Cyclic anhydride derivatives of hydrazide functionalized hindere

Details Cyclic anhydride derivatives of hydrazide functionalized hindere Cyclic anhydride derivatives of hydrazide functionalized hindere

1987-08-12

1989-04-25

Hoke, Veronica P.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524103, 546187, 546200, 546208, 546242, 546244, 546245, 546247, C08K 534

Patent

active

048248843

ABSTRACT:
Amic acids, cyclic imides and mixtures thereof which contain both diacyl hydrazide functionalities and hindered amine functionalities are prepared by reacting non-halogenated cyclic anhydrides with hindered amine light stabilizers containing reactive hydrazido funtionalities in inert solvents or in inert polymeric compositions in a melt blending step. The compositions protect polymeric compositions against the degradative effects of heat and light.

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