Prepolymer mixture for producing closed sound and heating insulation includes silane-terminated polyurethane prepolymer with alkyl siloxane groups

摘要

Prepolymer mixture contains silane-terminated polyurethane prepolymer has good foam stability. Prepolymer mixture comprises a propellant, additives and a prepolymer comprising a silane-terminated polyurethane prepolymer with at least two Si(OR)x(R)3-x groups per mol. R = 1-6C alkyl and x = 1-3. An Independent claim is included for pressure boxes for the production of the above mixture.