NANO-COMPOSITE MATERIALS WITH SMALL PERMEABILITY

THERMOPLASTIC, DIAPHRAGMS FROM PROPYLENE COPOLYMERS, PROVIDED WITH FILLERS

COMPATIBILIZED TIRE TREAD COMPOSITIONS

A polyolefin-polybutadiene block-copolymer and a tire tread composition comprising the polyolefin-polybutadiene block-copolymer, the composition comprising, by weight of the composition, within the range from 15 to 60 wt% of a styrenic copolymer, processing oil, filler, a curative agent, and from 4 to 20 wt% of a polyolefin-polybutadiene block-copolymer, wherein the polyolefin-polybutadiene block-copolymer is a block copolymer having the general formula PO XL fPB; where "PO" is a polyolefin block having a weight average molecular weight within the range from 1000 to 150,000 g/mole, the "fPB" is a functionalized polar polybutadiene block having a weight average molecular weight within the range from 500 to 30,000 g/mole, and "XL" is a cross-linking moiety that covalently links the PO and fPB blocks; and wherein the maximum Energy Loss (Tangent Delta) of the immiscible polyolefin domain is a temperature within the range from -30°C to 10°C.

Polyethylene compositions comprising cyclic-olefin copolymers

A composite comprising a polyethylene and within a range from 1 wt % to 25 wt % of at least one cyclic-olefin copolymer by weight of the composition, where the polyethylene may have a density of at least 0.90 g/cm3, and where the cyclic-olefin copolymer has a glass transition temperature (Tg) of at least 30° C. Disclosed also is the feature of orienting the composite to form an oriented article, wherein the article comprises rods having an average length of at least 1 μm, and at least 5 nm in average diameter.

CHAIN END FUNCTIONALIZED POLYOLEFINS FOR IMPROVING WET TRACTION AND ROLLING RESISTANCE OF TIRE TREADS

A functionalized polyolefin and a tire tread composition comprising the functionalized polyolefin is described. The functionalized polyolefin comprises a vinyl/vinylidene-terminated polyolefin in which the vinyl/vinylidene terminus is functionalized with an alkoxysilane or an alkylsilane and optionally having ether, hydroxyl and/or amine functionality. The invention is also directed to the synthesis of vinyl/vinylidene-terminated polyolefins, functionalization at the vinyl/vinylidene terminus with an alkoxysilane or an alkylsilane and optionally having ether, hydroxyl and/or amine functionality.

COMPATIBILIZED TIRE TREAD COMPOSITIONS

A polyolefin-polybutadiene block-copolymer and a tire tread composition comprising the polyolefin-polybutadiene block-copolymer, the composition comprising, by weight of the composition, within the range from 15 to 60 wt% of a styrenic copolymer, processing oil, filler, a curative agent, and from 4 to 20 wt% of a polyolefin-polybutadiene block-copolymer, wherein the polyolefin-polybutadiene block-copolymer is a block copolymer having the general formula PO XL fPB; where "PO" is a polyolefin block having a weight average molecular weight within the range from 1000 to 150,000 g/mole, the "fPB" is a functionalized polar polybutadiene block having a weight average molecular weight within the range from 500 to 30,000 g/mole, and "XL" is a cross-linking moiety that covalently links the PO and fPB blocks; and wherein the maximum Energy Loss (Tangent Delta) of the immiscible polyolefin domain is a temperature within the range from -30°C to 10°C.

Halogenated isobutylene-based copolymers having enhanced viscosity and thermoplastic compositions thereof

The invention provides a method for increasing the viscosity of halogenated (brominated) elastomeric copolymers of a C₄ to C₇ isomonoolefin (isobutylene) and a para-alkylstryrene (p-methylstyrene) by mixing the copolymer with a silica or clay particulate filler which has been contacted with an aminosilane containing at least one C₁ to C₄ alkoxy group and at least one primary, secondary or tertiary amine group. The resulting elastomer compositions are used to prepare thermoplastic elastomer blend compositions, containing more finely dispersed elastomers which results in compositions having improved mechanical properties.

Toughened Polyolefin Nanocomposites Using Silane Functionalized Polyolefins

A method of forming a polyolefin-filler hybrid comprising combining vinyl/vinylidene-terminated polyolefin (VTP) and halosilane to form a silane functionalized polyolefin, followed by combining the silane functionalized polyolefin with a hydroxyl-containing filler, and/or combining the silane functionalized polyolefin with water and combining with hydroxyl-containing filler; to form a polyolefin-filler hybrid. 1. A method of forming a polyolefin-filler hybrid comprising: (i) combining the silane functionalized polyolefin with a hydroxyl-containing filler, and/or', '(ii) combining the silane functionalized polyolefin with water and combining with the hydroxyl-containing filler;, 'a) combining vinyl/vinylidene-terminated polyolefin (VTP) and halosilane to form a silane functionalized polyolefin, followed byb) recovering a polyolefin-filler hybrid.2. The method of claim 1 , wherein the vinyl/vinylidene-terminated polyolefin has a molecular weight distribution (Mw/Mn) of less than 4.0.3. The method of claim 1 , wherein the vinyl/vinylidene-terminated polyolefin has a weight average molecular weight (Mw) within the range from 3 claim 1 ,000 g/mole to 50 claim 1 ,000 g/mole.4. The method of claim 1 , wherein the polyolefin-filler hybrid has a grafting density within the range from 0.01 chain/nmto 0.16 chain/nm.5. The method of claim 1 , wherein the VTP and halosilane are combined with a vinylsiloxane/metal catalyst at a temperature of at least 90° C.6. The method of claim 5 , wherein after combining the catalyst claim 5 , additional halosilane is combined and maintained at a temperature of at least 90° C. for at least 5 hours.7. The method of claim 1 , wherein the combining of the hydroxyl-containing filler is also at a temperature of at least 90° C. for at least an additional 5 hours.8. The method of claim 1 , wherein the silane functionalized polyolefin is a silane functionalized polypropylene claim 1 , a polyethylene claim 1 , or an ethylene-propylene copolymer claim 1 ...

CHAIN END FUNCTIONALIZED POLYOLEFINS FOR IMPROVING WET TRACTION AND ROLLING RESISTANCE OF TIRE TREADS

A functionalized polyolefin and a tire tread composition comprising the functionalized polyolefin is described. The functionalized polyolefin comprises a vinyl/vinylidene-terminated polyolefin in which the vinyl/vinylidene terminus is functionalized with an alkoxysilane or an alkylsilane and optionally having ether, hydroxyl and/or amine functionality. The invention is also directed to the synthesis of vinyl/vinylidene-terminated polyolefins, functionalization at the vinyl/vinylidene terminus with an alkoxysilane or an alkylsilane and optionally having ether, hydroxyl and/or amine functionality.

低渗透性纳米复合材料

... 本发明包括卤化弹性体如丁基橡胶或在一个实施方案中是C#-[4]-C#-[7]异单烯烃，对-甲基苯乙烯和对-(卤代甲基苯乙烯)的互聚物与剥落化合物和粘土的共混物，该互聚物已经与剥落化合物和粘土预先混合。粘土可或可以不在与卤化弹性体共混之前进行另外的剥落处理。互聚物/粘土混合物在本发明的纳米复合材料共混物中形成不同的相。本发明的共混物具有改进的空气阻挡性能和适用作气体阻挡层。 ...

Scratch resistant layer for imaging elements

The present invention is an imaging element which includes a support and at least one imaging layer superposed on the support. The imaging layer includes a scratch resistant outermost layer either overlying the imaging layer or on the side opposite the imaging layer, and is composed of a ductile polymer having a modulus greater than 100 MPa measured at 20° C. and a tensile elongation to break greater than 50 percent, and a stiff filler having a modulus greater than 10 GPa at a volume concentration in the scratch resistant layer of 30 to 60%. The scratch resistant layer has a thickness of at least 0.5 mum.

DENDRITIC ETHYLENE POLYMERS AND PROCESSES FOR MAKING

Provided is a dendritic ethylene polymer. The polymer is a dendritic polymer of an ethylene/alpha-olefin-diene copolymer and a vinyl-terminated polyethylene. There is also provided a process for making a dendritic ethylene polymer. The process includes the steps of preparing a dendritic ethylene polymer by reacting ethylene/alpha-olefin-diene copolymer with vinyl-terminated polyethylene in the presence of a radical source. There is also provided a blend and a blown film that include the dendritic ethylene polymer. 1. A dendritic ethylene polymer comprising an ethylene/alpha-olefin-diene copolymer and a vinyl-terminated polyethylene.2. The polymer of claim 1 , wherein the ethylene/alpha-olefin-diene copolymer is EPDM.3. A process for making a dendritic ethylene polymer claim 1 , comprising: reacting an ethylene/alpha-olefin-diene copolymer with vinyl-terminated polyethylene in the presence of a radical source.4. The process of claim 3 , wherein the radical source is a peroxide.5. The process of claim 4 , wherein the peroxide is selected from the alkyl or aromatic peroxides that have 1-hour half life temperature greater than 70° C.6. The process of claim 5 , wherein the peroxide is dicumyl peroxide.7. The process of claim 3 , wherein the ethylene/alpha-olefin-diene copolymer is EPDM.8. The process of claim 3 , wherein the process is carried out in solution.9. The process of claim 8 , wherein the solution includes a high boiling solvent selected from decalin claim 8 , dichlorobenzene claim 8 , trichlorobenzene claim 8 , polyalpha olefins and combinations thereof10. The process of claim 3 , wherein the process is carried out in solid state.11. A polymer blend comprising a matrix ethylene polymer and 0.1 wt % to 10 wt % of the dendritic ethylene polymer based on the total weight of the blend claim 3 , wherein the dendritic ethylene polymer is a polymer comprising ethylene/alpha-olefin-diene copolymer and a vinyl-terminated polyethylene.12. The blend of claim 11 , wherein ...

FUNCTIONALIZED ELASTOMER NANOCOMPOSITE

Isobutylene-based elastomer blends

Chain end functionalized polyolefins for improving wet traction and rolling resistance of tire treads

A functionalized polyolefin and a tire tread composition comprising the functionalized polyolefin is described. The functionalized polyolefin comprises a vinyl/vinylidene-terminated polyolefin in which the vinyl/vinylidene terminus is functionalized with an alkoxysilane or an alkylsilane and optionally having ether, hydroxyl and/or amine functionality. The invention is also directed to the synthesis of vinyl/vinylidene-terminated polyolefins, functionalization at the vinyl/vinylidene terminus with an alkoxysilane or an alkylsilane and optionally having ether, hydroxyl and/or amine functionality.

Stable star-structured functional polyolefins

Stable star-structured functional polyolefins and methods of making them, the functional polyolefins comprising a polyolefin bound at any position along its chain length to at least one nucleophile-containing silane of the following formula: wherein Y is a di- or trivalent linker group selected from heteroatoms, C1 to C10 alkylenes, and other groups disclosed herein; Nu is a nucleophilic atom or unsaturation group; R5 is selected from hydrogen, and C1 to C10 alkyls, and other groups as disclosed herein; X is a divalent group selected from linear and branched alkylenes and heteroatom-alkylenes, and other groups as disclosed herein; and PO is a polyolefin having a weight average molecular weight of at least 400 g/mole; with the proviso that at least one of R1, R2, and R3 is selected from the same or different functional polyolefin moieties. Star-structured functional polyolefins are useful as filler dispersive additives in tire formulations and processing aids.

Comb-Block High Density Polyethylenes and Methods of Making Them

A process for preparing a polyethylene composition comprising contacting ethylene with a first salan catalyst precursor and an activator to form branched vinyl/vinylidene-terminated high density polyethylene having a number average molecular weight (Mn) of at least 5,000 g/mole; and contacting the branched vinyl/vinylidene-terminated high density polyethylene with ethylene and a second metallocene catalyst precursor and an activator to form a comb-block HDPE. The polyethylene composition comprises a polyethylene backbone, and one or more branched high density polyethylene combs pendant to the backbone, the combs having an Mn of at least 5,000 g/mole, where the polyethylene has a branching index (g′) of less than 0.9. 1. A process for making a polyethylene composition comprising:contacting, at a temperature of at least 100° C., ethylene with a first salan catalyst precursor and an activator to form branched vinyl/vinylidene-terminated high density polyethylene (“bVT-HDPE”) having a number average molecular weight (Mn) of at least 5,000 g/mole;contacting, at a temperature of at least 100° C., the bVT-HDPE with ethylene and a second metallocene catalyst precursor and an activator to form a comb-block HDPE; andisolating a polyethylene composition.2. The process of claim 1 , wherein the contacting steps take place is a solution polymerization process.3. The process of claim 1 , wherein the activator comprises a non-coordinating borate anion.4. The process of claim 3 , wherein the activator also comprises a bulky organic cation.5. The process of claim 1 , wherein the contacting steps occur in the same reactor.6. The process of claim 1 , wherein the first contacting step occurs in a first reactor claim 1 , and the second contacting step occurs in a second reactor in series with the first reactor.10. The process of claim 1 , wherein the polyethylene composition has a z-average molecular weight (Mz) of greater than 400 claim 1 ,000 g/mole.11. The process of claim 1 , wherein ...

Oriented thermoplastic vulcanizate

THERMOPLASTIC ELASTOMER COMPOSITIONS AND METHODS FOR MAKING THE SAME

The present invention provides a thermoplastic composition which may be unvulcanized or vulcanized. The thermoplastic composition can be a blend of a thermoplastic engineering resin, a halogenated terpolymer of a C4 to C7 isomonoolefin, a para-alkylstyrene, and a multiolefin. The engineering resin can be a polyamide, such as nylon 6/66 copolymers for example. The isomonoolefin can be an isobutylene for example. The multiolefin can be a C4 to C14 diene, such as isoprene for example.

Thermoplastic vulcanizate compositions

A thermoplastic vulcanizate comprises an isotactic polypropylene matrix phase in which cross-linked rubber particles are dispersed, the rubber particles comprising an ethylene-propylene-diene terpolymer (EPDM) containing at least 40 wt % of ethylene-derived units. A propylene-ethylene-diene terpolymer (PEDM) containing at least 60 wt % propylene-derived units and less than or equal to 25 wt % of ethylene-derived units and having a heat of fusion (H f ) of 2 to 10 J/g is added to compatibilize the propylene/EPDM blend.

Verfahren zur Steuerung nicht in Kontakt befindlicher Interferenzstreifen in fotografischen Filmen

FUNCTIONALIZED ELASTOMER NANOCOMPOSITE

Comb-block high density polyethylenes and methods of making them

A process for preparing a polyethylene composition comprising contacting ethylene with a first salan catalyst precursor and an activator to form branched vinyl/vinylidene-terminated high density polyethylene having a number average molecular weight (Mn) of at least 5,000 g/mole; and contacting the branched vinyl/vinylidene-terminated high density polyethylene with ethylene and a second metallocene catalyst precursor and an activator to form a comb-block HDPE. The polyethylene composition comprises a polyethylene backbone, and one or more branched high density polyethylene combs pendant to the backbone, the combs having an Mn of at least 5,000 g/mole, where the polyethylene has a branching index (g′) of less than 0.9.

Comb-block copolymers of isobutylene copolymer backbone with functional polymer comb arms

Comb-block copolymers of isobutylene copolymer backbone with functional comb arms, methods for making a comb-block copolymer comprising polymerizing one or more monomer components comprising units derived from at least one of acrylates, vinyl terminated C6 to C20 aromatics, acrylamides, and acrylonitrile using a halogenated copolymer initiator having a benzylic-halide moiety via atom transfer radical polymerization (ATRP) in the presence of a transition metal complex catalyst at a temperature ranging from 30° C. to 150° C., the use of these comb-block copolymers as a tire tread additive, as a nanofiller dispersant in elastomeric nanocomposite compositions comprising halobutyl rubber, as a surfactant, as a sealant, and as an additive in a latex formulation is disclosed.

Method for engagement cutting an imaging element

The present invention is a method of cutting an imaging element. An imaging element is moved through a cutting zone formed by a first cutting blade having a first cutting surface and a first engaging surface and a second cutting blade having a second cutting surface and a second engaging surface. In the cutting zone the first engaging surface and the second engaging surface are in contact for a distance greater than or equal to a thickness of the imaging element. The first cutting surface and said second cutting surface are separated by from 1 to 30 percent of the thickness of the imaging element in the cutting zone. The present invention reduces debris and skiving generation.

FUNKTIONALISIERTES ELASTOMER ENTHALTENDE NANOKOMPOSITZUSAMMENSETZUNG

Chain end functionalized polyolefins for improving wet traction and rolling resistance of tire treads

A functionalized polyolefin and a tire tread composition comprising the functionalized polyolefin is described. The functionalized polyolefin comprises a vinyl/vinylidene-terminated polyolefin in which the vinyl/vinylidene terminus is functionalized with an alkoxysilane or an alkylsilane and optionally having ether, hydroxyl and/or amine functionality. The invention is also directed to the synthesis of vinyl/vinylidene-terminated polyolefins, functionalization at the vinyl/vinylidene terminus with an alkoxysilane or an alkylsilane and optionally having ether, hydroxyl and/or amine functionality.

NANOVERBUNDWERKSTOFFE MIT GERINGER PERMEABILITÄT

Polymer blend compatibilization using isobutylene-based block copolymers

THERMOPLASTIC ELASTOMER COMPOSITIONS AND METHODS FOR MAKING THE SAME

The present invention provides a thermoplastic composition which may be unvulcanized or vulcanized. The thermoplastic composition can be a blend of a thermoplastic engineering resin, a halogenated terpolymer of a C4 to C7 isomonoolefin, a para-alkylstyrene, and a multiolefin. The engineering resin can be a polyamide, such as nylon 6/66 copolymers for example. The isomonoolefin can be an isobutylene for example. The multiolefin can be a C4 to C14 diene, such as isoprene for example.

Compatibilized tire tread compositions

A polyolefin-polybutadiene block-copolymer and a tire tread composition comprising the polyolefin-polybutadiene block-copolymer, the composition comprising, by weight of the composition, within the range from 15 to 60 wt % of a styrenic copolymer, processing oil, filler, a curative agent, and from 4 to 20 wt % of a polyolefin-polybutadiene block-copolymer, wherein the polyolefin-polybutadiene block-copolymer is a block copolymer having the general formula PO-XL-fPB; where “PO” is a polyolefin block having a weight average molecular weight within the range from 1000 to 150,000 g/mole, the “fPB” is a functionalized polar polybutadiene block having a weight average molecular weight within the range from 500 to 30,000 g/mole, and “XL” is a cross-linking moiety that covalently links the PO and fPB blocks; and wherein the maximum Energy Loss (Tangent Delta) of the immiscible polyolefin domain is a temperature within the range from −30° C. to 10° C.

