Modified polyurethanes with increased light stability

Details Modified polyurethanes with increased light stability Modified polyurethanes with increased light stability

1977-05-04

1978-07-25

Welsh, M. J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 65, 528 66, C08G 1838

Patent

active

041028708

ABSTRACT:
The incorporation of sterically hindered piperidine derivatives into polyurethanes protects this polymer material against light degradation. Usable for the incorporation are piperidine derivatives which are at least difunctional towards isocyanates and contain the structure ##STR1## wherein R is hydrogen or alkyl having 1 to 5 carbon atoms.

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