Polyisocyanate preparations containing latent tin catalysts and

Details Polyisocyanate preparations containing latent tin catalysts and Polyisocyanate preparations containing latent tin catalysts and

1990-07-24

1991-09-03

Foelak, Morton

Compositions

Compositions containing a single chemical reactant or plural...

Organic reactant

25218221, 502167, 502158, 528 52, 528 58, B01J 3100, C09K 300, C08G 1808

Patent

active

050452266

ABSTRACT:
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 preparation are storage stable and may be used to produce adhesives, coatings and foams.

REFERENCES:
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patent: 4194035 (1980-03-01), Dieterich
patent: 4607062 (1986-08-01), Megna
patent: 4644016 (1987-02-01), Rasshofer et al.
patent: 4824595 (1989-04-01), Richter et al.
A. Karkas and G. A. Mills, "Advanced Catalysis 13", pp. 393, 1962.
J. H. Saunders, K. C. Frisch, "Polyurethanes", Part 1, Wiley Interscience, N.Y. N.Y. Chapter VI, 1962.
K. C. Frisch and L. P. Rumao, J. Macromol, Sci-Revs, Macromol Chem., C5, pp. 103-150 (1970).

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