Low Ethylene Amorphous Propylene-Ethylene-Diene Terpolymer Compositions

A propylene-ethylene-diene terpolymer and method of making such comprising from 2% to 25% wt % by weight of ethylene, from 98% to 75% wt % by weight propylene and from 1% to 21% wt % by weight of a diene, wherein the terpolymer has a crystallinity of less than 3%, a melt flow rate (MFR) of less than 10 and a Tg by DSC of from −2° C. to −25° C. and methods to prepare the terpolymer are depicted. 1. A propylene-ethylene-diene terpolymer comprising from 2% to 25% by weight of ethylene , from 98% to 75% by weight propylene and from 1% to 21% by weight of a diene , wherein the terpolymer has a crystallinity of less than 3% , a melt flow rate (MFR) of less than 10 g/10 min , and a Tg by DSC of from −2° C. to −25° C.2. The propylene-ethylene-diene terpolymer of claim 1 , wherein the percentage ethylene is from 4 percent to 20 percent.3. The propylene-ethylene-diene terpolymer of claim 1 , wherein the percentage propylene is from 80 percent to 96 percent.4. The propylene-ethylene-diene terpolymer of wherein the diene comprises 5-ethylidene-2-norbornene (ENB) claim 1 , 1 claim 1 ,4-hexadiene; 5-methylene-2-norbornene (MNB) claim 1 , 1 claim 1 ,6-octadiene claim 1 , 5-methyl-1 claim 1 ,4-hexadiene claim 1 , 3 claim 1 ,7-dimethyl-1 claim 1 ,6-octadiene claim 1 , 1 claim 1 ,3-cyclopentadiene claim 1 , 1 claim 1 ,4-cyclohexadiene claim 1 , vinyl norbornene (VNB) or mixtures thereof.5. The propylene-ethylene-diene terpolymer of claim 4 , wherein the diene is 5-ethylidene-2-norbornene.6. The propylene-ethylene-diene terpolymer of claim 1 , wherein the Tg is from −4° C. to −25° C.7. The propylene-ethylene-diene terpolymer of claim 1 , wherein the MFR is from 0.1 to 5 g/10 min.8. The propylene-ethylene-diene terpolymer of claim 1 , wherein the crystallinity is less than 2%.9. The propylene-ethylene-diene terpolymer of claim 8 , wherein the crystallinity is less than 1%.10. A tire tread composition comprising components claim 8 , by weight of the composition claim 8 , within the ...

Halogenated elastomeric compositions having enhanced viscosity

Low permeability nanocomposites

Thermoplastic filled membranes of propylene copolymers

POLYPROPYLENE COMPOSITIONS AND METHODS TO PRODUCE THE SAME

Compositions comprising a continuous phase of at least one polypropylene; within the range of from 5 wt % to 50 wt % of a mineral hydroxide filler by weight of the composition, having an aspect ratio within the range of from 5 or 6 or 8 to 20 or 40 or 100 or 200 or 800 or 1000; and within the range of from 5 wt % to 40 wt % of a olefin block-containing copolymer by weight of the composition. Also described is a method of forming the compositions comprising combining the components as “masterbatches” or as neat ingredients, or some combination thereof. 1. The method of claim 15 , wherein the composition comprises a continuous phase of polypropylene;within the range of from 5 wt % to 50 wt % of a mineral hydroxide filler by weight of the composition, the mineral hydroxide filler having an aspect ratio within the range of from 5 to 1000; andwithin the range of from 5 wt % to 40 wt % of a olefin block-containing copolymer by weight of the compositionwherein the polypropylene is present within a range from 10 wt % to 29.5 wt % by weight of the composition,{'sup': '2', 'wherein the composition has a 1% Secant Flexural Modulus (ISO) of greater than 2000 MPa and a Notched Izod Impact Resistance (−29 ° C., ISO) of greater than 5 kJ/m, wherein polar-graft polymers are absent and the filler excludes silicate fillers.'}2. The method of claim 1 , wherein the mineral hydroxide filler is a metal salt of an oxysulfate claim 1 , aluminoxysulfate claim 1 , aluminosilicate claim 1 , silicate claim 1 , borate claim 1 , or combination thereof.3. The method of claim 16 , wherein the olefin block-containing copolymer is selected from the group consisting of styrene-butadiene-styrene block copolymers claim 16 , styrene-isoprene-styrene block copolymers claim 16 , styrene-ethylene/propylene-styrene block polymers claim 16 , styrene-ethylene/butene/styrene block polymers claim 16 , and hydrogenated versions thereof and blends thereof.4. The composition method of claim 16 , wherein the olefin ...

Thermoplastic filled membranes of propylene copolymers

Regelung von kontaktlosen Interferenzstreifen in fotographischen Filmen

Thermoplastic elastomer composition having viscosity-enhanced and vulcanized elastomer dispersions

A thermoplastic elastomer composition having improved mechanical properties and fatigue resistance comprising (A) a halogenated isobutylene elastomer, (B) polyamide and (C) an amine component selected from tertiary amines and secondary diamines, wherein the elastomers are dispersed as a domain in a continuous phase of the polyamide.

Films of propylene copolymers

The invention provides for a film including a layer made from a composition, the composition produced from 30 percent by weight or more of a first polymer component (FPC), wherein said FPC includes a copolymer of propylene and from 6 to 30 percent by weight of another alpha-olefin, and having a melting point derived from stereoregular polypropylene sequences, as determined by differential scanning calorimetry (DSC) of 105° C. or less, and a heat of fusion of 45 J/g or less; and a second polymer component (SPC); wherein the SPC includes a thermoplastic polymer other than the FPC.

ELASTIC BLENDS COMPRISING ELASTIC CRYSTALLINE POLYMER AND CRYSTALLIZABLE POLYMERS FOR ETHYLENE

Block Copolymers of Polyacrylates and Polyolefins

A polyacrylate-polyolefin block copolymer and composition for volatile solvent-free coating comprising such compounds having the following structure: 3. The polyacrylate-polyolefin block copolymer of claim 2 , wherein R is a hydroxy or methyloxy claim 2 , or a combination thereof claim 2 , and R′ is a hydrogen or methyl claim 2 , or combinations thereof.4. The polyacrylate-polyolefin block copolymer of claim 1 , wherein PO is selected from the group consisting of ethylene homopolymer claim 1 , copolymer of ethylene with one or more linear alpha olefins claim 1 , propylene homopolymer claim 1 , copolymer of propylene with one or more linear alpha olefins claim 1 , isobutylene homopolymer claim 1 , isobutylene copolymer with one or more conjugated dienes claim 1 , and combinations thereof.5. The polyacrylate-polyolefin block copolymer of claim 1 , wherein PO is an isotactic or atactic polypropylene having a number average molecular weight within the range from 300 g/mole to 100 claim 1 ,000 g/mole.6. The polyacrylate-polyolefin block copolymer of claim 1 , having a branching claim 1 , g′(MALLS/3D) of less than 0.90.6. The polyacrylate-polyolefin block copolymer of claim 1 , having a weight average molecular weight (MALLS/3D) within a range from 50 claim 1 ,000 g/mole to 3 claim 1 ,000 claim 1 ,000 g/mole.8. The polyacrylate-polyolefin block copolymer of claim 1 , having a MWD (weight average molecular weight/number average molecular weight) within the range from 1.1 to 10.9. The polyacrylate-polyolefin block copolymer of claim 1 , wherein the block copolymer comprises a comb structure.10. A coating composition comprising the polyacrylate-polyolefin block copolymer of .11. The coating composition of claim 10 , wherein volatile organic compounds are substantially absent.14. The method of claim 12 , wherein PO is selected from the group consisting of ethylene homopolymer claim 12 , copolymer of ethylene with one or more linear alpha olefins claim 12 , propylene ...

Alternating Crystalline-amorphous Multiblock Copolymer Compositions and Methods of Production Thereof

Alternating crystalline-amorphous polyolefin based multiblock copolymer compositions and methods for producing these multiblock copolymer compositions are disclosed. Also disclosed is the use of these multiblock copolymer compositions as additives to high density polyethylene (HDPE) resins in order to form polymer blends having improved ductility and toughness over that of the HDPE resins while retaining high mechanical strength, and the use of these polymer blends in films. 1. An alternating crystalline-amorphous multiblock copolymer comprising:one or more blocks of a crystalline high density polyethylene (HDPE) A and one or more blocks of an amorphous polyolefin B,{'sub': 3', '10, 'wherein polyolefin A comprises ethylene and polyolefin B comprises ethylene and a Cto Calpha-olefin,'}and wherein at least 90% of crystallites in the multiblock copolymer have a thickness of 15 nm or less.2. The multiblock copolymer of claim 1 , wherein polyolefin A comprises units derived from cyclooctene claim 1 , and wherein polyolefin B comprises units derived from butadiene.3. The multiblock copolymer of claim 1 , wherein the HDPE block has a melt index ranging from 0.10 g/10 min to 45 g/10 min claim 1 , as measured in accordance with ASTM-131238 condition E.4. The multiblock copolymer of claim 3 , wherein polyolefin A has an ethylene content of greater than 99 mol % based on the total moles of the monomers of polyolefin A.5. The multiblock copolymer of claim 1 , wherein polyolefin B has a degree of crystallinity of less than 10%.6. The multiblock copolymer of claim 1 , wherein the alpha-olefin of polyolefin B is 1-butene.7. The multiblock copolymer of claim 1 , wherein polyolefin B has an ethylene content ranging from 30 mol % to 70 mol % based on the total moles of the monomers of polyolefin B.8. The multiblock copolymer of claim 1 , wherein the one or more blocks of polyolefin A form 5 wt % to 90 wt % of the multiblock copolymer.9. The multiblock copolymer of claim 1 ,wherein ...

PREPARATION OF BIMODAL RUBBER, THERMOPLASTIC VULCANIZATES, AND ARTICLES MADE THEREFROM

Pellet-stable olefinic copolymer bimodal rubber is made using parallel reactors, with one reactor synthesizing higher molecular weight (MW) rubber with dual catalysts, with an improved molecular weight split ratio and an improved composition distribution of the moderate and ultra-high MW components, while another reactor synthesizes random isotactic polypropylene copolymer (RCP). The effluents are reactor-blended and result in pellet-stable bimodal rubber (P-SBR), which may be pelletized. When making thermoplastic vulcanizates (TPVs) with P-SBR, the need to granulate rubber bales and subsequently use talc, clay, or other anti-agglomeration agents to prevent granulated rubber crumbs from agglomerating are eliminated. TPVs made with P-SBR have vulcanized rubber particles that are smaller and more uniform in size, resulting in TPVs with higher particle counts and more thermoplastic “ligaments” between the particles, with such ligaments being made stronger by the added RCP. Such thus-produced TPVs have a lower hysteresis and flexural modulus, and better elastic properties. 1. A method of preparing a pellet-stable olefinic copolymer bimodal rubber , comprising:producing a high molecular weight olefinic copolymer rubber characterized by a bimodal molecular weight and a bimodal composition distribution (“bimodal rubber”) within a first reactor;concurrently producing isotactic polypropylene random copolymer (RCP) within a second reactor, wherein the first and second reactors are operated in parallel to each other;obtaining an effluent from the first reactor;obtaining an effluent from the second reactor;reactor-blending the effluents in situ to thereby produce a pellet-stable RCP-containing bimodal rubber (“pellet-stable bimodal rubber”), wherein about 80-97.5 wt % of the bimodal rubber is blended with about 2.5-20 wt % of the RCP, and optionally pelletizing the pellet-stable rubber.3. The method of claim 2 , wherein the catalyst compound further comprises one or more of:{' ...

Oriented thermoplastic vulcanizate

Oriented films are prepared. A thermoplastic vulcanizate, prepared by mixing at least 20 wt % of a thermoset rubber by weight of the total composition into a thermoplastic polymer are disclosed. After the mixture is prepared the thermoset rubber is entrained as discrete particles within the continuous thermoplastic polymer phase. The resulting composite is subjected to a stress either by pulling, blow molding, or any other film-forming process as is known in the art. This stress causes the continuous phase polymer molecules to become aligned or oriented in the direction in which the stress was applied, thus creating the oriented thermoplastic vulcanizate of the invention. This material has improved gas permeability and improved flexibility properties.

NANOVERBUNDWERKSTOFFE MIT GERINGER PERMEABILITÄT

Stable star-structured functional polyolefins

Stable star-structured functional polyolefins and methods of making them, the functional polyolefins comprising a polyolefin bound at any position along its chain length to at least one nucleophile-containing silane of the following formula:wherein Y is a di- or trivalent linker group selected from heteroatoms, C1 to C10 alkylenes, and other groups disclosed herein; Nu is a nucleophilic atom or unsaturation group; R5 is selected from hydrogen, and C1 to C10 alkyls, and other groups as disclosed herein; X is a divalent group selected from linear and branched alkylenes and heteroatom-alkylenes, and other groups as disclosed herein; and PO is a polyolefin having a weight average molecular weight of at least 400 g/mole; with the proviso that at least one of R1, R2, and R3 is selected from the same or different functional polyolefin moieties. Star-structured functional polyolefins are useful as filler dispersive additives in tire formulations and processing aids.

Propylene-alpha olefin copolymers and methods for making the same

Provided is a composition having 60 wt % to 95 wt % of a first propylene alpha-olefin copolymer component having a reactivity ratio product of less than 0.75 and a weight average molecular weight of greater than about 450,000 g/mol; and 5 wt % to 40 wt % of a second propylene alpha-olefin copolymer component having a reactivity ratio of greater than 1.5 and a weight average molecular weight of less than about 215,000 g/mol.

Graft Copolymers for Dispersing Graphene and Graphite

Disclosed herein are graft copolymer nanofiller dispersants comprising a polyaromatic hydrocarbon backbone and polyaliphatic hydrocarbon comb arms and methods for making same. Also disclosed are elastomeric nanocomposite compositions comprising a halobutyl rubber matrix nanoparticles of graphite or graphene, and the graft copolymer nanofiller dispersant. Such elastomeric nanocomposite compositions are useful tire innerliners or innertubes.

NONCONTACT INTERFERENCE FRINGE CONTROL SYSTEM FOR PHOTOGRAPHIC FILM

PROBLEM TO BE SOLVED: To provide a photography optical system for substantially eliminating the noncontact interference fringe of a photographic film, ensuring low cost and a high economic effect. SOLUTION: This system has (a) a polarized electromagnetic radiation light source with the radiation thereof characteristic in respect of wavelength and an incident polarized light angle, and (b) a photographic film 200 optically combined with the light source and formed to transmit or reflect a part of a radiation A, and have a silver halide emulsion layer 201 on a multi-refraction supporting body 202 having a multi-refraction factor characteristic in respect of dependence on thickness, an emulsion layer boundary 204, an air boundary layer 205 and the wavelength of the radiation A. In this case, the radiation wavelength, the incident polarized light angle, the thickness of the supporting body 202 and the multi-refraction factor are selected so that a radiation B reflected from the air boundary ...

Thermoplastic Vulcanizates and Compositions Therefrom

Disclosed is the preparation of thermoplastic vulcanizates with reduced crosslinked rubber dispersion sizes and dispersity. The thermoplastic vulcanizates include a polypropylene matrix phase in which cross-linked rubber particles are dispersed. The thermoplastic vulcanizates include the reaction product of a mixture that includes at least 10 wt % of isotactic polypropylene at least 30 wt % of an amorphous propylene-ethylene-diene terpolymer containing at least 60 wt % propylene-derived units and less than or equal to 25 wt % of ethylene-derived units; at least 10 wt % of a diluent and at least 0.015 wt % of at least one curative. The mixture is preferably formed without adding an ethylene-propylene-diene terpolymer. 1. A thermoplastic vulcanizate comprising a polypropylene matrix phase in which cross-linked rubber particles are dispersed , the thermoplastic vulcanizate comprising the reaction product of a mixture comprising:(a) at least 10 wt % of isotactic polypropylene;(b) at least 30 wt % of a propylene-ethylene-diene terpolymer (PEDM) rubber containing at least 60 wt % propylene-derived units and less than or equal to 25 wt % of ethylene-derived units, where the PEDM is amorphous; and(c) at least 0.015 wt % of at least one curative, wherein the mixture is formed without adding an ethylene-propylene-diene terpolymer (EPDM) rubber, and the percentages of components (a) to (c) are based on the total weight of the mixture.2. The thermoplastic vulcanizate of claim 1 , wherein the PEDM comprises 5 to 18 wt % of ethylene-derived units.3. The thermoplastic vulcanizate of claim 1 , wherein the PEDM comprises 0.3 to 10 wt % of diene-derived units; where the diene is selected from the group consisting of 5-ethylidene-2-norbornene claim 1 , 5-vinyl-2-norbornene claim 1 , divinyl benzene claim 1 , and dicyclopentadiene.4. The thermoplastic vulcanizate of claim 1 , wherein the PEDM has a viscosity from 10 to 90 MST (5+4) at 230° C.5. The thermoplastic vulcanizate of claim 1 ...

Bimodal Ethylene, Alpha-Olefin, and Diene Polymers Using Dual Organometallic Catalysts

The present disclosure provides catalyst systems having a bridged metallocene compound and a transition metal pyridyldiamide compound for use in alkene polymerization to produce multimodal polyolefins, such as multimodal ethylene, propylene, diene monomer copolymers. In some embodiments, the present disclosure provides for polyolefins and processes for producing a polyolefin composition including contacting at least one olefin with a catalyst system of the present disclosure. 2. The catalyst system of claim 1 , wherein the aromatic fused-ring substituted cyclopentadienyl ligand is a substituted or unsubstituted fluorenyl ligand.3. The catalyst system of claim 2 , wherein the bridge group of the bridged biscyclopentadienyl compound is a substituted or unsubstituted carbon atom.4. The catalyst system of claim 3 , wherein the bridged atom is substituted with at least one aryl group.5. The catalyst system of claim 4 , wherein the bridged biscyclopentadienyl compound is at least one of:diphenyl methylene (cyclopentadienyl)(9-fluorenyl)hafnium dimethyl,diphenyl methylene (cyclopentadienyl)(2,7-dimethyl-9-fluorenyl)hafnium dimethyl,diphenyl methylene (cyclopentadienyl)(2,7-di-tert-butyl-9-fluorenyl)hafnium dimethyl,di(p-trimethylsilyl-phenyl)methylene(cyclopentadienyl)(fluorenyl)hafnium dimethyl,di(p-trimethylsilyl-phenyl)methylene (cyclopentadienyl)(2,7-dimethyl-9-fluorenyl)hafnium dimethyl,di(p-trimethylsilyl-phenyl)methylene(cyclopentadienyl)(2,7-di-tert-butyl-9-fluorenyl)hafnium dimethyl,di(p-triethylsilyl-phenyl)methylene(cyclopentadienyl)(fluorenyl)hafnium dimethyl,di(p-triethylsilyl-phenyl)methylene(cyclopentadienyl)(2,7-dimethyl-9-fluorenyl)hafnium dimethyl,di(p-triethylsilyl-phenyl)methylene (cyclopentadienyl)(2,7-di-tert-butyl-9-fluorenyl)hafnium dimethyl,(p-triethylsilyl-phenyl)(p-tert-butylphenyl)methylene(cyclopentadienyl)(fluorenyl)hafnium dimethyl,(p-triethylsilyl-phenyl))(p-n-butylphenyl)methylene(cyclopentadienyl)(2,7-dimethyl-9-fluorenyl)hafnium dimethyl ...

