C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
400/107, 400/112
C08J 9/08 (2006.01) C08G 18/10 (2006.01)
Patent
CA 1199147
NON-CRYSTALLINE POLYAMINE/CARBONIC ACID SALT COMPOSITIONS, A PROCESS FOR THEIR PREPARATION AND THEIR USE FOR THE PRODUCTION OF POLYURETHANE UREAS, ESPECIALLY FOAMED COATINGS ABSTRACT OF THE DISCLOSURE This invention relates to new liquid or fluid polyamine/carbonic acid salt compositions free from crystalline content and their preparation from mixtures containing at least one aliphatic or cycloaliphatic polyamine, an aliphatic or cycloaliphatic hydroxyamine having at least one hydroxyl group and at least one amino group, and water and optionally diluents and/or conventional auxiliary agents and additives, by the addition of carbon dioxide. The proportion of poly- amine to hydroxyamine is in the range of from about 95:5 to 10:90 % by weight, the quantity of water added is from about 0.01 to 5 mol of H2O per amine equiva- lent (but at least 1 mol of water per mol of CO2) and the quantity of CO2 added is from about 0.01 to 0.99 mol of CO2 per amine equivalent. The invention further relates to the use of these liquid polyamine/ carbonic acid salt compositions for the production of foamed polyurethane ureas, especially for coating substrates or for the production of sheet products, using prepolymers preferably containing blocked isocya- nate groups and the liquid polyamine/carbonic acid salt compositions as chain lengthening agents and/or cross- linking agents and at the same time as physiologically harmless blowing agents.
413642
Rasshofer Werner
Schmitz Anton
Thoma Wilhelm
Aktiengesellschaft Bayer
Marcoux & Sher Swabey Mitchell Houle
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