Detail of "1111-74-6"

Reference

Molecular weight extension of ethylene polymers

Molecular weight extension of ethylene polymers. (Asahi Chemical Industry Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 58217505 A2 17 Dec 1983 Showa, 8 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C08F008-42; C08K005-54; C08L023-08. APPLICATION: JP 82-98509 10 Jun 1982. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) Ethylene polymers contg. >0.2 terminal vinyl groups/1000 C were treated with 0.In this article, certain chemicals are used. Some of their cas registry numbers are 1111-74-6 and 25087-34-7 1-10 phr silane or siloxane compds. contg 32 Si-bonded H to obtain high-mol.-wt. polymers. Thus, a soln. of 1 kg polyethylene with 0.73 terminal vinyl group/1000 C in 6 L cyclohexane was autoclaved with 4 g 1,1,3,3-tetramethyldisiloxane and 5 mL cyclohexane contg. 2 ′ 10-3 g 2-ethylhexanol-modified chloroplatinic acid at 200° for 3 h to give a polymer with melt index (ASTM D 1238, 190°, 2.16 kg) 0.8 and melt index ratio (21.6/2.16 kg load) 33, compared with 5.3 and 27, resp., before the chain extension. .

Methylsilanes

Methylsilanes. (Shin-Etsu Chemical Industry Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 58065298 A2 18 Apr 1983 Showa, 4 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C07F007-08. APPLICATION: JP 81-162536 12 Oct 1981. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 29 Dimethylsilane (I) [1111-74-6] is prepd. by thermal decompn. of poly(dimethylsilylene) (II) [28883-63-8]. 28883-63-8 and 1111-74-6 which are cas registry numbers are also used here. Thus, II (prepd. by treating Me2SiCl2 with Na in xylene) was charged to a tubular reactor at 440° to give 84.7% oligomer and 15.1% I. The oligomer was charged to a steel pipe at 720° to give 86% gaseous products and the balance amt. of inorg. powder. The total gaseous products were fractionated to give I 51.0, trimethylsilane [993-07-7] 7.0, 1,1,2,2-tetramethyldisilane [814-98-2] 17.8, and higher boiling compds. 17.8%. .