós-reator com um gás inerte sob condições tais a remover óxido metálico do trocador de calor pós-reator. antifouling composition and reaction process for reducing fouling Improved reaction processes comprise reacting a mixture to form a product comprising a metal alkyl, metal oxide, or mixture thereof and then passing the product to a post-reactor heat exchanger. The improvement comprises one or more of the following: (1) reacting said metal alkyl compound with an acid to produce a soluble metal ester; or (2) add an ionic surfactant; or (3) adding a mixture comprising an antioxidant to the product under conditions sufficient to prevent the formation of significant amounts of metal or insoluble metal compounds derived from said metal alkyl compound; or (4) purging said post-reactor heat exchanger with an inert gas under conditions such as removing metal oxide from the post-reactor heat exchanger.

Processes to control fouling and improve compositions

Improved reaction processes comprise reacting a mixture to form a product comprising a metal alkyl, metal oxide, or mixture thereof and then passing said product to a post-reactor heat exchanger. The improvement comprises one or more of the following: (1) reacting said metal alkyl compound with an acid to produce a soluble metal ester; or (2) adding an ionic surfactant; or (3) adding a mixture comprising an antioxidant to the product under conditions sufficient to avoid formation of significant amounts of insoluble metal or metal compounds derived from said metal alkyl compound; or (4) purging said post-reactor heat exchanger with an inert gas under conditions to remove metal oxide from the post-reactor heat exchanger.

Processes to control fouling and improve compositions

PROCESSES TO CONTROL FOULING AND IMPROVE COMPOSITIONSAbstractImproved reaction processes comprise reacting a mixture to form a product comprising a metal alkyl, metal oxide, or mixture thereof and then passing said product to a post-reactor heat exchanger. The improvement comprises one or more of the following: (1) reacting said metal alkyl compound with an acid to produce a soluble metal ester; or (2) adding an ionic surfactant; or (3) adding a mixture comprising an antioxidant to the product under conditions sufficient to avoid formation of significant amounts of insoluble metal or metal compounds derived from said metal alkyl compound; or (4) purging said post-reactor heat exchanger with an inert gas under conditions to remove metal oxide from the post-reactor heat exchanger.(Fig. 1)

Method and system for polymer production

Disclosed herein is a system for solution polymerization comprising a reactor system that is operative to receive a monomer and to react the monomer to form a polymer; a plurality of devolatilization vessels located downstream of the reactor system, where each devolatilization vessel operates at a lower pressure than the preceding devolatilization vessel; and a heat exchanger disposed between two devolatilization vessels and in fluid communication with them, where the heat exchanger has an inlet port temperature of 100°C to 230°C, an outlet port temperature of 200°C to 300°C, an inlet port pressure of 35 to 250 kgf/cm 2 and an outlet port pressure of 20 to 200 kgf/cm 2 ; and wherein the polymer solution remains in a single phase during its residence in the heat exchanger.

Polímeros basados en etileno con una resistencia a la fusión mejorada, y procesos para lo mismo.

La invención proporciona un polímero basado en etileno formado a partir de cuando menos los siguientes: etileno y un agente de transferencia de cadena monomérico (CTA monomérico) seleccionado a partir de la estructura 1: (ver Fórmula) en donde: L se selecciona a partir de un hidrocarburo saturado, un hidrocarburo saturado sustituido, un hidrocarburo insaturado, o un hidrocarburo insaturado sustituido; R1 se selecciona a partir de hidrógeno, un hidrocarburo saturado, un hidrocarburo saturado sustituido, un hidrocarburo insaturado, o un hidrocarburo insaturado sustituido; R2 se selecciona a partir de hidrógeno, un hidrocarburo saturado, o un hidrocarburo saturado sustituido; R3 se selecciona a partir de hidrógeno, un hidrocarburo saturado, o un hidrocarburo saturado sustituido; y R4 se selecciona a partir de un hidrocarburo saturado, un hidrocarburo saturado sustituido, un hidrocarburo insaturado, o un hidrocarburo insaturado sustituido.

