Propylene polymer compositions having improved color and stabili

Details Propylene polymer compositions having improved color and stabili Propylene polymer compositions having improved color and stabili

1995-05-25

1996-11-12

Morgan, Kriellion S.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524291, 524317, 524381, 524386, 524389, 524400, C08K 515, C08K 509, C08K 510, C08K 512

Patent

active

055740820

ABSTRACT:
Useful stabilizer combinations and propylene polymer compositions stabilized therewith having improved resistance to discoloration upon processing are provided. The stabilizer combinations of the invention are comprised of a mixture of calcium salts of stearic acid and lactic acid and a tocopherol-containing mixture consisting essentially of .alpha.-tocopherol, glycerin, polyethylene glycol having an average molecular weight of about 300 and glycerol monocaprylate. Propylene homopolymers and random, block and impact copolymers of propylene are stabilized in accordance with the invention.

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