Comb-Star Viscosity Modifier and Its Compositions

Described herein is a comb-star poly(siloxane-polyolefin) comprising the reaction product of at least vinyl-terminated macromer and functional-poly(dialkylsiloxanes) comprising 2 or more functional groups, wherein the comb-star poly(siloxane-polyolefin) has the following features: a g′of less than 0.80; a comb number of 2 or 3 or 4 to 30 or 40 or 50 or 100 or more; and a number average molecular weight (Mn) within the range of from 25,000 g/mole to 500,000 g/mole. 3. The comb-star poly(siloxane-polyolefin) of claim 1 , wherein n is within the range from 2 to 10.4. The comb-star poly(siloxane-polyolefin) of claim 3 , wherein X is hydride or a mercaptan selected from the group consisting of methyl claim 3 , ethyl claim 3 , propyl and butyl mercaptans.5. The comb-star poly(siloxane-polyolefin) of claim 1 , wherein the residual functional groups on the silicon atoms claim 1 , preferably silanes claim 1 , is less than 1 mole % claim 1 , preferably less than 0.5 mole % claim 1 , most preferably less than 0.1 mole % relative to the original functional-poly(dialkylsiloxanes).6. The comb-star poly(siloxane-polyolefin) of claim 1 , wherein the number average molecular weight (Mn) of the functional-poly(dialkylsiloxane) is within the range from 500 g/mole to 50 claim 1 ,000 g/mole.7. The comb-star poly(siloxane-polyolefin) of claim 1 , wherein the comb-star poly(siloxane-polyolefin) has a g′of less than 0.70.8. The comb-star poly(siloxane-polyolefin) of claim 1 , wherein the comb-star poly(siloxane-polyolefin) has a weight average molecular weight (Mw) to number average molecular weight (Mn) ratio (Mw/Mn) within the range from 2.0 to 6.0.9. The comb-star poly(siloxane-polyolefin) of claim 1 , wherein the comb-star poly(siloxane-polyolefin) is additionally the reaction product of a Cto Calkene.10. The comb-star poly(siloxane-polyolefin) of claim 1 , wherein the glass transition temperature (Tg) of the vinyl-terminated macromer is preferably less than 0° C.12. The comb-star poly ...

Polymer blend compatibilization using isobutylene-based block copolymers II

Compatibilized blends of an isoolefin polymer and an unsaturated diene polymer are prepared by utilizing a compatibilizing agent comprising a block/graft copolymer containing poly- or copoly-isoolefin segments and C₄ to C₆ alkyl-substituted styrene polymer segments, such as poly(t-butylstyrene) segments.

MULTI-ARM STAR ETHYLENE POLYMERS AND PROCESS FOR MAKING

Provided is a multi-arm (greater than 3 arms) star ethylene polymer (sEP). The multi-arm star ethylene polymer is a polymer of an ethylene/maleic anhydride copolymer (EMAC) grafted with vinyl-terminated polyethylene. There are also provided a process for making the sEP and blend of a matrix ethylene polymer and the sEP. 1. A multi-arm star ethylene polymer , comprising an ethylene/maleic anhydride copolymer grafted with vinyl-terminated polyethylene , wherein the multi-arm star ethylene polymer includes three or more arms.2. The polymer of claim 1 , wherein the ethylene/maleic anhydride copolymer includes an ethylene monomeric content of 80 wt % to 99 wt % and a maleic anhydride monomeric content of 0.25 to 20 wt % based on the total weight of the ethylene/maleic anhydride copolymer.3. The polymer of claim 2 , wherein the ethylene monomeric content is 85 wt % to 98.5 wt % based on the total weight of the ethylene/maleic anhydride copolymer.4. The polymer of claim 3 , wherein the ethylene monomeric content is 90 wt % to 98 wt % based on the total weight of the ethylene/maleic anhydride copolymer.5. The polymer of claim 2 , wherein the maleic anhydride monomeric content is 0.5 wt % to 15 wt % based on the total weight of the ethylene/maleic anhydride copolymer.6. The polymer of claim 5 , wherein the maleic anhydride monomeric content is 1 wt % to 10 wt % based on the total weight of the ethylene/maleic anhydride copolymer.7. A process for making a multi-arm star ethylene polymer claim 5 , comprising: grafting vinyl-terminated polyethylene to an ethylene/maleic anhydride copolymer in solid state to form greater than three arms in the presence of a radical source.8. The process of claim 7 , wherein the radical source is a peroxide.9. The process of claim 8 , wherein the peroxide is selected from the alkyl or aromatic peroxides that have 1-hour half life temperature greater than 70° C.10. The process of claim 9 , wherein the peroxide is dicumyl peroxide.11. The process ...

Low ethylene amorphous propylene-ethylene-diene terpolymer compositions

A propylene-ethylene-diene terpolymer and method of making such comprising from 2% to 25% wt % by weight of ethylene, from 98% to 75% wt % by weight propylene and from 1% to 21% wt % by weight of a diene, wherein the terpolymer has a crystallinity of less than 3%, a melt flow rate (MFR) of less than 10 and a Tg by DSC of from −2° C. to −25° C. and methods to prepare the terpolymer are depicted.

Thermoplastic elastomer compositions and methods for making the same

Compositions of Isobutylene, Styrene and Styrene with Graft-On Pendant Double Bonds

A composition and methods for making the same. The composition includes an isoolefin having from 4 to 7 carbons, a first styrene, and a second styrene alkylated with a diene to have a pendant double bond. A copolymer having units derived from an isoolefin having from 4 to 7 carbons and an alkylstyrene can be reacted with a diene to provide the composition. The reaction of the copolymer with the diene can be reacted in the presence of a catalyst at a temperature of about 80° C. to about 200° C. 1. A composition comprising:an isoolefin having from 4 to 7 carbons;a first styrene; anda second styrene alkylated with a diene to have a pendant double bond.2. A composition comprising the reaction product of:a copolymer of an isoolefin having from 4 to 7 carbons and a first styrene; anda diene.3. A polymer comprising:a copolymer of an isoolefin having from 4 to 7 carbons and a first styrene grafted to a diene.4. The composition of claim 1 , wherein the diene is conjugated.5. The composition of claim 1 , wherein the diene is 2-methyl-1 claim 1 ,3-butadiene (isoprene) claim 1 , 1 claim 1 ,3-butadiene claim 1 , 1 claim 1 ,3-pentadiene (piperylene) claim 1 , or a combination thereof.6. The composition of claim 1 , wherein the diene is unconjugated and cyclic.7. The composition of claim 6 , wherein the diene is ethylidene norbornene claim 6 , vinyl norbornene claim 6 , dicyclopentadiene claim 6 , norbornadiene claim 6 , 1 claim 6 ,5 cyclooctadiene claim 6 , or a combination thereof.8. The composition of claim 1 , wherein the diene is unconjugated and non-cyclic.9. The composition of claim 8 , wherein the diene is 1 claim 8 ,4 hexadiene claim 8 , 1 claim 8 ,6 octadiene claim 8 , 1 claim 8 ,8 decadiene claim 8 , or a combination thereof.10. The composition of claim 1 , wherein the double bond is at one carbon away from the terminal carbon of the pendant double bond.11. The composition of claim 1 , wherein the first styrene is 0.5 mole % to 40 mole % of the composition based on the ...

Compatibilized thermoplastic vulcanizate compositions

Disclosed is the preparation of compatibilized thermoplastic vulcanizates with reduced crosslinked rubber dispersion sizes and dispersity. A cross-linkable ethylene-propylene-diene terpolymer with majority propylene (PEDM) is used to compatibilize a plastic and rubber blend of a polypropylene (PP) and an ethylene-propylene-diene terpolymer rubber, where the propylene content is less than 50 wt % (EPDM), in dynamic vulcanization and preparation of PP/EPDM thermoplastic vulcanizates. The resulting PP/EPDM thermoplastic vulcanizates typically exhibit a weight average equivalent dispersion diameter of less than 3 microns and a particle size polydispersity index (PSDI), or weight average over number average dispersion diameter, of less than 5. This reduction in crosslinked rubber dispersion size in a PP/EPDM TPV by using PEDM compatibilizers enhances the toughness of the vulcanizate product by raising both elongation to break and break stress.

Thermoplastic filled membranes of propylene copolymers

The invention relates to a thermoplastic membrane (e.g. film, fluid barrier, and the like) which is formed from a blend of: a) a first polymer component (FPC), wherein said FPC comprises a propylene-ethylene copolymer containing from 80 to 93 percent by weight of units derived from propylene, and having a melting point derived from stereoregular polypropylene sequences, as determined by differential scanning calorimetry (DSC), in the range of from 25° C. to 70° C., and a heat of fusion of from 2 J/g to 25 J/g; b) an inorganic filler; c) a processing oil, and d) optionally, a second polymer component (SPC), wherein said SPC is a stereoregular polypropylene containing less than 7 percent by weight of units derived from ethylene or alpha-olefin monomer containing from 4 to 8 carbon atoms and having melting point, as determined by DSC, greater than 130° C., and a heat of fusion greater than 80 J/g.

Stable Star-Structured Functional Polyolefins

Stable star-structured functional polyolefins and methods of making them, the functional polyolefins comprising a polyolefin bound at any position along its chain length to at least one nucleophile-containing silane of the following formula: 2. The functional polyolefin of claim 1 , wherein the sum of m and n is selected from 0 claim 1 , 1 claim 1 , or 2.3. The functional polyolefin of claim 1 , wherein the sum of m and n is selected from 1 or 2.4. The functional polyolefin of claim 1 , wherein each R9 is hydrogen claim 1 , wherein each R10 is hydrogen claim 1 , wherein each R11 is hydrogen claim 1 , and wherein each R12 is hydrogen.5. The functional polyolefin of claim 1 , wherein R7 and R8 are each methyl groups.6. The functional polyolefin of claim 1 , wherein R5 is selected from C1 to C10 alkyls and C1 to C10 aminoalkyls.7. The functional polyolefin of claim 1 , wherein the at least one polyolefin comprising at least one nucleophile-reactive group or unsaturation is selected from the group consisting of polybutadienes claim 1 , polyisoprenes claim 1 , isobutylene-isoprene copolymer claim 1 , halogenated isobutylene-isoprene copolymer claim 1 , isobutylene-p-methylstyrene copolymer claim 1 , halogenated isobutylene-p-methylstyrene copolymer claim 1 , ethylene-propylene-diene terpolymers claim 1 , vinyl/vinylidene-terminated polypropylenes claim 1 , vinyl/vinylidene-terminated polyethylenes claim 1 , and vinyl/vinylidene-terminated ethylene-propylene copolymers.8. The functional polyolefin of claim 7 , wherein the at least one polyolefin comprising at least one nucleophile-reactive group or unsaturation is selected from the group consisting of polybutadienes claim 7 , polyisoprenes claim 7 , and isobutylene-isoprene copolymer.9. The functional polyolefin of claim 1 , wherein the functional polyolefin has a branching number of 7 or below.10. A tire tread formulation comprising the functional polyolefin of .12. The method of claim 11 , wherein the sum of m and n is ...

Functionalized elastomer nanocomposite

An embodiment of the present invention is a nanocomposite comprising a clay and an elastomer comprising at least C₂ to C₁₀ olefin derived units; wherein the elastomer also comprises functionalized monomer units pendant to the elastomer. Desirable embodiments of the elastomer include poly(isobutylene-co-p-alkylstyrene) elastomers and poly(isobutylene-co-isoprene) elastomers, which are functionalized by reacting free radical generating agents and unsaturated carboxylic acids, unsaturated esters, unsaturated imides, and the like, with the elastomer. The clay is exfoliated in one embodiment by the addition of exfoliating agents such as alkyl amines and silanes to the clay. The composition can include secondary rubbers such as general purpose rubbers, and curatives, fillers, and the like. The nanocomposites of the invention have improved air barrier properties such as are useful for tire innerliners and innertubes.

ELASTOMERIC PROPYLENE-ALPHA-OLEFIN-DIENE TERPOLYMER COMPOSITIONS

A propylene-α-olefin-diene (PEDM) terpolymer may comprise 75 to 95 wt % propylene, 5 to 20 wt % α-olefin, and 0.5 to 5 wt % diene, said wt % based on the weight of the PEDM terpolymer. The propylene-α-olefin-diene terpolymer may be blended with an ethylene-based copolymer and optionally a variety of additives to form an elastomeric composition. An exemplary elastomeric composition includes 5 to 40 parts by weight per hundred parts by weight rubber (phr) of the PEDM terpolymer, 60 to 95 phr of the ethylene-based copolymer, and optionally additives like carbon black, zinc dimethacrylate, paraffinic oil, zinc oxide, and/or zinc stearate. 1. An elastomeric composition comprising:from 5 to 40 parts by weight per hundred parts by weight rubber (phr) of a propylene-α-olefin-diene (PEDM) terpolymer comprising 75 to 95 wt % propylene, 5 to 20 wt % α-olefin, and 0.5 to 5 wt % diene, said wt % based on the weight of the PEDM terpolymer; and{'sub': 3', '12, 'from 60 to 95 phr of an ethylene-based copolymer comprising ethylene, one or more Cto Cα-olefins, and, optionally, one or more dienes; wherein an ethylene content of the ethylene-based copolymer (in wt % on the basis of total weight of the ethylene-based copolymer) is different from an ethylene content of the PEDM terpolymer (in wt % on the basis of total weight of the PEDM terpolymer).'}2. The composition of claim 1 , wherein the PEDM comprises two or more propylene-based copolymers.3. The composition of claim 1 , wherein the ethylene-based copolymer comprises two or more ethylene-based copolymers.4. The composition of claim 1 , wherein the PEDM comprises two or more propylene-based copolymers and the ethylene-based copolymer comprises two or more ethylene-based copolymers.5. The composition of claim 1 , wherein the PEDM is formed by polymerizing the propylene claim 1 , the ethylene claim 1 , and the diene in the presence of a catalyst compound represented by formula (I):{'br': None, 'sub': y', 'm', 'n', 'q, 'TCp′MGX\u2003 ...

Atactic polypropylene comb block polyolefins useful as modifiers in polyolefins and hydrocarbons

An atactic polypropylene comb-block polyolefin comprising two blocks including a polyolefin backbone and atactic polypropylene combs pendant to the backbone having a weight average molecular weight of at least 8000 g/mole and a crystallinity of less than 20%, where the atactic polypropylene comb-block polyolefin has comb number of at least 2. The atactic polypropylene comb-block polyolefin is made by contacting at a temperature within a range from 20 to 70° C. propylene with a first metallocene precursor to form vinyl-terminated atactic polypropylene to form vinyl-terminated atactic polypropylene, then contacting at a temperature within a range from 40 to 150° C. the vinyl-terminated atactic polypropylene with ethylene, propylene, or both and a second metallocene precursor to form the backbone.

Silane functionalized polyolefins for polyolefin nanocomposites

Described is a silane functionalized polyolefin and a method of forming the composition, the composition comprising compounds having the following structure: wherein R 2 , R 3 , and R 4 are independently selected from hydrogen, C1 to C10 linear alkyls, C6 to C14 aryls, C7 to C20 alkylaryls, and substituted versions thereof; n has a value within the range from 20 to 2000; m has a value within the range from 1 to 10 or 20; R is selected from hydrogen or C1 to C10 alkyls; and f a and f b are residual functional moieties selected from carbon, oxygen, nitrogen, sulfur, phosphorous, silicon, and boron, where any remaining valences are bound to a group selected from hydrogen, C1 to C10 linear alkyls, C6 to C14 aryls, C7 to C20 alkylaryls, and substituted versions thereof.

THERMOPLASTIC ELASTOMER COMPOSITION WITH AN IMPROVED RUBBER PELLETIZATION PROCESS

A thermoplastic elastomer composition having improved durability, heat resistant and flexibility comprising a dynamically vulcanized blend of (A) a halogenated isobutylene elastomer, (B) polyamide and (C) an antioxidant having a melating temperature more than 70° C. and less than 200° C., wherein the elastomer (A) is dispersed as a domain in a continuous phase of the polyamide (B) and the dynamically vulcanized blend of the components (A) and (B) is dynamically vulcanized in the presence of the antioxidant (C) as an anti-blocking agent.

Polyamide-polyolefin copolymers and methods of making them

A process for forming a polyamide-polyolefin copolymer comprising combining a vinyl or vinylidene terminated polyolefin with a linker to form a polyolefin-linker composition; combining the polyolefin-linker composition with a polyamide to form a polyamide-polyolefin copolymer. The linker can be a glycidyl-siloxane compound or a poly(arylene ether) copolymer.

Isobutylene-based elastomer blends

The improved green strength, green elongation, and green relaxation properties of isobutylene-based elastomers at elevated temperatures along with improved aging and barrier properties are achieved by blending semi-compatible, semi-crystalline copolymers with the isobutylene elastomers. The semi-crystalline copolymers are typically copolymers of ethylene and an alpha-olefin having from 4 to 16 carbon atoms. The improved properties are maintained in subsequent rubber compounds containing said blends and are particularly useful in tire and pharmaceutical container applications.

