Process of preparation of synthetic resins by reacting a cross-l

Details Process of preparation of synthetic resins by reacting a cross-l Process of preparation of synthetic resins by reacting a cross-l

1975-02-03

1976-01-20

Welsh, M. J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 775AA, 260 775AM, C08G 1808

Patent

active

039337561

ABSTRACT:
Isocyanate polyaddition products which are cross-linked via allophanate, biuret, or uretdione imine groups are linearized by reacting them in the presence of polar solvents with low molecular weight polyisocyanates at temperatures between 90.degree. and 200.degree.C and then preferably reacting the linearized product with amino alkyl silane derivatives to prepare products which are easily cross-linked by atmospheric moisture to form soft highly elastic films.

REFERENCES:
patent: 3164439 (1965-01-01), Muhlhausen et al.
patent: 3326861 (1967-06-01), Sandridge
patent: 3711445 (1973-01-01), Chu et al.
patent: 3738946 (1973-06-01), Frulla et al.
Gould, Mechanism & Structure In Organic Chemistry, Holt, NY, 1959, pp. 57-60.

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