Process for crosslinking.

摘要

A process for crosslinking comprises: (a) introducing into a reactor, under crosslinking conditions, a mixt. comprising: (i) one or more polyolefins; (ii) organic peroxide; (iii) an ester, ether or ketone contg. 2 or more unsatd. gps.; and (iv) a cpd. of formula CH2=C(R)-C(O)-O-R1-R2 (I) R = H, methyl or ethyl; R1 = 1-6C alkylene; R2 = 8C or more alkyl or Si(R3); and R3 = H or 1-6C alkoxy, provided that at least one R3 alkoxy; and (b) crosslinking the polyolefin(s). Also claimed are (1) an extrusion process using VLDPE and (ii)-(iv) (detailed below); (2) a compsn. comprising (a) (above); and (3) a compsn. comprising VLDPE and the pref. amts. of (ii)-(iv) (see below).