C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
400/107, 403/32
C08G 18/12 (2006.01) C08G 18/08 (2006.01) C08G 18/32 (2006.01) C08G 18/38 (2006.01) C08G 18/40 (2006.01) C08G 18/65 (2006.01)
Patent
CA 2034745
Mo3348 PU267 STABLE DISPERSIONS OF POLYHYDRAZODICARBONAMIDES USEFUL IN THE PREPARATION OF POLYURETHANE PRODUCTS HAVING IMPROVED LOAD-BEARING CAPACITY ABSTRACT OF THE DISCLOSURE This invention relates to a process for the preparation of stable dispersions of hydroxyl-containing polyhydrazodicarbonamides in a hydroxyl-containing compound. The dispersions are prepared by the reaction of organic isocyanates, isocyanate-reactive compounds having a molecular weight in the range from 400 to 10,000, relatively low molecular weight isocyanate-reactive compounds, and hydrazines or hydrazides. This invention further relates to the dispersions prepared by said process, the use of the dispersions to prepare polyurethane foams having exceptional hardness, and the foams prepared thereby.
Avar Geza
Freitag Hans-Albrecht
Keegan Richard E.
Koshute Mark A.
Lucarelli Michael A.
Avar Geza
Corporation Bayer
Freitag Hans-Albrecht
Keegan Richard E.
Koshute Mark A.
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