Process to visbreak propylene-based polymers with c-c initiators

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).

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.

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.

process for forming an ethylene-based polymer, process for polymerizing an ethylene-based polymer composition, composition and article

resumo “processo para formar um polímero à base de etileno, processo para polimerizar uma composição de polímero à base de etileno, composição e artigo” a invenção provê um processo para formar um polímero à base de etileno, dito processo compreendendo polimerizar etileno na presença pelo menos do seguinte: a) um agente de radical livre; b) um fenol alquilado selecionado da fórmula i, (i) onde r1, r2, r3, r4 e r5 são, cada qual, independentemente, hidrogênio ou alquila; e c) um “composto contendo metal-alquila” selecionado do grupo consistindo do seguinte: i) pelo menos um “composto contendo metal do grupo ii-alquila,”, ii) pelo menos um “composto contendo metal do grupo iii-alquila”, e iii) uma combinação de i) e ii). 1/1 Abstract "process for forming an ethylene-based polymer, process for polymerizing an ethylene-based polymer composition, composition and article" The invention provides a process for forming an ethylene-based polymer, said process comprising polymerizing ethylene in the presence of the polymer. least of 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 alkyl; and c) a "metal-alkyl containing compound" selected from the group consisting of the following: (i) at least one "ii-alkyl group metal-containing compound," ii) at least one "iii-alkyl group metal-containing compound"; and iii) a combination of i) and ii). 1/1

Method and system for polymer production

Disclosed herein is a system for solution polymerization comprising a reactor system that is operative to receive a monomer and to react the monomer to form a polymer; a plurality of devolatilization vessels located downstream of the reactor system, where each devolatilization vessel operates at a lower pressure than the preceding devolatilization vessel; and a heat exchanger disposed between two devolatilization vessels and in fluid communication with them, where the heat exchanger has an inlet port temperature of 100°C to 230°C, an outlet port temperature of 200°C to 300°C, an inlet port pressure of 35 to 250 kgf/cm 2 and an outlet port pressure of 20 to 200 kgf/cm 2 ; and wherein the polymer solution remains in a single phase during its residence in the heat exchanger.

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/1000C, 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.

Composition comprising at least one ethylene-based polymer, prepared from a free-radical polymerization

The present invention relates to 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.

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/1000C, as determined by 1 H NMR, and x=mol % polymerized α-olefin, as determined by 13 C NMR.

Ethylene-based polymers with improved melt strength and processes for the same

The invention provides an ethylene-based polymer formed from at least the following: ethylene and a monomeric chain transfer agent (monomeric CTA) selected from Structure 1: wherein L is selected from a saturated hydrocarbon, a substituted saturated hydrocarbon, an unsaturated hydrocarbon, or a substituted unsaturated hydrocarbon; R1 is selected from hydrogen, a saturated hydrocarbon, a substituted saturated hydrocarbon, an unsaturated hydrocarbon, or a substituted unsaturated hydrocarbon; R2 is selected from hydrogen, a saturated hydrocarbon or a substituted saturated hydrocarbon; R3 is selected from hydrogen, a saturated hydrocarbon or a substituted saturated hydrocarbon; and R4 is selected from a saturated hydrocarbon, a substituted saturated hydrocarbon, an unsaturated hydrocarbon, or a substituted unsaturated hydrocarbon.

Processes to improve reactor stability for the preparation of ethylene-based polymers using asymmetrical polyenes

The invention provides a process to form an ethylene-based polymer, said process comprising polymerizing ethylene and at least one asymmetrical polyene, comprising an "alpha, beta unsaturated - carbonyl end" and a "C-C double bond end," and wherein the polymerization takes place in the presence of at least one free-radical initiator, and wherein the polymerization takes place in a reactor configuration comprising at least two reaction zones, reaction zone 1 and reaction zone i (i ≥ 2), wherein reaction zone i is downstream from reaction zone 1; and wherein at least one chain transfer agent (CTA) is added to the polymerization, and wherein the CTA is a saturated hydrocarbon or an unsaturated hydrocarbon.

