C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
400/111, 252/114
C07C 263/00 (2006.01) C08G 18/24 (2006.01) C08G 18/70 (2006.01) C08G 18/72 (2006.01)
Patent
CA 1284986
POLYISOCYANATE PREPARATIONS CONTAINING LATENT TIN CATALYSTS AND A PROCESS FOR THEIR PREPARATION ABSTRACT OF THE DISCLOSURE Polyisocyanate preparations containing latent tin catalysts are made from an organic polyisocyanate and a reaction product of a sulfonyl isocyanate and an organic tin catalyst in which at least one tin-oxygen bond is present. The organic tin catalyst preferably contains a tin-alkoxy, tin-siloxy, distannoxane and/or tin-carboxylate group. The reaction product of a sulfonyl isocyanate with a tin-carboxylate must generate carbon dioxide during its formation. The sulfonyl isocyanate and organic tin compound are used in quantities such that at least one isocyanato-sulfonyl group is present for each tin-oxygen bond. These polyisocyanate preparations are storage stable and may be used to produce adhesives, coatings and foams.
525788
Busch Ralf
Hombach Rudolf
Metzinger Hans-Gerd
Muller Hanns Peter
Riberi Bernd
Aktiengesellschaft Bayer
Swabey Ogilvy Renault
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