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US 4,066,610 AGranted
Stabilized pigmented polyolefin compositions
AssigneeDart Industries Inc.
InventorsKornel Dezso Kiss, John Leslie Hugh Allan, Marvin Michael Fein
Life of this patent
Estimating the term…
Abstract
Polyolefins pigmented with copper phtalocyanine complexes are rendered stable against heat and oxidation by addition of a metal chelating agent.
Claims17
The method of reducing the detrimental effect of a copper phthalocyanine pigment on the stability of a polyolefin resin pigmented with said copper phthalocyanine, which comprises:
- including in the pigmented resin from about 0.01 to about 10 percent of at least one metal chelating agent based on the weight of the polyolefin resin.
Dependencies are inferred from the claim text.