Polymer composition useful for stabilizing unsaturated polymers such as styrene-butadiene block copolymers against heat-induced crosslinking during processing, comprises a combination of bisphenol mono- and diesters

摘要

A polymer composition contains: (I) a monoacrylate ester of a diphenylmethane-based bisphenol; and (II) a diacrylate ester of a diphenylmethane-based bisphenol. The amount of (II) being 0.01-5 wt.% of the total weight of (I) and (II). A polymer composition comprises (in addition to a polymer): (I) a bisphenol-monoester of formula (I); and (II) a bisphenol diester of formula (II). The amount of (II) being 0.01-5 wt.% of the total weight of (I) and (II). R1, R6 = H, 1-5C alkyl or phenyl; R2, R3, R7, R8 = 1-9C alkyl; and R4, R5, R9, R10 = H or Me. An Independent claim is also included for a method for stabilizing a polymer, involving incorporation of (I) and (II).