Ethylene-based interpolymers and composition comprising the same

A first ethylene-based interpolymer comprising, in polymerized form, monomer units derived from ethylene and from a benzocyclobutene (VBCB) structure of Structure 1; wherein n is from 3 to 10; and wherein the ethylene-based polymer comprises, in polymerized form, from 0.02 to 0.70 wt% of the Structure 1, based on the weight of the first ethylene-based interpolymer, as determined by 1 H NMR is provided. Further provided is a composition which comprises a second ethylene-based interpolymer formed by thermally treating a first ethylene-based interpolymer.

Processes to form ethylene-based polymers using asymmetrical polyenes

A process to form an ethylene-based polymer including polymerizing ethylene and at least one asymmetrical polyene comprising an “alpha, beta unsaturated-carbonyl end” (“α,β-unsaturated-carbonyl end”) and a “C—C double bond end,” wherein the polymerization takes place in the presence of at least one free-radical initiator; and wherein the polymerization takes place in a reactor configuration comprising at least two reaction zones, reaction zone 1 and reaction zone i (i>2), wherein reaction zone i is downstream from reaction zone 1.

Processes to form ethylene-based polymers using asymmetrical polyenes

A process to form an ethylene-based polymer including polymerizing ethylene and at least one asymmetrical polyene comprising an “alpha, beta unsaturated-carbonyl end” (“α,β unsaturated-carbonyl end”) and a “C—C double bond end,” wherein the polymerization takes place in the presence of at least one free-radical initiator; and wherein the polymerization takes place in a reactor configuration comprising at least two reaction zones, reaction zone 1 and reaction zone i (i≥2), wherein reaction zone i is downstream from reaction zone 1.

Ethylene based interpolymers and composition comprising the same

A first ethylene-based interpolymer comprising, in polymerized form, monomer units derived from ethylene and from a benzocyclobutene (VBCB) structure of Structure 1; wherein n is from 3 to 10; and wherein the ethylene-based polymer comprises, in polymerized form, from 0.02 to 0.70 wt % of the Structure 1, based on the weight of the first ethylene-based interpolymer, as determined by 1H NMR is provided. Further provided is a composition which comprises a second ethylene-based inter-polymer formed by thermally treating a first ethylene-based interpolymer.

process to form an ethylene-based polymer

processo para formar um polímero a base de etileno a invenção provê um processo para formar um polímero a base de etileno, o dito processo compreendendo polimerizar etileno na presença de pelo menos um agente de radicais livres, e na presença de um "composto metálico contendo alquila" selecionado do grupo consistindo dos seguintes: (i) pelo menos um "composto contendo alquila de metal do grupo ii",(ii) pelo menos um "composto contendo alquila de metal do grupo iii", ou (iii) uma combinação de (i) e (ii). a invenção provê também uma composição compreendendo um polímero a base de etileno preparado por uma polimerização via radicais livres, e o polímero a base de etileno ter a seguinte propriedade: y > 0,28567x "0,00032, na qual y= vinila/1000 c, determinado por nmr de 1h, e x= % molar de a-olefina polimerizada, determinada por nmr de 13c. a invenção provê também uma composição compreendendo pelo menos um polímero a base de etileno preparado por uma polimerização via radicais livres, e o polímero a base de etileno ter as seguintes propriedades: (a) um teor de vinila maior ou igual a 0,3 vinila por 1000 c (carbonos totais), e (b) um nível de a- olefina polimerizada menor ou igual a 1,00 por cento molar, com base no total de mols de monômeros polimerizados.

