Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1987-07-06
1989-02-14
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526339, 526913, 5253319, 5253321, 174110SR, 174110PM, C08F 234, C08F23620, C08F23622, H01B 344
Patent
active
048047295
ABSTRACT:
The present invention provides an electrical insulating material which comprises an ethylene copolymer prepared by subjecting, to a high-pressure radical polymerization, ethylene or a mixture of ethylene and at most 3 mol % of another monomer in the presence of one- to three-ring aromatic compound having at least two carbon-carbon double bonds, which are different from each other in reactivity in radical polymerization, in one molecule at a polymerization pressure of 500 to 4,000 kg/cm.sup.2 at a polymerization temperature of 50.degree. to 400.degree. C., with the ethylene copolymer containing 0.005 to 1 mol % of a unit derived from the aromatic compound.
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Plastics and Processes; S. Schwartz; Van Nostrand Reinhold Company, Inc. 1982.
The Effect of Morphology on the Impulse Voltage Breakdown in XLPE Cable Insulation IEEE Transaction on Electrical Insulation, vol. EI-17, No. 5, Oct. 1983, by T. Fukuda, S. Irie, Y. Asada, the Furukawa Electric Co., Ltd.
Recent Developments in Medium Voltage and High Voltage Power Cable Insulation Compounds, Dr. Alfred Campus, BP Chemicals (SUISSE) S.A.
Inoue Takashi
Kawakami Shigenobu
Kojima Shinji
Orikasa Yuichi
Sato Atsushi
Nippon Petrochemicals Co. Ltd.
Schofer Joseph L.
Teskin F. M.
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