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US 6,187,858 B1Granted
Stabilized insulation composition
AssigneeNippon Unicar Company Limited
InventorsTakeshi Tachikawa, Koji Ishihara, Ariyoshi Ohki
Life of this patent
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Abstract
A composition comprising: (a) polyethylene; (b) as a first antioxidant, a thiobisphenol; (c) as a second antioxidant, a compound containing 3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate in the molecule; (d) as a third antioxidant, distearyl thiodipropionate; and (e) an organic peroxide, with the proviso that each antioxidant is present in an amount of about 0.01 to the about 0.2 part by weight and the organic peroxide is present in an amount of about 0.5 to about 3 parts by weight, all per 100 parts by weight of polyethylene.
Claims4
A composition comprising:
- (a) polyethylene;
- (b) as a first antioxidant, a thiobisphenol;
- (c) as a second antioxidant, a compound containing 3-(3,5-di-t-butyl-4-hydroxy-phenyl)propionate in the molecule;
- (d) as a third antioxidant, distearyl thiodipropionate;
- and
- (e) an organic peroxide,
- with the proviso that each antioxidant is present in an amount of about 0.01 to the about 0.2 part by weight and the organic peroxide is present in an amount of about 0.5 to about 3 parts by weight, all per 100 parts by weight of polyethylene.
4 more elements
Dependencies are inferred from the claim text.