Abstract:
THIS INVENTION RELATES TO AN IMPROVED PROCESS FOR THE PREPARATION OF POLYETHER THIOETHERS WHICH ARE SUITABLE FOR USE AS PLASTICIZERS. IT HAS BEEN FOUND THAT THE CONDENSATION OF THIOGLYCOL WHICH IS CATALYZED WITH PHOSPHOROUS ACID CAN BE SUBSTANTIALLY ACCELERATED BY ALSO ADDING A SMALL QUANTITY OF A SALT OF METAL FROM THE GROUP II, II-A, VIII-A OF THE PERIODIC SYSTEM AND AN ORGANIC SULPHONIC ACID.
Abstract:
HEAT CROSS-LINKABLE COMPOSITIONS ARE PROVIDED WHICH ARE A MIXTURE OF A CYCLOALIPHATIC POLYAMINE AND A E-CAPROLACTAM BLOCKED POLYISOCYANATE COMPOUND. THE COMPOSITIONS ARE SUITABLE IN THE PRODUCTION OF SHEET STRUCTURES AND MOLDED ARTICLES.
Abstract:
A sealing composition, capable of hardening in the presence of water, is comprised of a polycondensation or polymerization product having a molecular weight of from about 500 to about 10,000 and at least two carbamic acid aryl ester groups and a polyfunctional ketimine or enamine.