Processes to improve reactor stability for the preparation of ethylene-based polymers using asymmetrical polyenes

Procedures to improve reactor stability for the preparation of ethylene-based polymers using asymmetric polyenes

process for forming an ethylene-based polymer, ethylene-based polymer, composition and article

PROCESS FOR PREPARING A SECOND PROPYLENE-BASED POLYMER FROM A FIRST PROPYLENE-BASED POLYMER

PROCESSO PARA VISCORREDUÇÃO DE POLÍMEROS BASEADOS EM PROPILENO COM INICIADORES C-C. A invenção fornece um processo para preparar um segundo polímero baseado em propileno de um primeiro polímero baseado em propileno, cada polímero baseado em propileno tendo um índice de fluidez (MFR; 2,16 kg/230°C) com o MFR do segundo polímero baseado em propileno maior do que o MFR do primeiro polímero baseado em propileno, o processo compreendendo a etapa de contatar sob condições de viscorredução o primeiro polímero baseado em propileno com pelo menos um iniciador de radicais livres de carbono-carbono (C-C) de Estrutura (I):(Estrutura (I)), em que R1, R2, R3, R4, R5 e R6 são cada um, independentemente, um grupo hidrocarbil ou um grupo hidrocarbil substituído, e em que, opcionalmente, dois ou mais grupos R (R1, R2, R3, R4, R5 e R6) formam uma estrutura em anel. PROCESS FOR VISCOREREDUCTION OF PROPYLENE-BASED POLYMERS WITH C-C INITIATORS. The invention provides a process for preparing a second propylene-based polymer from a first propylene-based polymer, each propylene-based polymer having a melt index (MFR; 2.16 kg/230°C) with the MFR of the second propylene-based polymer in propylene 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.

Process for making ethylene-based polymers using hydrocarbon initiators

Lubricant compositions for improved high pressure free-radical polymerizations

The invention provides a composition comprising at least the following: an oil, and at least one compound selected from Compounds 1 through 3, or a combination thereof, as described herein. The composition can be used to improve the high pressure, free-radical polymerizations of ethylene-based interpolymers, and to reduce polymer build-up in reciprocation devices throughout the process.

Processes to prepare ethylene-based polymer compositions

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 1 , R 2 , R 3 , R 4 , R 5 and R 6 , are each, independently, hydrogen or a hydrocarbyl group and wherein, optionally, two or more R groups (R 1 , R 2 , R 3 , R 4 , R 5 and R 6 ) form a ring structure, with the provisos that at least one of R 2 and R 5 , and at least one of R 3 and R 6 is a hydrocarbyl group of at least two carbon atoms, e.g., an alkaryl of at least seven carbon atoms.

Self limiting catalyst composition for ethylene polymerization

A process for polymerizing ethylene to produce an ethylene -based polymer including contacting ethylene with a Ziegler-Natta procatalyst, an alkylaluminum cocatalyst and a self limiting agent selected from the group of aliphatic, cycloaliphatic, substituted cycloaliphatic or aromatic esters, anhydrides and amides such that the self limiting agent reduces polymerization rates to no greater than 40% of the polymerization rate in the absence of the self limiting agent at temperatures equal to or greater than 120 °C is provided.

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.

Antifoulant and process

The present disclosure provides a process. In an embodiment, the process includes introducing an antifoulant into an ethylene feed of a reactor system. The reactor system includes the ethylene feed, a hyper-compressor, a preheater and a polymerization reactor. The ethylene feed is located upstream of the hyper-compressor. The antifoulant consists of an inhibitor, molecular oxygen, and optionally a solvent. As the ethylene feed is located upstream of the hyper-compressor, the process includes introducing the antifoulant into the ethylene feed upstream of the hyper-compressor. The process further includes adding a free radical initiator to the polymerization reactor. The process further includes polymerizing the ethylene in the polymerization reactor under high pressure free-radical polymerization conditions, and forming an ethylene-based polymer.

