HYDROCOLLOID PRESSURE SENSITIVE ADHESIVES

摘要

A pressure-sensitive adhesive material made of a weakly elastic mixture comprising a continuous phase formed essentially from a physically cross-linked solid rubber, which comprises a blend of A-B-A block copolymer, such as a styrene-isoprene-styrene block copolymer and a diblock copolymer such as styrene-butadiene, styrene-isoprene or a hydrogenated styrene-diene copolymer such as styrene/etyhlene butylene, a compatible tackifying resin and a low-molecular weight polyisobutylene, optionally modified by butyl rubber, and a discontinuous phase comprising one or more hydrocolloids that are soluble and/or swellable in water.