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AssigneeNippon Unicar Company Limited
InventorsToshio Sakamoto, Kenichiro Kumai, Shigeru Gotoh
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A process for producing an expandable resin composition for a small diameter electric wire insulated with highly expanded cellular polyethylene which comprises (1) heat-kneading at a temperature higher than 135.degree. C. a mixture comprising: (i) a low density polyethylene having a density ranging from about 0.890 to 0.925 g/ml; (ii) a high density polyethylene having a melting point higher than 130.degree. C.; and (iii) a polyolefin wax having an average molecular weight ranging from about 1500 to 8000 and a melting point ranging from about 100.degree. C. to 160.degree. C.; and (2) heat kneading at a temperature ranging from 120.degree. C. to 130.degree. C. and at a preliminary expansion ratio lower than 5% the mixture of step (1) with a low temperature decomposable chemical blowing agent.
A process for producing an expandable resin composition for a small diameter electric wire insulated with a highly-expanded cellular polyethylene, said process comprising:
A composition comprising:
Dependencies are inferred from the claim text.