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ELASTOMER FUNCTIONALISED BY CARBOXYLIC GROUPINGS OR GRAFT ESTERS, AND USE THEREOF FOR PRODUCING FUNCTIONALISED ELASTOMER/BITUMEN COMPOSITIONS SUITABLE FOR MAKING SURFACINGS
ELASTOMER FUNCTIONALISED BY CARBOXYLIC GROUPINGS OR GRAFT ESTERS, AND USE THEREOF FOR PRODUCING FUNCTIONALISED ELASTOMER/BITUMEN COMPOSITIONS SUITABLE FOR MAKING SURFACINGS
A functionalised elastomer (EF) consisting of an elastomeric substrate with a weight-average molecular weight (a) of 10000-600000 daltons and a polydispersity index lower than 5, and having grafted thereon 0.1-10 wt.%, based on the weight of the substrate, of sequences (b) wherein R1 is a C1-12 (x+z+1)-valent hydrocarbon radical, X is H or a C1-12 monovalent hydrocarbon radical R, z is 0 or 1 and x is an integer from 1 to 3, where x+z ≤ 3, and the weight-average molecular weight (Mw) of said EF is such that the ratio (c) is less than 20 %. Bitumen/EF compositions useful for making surfacings may be produced by incorporating said EF into a bituminous component.
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机译:一种功能化弹性体(EF),由重均分子量(a)为10000-600000道尔顿且多分散指数低于5的弹性体基材组成,并接枝了0.1-10 wt。%(基于重量计)序列(b)的底物,其中R1是C1-12(x + z + 1)价的烃基,X是H或C1-12一价烃基的R,z是0或1,x是整数所述EF的重均分子量(Mw)为1〜3,其中x +z≤3,并且所述EF的重均分子量(Mw)小于20%。可通过将所述EF掺入沥青组分中来生产可用于制造表面的沥青/ EF组合物。
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