(A3) ;PROCESS FOR THE MANUFACTURE OF A FUNCTIONALIZED POLY-ALPHA-OLEFINE RUBBER AND ITS USE IN THE MANUFACTURE OF THERMOPLASTIC IMPACT-RESISTING PRODUCTS

摘要

A new functionalised poly-alpha-olefin rubber is prepd. by reacting the rubber with (a) maleic anhydride (MSA) and (b) a di-(1-10C alkyl) maleate and/or fumarate, in ratio by wt. of MSA: ester of 1:5-0.5, in absence of hydrocarbon solvents and at above 250 and up to 330 deg.C, to form an adduct contg. 0.5-7.5 wt% of added MSA and diester. The rubber has a Mooney viscosity (ML1+4, 100 deg.C, DIN 53,523) of 30-130 and is obtd. by copolymerisation of 50-85 wt% of ethylene and 15-50 wt% of propylene and/or butene-1, w.r.t. mono-enes, and opt. a multi-ene with isolated C=C bonds, of which only 1 is copolymerisable, the amt. of multi-enes being such that the rubber has fewer than 15 C=C bonds/1000 C atoms. If the rubber has fewer than 2 C=C bonds/1000 C atoms, reaction is in presence of a radical former with decomposition temp. above 200 deg.C. Claimed uses is for prodn. of impact resistant, thermoplastic comspsn. by reactinq (1) 60-95 wt% of a satd. thermoplastic polyester and/or polyamide with 40-5% of the adduct, opt. in presence of fillers and auxiliaries, including organic diisocyanates.