Small diameter electric wire insulated with highly expanded cell

Details Small diameter electric wire insulated with highly expanded cell Small diameter electric wire insulated with highly expanded cell

1993-10-14

1994-09-13

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 54, 521 79, 521 98, 521134, C08J 906

Patent

active

053469267

ABSTRACT:
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.

REFERENCES:
Japanese Patent Abstract JP 58174423 of Showa Elec Wire KK.
Japanese Patent Abstract JP 54-044787 A of Mitsubishi Electric Corp.
Japanese Patent Abstract JP 04076028 A of Nippon Unicar KK.
Encyclopedia of Polymer Science and Engineering, Second Edition, H. Mark et al., John Wiley & Sons (1986), vol. 6, pp. 435-444.

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