A styrenic block copolymer is disclosed, having a formula, A-B-A, A-B-B-A, (A-B-A)nX, (A-B)nX or mixtures thereof, wherein n is from 2 to 30, and X is residue of a coupling agent. Each A block is independently a polystyrene having 10-63 wt. % 1,1-diphenylethylene, a GPC peak molecular weight from about 5-40 kg/mol, and forms 10-40 wt. % of the copolymer. Each B block is independently a poly(1,3-diene-co-styrene) comprising: (i) >90 wt. % of polymerized isoprene units relative to the weight of the polymerized 1,3-diene, where S is <40, and (S+V) is 18-75; (ii) >90 wt. % of polymerized butadiene units relative to the weight of the polymerized 1,3-diene, where S is <40, and (1.2*S+V) is 60-120; or combinations thereof “S” represents the polystyrene content, and “V” represents the 1,3-diene content having pendant 1,2- and/or 3,4-vinyl groups in the B block.


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    Title :

    Novel Block Copolymers and Uses Thereof


    Contributors:

    Publication date :

    2020-06-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    C09J ADHESIVES , Klebstoffe / B60C VEHICLE TYRES , Fahrzeugreifen / C08F MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen



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