Self-assembled Propylene-based Compositions and Methods of Production Thereof

Disclosed are self-assembled propylene-based bi-layer compositions having a skin layer comprising a propylene-based elastomer-toughened composition and a core layer comprising a propylene-based fiber-reinforced composition, wherein the propylene-based elastomer-toughened composition and propylene-based fiber-reinforced composition self-assemble upon mixing into the skin layer and the core layer. Processes for producing these self-assembled propylene-based compositions are also disclosed. 1. A propylene-based bi-layer composition comprising:a skin layer comprising 90 wt % or more of a propylene-based elastomer-toughened composition based on the weight of the skin layer anda core layer comprising 90 wt % or more of a propylene-based fiber-reinforced composition based on the weight of the core layer,wherein the elastomer-toughened composition is formed from (i) a functionalized low molecular weight (LMW) propylene polymer having a number average molecular weight (Mn) within the range from 5,000 g/mol to 40,000 g/mol and (ii) at least one functionalized elastomer,wherein the fiber-reinforced composition is formed from (i) a high molecular weight (HMW) propylene polymer having an Mn greater than 40,000 g/mol and (ii) reinforcing fibers, andwherein the elastomer-toughened composition and the fiber-reinforced composition self-assemble upon mixing into the skin layer and the core layer.2. The composition of claim 1 , wherein the elastomer-toughened composition and the fiber-reinforced composition self-assemble upon mixing into the skin layer and the core layer in 5 seconds or less.3. The composition of claim 1 , wherein the elastomer-toughened composition is present in the propylene-based bi-layer composition within the range from 1-50 wt % claim 1 , and wherein the fiber-reinforced composition is present in the propylene-based bi-layer composition within the range from 50-99 wt %.4. The composition of claim 1 , wherein the elastomer-toughened composition has an elastomeric ...

Polyolefin-arylene-ether nanoplatelet composites

Disclosed is a graft copolymer comprising an arylene-ether oligomer group having at least one polyolefin moiety bound thereto, wherein the arylene-ether oligomer has a number average molecular weight of less than 5,000 g/mole and the polyolefin has Mw of less than 10,000 g/mole. Also disclosed is a method to prepare a graft copolymer comprising reacting a neat or diluted arylene-ether oligomer with a vinyl or vinylidene-terminated polyolefin at a temperature of at least 80 or 100 or 120° C. to form heated reaction components; further reacting a Brφnsted acid or Lewis acid with the heated reaction components to form a polyolefin-arylene-ether oligomer.

Graft Polymers for Dispersing Graphene and Graphite

Disclosed herein are graft polymers having a copolymer backbone and polycyclic aromatic hydrocarbon branches for use as a nanofiller dispersant and methods for making the same. Also disclosed are elastomeric nanocomposite compositions comprising a halobutyl rubber matrix, nanoparticles of graphite or grapheme, and the graft polymer. Such elastomeric nanocomposite compositions are suitable as tire innerliners or innertubes. 1. A polymer comprising:(a) a copolymer backbone comprising units derived from an isoolefin having from 4 to 7 carbons and an alkylstyrene; and 'wherein the one or more branches are directly bonded to an aromatic moiety of the copolymer backbone.', '(b) one or more branches comprising a polycyclic aromatic hydrocarbon,'}2. The polymer of claim 1 , wherein the polycyclic aromatic hydrocarbon is polynuclear.3. The polymer of claim 2 , wherein the polycyclic aromatic hydrocarbon is selected from the group consisting of naphthalenes claim 2 , anthracenes claim 2 , phenanthrenes claim 2 , pyrenes claim 2 , benzopyrenes claim 2 , coronenes claim 2 , ovalenes claim 2 , and combinations thereof.4. The polymer of claim 1 , wherein the copolymer backbone is poly(isobutylene-co-p-methylstyrene) (IMSM).5. The polymer of claim 1 , wherein the one or more branches are covalently bound to the aromatic moiety via a ketone group.6. The polymer of claim 5 , wherein the polymer comprises the reaction product of:(a) a copolymer comprising units derived from an isoolefin having from 4 to 7 carbons and an alkylstyrene; and(b) an acyl halide and/or acid anhydride functionalized polycyclic aromatic hydrocarbon.7. A method comprising:(a) contacting (i) a copolymer comprising units derived from an isoolefin having from 4 to 7 carbons and an alkylstyrene and (ii) an acyl halide and/or acid anhydride functionalized polycyclic aromatic hydrocarbon in the presence of a catalyst at a temperature of about 80° C. to about 200° C.; and(b) recovering a polymer product.8. The method ...

Silane Functionalized Polyolefins for Polyolefin Nanocomposites

Described is a silane functionalized polyolefin and a method of forming the composition, the composition comprising compounds having the following structure: 3. The silane functionalized polyolefin of claim 1 , wherein R claim 1 , R claim 1 , and Rare independently selected from hydrogen claim 1 , and C1 to C10 linear alkyls.4. The silane functionalized polyolefin of claim 1 , comprising a polyolefin portion and the silane functional portion claim 1 , wherein the polyolefin portion is a polypropylene claim 1 , polyethylene claim 1 , or ethylene propylene copolymer.5. A graft polyolefin comprising the silane functionalized polyolefin of and at least one surface hydroxyl-containing inorganic or carbon filler.6. The graft polyolefin of claim 5 , wherein the fillers are selected from solid materials having surface hydroxyl groups.7. The graft polyolefin of claim 5 , wherein the filler is selected from the group consisting of silicates claim 5 , aluminates claim 5 , borates claim 5 , silica claim 5 , quartz claim 5 , glass claim 5 , alumina claim 5 , alumino-silicates claim 5 , silicon claim 5 , copper claim 5 , copper oxide claim 5 , tin claim 5 , tin oxide claim 5 , talc claim 5 , iron oxide claim 5 , chromium oxide claim 5 , steel claim 5 , iron claim 5 , nickel claim 5 , zinc claim 5 , lead claim 5 , and calcium carbonate claim 5 , and mixtures thereof.8. The graft polyolefin of claim 5 , where the filler has an average particle size of less than 0.1 μm in one dimension.9. A polyolefin nanocomposite comprising the graft polyolefin of claim 5 , and at the least one polyolefin selected from polypropylene claim 5 , polyethylene claim 5 , and ethylene-propylene copolymers.10. A fabric or film comprising the polyolefin nanocomposite of .14. The method of claim 11 , wherein R claim 11 , R claim 11 , and Rare independently selected from hydrogen claim 11 , and C1 to C10 linear alkyls.15. The method of claim 11 , wherein the functionalized polyolefin is a functionalized ...

Polyolefin compositions

A composition comprising vinyl-terminated polyethylene having an Mn from about 200 g/mol to about 10,000 g/mol; and a comb polyolefin having polyethylene arms attached to a random copolymer backbone, said backbone including units derived from an alpha-olefin having 3 or more carbon atoms, where the polyethylene arms have an Mn from about 200 g/mol to about 10,000 g/mol, and where the comb polyolefin has an Mp from about 7,500 to about 400,000 g/mol.

Atactic Polypropylene Comb Block Polyolefins Useful as Modifiers in Polyolefins and Hydrocarbons

An atactic polypropylene comb-block polyolefin comprising two blocks including a polyolefin backbone and atactic polypropylene combs pendant to the backbone having a weight average molecular weight of at least 8000 g/mole and a crystallinity of less than 20%, where the atactic polypropylene comb-block polyolefin has comb number of at least 2. The atactic polypropylene comb-block polyolefin is made by contacting at a temperature within a range from 20 to 70° C. propylene with a first metallocene precursor to form vinyl-terminated atactic polypropylene to form vinyl-terminated atactic polypropylene, then contacting at a temperature within a range from 40 to 150° C. the vinyl-terminated atactic polypropylene with ethylene, propylene, or both and a second metallocene precursor to form the backbone. 1. A process for preparing atactic polypropylene comb-block polyolefins comprising:contacting, at a temperature within a range from 20 to 70° C., propylene with a first metallocene precursor and an activator to form vinyl-terminated atactic polypropylene having a weight average molecular weight of at least 8000 g/mole and a crystallinity of less than 20%; andcontacting, at a temperature within a range from 40 to 150° C., the vinyl-terminated atactic polypropylene with ethylene, propylene, or both, a second metallocene precursor, and an activator to form atactic polypropylene comb-block polyolefins.2. The process of claim 1 , wherein the first metallocene precursor is selected from the group consisting of bridged Csymmetric hafnocenes and zirconocenes.3. The process of claim 1 , wherein the atactic polypropylene comb-block polyolefin is an atactic polypropylene comb-block polypropylene having a weight average molecular weight within the range from 50 claim 1 ,000 to 500 claim 1 ,000 g/mole.4. The process of claim 1 , wherein the atactic polypropylene comb-block polyolefin is an atactic polypropylene comb-block polyethylene having a weight average molecular weight within the ...

CHAIN END FUNCTIONALIZED POLYOLEFINS FOR IMPROVING WET TRACTION AND ROLLING RESISTANCE OF TIRE TREADS

Chain End Functionalized Polyolefins for Improving Wet Traction and Rolling Resistance of Tire Treads

A functionalized polyolefin and a tire tread composition comprising the functionalized polyolefin is described. The functionalized polyolefin comprises a vinyl/vinylidene-terminated polyolefin in which the vinyl/vinylidene terminus is functionalized with an alkoxysilane or an alkylsilane and optionally having ether, hydroxyl and/or amine functionality. The invention is also directed to the synthesis of vinyl/vinylidene-terminated polyolefins, functionalization at the vinyl/vinylidene terminus with an alkoxysilane or an alkylsilane and optionally having ether, hydroxyl and/or amine functionality.

Compatibilized Thermoplastic Vulcanizate Compositions

This invention relates to a thermoplastic vulcanizate having excellent elongation comprising an isotactic polypropylene matrix phase in which a cross-linked ethylene-propylene-diene terpolymer (EPDM) is dispersed, the vulcanizate comprising the reaction product of: a) 35 to 55 wt % of an ethylene-propylene-diene terpolymer (EPDM); b) 10 to 40 wt % of isotactic polypropylene (iPP); c) 0.5 to 25 wt % of a propylene-ethylene-diene terpolymer (PEDM) compatibilizer, said compatibilizer having a heat of fusion of less than 2 J/g; and d) 0.015 to 0.03 wt % of curatives; wherein the percentages of components (a) to (d) are based on the total weight of the mixture.

Bimodal Bottlebrush Poly(alpha olefin) Solid Lubricants

Bottlebrush poly(alpha olefin)s of high carbon number, greater than 12 such as poly(octadecene), are used as a thickener for a synthetic base oil grease lubricant that is based on oligomerized alpha olefin with carbon number from 7 to 12, such as oligo(decene). Dispersion aids are not required in the present lubricants because poly(octadecene) can be dissolved in oligo(decene). The lubricant is a solid grease formed by percolation/network of the poly(octadecene) crystals, at a sufficient concentration, after the crystallization of poly(octadecene), and water resistant having oxidation/high temperature stability. 1. A bimodal blend comprising:a first PAO composition having a number average molecular weight of less than 10,000 g/mol and a carbon number from 7 to 12; anda second PAO composition having a number average molecular weight of 10,000 g/mol or more and carbon number greater than 12,wherein both the first and second PAO compositions are produced by coordinative insertion polymerization and the concentration of the first PAO composition in the blend is between about 60 wt % and 99 wt % of the total weight of the bimodal blend.2. The bimodal blend of claim 1 , wherein the concentration of the second PAO composition is between about 1 wt % and 40 wt % of the total weight of the bimodal blend.3. The bimodal blend of claim 1 , wherein the first PAO composition comprises oligomers.4. The bimodal blend of claim 1 , wherein the second PAO composition comprises polymers.5. The bimodal blend of claim 1 , wherein the first PAO composition is produced with Group IV metallocone catalysts.6. The bimodal blend of claim 1 , wherein the second PAO composition is produced with a pyridyldiamido transition metal complex.7. The bimodal blend of claim 1 , wherein the second PAO composition is produced with a quinolyldiamido transition metal complex.8. The bimodal blend of comprising poly(alpha olefin)s of poly(1-heptene) and above.9. The bimodal blend of comprising alpha olefins ...

IMPROVED ANTI-WEAR PERFORMANCE OF LUBRICANTS USING CARBON NANOPLATELETS

Construction comprising tie layer

A layered structure suitable for use in a pneumatic tire as an innerliner is prepared by directly bonding a fluid permeation prevention film and an adhesive tie layer. Prior to the bonding, the fluid permeation prevention layer is treated to remove any residual plasticizers or oils on the surface of the film. The tie layer comprises 100 weight % of at least one halogenated isobutylene containing elastomer and about 1 to about 20 parts per hundred (phr) of at least one tackifier. The fluid permeation prevention film comprises an elastomeric component dispersed in a vulcanized or partially vulcanized state, as a discontinuous phase, in a matrix of the thermoplastic resin component. The two layers of the layered structure may be separately extruded and then adhered to each other or adhered to each other during a calendaring operation wherein the adhesive tie layer composition is coated onto the treated film.

Compositions comprising propylene-based elastomers and polyalphaolefins

Provided are compositions comprising a propylene-based elastomer and a polyalphaolefin. The compositions may be particularly useful in elastic film compositions, and especially useful as elastic film layers in nonwoven laminates.

Star hydrocarbon polymer, process for making, and a polymer blend composition having same

Provided is a process for making a saturated star hydrocarbon polymer. The process has the following steps: (A) hydrosilylating tetraethylene silicon with methyldichlorosilane in the presence of a hydrosilylating catalyst to form a chlorosilane dendrimer; (B) reacting the chlorosilane dendrimer with vinylmagnesium bromide in the presence of a lithium and/or organolithium initiator stepwise to build a higher generation chlorosilane dendrimer; (C) anionically polymerizing polybutadiene in the presence of a lithium and/or organolithium initiator to form living poly(butadienyl)lithium; (D) attaching the living poly(butadienyl)lithium to the higher generation dendrimer to form a star polybutadiene; and (E) hydrogenating the star polybutadiene to form the saturated star hydrocarbon polymer. There is also provided a saturated star hydrocarbon polymer made according to the above process and a polymer composition of a matrix ethylene polymer and the saturated star hydrocarbon polymer.

Tire Innerliners Having Improved Cold Temperature Properties

Provided are elastomeric compositions, such as a tire innerliner, comprising at least one isobutylene based elastomer and at least one hydrocarbon fluid additive ("HFA"). The compositions have improved cold temperature properties and are particularly useful as tire innerliners for an aircraft tire. The use of a HFA in the elastomeric composition may allow for the use of reduced amounts of secondary elastomers, such as natural rubber, while allowing for an improved balance in the composition's brittleness and permeability properties. Examples of useful HFAs include polyalphaolefins, high purity hydrocarbon fluids, and water white group III mineral oils.

Block Copolymer Comprising a Polyalpha-Olefin Block and a Poly(Alkyl Methacrylate) Block

A block copolymer comprising a PAO block derived from alpha-olefin monomer(s) having a carbon backbone comprising more than six (6) carbon atoms per molecule and a poly(alkyl methacrylate) block derived from alkyl methacrylate monomer(s) having an alkyl group comprising at least six (6) carbon atoms forms micelles in hydrocarbon solvents and lubricant oil base stocks with large space volume even at low overall molecular weight. The block copolymer of this disclosure is particularly advantageous as viscosity modifier for lubricant oil compositions. 2. The block copolymer of claim 1 , wherein at least one of the following is met:(i) m is in a range from 10 to 500; and(ii) n is in a range from 10 to 500.3. The block copolymer of claim 1 , wherein at least one of the following is met:{'sup': '−1', '(i) the PAO block has a number average molecular weight in a range from 3,000 to 50,000 grams·mole;'}{'sup': '−1', '(ii) the PAMA block has a number average molecular weight in a range from 1,000 to 30,000 grams·mole; and'}{'sup': '−1', '(iii) the block copolymer has an overall number average molecular weight in a range from 4,000 to 80,000 grams·mole.'}4. The block copolymer of claim 1 , wherein the PAO block is formed by polymerization of the at least one alpha-olefin monomer in the presence of a coordination polymerization catalyst system under polymerization conditions to effect insertion polymerization.5. The block copolymer of claim 4 , wherein the coordination polymerization catalyst system comprises one of the following: (i) a Ziegler-Natta catalyst; and (ii) a metallocene compound.6. The block copolymer of claim 1 , wherein the PAO block consists essentially of component(s) represented by the structure within the brackets in formula (F-I).7. The block copolymer of claim 1 , wherein the PAMA block is produced by polymerization of at least one alkyl methacrylate monomer in the presence of a radical polymerization catalyst system under polymerization conditions to ...

Compositions Comprising Propylene-Based Elastomers and Polyalphaolefins

Provided are compositions comprising a propylene-based elastomer and a polyalphaolefin. The compositions may be particularly useful in elastic film compositions, and especially useful as elastic film layers in nonwoven laminates. The composition may comprise a blend of from about 0.5 to about 60 wt % of a polyalphaolefin and 40 to 99.5 wt % of a propylene-based elastomer. The composition may comprise a blend of a propylene-based elastomer that comprises propylene and from 5 to 30 wt % of an α-olefin and a polyalphaolefin having a kinematic viscosity (KV) at 100° C. of from 100 to 3000 cSt.

Branched EPDM polymers produced via use of vinyl transfer agents and processes for production thereof

This invention relates to the use of quinolinyldiamido transition metal complexes and catalyst systems with an activator and a metal hydrocarbenyl chain transfer agent, such as an aluminum vinyl-transfer agent (AVTA), to produce branched propylene-ethylene-diene terpolymers.

Bimodal ethylene, alpha-olefin, and diene polymers using dual organometallic catalysts

The present disclosure provides catalyst systems having a bridged metallocene compound and a transition metal pyridyldiamide compound for use in alkene polymerization to produce multimodal polyolefins, such as multimodal ethylene, propylene, diene monomer copolymers. In some embodiments, the present disclosure provides for polyolefins and processes for producing a polyolefin composition including contacting at least one olefin with a catalyst system of the present disclosure.

Copolymers

A polyacrylate-polyolefin copolymer and composition for volatile solvent-free coating comprising such compounds having the following structure: wherein “PO” is a polyolefin having a number average molecular weight of at least 300 g/mole, and “Ar” is selected from the group consisting of C6 to C20 aryls, a C7 to C32 alkylaryls, a C6 to C20 aryloxys, and halogen substituted C6 to C20 aryls and C7 to C32 alkylaryls, while the other variables are as described herein. The copolymers can be produced in an alkylation reaction between the desired polyacrylate and a vinyl/vinylidene-terminated polyolefin.