Apparatus and method of use thereof

Disclosed herein is an apparatus comprising a shell; the shell having an inlet port for introducing a polymer solution into the shell and an outlet port for removing the polymer solution from the shell; wherein the polymer solution comprises a polymer and a solvent that is operative to dissolve the polymer; a plurality of plates in the shell; where the plurality of plates is stacked one atop the other to define a central passage that is in fluid communication with the inlet port of the shell; where the plurality of plates further defines a plurality of conduits, each conduit extending radially outwards from the central passage, where the plurality of conduits is in fluid communication with the central passage; and where the apparatus is operated at a pressure and a temperature effective to maintain the polymer solution in a single phase during its travel through the apparatus.

Improved process to make tubular ethylene based polymers with high g' and broad mwd

A process to form an ethylene-based polymer comprises polymerizing a reaction mixture comprising ethylene, at least one symmetrical polyene and at least one chain transfer agent system comprising at least one chain transfer agent (CTA) in the presence of at least one free-radical initiator and in a reactor configuration comprising at least two reaction zones, reaction zone 1 and reaction zone i ( i ≥ 2), wherein reaction zone i is downstream from reaction zone 1. The ratio of "the activity of the CTA system of the feed to the first reaction zone" to the "activity of the CTA system of the cumulative feed to the reaction zone i," (Z 1 /Z i ), is less than or equal to (0.8-0.2*log(Cs)), wherein Cs is from 0.0001 to 10.

Ethylene-based polymer composition with branching

The present disclosure provides an ethylene-based polymer. The ethylene-based polymer is formed from reacting, under polymerization conditions, ethylene monomer and bisallyl maleate ("BAIIM"). The present ethylene-based polymer with ethylene monomer and bisallyl maleate branching agent is interchangeably referred to as "BAIIM-PE."

ANTI-FULING AND PROCESS

ANTI-INCRUSTANTE E PROCESSO. A presente revelação fornece um processo. Em uma modalidade, o processo inclui introduzir um anti-incrustante a uma alimentação de etileno de um sistema de reator. O sistema de reator inclui a alimentação de etileno, um hipercompressor, um pré-aquecedor e um reator de polimerização. A alimentação de etileno está localizada a montante do hipercompressor. O anti-incrustante consiste em um inibidor, oxigênio molecular e, opcionalmente, um solvente. Como a alimentação de etileno está localizada a montante do hipercompressor, o processo inclui a introdução do anti-incrustante na alimentação de etileno a montante do hipercompressor. O processo inclui ainda adicionar iniciadores de radicais livres ao reator de polimerização. O processo inclui ainda polimerizar o etileno no reator de polimerização sob condições de polimerização de radicais livres de alta pressão e formar um polímero à base de etileno. ANTI-FALLING AND PROCESS. The present disclosure provides a process. In one embodiment, the process includes introducing an antifouling to an ethylene feed of a reactor system. The reactor system includes the ethylene feed, a hypercompressor, a preheater, and a polymerization reactor. The ethylene feed is located upstream of the hypercompressor. The antifouling consists of an inhibitor, molecular oxygen and, optionally, a solvent. As the ethylene feed is located upstream of the hypercompressor, the process includes introducing the antifouling into the ethylene feed upstream of the hypercompressor. The process further includes adding free radical initiators to the polymerization reactor. The process further includes polymerizing ethylene in the polymerization reactor under high pressure free radical polymerization conditions and forming an ethylene-based polymer.

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/cm 3 to 0.97 g/cm 3 , and ii) a melt index, I 2 , 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.

Self limiting catalyst composition for ethylene polymerization

A process for polymerizing ethylene to produce an ethylene -based polymer including contacting ethylene with a Ziegler-Natta procatalyst, an alkylaluminum cocatalyst and a self limiting agent selected from the group of aliphatic, cycloaliphatic, substituted cycloaliphatic or aromatic esters, anhydrides and amides such that the self limiting agent reduces polymerization rates to no greater than 40% of the polymerization rate in the absence of the self limiting agent at temperatures equal to or greater than 120 °C is provided.