Process for producing polymer bound hindered amine light stabili

Details Process for producing polymer bound hindered amine light stabili Process for producing polymer bound hindered amine light stabili

1987-08-12

1989-09-12

Hoke, Veronica P.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

524 99, 524102, 525375, C08F 830

Patent

active

048661368

ABSTRACT:
N-(polyalkyl-4-piperidinyl)imide containing polymer is prepared by blending together a mixture of a polymer containing anhydride functions and a 4-amino-polyalkylpiperidine or its 1-alkyl or 1-acyl derivatives and heating said materials in the blend, either prior to or during the blending step to the molten stage of the polymer; thereafter, heating said blend above 180.degree. C. for a sufficient time to form the product. All volatile by-products are removed either simultaneously or subsequently with the above 180.degree. C. heating step.

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