Polyolefin Compositions

A composition comprising vinyl-terminated polyethylene having an Mn from about 200 g/mol to about 10,000 g/mol; and a comb polyolefin having polyethylene arms attached to a random copolymer backbone, said backbone including units derived from an alpha-olefin having 3 or more carbon atoms, where the polyethylene arms have an Mn from about 200 g/mol to about 10,000 g/mol, and where the comb polyolefin has an Mp from about 7,500 to about 400,000 g/mol. 1. A composition comprising:(i) vinyl-terminated polyethylene having an Mn from about 200 g/mol to about 10,000 g/mol; and(ii) a comb polyolefin having polyethylene arms attached to a random copolymer backbone, said backbone including units derived from an alpha-olefin having 3 or more carbon atoms, where the polyethylene arms have an Mn from about 200 g/mol to about 10,000 g/mol, and where the comb polyolefin has an Mp from about 7,500 to about 400,000 g/mol.2. The composition of claim 1 , where the vinyl-terminated polyethylene have an Mn from about 1500 g/mol to about 6 claim 1 ,000 g/mol.3. The composition of claim 1 , where the comb polyolefin has an Mp from about 20 claim 1 ,000 to about 200 claim 1 ,000.4. The composition of claim 1 , where the alpha-olefin having 3 or more carbon atoms is propylene.5. The composition of claim 1 , where the backbone includes units derived from propylene and units derived from ethylene claim 1 , where the majority of the total units in the polymer backbone are units derived from propylene.6. The composition of claim 1 , where the comb polyolefin is a random copolymer including units derived from vinyl-terminated polyethylene claim 1 , from ethylene claim 1 , and from alpha-olefin having 3 or more carbon atoms.7. The composition of claim 1 , where the composition includes from about 5 to about 50 wt % of the vinyl-terminated polyethylene and from about 50 to about 95 wt % of the comb polyolefin.8. The composition of claim 1 , where the composition includes from about 15 to about 40 ...

Thermoplastic filled membranes of propylene copolymers

The invention relates to a thermoplastic membrane (e.g. film, fluid barrier, and the like) which is formed from a blend of: a) a first polymer component (FPC), wherein said FPC comprises a propylene-ethylene copolymer containing from 80 to 93 percent by weight of units derived from propylene, and having a melting point derived from stereoregular polypropylene sequences, as determined by differential scanning calorimetry (DSC), in the range of from 25° C. to 70° C., and a heat of fusion of from 2 J/g to 25 J/g; b) an inorganic filler; c) a processing oil, and d) optionally, a second polymer component (SPC), wherein said SPC is a stereoregular polypropylene containing less than 7 percent by weight of units derived from ethylene or alpha-olefin monomer containing from 4 to 8 carbon atoms and having melting point, as determined by DSC, greater than 130° C., and a heat of fusion greater than 80 J/g.

Compatibilized thermoplastic vulcanizate compositions

This invention relates to a thermoplastic vulcanizate having excellent elongation comprising an isotactic polypropylene matrix phase in which a cross-linked ethylene-propylene-diene terpolymer (EPDM) is dispersed, the vulcanizate comprising the reaction product of:a) 35 to 55 wt % of an ethylene-propylene-diene terpolymer (EPDM);b) 10 to 40 wt % of isotactic polypropylene (iPP);c) 0.5 to 25 wt % of a propylene-ethylene-diene terpolymer (PEDM) compatibilizer, said compatibilizer having a heat of fusion of less than 2 J/g; andd) 0.015 to 0.03 wt % of curatives;wherein the percentages of components (a) to (d) are based on the total weight of the mixture.

Modified polyethylene blown film compositions having excellent bubble stability

The present invention relates to polyethylene compositions comprising one or more ethylene polymers and one or more dendritic hydrocarbon polymer modifiers, in particular, this invention further relates to polyethylene blends comprising one or more ethylene polymers and one or more dendritic hydrocarbon polymer modifiers, wherein the modifier has: 1) a g′ vis value less than 0.75; 2) at least 0.6 ppm ester groups as determined by 1 H NMR; 3) a Tm of 100° C. or more; 4) an Mw of 50,000 g/mol or more, as determined by GPC; 5) an average number of carbon atoms between branch points of 70 or more as determined by 1 H NMR.

Compatibilized Thermoplastic Vulcanizate Compositions

Disclosed is the preparation of compatibilized thermoplastic vulcanizates with reduced crosslinked rubber dispersion sizes and dispersity. A cross-linkable ethylene-propylene-diene terpolymer with majority propylene (PEDM) is used to compatibilize a plastic and rubber blend of a polypropylene (PP) and an ethylene-propylene-diene terpolymer rubber, where the propylene content is less than 50 wt % (EPDM), in dynamic vulcanization and preparation of PP/EPDM thermoplastic vulcanizates. The resulting PP/EPDM thermoplastic vulcanizates typically exhibit a weight average equivalent dispersion diameter of less than 3 microns and a particle size polydispersity index (PSDI), or weight average over number average dispersion diameter, of less than 5. This reduction in crosslinked rubber dispersion size in a PP/EPDM TPV by using PEDM compatibilizers enhances the toughness of the vulcanizate product by raising both elongation to break and break stress. 1. A thermoplastic vulcanizate comprising an isotactic polypropylene matrix phase in which a cross-linked ethylene-propylene-diene terpolymer (EPDM) is dispersed , the vulcanizate comprising the reaction product of:a) 35 to 55 wt % of an ethylene-propylene-diene terpolymer (EPDM);b) 20 to 30 wt % of isotactic polypropylene (iPP);c) 10 to 25 wt % of a diluent;d) 0.5 to 15 wt % of a propylene-ethylene-diene terpolymer (PEDM) compatibilizer; ande) 0.015 to 0.03 wt % of curatives;each weight percent is by weight of the combined components.2. The thermoplastic vulcanizate of claim 1 , in which the EPDM comprises 55 to 75 wt % ethylene claim 1 , 2 to 10 wt % ethylene norbornene.3. The thermoplastic vulcanizate of claim 1 , in which the amount of PEDM is from 2 to 30 wt % of the amount of EPDM.4. The thermoplastic vulcanizate of claim 1 , in which the MFR16 at 230° C. of the PEDM is from 0.5 to 20 g/10 min.5. The thermoplastic vulcanizate of claim 1 , in which the PEDM comprises 5 to 20 wt % ethylene and 2 to 15 wt % ethylene norbornene.6 ...

Polyamide-Polyolefin Copolymers and Methods of Making Them

A process for forming a polyamide-polyolefin copolymer comprising combining a vinyl or vinylidene terminated polyolefin with a linker to form a polyolefin-linker composition; combining the polyolefin-linker composition with a polyamide to form a polyamide-polyolefin copolymer. The linker can be a glycidyl-siloxane compound or a poly(arylene ether) copolymer. 1. A process for forming a polyamide-polyolefin copolymer comprising:combining a vinyl or vinylidene terminated polyolefin with a linker to form a polyolefin-linker composition; andcombining the polyolefin-linker composition with a polyamide to form a polyamide-polyolefin copolymer.2. The process of claim 1 , wherein the linker is a glycidyl-siloxane compound.3. The process of claim 2 , wherein the combining step of a vinyl or vinylidene terminated polyolefin with a linker is effected by Pt or Pd catalysis at a temperature of from 10 to 40° C.; and the combining step of the polyolefin-linker composition with a polyamide is effected by heating and/or reactive extrusion at a temperature of at least 180° C.4. The process of claim 1 , wherein the linker is a poly(arylene ether).5. The process of claim 4 , comprising:(a.i) combining the vinyl or vinylidene terminated polyolefin with the poly(arylene ether) to form a polyolefin-poly(arylene ether) copolymer; and(a.ii) modifying the polyolefin-poly(arylene ether) copolymer to form a modified polyolefin-poly(arylene ether); or(b.i) modifying the poly(arylene ether) to form a modified poly(arylene ether); and(b.ii) combining the modified poly(arylene ether) with a vinyl or vinylidene terminated polyolefin to form a modified polyolefin-poly(arylene ether); andcombining the modified polyolefin-poly(arylene ether) copolymer with a polyamide to form the polyamide-polyolefin copolymer.6. The process of claim 5 , wherein the modification comprises halogenation claim 5 , where an arylene hydrogen is exchanged for a leaving group selected from chlorine claim 5 , bromine claim 5 ...

Thermoplastic Vulcanizate Compositions

A thermoplastic vulcanizate comprises an isotactic polypropylene matrix phase in which cross-linked rubber particles are dispersed, the rubber particles comprising an ethylene-propylene-diene terpolymer (EPDM) containing at least 40 wt % of ethylene-derived units. A propylene-ethylene-diene terpolymer (PEDM) containing at least 60 wt % propylene-derived units and less than or equal to 25 wt % of ethylene-derived units and having a heat of fusion (H) of 2 to 10 J/g is added to compatibilize the propylene/EPDM blend. 1. A thermoplastic vulcanizate comprising an isotactic polypropylene matrix phase in which cross-linked rubber particles are dispersed , the thermoplastic vulcanizate comprising the reaction product of a mixture comprising:(a) at least 10 wt % of isotactic polypropylene;(b) at least 25 wt % of an ethylene-propylene-diene terpolymer (EPDM) containing at least 40 wt % of ethylene-derived units;(c) at least 0.5 wt % of a propylene-ethylene-diene terpolymer (PEDM) containing at least 60 wt % propylene-derived units and less than or equal to 25 wt % of ethylene-derived units and having a heat of fusion (Hf) of 2 to 10 J/g; and(d) at least 0.015 wt % of at least one curative,wherein the percentages of components (a) to (d) are based on the total weight of the mixture.2. The thermoplastic vulcanizate of claim 1 , wherein the PEDM comprises 5 to 18 wt % of ethylene-derived units.3. The thermoplastic vulcanizate of claim 1 , wherein the PEDM comprises 0.3 to 10 wt % of diene-derived units; where the diene is selected from the group consisting of 5-ethylidene-2-norbornene claim 1 , 5-vinyl-2-norbornene claim 1 , divinyl benzene claim 1 , and dicyclopentadiene.4. The thermoplastic vulcanizate of claim 1 , wherein the PEDM has a Mooney viscosity of MST (5+4) at 230° C. from 10 to 90.5. The thermoplastic vulcanizate of claim 1 , in which the amount of PEDM is from 2 to 30 wt % of the amount of EPDM.6. The thermoplastic vulcanizate of claim 1 , wherein the particle ...

IMPROVED ANTI-WEAR PERFORMANCE OF LUBRICANTS USING CARBON NANOPLATELETS

COMPATIBILIZED TIRE TREAD COMPOSITIONS

Toughened polyolefin nanocomposites using silane functionalized polyolefins

A method of forming a polyolefin-filler hybrid comprising combining vinyl/vinylidene-terminated polyolefin (VTP) and halosilane to form a silane functionalized polyolefin, followed by combining the silane functionalized polyolefin with a hydroxyl-containing filler, and/or combining the silane functionalized polyolefin with water and combining with hydroxyl-containing filler; to form a polyolefin-filler hybrid.

Compatibilized Tire Tread Compositions

A polyolefin-polybutadiene block-copolymer and a tire tread composition comprising the polyolefin-polybutadiene block-copolymer, the composition comprising, by weight of the composition, within the range from 15 to 60 wt % of a styrenic copolymer, processing oil, filler, a curative agent, and from 4 to 20 wt % of a polyolefin-polybutadiene block-copolymer, wherein the polyolefin-polybutadiene block-copolymer is a block copolymer having the general formula PO-XL-fPB; where “PO” is a polyolefin block having a weight average molecular weight within the range from 1000 to 150,000 g/mole, the “fPB” is a functionalized polar polybutadiene block having a weight average molecular weight within the range from 500 to 30,000 g/mole, and “XL” is a cross-linking moiety that covalently links the PO and fPB blocks; and wherein the maximum Energy Loss (Tangent Delta) of the immiscible polyolefin domain is a temperature within the range from −30° C. to 10° C.

Functionalized elastomer nanocomposite

Fiber-Reinforced Polypropylene/Elastomer Composite

Provided is a fiber-reinforced composite. The composite has a propylene polymer including 90 wt % or more of propylene monomeric units based on the weight of the propylene polymer; a plurality of fibers of a solid, flexible material grafted to the propylene polymer; and an elastomer. The fibers are present in the composite at 10 wt % to 80 wt % based on the total weight of the composite. The propylene polymer is present in the composite at from 30 wt % to 95 wt % based on the total weight of the composite. The elastomer is present in the composite at from 5 wt % to 50 wt % based on the total weight of the composite. Greater than 50 wt % of the fibers are dispersed within the propylene polymer based on the total weight of the fibers in the composite. There is also provided a process for making a fiber-reinforced composite. 1. A fiber-reinforced composite , comprising:a propylene polymer including 90 wt % or more of propylene monomeric units based on the weight of the propylene polymer;a plurality of fibers of a solid, flexible material grafted to the propylene polymer; andan elastomer exhibiting a glass transition temperature of less than 0° C.;wherein the fibers are present in the composite at 10 wt % to 80 wt % based on the total weight of the composite, wherein the propylene polymer is present in the composite at from 30 wt % to 95 wt % based on the total weight of the composite, wherein the elastomer is present in the composite at from 5 wt % to 50 wt % based on the total weight of the composite, wherein greater than 50 wt % of the fibers are dispersed within the propylene polymer based on the total weight of the fibers in the composite.2. The composite of claim 1 , wherein the propylene polymer includes 95 wt % or more of propylene monomeric units based on the weight of the propylene polymer.3. The composite of claim 2 , wherein the propylene polymer is polypropylene.4. The composite of claim 3 , wherein the polypropylene is an isotactic polypropylene.5. The ...

STAR HYDROCARBON POLYMER, PROCESS FOR MAKING, AND A POLYMER BLEND COMPOSITION HAVING SAME

Provided is a process for making a saturated star hydrocarbon polymer. The process has the following steps: (A) hydrosilylating tetraethylene silicon with methyldichlorosilane in the presence of a hydrosilylating catalyst to form a chlorosilane dendrimer; (B) reacting the chlorosilane dendrimer with vinylmagnesium bromide in the presence of a lithium and/or organolithium initiator stepwise to build a higher generation chlorosilane dendrimer; (C) anionically polymerizing polybutadiene in the presence of a lithium and/or organolithium initiator to form living poly(butadienyl)lithium; (D) attaching the living poly(butadienyl)lithium to the higher generation dendrimer to form a star polybutadiene; and (E) hydrogenating the star polybutadiene to form the saturated star hydrocarbon polymer. There is also provided a saturated star hydrocarbon polymer made according to the above process and a polymer composition of a matrix ethylene polymer and the saturated star hydrocarbon polymer. 1. A process for making a saturated star hydrocarbon polymer comprising:(A) hydrosilylating tetraethylene silicon with methyldichlorosilane in the presence of a hydrosilylating catalyst to form a chlorosilane dendrimer;(B) reacting the chlorosilane dendrimer with vinylmagnesium bromide stepwise to build a higher generation chlorosilane dendrimer;(C) anionically polymerizing polybutadiene in the presence of a lithium and/or organolithium initiator to form living poly(butadienyl)lithium;(D) attaching the living poly(butadienyl)lithium to the higher generation dendrimer to form a star polybutadiene; and(E) hydrogenating the star polybutadiene to form the saturated star hydrocarbon polymer.2. The process of claim 1 , wherein the hydrosilylating catalyst is lithium catalyst or an organolithium catalyst.3. The process of claim 1 , wherein the hydrosilylating catalyst is an organolithium catalyst chosen from n-propyl lithium claim 1 , isopropyl lithium claim 1 , n-butyl lithium claim 1 , tertiary ...

CONSTRUCTION COMPRISING TIE LAYER

A layered structure suitable for use in a pneumatic tire as an innerliner is prepared by directly bonding a fluid permeation prevention film and an adhesive tie layer. Prior to the bonding, the fluid permeation prevention layer is treated to remove any residual plasticizers or oils on the surface of the film. The tie layer comprises 100 weight % of at least one halogenated isobutylene containing elastomer and about 1 to about 20 parts per hundred (phr) of at least one tackifier. The fluid permeation prevention film comprises an elastomeric component dispersed in a vulcanized or partially vulcanized state, as a discontinuous phase, in a matrix of the thermoplastic resin component. The two layers of the layered structure may be separately extruded and then adhered to each other or adhered to each other during a calendaring operation wherein the adhesive tie layer composition is coated onto the treated film. 1. A process for fabricating a laminate structure comprising the following steps: (1) 100 weight % of at least one halogenated isobutylene-containing elastomer;', '(2) about 20 to about 50 weight % of at least one filler;', '(3) about 0 to about 30 weight % of at least one processing oil;', '(4) about 1 to about 20 parts per hundred (phr) of at least one tackifier; and;', '(5) about 0.1 to about 15 parts per hundred of rubber (phr) of a curing system for said elastomers;, '(A) forming an adhesive tie composition comprising a mixture of ["(1) at least 10% by weight, based on the total weight of the polymer composition, of at least one thermoplastic engineering resin component having a Young's modulus of more than 500 MPa, where the thermoplastic engineering resin component is selected from the group consisting of polyamide resins, polyester resins, polynitrile resins, polymethacrylate resins, polyvinyl resins, cellulose resins, fluororesins, and imide resins,", "(2) at least 10% by weight, based on the total weight of the polymer composition, of at least one ...

Modified Polyethylene Film Compositions

The present invention relates to polyethylene compositions comprising one or more ethylene polymers and one or more dendritic hydrocarbon polymer modifiers, in particular, this invention further relates to polyethylene blends comprising one or more ethylene polymers and one or more dendritic hydrocarbon polymer modifiers, wherein the modifier has: 1) a g′ value less than 0.75; 2) a Cayley tree topology with a layer number of 2 or more more; and 3) a average Mw between the branch points of 1,500 g/mol or more. 1. A polyethylene blend comprising one or more ethylene polymers and one or more dendritic hydrocarbon polymer modifiers , wherein the modifier has: 1) a g′value less than 0.75; and 2) a Cayley tree topology with a layer number of 2 or more.2. The composition of claim 1 , wherein the modifier has 5 wt % or less of xylene insoluble material claim 1 , and/or an average Mw between the branch points of 1 claim 1 ,500 g/mol or more claim 1 , and/or at least 0.6 ppm of silicon.3. The composition of claim 1 , wherein the complex viscosity at 0.1 secof the modifier is equal to or greater than the complex viscosity at 0.1 secof the polyethylene prior to combination with the modifier.4. The composition of claim 1 , wherein the modifier is present at 0.25 wt % to 20 wt % claim 1 , based upon the weight of the blend.5. The composition of claim 1 , wherein the polyethylene comprises a copolymer of ethylene and one or more Cto Calphaolefins and has an Mof 20 claim 1 ,000 to 1 claim 1 ,000 claim 1 ,000 g/mol.6. The composition of claim 1 , wherein the polyethylene has a density of 0.87 to 0.96 g/cm.7. The composition of claim 1 , wherein the modifier is present at from 0.1 wt % to 5 wt % claim 1 , (based upon the weight of the blend); and the polyethylene has a composition distribution breadth index of 60% or more and a density of 0.90 g/cc or more.8. The modifier of claim 1 , wherein the modifier has a strain-hardening ratio of 2 or more and the blend has a strain hardening ...

