Exxonmobil Chemical Patents Inc.

Ian C Stewart

Edward John Blok

David T Harris

Jingwen Zhang

Jo Ann M Canich

Yong Yang

Anthony Jay Dias

Mun Fu Tse

John Robert Hagadorn

Andy Haishung Tsou

Alexander Z Voskoboynikov

Dmitry Vadimovich Uborsky

Shuji Luo

Charles James Ruff

Ilya S Borisov

Bogdan A Guzeev

Daniel L Bilbao

Carlos U DeGracia

Patrick Brant

Liehpao O Farng

Sunny Jacob

Jian Yang

George Rodriguez

Crisita Carmen H Atienza

Yuan-Ju Chen

Patrick J Palafox

Steven D Brown

Olivier Jean Georjon

Aaron M Hollas

Jiemin Lu

Olivier JF Georjon

Edward J Blok

Andy H Tsou

Liehpao Oscar Farng

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.

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

A tire tread composition is disclosed. The tire tread composition includes components, by weight of the composition, within the range from: 5 to 75 wt % of a diene elastomer; 0 to 40 wt % of processing oil; 20 to 80 wt % of filler; a curative agent; and 5 to 30 wt % of a propylene-ethylene-diene terpolymer containing from 2 wt % to 40 wt % of ethylene and/or C-C&#x3b1;-olefins derived units, from 0.5 to 10 wt % of diene derived units, and having a heat of fusion, as determined by DSC, of from 0 J/g to 80 J/g.

Propylene-based polymer additives for improved tire tread performance

An elastomeric article comprising an olefin-block copolymer comprising within a range from 4 to 40 mol % of C4 to C12 &#x3b1;-olefin derived units, the remainder being ethylene-derived units, wherein the melting point temperature (T) is within a range from 92&#xb0; C. to 120&#xb0; C., and having an M/Mvalue of less than 2.5. The olefin-block copolymer is desirably generated by combining ethylene, C4 to C12 &#x3b1;-olefins, a single site catalyst, preferably a fluxional catalyst, and an activator. The elastomeric article may be an elastic hygiene garment, especially a garment comprising a waistband, stretch ear panels and/or belly bands.

Olefin-block copolymers and their use in elastomeric articles

Disclosed are novel hafnium-based metallocene catalyst compounds with the following characteristics: 1) 4,5-dialkyl substitutions on a fluorenyl ligand, and optionally additional substitutions, 2) a cyclopentadienyl ligand, optionally with substitutions, and 3) a bridging group from group 14 of the Periodic Table. Also disclosed are catalyst systems comprising such catalyst compounds and their uses thereof, and polymers produced using such catalyst systems.

Catalysts for producing polymers and enhanced properties

This invention relates to a dicyclopentadiene (DCPD)-based resin functionalized with groups capable of reacting with silica or carbon black for use in high performance tires and a preferred method of preparing the functionalized resin comprising ruthenium-catalyzed ring-opening cross metathesis. The functionalized resin may comprise the reaction product obtained by contacting a polymer comprising units derived from (DCPD) and a vinyl monomer or vinylene monomer in the presence of a metathesis catalyst, wherein the vinyl monomer or vinylene monomer comprises at least one of the following functional groups: a silyl group, a siloxy group, or an alkoxysilyl group. This invention further relates to a tire tread composition comprising the functionalized resin and which exhibits enhanced durability, traction, handling, and extractability properties.

Functionalized resins for high performance tires

This invention relates to methods to prepare and compositions pertaining to branched ethylene-propylene copolymers that include at least 50% ethylene content by weight as determined by FTIR; a g'of less than 0.95; a Mof 125,000 to 300,000; a methylene sequence length of 6 or greater as determined byC NMR, wherein the percentage of sequences of the length of 6 or greater is more than 32%; and can have greater than 50% vinyl chain end functionality.

Ethylene-propylene copolymeric compositions with long methylene sequence lengths

This invention relates to a process for the preparation of a silane-functionalized resin composition comprising the steps of mixing a polymer backbone, a silane, and a free radical initiator; and producing a silane-functionalized resin composition. The polymer backbone is selected from at least one of dicyclopentadiene (DCPD)-based polymers, cyclopentadiene (CPD)-based polymers, DCPD-styrene copolymers, Chomopolymers and copolymer resins, C-styrene copolymer resins, terpene homopolymer or copolymer resins, pinene homopolymer or copolymer resins, Chomopolymers and copolymer resins, C/Ccopolymer resins, alpha-methylstyrene homopolymer or copolymer resins, and combinations thereof.

