GELS

摘要

Gels of hard-elastomer-nard block copolymers with at least 300 parts of extender liquid per 100 pans of the copolymer contain at least 50 parts (per 100 parts of copolymer) of a stabilising additive which resists migration of PVC plasticisers into the gel when in contact with a plasticised PVC article. Styrene-ethylene-butylen e)- styrene triblock copolymers with organic phos- phate stabilisers are preferred, these stabilisers,tending to raise the gel softening temperature.