METHOD FOR PRODUCING HIGH-ELASTIC, CHEMICAL-RESISTANT POLYURETHANE AND COATINGS

摘要

A process for the preparation of highly elastic, chemicals- resistant polyurethane plastics, in particular surface coatings, involves reacting… a) a polyisocyanate component with… b) a polyol component which is essentially a liquid polybutadiene resin having a molecular weight in the range from 500 to 10,000 and containing terminal hydroxyl groups,… c) water in an amount from 10 to 50% by weight, based on the weight of component b),… d) alkaline earth metal hydroxides or oxides in an amount of from 20 to 500% by weight based on the weight of component b), if desired in addition to further inorganic assistants and additives, and, if desired,… e) organic assistants and additives.