Foam, re-soluble in alkali

摘要

A foamed, resoluble foam consists of an acrylate copolymer with mol. wt. of 80000-500000, contg. 5-10% of termonomer, e.g. styrene or more than 6C acrylic acid ester, has thickness of 0.8-2 mm, and contains 1-10 (4-7) wt.% of propellant.