Modified Polyethylene Blown Film Compositions Having Excellent Bubble Stability

The present invention relates to polyethylene compositions comprising one or more ethylene polymers and one or more dendritic hydrocarbon polymer modifiers, in particular, this invention further relates to polyethylene blends comprising one or more ethylene polymers and one or more dendritic hydrocarbon polymer modifiers, wherein the modifier has: 1) a g′value less than 0.75; 2) at least 0.6 ppm ester groups as determined by H NMR; 3) a Tm of 100° C. or more; 4) an Mw of 50,000 g/mol or more, as determined by GPC; 5) an average number of carbon atoms between branch points of 70 or more as determined by H NMR. 1. A polyethylene blend comprising one or more ethylene polymers and one or more dendritic hydrocarbon polymer modifiers , wherein the modifier has: 1) a g′value less than 0.75; 2) at least 0.6 ppm ester groups as determined by H NMR; 3) a Tm of 100° C. or more; 4) an Mw of 50 ,000 g/mol or more , as determined by GPC; and 5) an average number of carbon atoms between branch points of 70 or more as determined by H NMR.2. The composition of claim 1 , wherein the modifier has 5 wt % or less of xylene insoluble material.3. The composition of claim 1 , wherein the modifier has a weight average molecular weight between the branch points of 1 claim 1 ,000 g/mol or more.4. The composition of claim 1 , wherein the modifier is present at 0.25 wt % to 10 wt % claim 1 , based upon the weight of the blend.5. The composition of claim 1 , wherein the polyethylene comprises a copolymer of ethylene and one or more Cto Calphaolefins and has an Mof 20 claim 1 ,000 to 1 claim 1 ,000 claim 1 ,000 g/mol.6. The composition of claim 1 , wherein the polyethylene has a density of 0.91 to 0.96 g/cm.7. The composition of claim 1 , wherein the modifier is present at from 0.1 wt % to 5 wt % (based upon the weight of the blend) claim 1 , and the polyethylene has a composition distribution breadth index of 60% or more and a density of 0.90 g/cc or more.8. The modifier of claim 1 , wherein the ...

Polyethylene Compositions Comprising Cyclic-Olefin Copolymers

A composite comprising a polyethylene and within a range from 1 wt % to 25 wt % of at least one cyclic-olefin copolymer by weight of the composition, where the polyethylene may have a density of at least 0.90 g/cm3, and where the cyclic-olefin copolymer has a glass transition temperature (Tg) of at least 30° C. Disclosed also is the feature of orienting the composite to form an oriented article, wherein the article comprises rods having an average length of at least 1 μm, and at least 5 nm in average diameter.

Polyolefin-Arylene-Ether Nanoplatelet Composites

Disclosed is a graft copolymer comprising an arylene-ether oligomer group having at least one polyolefin moiety bound thereto, wherein the arylene-ether oligomer has a number average molecular weight of less than 5,000 g/mole and the polyolefin has Mw of less than 10,000 g/mole. Also disclosed is a method to prepare a graft copolymer comprising reacting a neat or diluted arylene-ether oligomer with a vinyl or vinylidene-terminated polyolefin at a temperature of at least 80 or 100 or 120° C. to form heated reaction components; further reacting a Brφnsted acid or Lewis acid with the heated reaction components to form a polyolefin-arylene-ether oligomer. 1. A graft copolymer (PPE-g-PO) comprising an arylene-ether oligomer group having at least one polyolefin moiety bound thereto , wherein the arylene-ether oligomer has a number average molecular weight (Mn) of less than 5 ,000 g/mole and the polyolefin has Mn of less than 10 ,000 g/mole.2. The graft copolymer of claim 1 , wherein the polyolefin group is a polyolefin selected from the group consisting of polyethylene claim 1 , polypropylene claim 1 , ethylene-propylene copolymer claim 1 , hexene-ethylene copolymer claim 1 , octene-ethylene copolymer claim 1 , and combinations thereof.3. The graft copolymer of claim 1 , wherein the arylene-ether oligomer group has an Mn within a range of from 100 g/mole to 5 claim 1 ,000 g/mole.4. The graft copolymer of claim 1 , wherein the arylene monomer units are linked to one another in the meta position through an oxygen atom.5. The graft copolymer of claim 1 , wherein the polyolefin group has an Mn within a range of from 200 g/mole to 10 claim 1 ,000 g/mole.6. The graft copolymer of claim 1 , further comprising graphite nanoplatelets.7. The graft copolymer of claim 6 , wherein the graphite nanoplatelets have a density within a range from 1 g/cmto 4 g/cmdensity.8. The graft copolymer of claim 6 , wherein the graphite nanoplatelets have an average thickness within a range from 2 to ...

Propylene-Based Polymer Additives for Improved Tire Tread Performance

An elastomeric composition is disclosed. The elastomeric composition includes, per 100 parts by weight of rubber (phr): about 30 to about 50 phr of polybutadiene having a cis-1,4 linkage content of at least 95%; about 40 to about 60 phr of styrene/butadiene copolymer; about 0 to about 20 phr of natural rubber or polyisoprene; about 0 to about 30 phr of a processing oil; about 10 to about 30 phr of a hydrocarbon resin; about 50 to about 75 phr of a filler; a curative agent; an antioxidant; a silane coupling agent; and about 5 to about 30 phr of a propylene-ethylene-diene terpolymer containing from about 2 wt % to about 30 wt % of ethylene and/or C-Cα-olefins derived units. 1. An elastomeric composition comprising , per 100 parts by weight of rubber (phr):about 30 to about 50 phr of polybutadiene having a cis-1,4 linkage content of at least 95%;about 40 to about 60 phr of a styrene/butadiene copolymer;about 0 to about 20 phr of natural rubber or polyisoprene;about 0 to about 30 phr of a processing oil;about 10 to about 30 phr of a hydrocarbon resin;about 50 to about 75 phr of a filler;a curative agent;a silane coupling agent;an antioxidant; and{'sub': 4', '20, 'about 5 to about 40 phr of a propylene-ethylene-diene terpolymer containing from about 2 to about 30 wt % of ethylene and/or C-Cα-olefins derived units.'}2. The elastomeric composition of claim 1 , wherein the propylene-ethylene-diene terpolymer is functionalized with bis-[3-(triethoxysilyl)-propyl]-tetrasulfide.3. The elastomeric composition of claim 1 , wherein the filler is a silica-based filler.4. The elastomeric composition of claim 1 , wherein the filler is a carbon black filler.5. The elastomeric composition of claim 1 , wherein the filler is blend of a silica-based filler and a carbon black filler.6. The elastomeric composition of claim 1 , wherein the propylene-ethylene-diene terpolymer is present in the amount of about 5 phr to about 25 phr.7. The elastomeric composition of claim 1 , wherein the ...

Propylene-alpha Olefin Copolymers and Methods for Making the Same

Provided is a composition having 60 wt % to 95 wt % of a first propylene alpha-olefin copolymer component having a reactivity ratio product of less than 0.75 and a weight average molecular weight of greater than about 450,000 g/mol; and 5 wt % to 40 wt % of a second propylene alpha-olefin copolymer component having a reactivity ratio of greater than 1.5 and a weight average molecular weight of less than about 215,000 g/mol.

Propylene-Olefin Copolymers and Methods for Making the Same

Provided is a composition having 70 wt % to 90 wt % of a first propylene-olefin copolymer component having an ethylene content of 15 to 21 wt %; and 10 wt % to 30 wt % of a second propylene-olefin copolymer component having an ethylene content of 6 to 10 wt %; wherein the weight average molecular weight of the first component is 250,000 to 1,780,000 g/mol higher than the weight average molecular weight of the second component; wherein the reactivity ratio product of the first component is less than 0.75; wherein the reactivity ratio product of the second component is greater than or equal to 0.75.

Polycyclic Aromatic Hydrocarbon Functionalized Isobutylene Copolymers for Dispersing Graphene and Graphite

Polycyclic aromatic hydrocarbon (PAH) functionalized isobutylene copolymers, methods for making a PAH functionalized isobutylene copolymer comprising combining a halogenated copolymer with a PAH in a solvent under basic conditions at a temperature ranging from 30° C. to 150° C., the use of these PAH functionalized copolymers as a dispersant in elastomeric nanocomposite compositions comprising a halobutyl rubber matrix and nanoparticles of graphite or graphene, and a tire innerliner or innertube produced from these elastomeric nanocomposite compositions is disclosed. 1. A nanofiller dispersant composition comprising:(a) the reaction product of: (i) at least one halogenated copolymer comprising units derived from isoolefins having from 4 to 7 carbons and a para-alkylstyrene; and (ii) at least one polycyclic aromatic hydrocarbon (PAH); and(b) at least one nanofiller.2. The composition of claim 1 , wherein the PAH is polynuclear.3. The composition of claim 2 , wherein the PAH is selected from the group consisting of anthracenes claim 2 , pyrenes claim 2 , benzopyrenes claim 2 , coronenes claim 2 , ovalenes claim 2 , and combinations thereof.4. The composition of claim 1 ,wherein the halogenated copolymer is brominated poly(isobutylene-co-p-methylstyrene) (BIMSM),wherein the BIMSM comprises a benzylic bromine functionality, andwherein from 4% to 80% of the benzylic bromine functionality is covalently bonded to the PAH.5. The composition of claim 1 , wherein the PAH comprises a functional group.6. The composition of claim 5 , wherein the functional group is selected from the group consisting of amines claim 5 , alcohols claim 5 , aldehydes claim 5 , alkoxides claim 5 , alkenes claim 5 , carboxylic acids claim 5 , thiols claim 5 , acid halides claim 5 , acid anhydrides claim 5 , aziridines claim 5 , epoxides claim 5 , amides claim 5 , and combinations thereof.7. The composition of claim 6 , wherein the functional group is selected from the group consisting of alkyl amines ...

Chain End Functionalized Polyolefins for Improving Wet Traction and Rolling Resistance of Tire Treads

A functionalized polyolefin and a tire tread composition comprising the functionalized polyolefin is described. The functionalized polyolefin comprises a vinyl/vinylidene-terminated polyolefin in which the vinyl/vinylidene terminus is functionalized with an alkoxysilane or an alkylsilane and optionally having ether, hydroxyl and/or amine functionality. The invention is also directed to the synthesis of vinyl/vinylidene-terminated polyolefins, functionalization at the vinyl/vinylidene terminus with an alkoxysilane or an alkylsilane and optionally having ether, hydroxyl and/or amine functionality. 1. A tire tread composition comprising the reaction product of components , by weight of the composition , within the range from:5 to 75 wt % of a diene elastomer;20 to 80 wt % of filler;a curative agent; and5 to 30 wt % of an aminoalkylsilyl-functionalized polyolefin (PO-aminoalkyl-Si), an alkylsilane-functionalized polyolefin or an alkoxysilane-functionalized polyolefin, or a blend thereof, each having a polyolefin portion and a functional group attached thereto.2. The tire tread composition of claim 1 , wherein the PO-aminoalkyl-Si is a reaction product of an epoxidized vinyl/vinylidene-terminated polyolefin and an any one or mixture of an aminoalkylalkoxysilane claim 1 , an alkylsilane-treated vinyl/vinylidene-terminated polyolefin claim 1 , or an alkoxysilane-treated vinyl/vinylidene-terminated polyolefin.3. The tire tread composition of claim 1 , wherein the filler is a silica-based filler.6. The tire tread composition of claim 1 , wherein the diene elastomer is a styrenic copolymer claim 1 , a polybutadiene claim 1 , natural rubber claim 1 , a polyisoprene claim 1 , a butadiene copolymer claim 1 , an isoprene copolymer or blends thereof.7. The tire tread composition of claim 1 , wherein the polyolefin portion is an ethylene-propylene copolymer.8. The tire tread composition of claim 1 , wherein the polyolefin portion is a copolymer having a C2 content of the polyolefin ...

Stable Star-Structured Functional Polyolefins

Stable star-structured functional polyolefins and methods of making them, the functional polyolefins comprising a polyolefin bound at any position along its chain length to at least one nucleophile-containing silane of the following formula: 2. The star-structured functional polyolefins of claim 1 , wherein R4 is a hydroxyl group and Nu is nitrogen.3. The star-structured functional polyolefins of claim 1 , wherein at least one of R1′ claim 1 , R2′ claim 1 , and R3′ is selected from functional polyolefin moieties.4. The star-structured functional polyolefins of claim 1 , wherein the polyolefin bound to at least one nucleophile-containing silane anywhere along the polyolefin chain is selected from the group consisting of polybutadienes claim 1 , polyisoprenes claim 1 , isobutylene-isoprene copolymer claim 1 , halogenated isobutylene-isoprene copolymer claim 1 , isobutylene-p-methylstyrene copolymer claim 1 , halogenated isobutylene-p-methylstyrene copolymer claim 1 , ethylene-propylene-diene terpolymers claim 1 , vinyl/vinylidene-terminated polypropylenes claim 1 , vinyl/vinylidene-terminated polyethylenes claim 1 , and vinyl/vinylidene-terminated ethylene-propylene copolymers.5. The star-structured functional polyolefins of claim 1 , wherein X is a C1 to C20 linear alkylene claim 1 , or a C1 to C40 branched alkylene.6. The star-structured functional polyolefins of claim 1 , wherein the weight loss after one week at 120° C. is less than 5% of its original Mw.7. A polyolefin blend comprising a polyolefin and within the range from 0.1 wt % to 20 wt % of at least one star-structured functional polyolefin claim 1 , based on the weight of the blend claim 1 , of .8. The polyolefin blend of claim 7 , the star-structured functional polyolefins having a branching number of at least 3.9. A tire tread formulation comprising the star-structured functional polyolefins of claim 1 , at least one elastomer and silica.10. The tire tread formulation of claim 9 , the star-structured ...

Water-Based Polyolefin Corrosion Inhibitors Based on Vinyl/Vinylidene Terminated Polyolefins

A corrosion inhibitor composition useful in pipes, pilings and hulls comprising the reaction product of a vinyl/vinylidene-terminated polyolefin having at least 14 carbon atoms and a polyamine having a molecular weight of at least 500 g/mole. 1. A corrosion inhibitor composition comprising the reaction product of a vinyl/vinylidene-terminated polyolefin having a carbon number of at least 14 and a polyamine having a molecular weight of at least 500 g/mole.2. The corrosion inhibitor composition of claim 1 , wherein the vinyl/vinylidene-terminated polyolefin is first functionalized before reacting with the polyamine.3. The corrosion inhibitor composition of claim 2 , wherein the functionalization converts the vinyl/vinylidene-terminus into an aldehyde claim 2 , a glycol claim 2 , and/or a siloxane.4. The corrosion inhibitor composition of claim 1 , wherein the number average molecular weight (Mn) of the polyamine is within a range from 500 g/mole to 3000 g/mole.5. The corrosion inhibitor composition of claim 1 , wherein the number average molecular weight (Mn) of the vinyl/vinylidene-terminated polyolefin is within a range from 200 g/mole to 10 claim 1 ,000 g/mole.6. The corrosion inhibitor composition of claim 1 , wherein the vinyl/vinylidene-terminated polyolefin is a vinyl/vinylidene-terminated atactic polypropylene or polyethylene claim 1 , or mixture thereof.7. The corrosion inhibitor composition of claim 1 , wherein the polyamine comprises glycol subgroups in the backbone and/or side chains.9. The corrosion inhibitor composition of claim 1 , having a carbon number of greater than 25 carbons.10. The corrosion inhibitor composition of claim 1 , wherein the reaction product is a 1:1 molar ratio of a polyolefin block and a polyamine block claim 1 , the polyolefin block having a number average molecular weight (Mn) within the range from 200 g/mole to 1000 g/mole.11. The corrosion inhibitor composition of claim 1 , formed by the process of:a) reacting the vinyl/ ...

Chain End Functionalized Polyolefins for Improving Wet Traction and Rolling Resistance of Tire Treads

A functionalized polyolefin and a tire tread composition comprising the functionalized polyolefin is described. The functionalized polyolefin comprises a vinyl/vinylidene-terminated polyolefin in which the vinyl/vinylidene terminus is functionalized with an alkoxysilane or an alkylsilane and optionally having ether, hydroxyl and/or amine functionality. The invention is also directed to the synthesis of vinyl/vinylidene-terminated polyolefins, functionalization at the vinyl/vinylidene terminus with an alkoxysilane or an alkylsilane and optionally having ether, hydroxyl and/or amine functionality. 110-. (canceled)11. A functionalized polyolefin comprising a aminoalkylsilyl-functionalized polyolefin (PO-aminoalkyl-Si) , an alkylsilane-functionalized polyolefin , or an alkoxysilane-functionalized polyolefin , each having a polyolefin portion and a functional group attached thereto , wherein the polyolefin portion of the functionalized polyolefin has a weight-average molecular weight (Mw) within the range from 500 to 300 ,000 g/mole.12. The functionalized polyolefin of claim 11 , wherein the aminoalkylsilyl-functionalized polyolefin is the reaction product of a vinyl/vinylidene-terminated polyolefin (VTP) and either a hydrosilylation reagent or an epoxidation reagent followed by treatment with an aminosilane-containing reagent.14. The functionalized polyolefin of claim 13 , wherein the value of “n” is within the range of 50 to 1000.15. The functionalized polyolefin of claim 11 , wherein the functional group is derived from an epoxide claim 11 , an organosilane claim 11 , an organosiloxane claim 11 , an epoxy-siloxane claim 11 , an aminoalkylalkoxysilane claim 11 , or a (3-glycidoxypropyl)-tetraalkyldisiloxane.16. A tire tread composition comprising the functionalized polyolefin of .17. The tire tread composition of claim 16 , further comprising 5 to 75 wt % of a diene elastomer; 5 wt % to 40 wt % of processing oil; and 20 wt % to 60 wt % of filler.18. The tire tread ...

Elastomeric Formulations Comprising Branched EPDM Polymers

A compound suitable for use in producing articles including foamed articles can include 100 parts per hundred rubber (phr) of a branched ethylene propylene diene monomer (EPDM) elastomer comprising 35 wt % to 70 wt % ethylene derived units, 20 wt % to 64 wt % propylene derived units, and 1 wt % to 10 wt % diene derived units, wherein the EPDM elastomer has a Mooney viscosity (ML) (1+4) at 125° C. of 30 MU to 120 MU, a corrected Mooney relaxation area (cMLRA) at 80 ML of 300 MU·sec to 1000 MU·sec, and long chain branching (LCB) g′ (vis) of 0.80 to 1.0; 75 phr to 200 phr of a filler; 25 phr to 125 phr of a processing oil; 5 phr to 50 phr of a curative, and optionally 0.1 phr to 25 phr of a foaming agent.