Free radical grafting of functionalized resins for tires

This invention relates to a process for the preparation of a silica-treated functionalized resin composition comprising the steps of reacting a polymer backbone with a hydrosilylation agent to produce a silane-functionalized resin composition, wherein the polymer backbone is selected from at least one of dicyclopentadiene (DCPD)-based polymers, cyclopentadiene (CPD)-based polymers, DCPD-styrene copolymers, Chomopolymers and copolymer resins, C-styrene copolymer resins, terpene homopolymer or copolymer resins, pinene homopolymer or copolymer resins, Chomopolymers and copolymer resins, C/Ccopolymer resins, alpha-methylstyrene homopolymer or copolymer resins, and combinations thereof; and mixing the silane-functionalized resin composition with a silica to produce a silica-treated functionalized resin composition.

Silica treating of functionalized resins in tires

Catalysts for producing polymers with enhanced properties

This invention relates to a functionalized resin composition having the formula P-X-S-W where S is a spacer selected from at least one of C-Cstraight chain and branched alkyl, C-Caromatics, butadiene, isoprene, and combinations thereof, P is a polymer backbone selected from at least one of dicyclopentadiene (DCPD)-based polymers, cyclopentadiene (CPD)-based polymers, DCPD-styrene copolymers, Chomopolymers and copolymer resins, C-styrene copolymer resins, terpene homopolymer or copolymer resins, pinene homopolymer or copolymer resins, Chomopolymers and copolymer resins, C/Ccopolymer resins, alpha-methylstyrene homopolymer or copolymer resins, and combinations thereof, X is one or more reactive groups, and W is a silane.

Dual reactive functional groups for resins in tires

This invention relates to a functionalized resin composition having the formula P&#x2014;S&#x2014;X where S is a spacer selected from at least one of C-Cstraight chain and branched alkyl, C-Caromatics, butadiene, isoprene, and combinations thereof, P is a polymer backbone selected from at least one of dicyclopentadiene (DCPD)-based polymers, cyclopentadiene (CPD)-based polymers, DCPD-styrene copolymers, Chomopolymers and copolymer resins, C-styrene copolymer resins, terpene homopolymer or copolymer resins, pinene homopolymer or copolymer resins, Chomopolymers and copolymer resins, C/Ccopolymer resins, alpha-methylstyrene homopolymer or copolymer resins, and combinations thereof, and X is a silane.

Spacer groups for functionalized resins in tires

An ethylene copolymer, a Group 4 transition metal catalyst compound, and methods for polymerization using such a compound, said compound represented by the formula: (L)(R')T(Cp)(A)MX, where M is a Group 4 metal; z is 0 to 8; p is 1 to 3; X is an anionic leaving group; T is a bridging group; Rto Rare hydrogen, a hydrocarbyl group, a substituted hydrocarbyl group, aryl group, substituted aryl group, or a heteroatom-containing group (where adjacent R groups can form rings); R&#x2032; is hydrogen, a Cto Calkyl group, a Cto Caryl group, or a Cto Calkylaryl group; and L is a heteroatom or heteroatom-containing group bound to T, Cp is a cyclopentadienyl ring substituted with 0 to 4 substituent groups (where adjacent groups can form Cto Crings); A is Cp or (JS&#x2032;), where J is a Group 15 or 16 element; S&#x2032; is a hydrocarbyl, substituted hydrocarbyl, or heteroatom; z* is 2 or 3, and y is 0 or 1, is provided.

Process of producing polyolefins using metallocene polymerization catalysts and copolymers therefrom

This invention relates to relates to a polyolefin composition comprising one or more of the following formulae: wherein the PO is the residual portion of a vinyl terminated macromonomer (VTM) having had a terminal unsaturated carbon of an allylic chain and a vinyl carbon adjacent to the terminal unsaturated carbon.

Oxygenation of vinyl-terminated macromonomers

Growing community of inventors

Houston, TX, United States of America

Ian C Stewart