Permanently stabilized polyurethanes

Details Permanently stabilized polyurethanes Permanently stabilized polyurethanes

1977-09-19

1979-12-11

Cockeram, H. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

8178E, 260 326NR, C08K 534, C08K 520

Patent

active

041782798

ABSTRACT:
The invention is related to modified polyurethanes which have a permanent, wash-fast, acidresistant, dry cleaning-resistant and solvent-resistant stabilization based on 2,2,6,6-tetraalkyl-piperidine light protective agents. These stabilizers are an integral constituent of the polyurethanes, that is to say they take part in the polyurethane synthesis by the reaction of an H-active reactive group (for example NH.sub.2, NH-alkyl, CO--NH--NH.sub.2, NH--CO--NH--NH.sub.2, OH or some other H-active group) of the 2,2,6,6-tetraalkyl-piperidine derivatives with isocyanate groups of polyisocyanates or isocyanate prepolymers.

REFERENCES:
patent: B408123 (1976-04-01), Randell et al.
patent: 2871226 (1959-01-01), McShane
patent: 2917486 (1959-12-01), Nelson et al.
patent: 3684765 (1972-08-01), Matsui et al.

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