Poly(alpha-olefin)s and Methods Thereof

The present disclosure relates to poly(alpha-olefin)s and methods for making poly(alpha-olefin)s. A poly(alpha-olefin) may include about 95 wt % or greater C-Calpha-olefin content and have a weight average molecular weight of from about 1,000,000 g/mol to about 10,000,000 g/mol. A method for forming a poly(alpha-olefin) may include introducing one or more C-Calpha-olefins to a catalyst system comprising a catalyst compound and an activator. The method may include obtaining poly(alpha-olefin)s comprising about 95 wt % or greater C-Calpha-olefin content and having a weight average molecular weight of from about 1,000,000 g/mol to about 10,000,000 g/mol. 1. A poly(alpha-olefin) comprising about 95 wt % or greater C-Calpha-olefin content and having a weight average molecular weight of from about 1 ,000 ,000 g/mol to about 10 ,000 ,000 g/mol.2. The poly(alpha-olefin) of claim 1 , wherein the poly(alpha-olefin) has a weight average molecular weight of from about 1 claim 1 ,600 claim 1 ,000 g/mol to about 6 claim 1 ,500 claim 1 ,000 g/mol.3. The poly(alpha-olefin) of claim 1 , wherein the poly(alpha-olefin) has a number average molecular weight of from about 400 claim 1 ,000 g/mol to about 6 claim 1 ,000 claim 1 ,000 g/mol.4. The poly(alpha-olefin) of claim 1 , wherein the poly(alpha-olefin) is selected from a poly(1-decene) claim 1 , a poly(1-dodecene) claim 1 , a poly(1-tetradecene) claim 1 , a poly(1-octadecene).5. The poly(alpha-olefin) of claim 1 , wherein the poly(alpha-olefin) is a random copolymer.6. The poly(alpha-olefin) of claim 1 , wherein the poly(alpha-olefin) has a comonomer content of greater than 0 wt % to about 5 wt % claim 1 , and the comonomer is ethylene claim 1 , propylene claim 1 , or a mixture thereof.7. The poly(alpha-olefin) of claim 1 , wherein the poly(alpha-olefin) has a comonomer content of greater than 0 wt % to about 5 wt % claim 1 , and the comonomer is a C-Calpha-olefin claim 1 , or a mixture thereof.8. The poly(alpha-olefin) of claim 1 , ...

Propylene Ethylene Diene Terpolymer Polyolefin Additives for Improved Tire Tread Performance

Elastomeric compositions comprising propylene-ethylene-diene terpolymer based polyolefin additives useful in tire tread compositions. The elastomeric compositions comprise 100 phr (parts by weight per hundred parts of total elastomer) diene elastomers; about 0 to about 80 phr of processing oil; 0 to about 80 phr of a hydrocarbon resin; about 60 to about 140 phr of filler; a curative agent; and about 5 to about 30 phr of a silane functionalized propylene-ethylene-diene terpolymer. The silane functionalized propylene-ethylene-diene terpolymer comprises from about 2 wt. % to about 40 wt. % of ethylene and/or C-Cα-olefins derived units, from 0.5 to 10 wt % of diene derived units, and a silane coupling agent. The present elastomeric compositions are useful as tire tread compositions for improved tire performance. 1. An elastomeric composition comprising , per 100 parts by weight of rubber (phr): about 100 phr of a diene elastomer; 0 to about 80 phr of processing oil; 0 to about 80 phr of a hydrocarbon resin; about 60 to about 140 phr of filler; a curative agent; and about 5 to about 30 phr of a silane functionalized propylene-ethylene-diene terpolymer comprising from about 2 to about 40 wt % of ethylene and/or C-Cα-olefins derived units , and from about 0.5 to about 10 wt % of diene derived units.2. The elastomeric composition of claim 1 , wherein the filler is a silica-based filler.3. The elastomeric composition of claim 1 , wherein the filler is a carbon black filler.4. The elastomeric composition of claim 1 , wherein the filler is blend of silica-based filler and a carbon black filler.5. The elastomeric composition of claim 1 , wherein the propylene-ethylene-diene terpolymer contains from 0.5 wt % to 10 wt % ethylidene norbornene based on the terpolymer.6. The elastomeric composition of claim 1 , wherein the propylene-ethylene-diene terpolymer contains from 2 wt % to 20 wt % ethylene based on the terpolymer.7. The elastomeric composition of claim 1 , wherein the ...

Graft Engineering Thermoplastics With Polyolefins

A graft copolymer comprising polyolefin and engineering thermoplastic components, wherein the thermoplastic component is a polymer comprising heteroatoms or heteroatom containing moieties in its backbone and phenyl or substituted phenyl groups, the polyolefin component covalently bound to the engineering thermoplastic component. The graft copolymer is the reaction product of an engineering thermoplastic having at least one phenylene in the polymer backbone, and a vinyl/vinylidene terminated polyolefin having a weight average molecular weight of at least 300 g/mole, wherein the vinyl/vinylidene terminated polyolefin is selected from polyethylenes, polypropylenes, ethylene-propylene copolymers, polyisobutylenes, polydienes, propylene-based elastomers, ethylene-based plastomers, and combinations thereof. 2. The graft copolymer of claim 1 , wherein the electron-donating substituents are selected from the group consisting of Cto Calkyls claim 1 , Cto Calkoxys claim 1 , Cto Cmercaptans claim 1 , chlorine claim 1 , bromine claim 1 , iodine claim 1 , hydroxyl claim 1 , and combinations thereof.3. The graft copolymer of claim 1 , wherein the A claim 1 , B claim 1 , C claim 1 , and D substituents are selected from the group consisting of Cto Ccarboxy-containing moieties claim 1 , Cto Cimido-containing moieties claim 1 , Cto Csulfido-containing moieties claim 1 , sulfur claim 1 , sulfide claim 1 , carboxy claim 1 , carboxylate claim 1 , imido claim 1 , nitrogen claim 1 , and combinations thereof.4. The graft copolymer of claim 1 , wherein the A claim 1 , B claim 1 , C claim 1 , and D substituents are selected from the group consisting of —CH—NH—CO—(CH)—CH— claim 1 , —OCOO— claim 1 , CO— claim 1 , pyromellitic diimidos claim 1 , —SO— claim 1 , sulfur claim 1 , oxygen claim 1 , nitrogen claim 1 , phosphorous claim 1 , and combinations thereof.5. The graft copolymer of claim 1 , wherein the ratio of the polyolefin component to the engineering thermoplastic component in the graft ...

Dual Metallocene-Catalyzed Bimodal Copolymer Compositions

This application relates to copolymer compositions and copolymerization processes. The processes may use two different metallocene catalysts: one capable of producing high molecular weight copolymers; and one suitable for producing lower molecular weight copolymers having at least a portion of vinyl terminations, and the copolymer compositions produced thereby. Copolymer compositions may comprise (1) a first ethylene copolymer fraction having high molecular weight, exhibiting branching topology, and having relatively lower ethylene content (based on the weight of the first ethylene copolymer fraction); and (2) a second ethylene copolymer fraction having low molecular weight, exhibiting linear rheology, and having relatively higher ethylene content (based on the weight of the second ethylene copolymer fraction). It is believed that the unique combination of these properties provides a copolymer composition with advantageous viscosity modifying properties, such as an excellent combination of shear thinning and fuel economy, as well as high thickening efficiency. 1. A bimodal ethylene copolymer composition comprising:{'sub': 3', '12', 'first, '(a) a first ethylene copolymer fraction comprising units derived from ethylene and one or more C-Cα-olefins, and having (i) ethylene-derived content (C2) within the range from 40 wt % to 60 wt %, based on the content of monomer-derived units in the first ethylene copolymer fraction; (ii) weight average molecular weight (Mw) within the range from 100,000 to 750,000 g/mol; and (iii) branching index g′ of less than or equal to 0.95; and'}{'sub': 3', '12', 'first, '(b) a second ethylene copolymer fraction having units derived from ethylene and one or more C-Cα-olefins, and having (i) ethylene-derived content greater than or equal to C2+3 wt %, based on the content of monomer-derived units in the second ethylene copolymer fraction; (ii) Mw at least 50,000 g/mol less than the Mw of the first ethylene copolymer fraction;'}and (iii) ...

Branched EPDM Polymers Produced Via Use of Vinyl Transfer Agents and Processes for Production Thereof

This invention relates to the use of quinolinyldiamido transition metal complexes and catalyst systems with an activator and a metal hydrocarbenyl chain transfer agent, such as an aluminum vinyl-transfer agent (AVTA), to produce branched propylene-ethylene-diene terpolymers. 2. The process of claim 1 , wherein M is Ti claim 1 , Zr claim 1 , or Hf.3. The process of wherein E is carbon.6. The process of claim 5 , wherein M is Hf and t is 3.7. The process of wherein:{'sup': 61', '66, 'Rto Rare hydrogen.'}{'sup': 70', '71, 'Rand Rare independently hydrogen,'}{'sup': 54', '55', '54', '55, 'one or both Ror Ris hydrogen, or one of Ror Ris hydrogen and the other is an aryl group or substituted aryl group;'}{'sup': 52', '51, 'Rand Rare independently aryl or substituted aryl;'}8. The process of wherein Ris 2 claim 6 ,6-diisopropylphenyl claim 6 , 2 claim 6 ,6-diethylphenyl claim 6 , 2 claim 6 ,6-dimethylphenyl claim 6 , or mesityl claim 6 , and R2-tolyl claim 6 , 2-ethylphenyl claim 6 , 2-propylphenyl claim 6 , 2-trifluoromethylphenyl claim 6 , 2-fluorophenyl claim 6 , mesityl claim 6 , 2 claim 6 ,6-diisopropylphenyl claim 6 , 2 claim 6 ,6-diethylphenyl claim 6 , 2 claim 6 ,6-dimethylphenyl claim 6 , or 3 claim 6 ,5-di-tert-butylphenyl.9. The process of wherein R claim 6 , R claim 6 , Rto R claim 6 , R claim 6 , and Rare hydrogen claim 6 , Ris phenyl claim 6 , Ris 2 claim 6 ,6-diisopropylphenyl and t is 2.10. The process of claim 1 , wherein the activator comprises an alumoxane and or a non-coordinating anion.11. The process of claim 1 , wherein the activator comprises one or more of: alumoxane claim 1 , trimethylammonium tetrakis(perfluoronaphthyl)borate claim 1 , N claim 1 ,N-dimethylanilinium tetrakis(perfluoronaphthyl)borate claim 1 , N claim 1 ,N-diethylanilinium tetrakis(perfluoronaphthyl)borate claim 1 , triphenylcarbenium tetrakis(perfluoronaphthyl)borate claim 1 , trimethylammonium tetrakis(perfluorobiphenyl)borate claim 1 , N claim 1 ,N-dimethylanilinium tetrakis( ...

Comb-Block Copolymers of Isobutylene Copolymer Backbone with Functional Polymer Comb Arms

Comb-block copolymers of isobutylene copolymer backbone with functional comb arms, methods for making a comb-block copolymer comprising polymerizing one or more monomer components comprising units derived from at least one of acrylates, vinyl terminated Cto Caromatics, acrylamides, and acrylonitrile using a halogenated copolymer initiator having a benzylic-halide moiety via atom transfer radical polymerization (ATRP) in the presence of a transition metal complex catalyst at a temperature ranging from 30° C. to 150° C., the use of these comb-block copolymers as a tire tread additive, as a nanofiller dispersant in elastomeric nanocomposite compositions comprising halobutyl rubber, as a surfactant, as a sealant, and as an additive in a latex formulation is disclosed. 1. A comb-block copolymer comprising:(a) a polymeric backbone having a number average molecular weight ranging from 100,000 to 350,000 g/mol, wherein the polymeric backbone comprises at least one halogenated copolymer comprising units derived from isoolefins having from 4 to 7 carbons and a para-alkylstyrene; and(b) one or more polymeric comb arms comprising at least one functional polymer, wherein the functional polymer comprises units derived from at least one of acrylates, acrylamides, and acrylonitrile.2. The comb-block copolymer of claim 1 , wherein the polymeric backbone has a weight average molecular weight ranging from 300 claim 1 ,000 to 750 claim 1 ,000 g/mol claim 1 , and wherein each of the one or more polymeric comb arms has a weight average molecular weight ranging from 2 claim 1 ,000 to 400 claim 1 ,000 g/mol.3. The comb-block copolymer of claim 1 , wherein the comb-block copolymer has a molecular weight distribution (Mw/Mn) ranging from 1.2 to 3.0.4. The comb-block copolymer of claim 1 , wherein the comb-block copolymer has from 10 to 550 polymeric comb arms.5. The comb-block copolymer of claim 1 , wherein the halogenated copolymer is brominated poly(isobutylene-co-p-methylstyrene) (BIMSM). ...

Polypropylene Compositions and Methods to Produce the Same

Compositions comprising a continuous phase of at least one polypropylene; within the range of from 5 wt % to 50 wt % of a mineral hydroxide filler by weight of the composition, having an aspect ratio within the range of from 5 or 6 or 8 to 20 or 40 or 100 or 200 or 800 or 1000; and within the range of from 5 wt % to 40 wt % of a olefin block-containing copolymer by weight of the composition. Also described is a method of forming the compositions comprising combining the components as “masterbatches” or as neat ingredients, or some combination thereof. 1. A composition comprising a continuous phase of polypropylene;within the range of from 5 wt % to 50 wt % of a mineral hydroxide filler by weight of the composition, having an aspect ratio within the range of from 5 to 1000; andwithin the range of from 5 wt % to 40 wt % of a olefin block-containing copolymer by weight of the composition.2. The composition of claim 1 , wherein the mineral hydroxide filler is a metal salt of an oxysulfate claim 1 , aluminoxysulfate claim 1 , aluminosilicate claim 1 , silicate claim 1 , borate claim 1 , or combination thereof.3. The composition of claim 1 , wherein the olefin block-containing copolymer is selected from the group consisting of styrene-butadiene-styrene block copolymers claim 1 , styrene-isoprene-styrene block copolymers claim 1 , styrene-ethylene/propylene-styrene block polymers claim 1 , styrene-ethylene/butene/styrene block polymers claim 1 , and hydrogenated versions thereof and blends thereof.4. The composition of claim 1 , wherein the olefin block-containing copolymer is a styrene-olefin block copolymer having within the range of from 5 wt % to 25 wt % styrene-derived units by weight of the copolymer claim 1 , which may or may not be hydrogenated.5. The composition of claim 1 , wherein the polypropylene has a MFR within the range of from 4 g/10 min to 100 g/10 min.6. The composition of claim 1 , wherein the polypropylene has a melting point temperature (“T” claim 1 , ...

Crosslinked Rubber Dispersion in Thermoplastic Vulcanizates

Use of twin screw extrusion to further enhance the uniformity of crosslinked rubber dispersion in thermoplastic vulcanizates (TPVs) to improve elastic properties of TPVs is disclosed. Most specifically, this invention employs intermeshing twin screw extruders to further homogenize dynamically vulcanized rubber dispersions in TPVs so that their particle size dispersion index (PSDI), or the ratio of weight average equivalent dispersion particle diameter to number average equivalent dispersion particle diameter, can be lowered to less than 1.6 or 1.57 with corresponding elastic property improvements by having lower hysteresis, higher elongation to break, and higher retractive force. TPV products having lower PSDI and improved elastic properties, and apparatus for conducting the disclosed method, are also provided. 1. A method for processing a thermoplastic vulcanizate (TPV) composition comprisinga) melting at least one selected TPV composition, and if more than one TPV composition is selected then combining the TPV compositions before or after melting, to form a TPV melt; andb) mixing the TPV melt in an intermeshing twin-screw extruder at a temperature sufficient to maintain the TPV composition in the melted state to obtain a TPV re-extrudate; andc) recovering the TPV re-extrudate.2. The method of claim 1 , in which the temperature in step b) is from 86° F. (30° C.) above the melting temperature of the plastic matrix of the TPV up to the degradation temperature of the plastic matrix of the TPV.3. The method of claim 1 , in which the temperature in step b) is from 86° F. (30° C.) above the melting temperature of the plastic matrix of the TPV up to 122° F. (50° C.) above the melting temperature of the plastic matrix of the TPV.4. The method of claim 1 , in which the plastic matrix is polypropylene-based and the temperature in step b) is from 350-580° F. (180-300° C.).5. The method of claim 1 , in which the torque of the twin screw extruder is from 20-80% of the maximum ...

Lubricating Oil Compositions Comprising Dual Metallocene-Catalyzed Bimodal Copolymer Compositions Useful as Viscosity Modifiers

This application relates to copolymer compositions and copolymerization processes, as well as to lubricating oil compositions comprising such copolymer compositions as viscosity index improvers, and base oil. The copolymer compositions may be made using two different metallocene catalysts: one capable of producing high molecular weight copolymers; and one suitable for producing lower molecular weight copolymers having at least a portion of vinyl terminations, and the copolymer compositions produced thereby. Copolymer compositions may comprise (1) a first ethylene copolymer fraction having high molecular weight, exhibiting branching topology, and having relatively lower ethylene content (based on the weight of the first ethylene copolymer fraction); and (2) a second ethylene copolymer fraction having low molecular weight, exhibiting linear rheology, and having relatively higher ethylene content (based on the weight of the second ethylene copolymer fraction). Lubricating oil compositions comprising such copolymer compositions may exhibit superior viscosity properties. 1. A lubricating oil composition comprising a base oil and a bimodal ethylene copolymer composition; [{'sub': 3', '12', 'first, '(a) a first ethylene copolymer fraction comprising units derived from ethylene and one or more C-Cα-olefins, and having (i) ethylene-derived content (C2) within the range from 40 wt % to 60 wt %, based on the content of monomer-derived units in the first ethylene copolymer fraction; (ii) weight average molecular weight (Mw) within the range from 100,000 to 750,000 g/mol; and (iii) branching index g′ of less than or equal to 0.95; and'}, {'sub': 3', '12', 'first, '(b) a second ethylene copolymer fraction having units derived from ethylene and one or more C-Cα-olefins, and having (i) ethylene-derived content greater than or equal to C2+3 wt %, based on the content of monomer-derived units in the second ethylene copolymer fraction; (ii) Mw at least 50,000 g/mol less than the Mw of ...

Compositions Comprising Propylene-Based Elastomers and Polyalphaolefins

Provided are compositions comprising a propylene-based elastomer and a polyalphaolefin. The compositions may be particularly useful in elastic film compositions, and especially useful as elastic film layers in nonwoven laminates.

Themoplastic vulcanizate compositions

A thermoplastic vulcanizate comprises an isotactic polypropylene matrix phase in which cross-linked rubber particles are dispersed, the rubber particles comprising an ethylene-propylene-diene terpolymer (EPDM) containing at least 40 wt% of ethylene-derived units. A propylene-ethylene-diene terpolymer (PEDM) containing at least 60 wt% propylene-derived units and less than or equal to 25 wt% of ethylene-derived units and having a heat of fusion (Hf) of 2 to 10 J/g is added to compatibilize the propylene/EPDM blend.

