Single component polyurethane varnish of long shelf life

Details Single component polyurethane varnish of long shelf life Single component polyurethane varnish of long shelf life

1974-03-27

1976-11-02

Michl, Paul R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 75NT, 260 775AT, C08G 1846

Patent

active

039896625

ABSTRACT:
Single-component polyurethane varnishes having long shelf life containing conventional solvents and the reaction product of 3-isocyanatomethyl-3,5,5-trimethylcyclohexylisocyanate (IPDI) and branched polyesters containing terminal hydroxyl groups. The polyesters contain intermolecular tin and are based on mixtures of aliphatic and aromatic dicarboxylic acids, 15 to 85 mole percent of the acids being aliphatic, the balance aromatic. The polyester and IPDI are reacted without catalysts at temperatures of 10.degree. to 35.degree. C and in such quantities that there are two isocyanate group for each --OH group.

REFERENCES:
patent: 3055867 (1962-09-01), Le Bras
patent: 3057824 (1962-10-01), Le Bras
patent: 3157618 (1964-11-01), Le Bras
patent: 3194791 (1965-07-01), Wilson
patent: 3208978 (1965-09-01), Weissenberger
patent: 3352830 (1967-11-01), Schmitt
patent: 3425994 (1969-02-01), Fitz
patent: 3549569 (1970-12-01), Farah

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