Highly branched diene polymers

고도로 분지된 디엔 중합체

Abstract

본 발명은 공액 디엔, 또는 공액 디엔과 비닐방향족 화합물, 및 커플링을 할 수 있는 기를 4개 이상 갖는 다관능성 유기 화합물을 기재로 하는, 고도로 분지되고 커플링된 중합체에 관한 것이다. 본 발명에 따르는 고도로 분지된 디엔 중합체로부터 모든 종류의 가황물 및 고무 성형품, 특히 개선된 회전저항을 갖는 타이어를 제조할 수 있다.
PURPOSE: Highly branched and coupled diene polymers and a process for their preparation and use are provided. CONSTITUTION: The branched and coupled polymers are characterized in that it is based on conjugated dienes or on conjugated dienes and vinyl aromatic compounds and on polyfunctional, organic compounds having at least 4 groups which are capable of coupling, wherein the polymers have a molecular weight ratio (Mw/Mn) of 1.0 to 3.0, a weight-average molecular weight(Mw) of 400,000 to 2,000,000, a glass transition temperature(Tg) of -50 to -10 deg.C, an amount of 1,2-vinyl groups of 40 to 80%, based on the diene units present in the polymer, and a degree of coupling of at least 45%, at least 60% of the coupled polymers having a degree of branching of greater than two, with the proviso that the amount by weight of polymers with 4- and more than 4-fold branching, based on 100 g of polymer, is always greater than the amount by weight of polymers with 3-fold branching, and wherein the difference in the solution viscosity of the polymers before and after the coupling is in the range from 100 to 400 (measured with a solution of 0.5 g polymer in 100 ml toluene, determined at 25 deg.C with an Ubbelohde viscometer).

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    KR-101457981-B1November 05, 2014가부시키가이샤 브리지스톤분지화 중합체 및 그의 합성 방법 및 용도
    WO-2009018264-A3May 22, 2009Jeffrey Luke Anderson, Basf CorpDispersions à base d'eau de polymères extrêmement ramifiés