Polyolefin compositions

A composition comprising vinyl-terminated polyethylene having an Mn from about 200 g/mol to about 10,000 g/mol; and a comb polyolefin having polyethylene arms attached to a random copolymer backbone, said backbone including units derived from an alpha-olefin having 3 or more carbon atoms, where the polyethylene arms have an Mn from about 200 g/mol to about 10,000 g/mol, and where the comb polyolefin has an Mp from about 7,500 to about 400,000 g/mol.

Process for production of thermoplastic vulcanizates using supported catalyst systems and compositions made therefrom

The present disclosure provides a catalyst system comprising the product of a catalyst compound capable of making crystalline material (such as isotactic PP) and a second catalyst compound capable of making non-diene-containing-amorphous material and diene-containing- elastomeric material. The catalyst system of the present disclosure may further comprise a support material (or product thereof) having one or more of: a surface area of from 400 m 2 /g to 800 m 2 /g; an average pore diameter of 90 Angstroms or greater; an average particle size of 60 μm or greater; 40% or greater of the incremental pore volume comprising pores having a pore diameter larger than 100 Angstroms or greater; and sub-particles having an average particle size in the range of 0.01 μm to 5 μm. In another embodiment, a propylene polymer composition includes: isotactic polypropylene; 5 wt% or greater of atactic polypropylene, based on the weight of the composition; and an ethylene- propylene-diene terpolymer. The present disclosure further provides methods for forming propylene polymer compositions.

Elastomeric propylene-alpha-olefin-diene terpolymer compositions

A propylene-α-olefin-diene (PEDM) terpolymer may comprise 75 to 95 wt% propylene, 5 to 20 wt% α-olefin, and 0.5 to 5 wt% diene, said wt% based on the weight of the PEDM terpolymer. The propylene-α-olefin-diene terpolymer may be blended with an ethylene- based copolymer and optionally a variety of additives to form an elastomeric composition. An exemplary elastomeric composition includes 5 to 40 parts by weight per hundred parts by weight rubber (phr) of the PEDM terpolymer, 60 to 95 phr of the ethylene-based copolymer, and optionally additives like carbon black, zinc dimethacrylate, paraffinic oil, zinc oxide, and/or zinc stearate.

Modified polyethylene film compositions

The present invention relates to polyethylene compositions comprising one or more ethylene polymers and one or more dendritic hydrocarbon polymer modifiers, in particular, this invention further relates to polyethylene blends comprising one or more ethylene polymers and one or more dendritic hydrocarbon polymer modifiers, wherein the modifier has: 1) a g′ value less than 0.75; 2) a Cayley tree topology with a layer number of 2 or more more; and 3) a average Mw between the branch points of 1,500 g/mol or more.

Tire innerliners having improved cold temperature properties

Provided are elastomeric compositions, such as a tire innerliner, comprising at least one isobutylene based elastomer and at least one hydrocarbon fluid additive (“HFA”). The compositions have improved cold temperature properties and are particularly useful as tire innerliners for an aircraft tire. The use of a HFA in the elastomeric composition may allow for the use of reduced amounts of secondary elastomers, such as natural rubber, while allowing for an improved balance in the composition's brittleness and permeability properties. Examples of useful HFAs include polyalphaolefins, high purity hydrocarbon fluids, and water white group III mineral oils.

Oriented thermoplastic vulcanizate

Orientált fóliákat állítanak elő. Ismertetnek egy termoplasztikusvulkanizátumot, amely a készítmény össztömegére vonatkoztatva legalább20 tömeg% hőre keményedő gumi termoplasztikus polimerbe valóbekeverésével van előállítva. Az elegy előállítása után a hőrekeményedő gumi diszkrét részecskék formájában van jelen a folytonostermoplasztikus polimer fázisban. A kapott kompozitot feszítésnekvetik alá húzással, fóliafúvással vagy egyéb fóliakészítésieljárással, ismert módon. Ez a feszítés a folytonos fázisban lévőpolimer molekulákat rendezetté vagy orientálttá teszi abban azirányban, amelyben a feszítést alkalmazták, ezáltal találmány szerintiorientált termoplasztikus vulkanizátumot kapnak. Ez az anyag javítottgázáteresztő képességgel és javított flexibilitási tulajdonságokkalrendelkezik. Ó Oriented films are produced. A thermoplastic vulcanizate is prepared which is prepared by incorporating at least 20% by weight of thermosetting rubber, based on the total weight of the composition, into a thermoplastic polymer. After the mixture is prepared, the thermosetting rubber is present in the form of discrete particles in the continuous thermoplastic polymer phase. The resulting composite is subjected to tension by drawing, film blowing or other film making methods in a known manner. This stretching makes the continuous phase polymer molecules ordered or oriented in the direction in which the stretching is applied, thereby obtaining an oriented thermoplastic vulcanizate according to the invention. This material has improved gas permeability and improved flexibility properties. SHE

Elastomeric propylene-alpha-olefin-diene terpolymer compositions

A propylene-α-olefin-diene (PEDM) terpolymer may comprise 75 to 95 wt% propylene, 5 to 20 wt% α-olefin, and 0.5 to 5 wt% diene, said wt% based on the weight of the PEDM terpolymer. The propylene-α-olefin-diene terpolymer may be blended with an ethylene- based copolymer and optionally a variety of additives to form an elastomeric composition. An exemplary elastomeric composition includes 5 to 40 parts by weight per hundred parts by weight rubber (phr) of the PEDM terpolymer, 60 to 95 phr of the ethylene-based copolymer, and optionally additives like carbon black, zinc dimethacrylate, paraffinic oil, zinc oxide, and/or zinc stearate.

Dual metallocene-catalyzed bimodal copolymer compositions

This application relates to copolymer compositions and copolymerization processes. The processes may use two different metallocene catalysts: one capable of producing high molecular weight copolymers; and one suitable for producing lower molecular weight copolymers having at least a portion of vinyl terminations, and the copolymer compositions produced thereby. Copolymer compositions may comprise (1) a first ethylene copolymer fraction having high molecular weight, exhibiting branching topology, and having relatively lower ethylene content (based on the weight of the first ethylene copolymer fraction); and (2) a second ethylene copolymer fraction having low molecular weight, exhibiting linear rheology, and having relatively higher ethylene content (based on the weight of the second ethylene copolymer fraction). It is believed that the unique combination of these properties provides a copolymer composition with advantageous viscosity modifying properties, such as an excellent combination of shear thinning and fuel economy, as well as high thickening efficiency.

Preparation of bimodal rubber, thermoplastic vulcanizates, and articles made therefrom

Lubricating oil compositions comprising dual metallocene-catalyzed bimodal copolymer compositions useful as viscosity modifiers

This application relates to copolymer compositions and copolymerization processes, as well as to lubricating oil compositions comprising such copolymer compositions as viscosity index improvers, and base oil. The copolymer compositions may be made using two different metallocene catalysts: one capable of producing high molecular weight copolymers; and one suitable for producing lower molecular weight copolymers having at least a portion of vinyl terminations, and the copolymer compositions produced thereby. Copolymer compositions may comprise (1) a first ethylene copolymer fraction having high molecular weight, exhibiting branching topology, and having relatively lower ethylene content (based on the weight of the first ethylene copolymer fraction); and (2) a second ethylene copolymer fraction having low molecular weight, exhibiting linear rheology, and having relatively higher ethylene content (based on the weight of the second ethylene copolymer fraction). Lubricating oil compositions comprising such copolymer compositions may exhibit superior viscosity properties.

Lubricating oil compositions comprising dual metallocene-catalyzed bimodal copolymer compositions useful as viscosity modifiers

Propylene-olefin copolymers and methods for making the same

Alternating block copolymer and process for making

Provided is an alternating block copolymer. The alternating block copolymer has an olefin polymer block and an poly(alkyl methacrylate) block. The olefin polymer block has monomeric units of one or more alpha olefins of 2 to 12 carbon atoms that make up 90 wt% or more of the total weight of the olefin polymer block. The olefin polymer block exhibits a number average molecular weight of the olefin polymer block is 1000 to 500,000. The poly( alkyl methacrylate) block has monomeric units of one or more alkyl methacrylates with alkyl side chains of 1 to 100 carbon atoms that make up 90 wt% or more of the total weight of the poly(alkyl methacrylate) block. The poly(alkyl methacrylate) block exhibits a number average molecular weight of 1000 to 500,000. There is also provided a lubricant composition containing the alternating block copolymer and a process for making the alternating block copolymer.

Compatibilized tire tread compositions

A polyolefin-polybutadiene block-copolymer and a tire tread composition comprising the polyolefin-polybutadiene block-copolymer, the composition comprising, by weight of the composition, within the range from 15 to 60 wt% of a styrenic copolymer, processing oil, filler, a curative agent, and from 4 to 20 wt% of a polyolefin-polybutadiene block-copolymer, wherein the polyolefin-polybutadiene block-copolymer is a block copolymer having the general formula PO— XL— fPB; where "PO" is a polyolefin block having a weight average molecular weight within the range from 1000 to 150,000 g/mole, the "fPB" is a functionalized polar polybutadiene block having a weight average molecular weight within the range from 500 to 30,000 g/mole, and "XL" is a cross-linking moiety that covalently links the PO and fPB blocks; and wherein the maximum Energy Loss (Tangent Delta) of the immiscible polyolefin domain is a temperature within the range from -30°C to 10°C.

Block copolymers of polyacrylates and polyolefins

A polyacrylate-polyolefin block copolymer and composition for volatile solvent-free coating comprising such compounds having the following structure: wherein "PO" is a polyolefin having a number average molecular weight of at least 300 g/mole, and "Ar" is selected from the group consisting of C6 to C20 aryls, a C7 to C32 alkylaryls, a C6 to C20 aryloxys, and halogen substituted C6 to C20 aryls and C7 to C32 alkylaryls, while the other variables are as described herein. The block copolymers can be produced in an alkylation reaction between the desired polyacrylate and a vinyl/vinylidene- terminated polyolefin.

Chain end functionalized polyolefins for improving wet traction and rolling resistance of tire treads

A functionalized polyolefin and a tire tread composition comprising the functionalized polyolefin is described. The functionalized polyolefin comprises a vinyl/vinylidene-terminated polyolefin in which the vinyl/vinylidene terminus is functionalized with an alkoxysilane or an alkylsilane and optionally having ether, hydroxyl and/or amine functionality. The invention is also directed to the synthesis of vinyl/vinylidene-terminated polyolefins, functionalization at the vinyl/vinylidene terminus with an alkoxysilane or an alkylsilane and optionally having ether, hydroxyl and/or amine functionality.

Graft engineering thermoplastics with polyolefins

A graft copolymer comprising polyolefin and engineering thermoplastic components, wherein the thermoplastic component is a polymer comprising heteroatoms or heteroatom containing moieties in its backbone and phenyl or substituted phenyl groups, the polyolefin component covalently bound to the engineering thermoplastic component. The graft copolymer is the reaction product of an engineering thermoplastic having at least one phenylene in the polymer backbone, and a vinyl/vinylidene terminated polyolefin having a weight average molecular weight of at least 300 g/mole, wherein the vinyl/vinylidene terminated polyolefin is selected from polyethylenes, polypropylenes, ethylene-propylene copolymers, polyisobutylenes, polydienes, propylene-based elastomers, ethylene-based plastomers, and combinations thereof.

Modified polyethylene blown film compositions having excellent bubble stability

The present invention relates to polyethylene compositions comprising one or more ethylene polymers and one or more dendritic hydrocarbon polymer modifiers, in particular, this invention further relates to polyethylene blends comprising one or more ethylene polymers and one or more dendritic hydrocarbon polymer modifiers, wherein the modifier has: 1) a g' vis value less than 0.75; 2) at least 0.6 ppm ester groups as determined by 1 H NMR; 3) a Tm of 100 °C or more; 4) an Mw of 50,000 g/mol or more, as determined by GPC; 5) an average number of carbon atoms between branch points of 70 or more as determined by 1 H NMR.

Modified polyethylene film compositions

The present invention relates to polyethylene compositions comprising one or more ethylene polymers and one or more dendritic hydrocarbon polymer modifiers, in particular, this invention further relates to polyethylene blends comprising one or more ethylene polymers and one or more dendritic hydrocarbon polymer modifiers, wherein the modifier has: 1) a g' value less than 0.75; 2) a Cayley tree topology with a layer number of 2 or more; and 3) a average Mw between the branch points of 1,500 g/mol or more.

Tire Innerliners Having Improved Cold Temperature Properties

Provided are elastomeric compositions, such as a tire innerliner, comprising at least one isobutylene based elastomer and at least one hydrocarbon fluid additive (“HFA”). The compositions have improved cold temperature properties and are particularly useful as tire innerliners for an aircraft tire. The use of a HFA in the elastomeric composition may allow for the use of reduced amounts of secondary elastomers, such as natural rubber, while allowing for an improved balance in the composition's brittleness and permeability properties. Examples of useful HFAs include polyalphaolefins, high purity hydrocarbon fluids, and water white group III mineral oils.

Compositions comprising propylene-based elastomers and polyalphaolefins

Provided are compositions comprising a propylene-based elastomer and a polyalphaolefin. The compositions may be particularly useful in elastic film compositions, and especially useful as elastic film layers in nonwoven laminates.

Elastic blends comprising elastic crystalline polymer and crystallizable polymers for ethylene

Hetero phase polymer blends are contemplated having a continuous phase of a propylene rich polymer and a dispersed phase of an ethylene polymer, or the dispersed phase can be another propylene rich polymer, or the dispersed phase may be a blend of an ethylene rich polymer and a propylene rich polymer. The crystallinity type of the continuous and dispersed phases are different. The blends exhibit ratio of the 500 % tensile modulus of the blend to the 500 % tensile modulus of the propylene rich polymer component (of the continuous phase), unblended, of ≤ 1.6 at a tension set of ≤ 98 %. The blends may exhibit low flexural modulus properties, generally ≤ 140,000 psi. The propylene rich polymer of the continuous phase also may exhibit a heptane insoluble level < 88 %. Films, fibers, fabrics, and molded articles are among the contemplated uses of the polymer blends.

Comb-block high density polyethylenes and methods of making them

A process for preparing a polyethylene composition comprising contacting ethylene with a first salan catalyst precursor and an activator to form branched vinyl/vinylidene-terminated high density polyethylene having a number average molecular weight (Mn) of at least 5,000 g/mole; and contacting the branched vinyl/vinylidene-terminated high density polyethylene with ethylene and a second metallocene catalyst precursor and an activator to form a comb-block HDPE. The polyethylene composition comprises a polyethylene backbone, and one or more branched high density polyethylene combs pendant to the backbone, the combs having an Mn of at least 5,000 g/mole, where the polyethylene has a branching index (g') of less than 0.9.

Preparation of bimodal rubber, thermoplastic vulcanizates, and articles made therefrom

Pellet-stable olefmic copolymer bimodal rubber is made using parallel reactors, with one reactor synthesizing higher molecular weight (MW) rubber with dual catalysts, with an improved molecular weight split ratio and an improved composition distribution of the moderate and ultra-high MW components, while another reactor synthesizes random isotactic polypropylene copolymer (RCP). The effluents are reactor-blended and result in pellet-stable bimodal rubber (P-SBR), which may be pelletized. When making thermoplastic vulcanizates (TP Vs) with P-SBR, the need to granulate rubber bales and subsequently use talc, clay, or other anti-agglomeration agents to prevent granulated rubber crumbs from agglomerating are eliminated. TPV s made with P-SBR have vulcanized rubber particles that are smaller and more uniform in size, resulting in TPVs with higher particle counts and more thermoplastic "ligaments" between the particles, with such ligaments being made stronger by the added RCP. Such thus-produced TPVs have a lower hysteresis and flexural modulus, and better elastic properties.

Propylene-olefin copolymers and methods for making the same

Provided is a composition having 70 wt% to 90 wt% of a first propylene-olefin copolymer component having an ethylene content of 15 to 21 wt%; and 10 wt% to 30 wt% of a second propylene-olefin copolymer component having an ethylene content of 6 to 10 wt%; wherein the weight average molecular weight of the first component is 250,000 to 1,780,000 g/mol higher than the weight average molecular weight of the second component; wherein the reactivity ratio product of the first component is less than 0.75; wherein the reactivity ratio product of the second component is greater than or equal to 0.75.

Propylene-alpha olefin copolymers and methods for making the same

Provided is a composition having 60 wt% to 95 wt% of a first propylene alpha- olefin copolymer component having a reactivity ratio product of less than 0.75 and a weight average molecular weight of greater than about 450,000 g/mol; and 5 wt% to 40 wt% of a second propylene alpha-olefin copolymer component having a reactivity ratio of greater than 1.5 and a weight average molecular weight of less than about 215,000 g/mol.

Dual metallocene-catalyzed bimodal copolymer compositions

This application relates to copolymer compositions and copolymerization processes. The processes may use two different metallocene catalysts: one capable of producing high molecular weight copolymers; and one suitable for producing lower molecular weight copolymers having at least a portion of vinyl terminations, and the copolymer compositions produced thereby. Copolymer compositions may comprise (1) a first ethylene copolymer fraction having high molecular weight, exhibiting branching topology, and having relatively lower ethylene content (based on the weight of the first ethylene copolymer fraction); and (2) a second ethylene copolymer fraction having low molecular weight, exhibiting linear rheology, and having relatively higher ethylene content (based on the weight of the second ethylene copolymer fraction). It is believed that the unique combination of these properties provides a copolymer composition with advantageous viscosity modifying properties, such as an excellent combination of shear thinning and fuel economy, as well as high thickening efficiency.

Lubricating oil compositions comprising dual metallocene-catalyzed bimodal copolymer compositions useful as viscosity modifiers

This application relates to copolymer compositions and copolymerization processes, as well as to lubricating oil compositions comprising such copolymer compositions as viscosity index improvers, and base oil. The copolymer compositions may be made using two different metallocene catalysts: one capable of producing high molecular weight copolymers; and one suitable for producing lower molecular weight copolymers having at least a portion of vinyl terminations, and the copolymer compositions produced thereby. Copolymer compositions may comprise (1) a first ethylene copolymer fraction having high molecular weight, exhibiting branching topology, and having relatively lower ethylene content (based on the weight of the first ethylene copolymer fraction); and (2) a second ethylene copolymer fraction having low molecular weight, exhibiting linear rheology, and having relatively higher ethylene content (based on the weight of the second ethylene copolymer fraction). Lubricating oil compositions comprising such copolymer compositions may exhibit superior viscosity properties.