Reference

Crosslinked polyethylene-insulated wires and cables

Crosslinked polyethylene-insulated wires and cables. (Hitachi Cable, Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 59207504 A2 24 Nov 1984 Showa, 3 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: H01B003-44. APPLICATION: JP 83-83158 12 May 1983. DOCUMENT TYPE: Patent CA Section: 42 (Coatings, Inks, and Related Products) The title insulations contain 2,2'-oxamidodiethyl bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] (I) [70331-94-1] as a discoloration preventive for the conductor. Thus, a mixt. of 100 parts polyethylene [9002-88-4] and 0.3 part I was fed into an extruder, injected with a mixt. of 0.2 part 4,4'-thiobis(6-tert-butyl-3-methylphenol) and 2.0 parts tert-Bu cumyl peroxide, extruded 3 mm thick on a twisted Cu cable of cross section area 200 mm2, and cured with 20 kg/cm2 steam for 10 min. The insulated cable was wound on a drum and subjected to a thermal shock test (90 cycles) between 20° (4 h) and 90° (4 h), showing no discoloration of the conductor.

Semiconductive resin compositions

Semiconductive resin compositions. (Hitachi Cable, Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 59098149 A2 6 Jun 1984 Showa, 3 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C08L023-04; C08K003-04; C08K005-20. APPLICATION: JP 82-208173 26 Nov 1982. DOCUMENT TYPE: Patent CA Section: 42 (Coatings, Inks, and Related Products) Section cross-reference(s): 76 The ethylene polymer-based title compns. preventing discoloration or corrosion of Cu conductors (in elec. cables) by moisture contain 0.1-5 phr 2,2'-oxamidodiethyl bis[3-(3,5-di-tert-butyl-4-hyroxyphenyl)propionate] (I) [70331-94-1]. Thus, 1.0 part I and 1.0 part 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexyne-3 were mixed with a semiconductive compd. consisting of 100 parts ethylene-vinyl acetate copolymer [24937-78-8] (vinyl acetate 19%; MI 15) and 70 parts acetylene black to give a title compn.