Reference

Catalysts for copolymerization of ethylene with vinyl chloride

Catalysts for copolymerization of ethylene with vinyl chloride. Misonoo, Akira; Uchida, Yasuzo; Yamada, Kuniichi; Hiramatsu, Takashi (Sekisui Chemical Co., Ltd., Japan). Japan. JP 52020512 B4 3 Jun 1977 Showa, 9 pp. (Japanese). (Japan). CODEN: JAXXAD. CLASS: IC: C08F214-06. APPLICATION: JP 65-26860 10 May 1965. DOCUMENT TYPE: Patent CA Section: 35 (Synthetic High Polymers) Ethylene (I) and vinyl chloride (II) are copolymd. in the presence of Et3B [97-94-9], Et3Sb [617-85-6], Et3Al [97-93-8], Et2Zn [557-20-0], Et2Cd [592-02-9], BuLi [109-72-8], Et2Be [542-63-2], or Et4Pb [78-00-2] and O or tert-butyl hydroperoxide (III) [75-91-2] at low temps. and <50 atm to give copolymer [25037-78-9] contg. >50 mol % II units. Thus, 25 parts II and 16.8 parts I were charged to an autoclave contg. 200 parts heptane, 1.7 mmol Et3B, and 1.1 mmol III at -30.degree. and stirred 5 h at 0.degree. and 6.0-8.5 kg/cm2 to give 11.5 parts (molar) I-II copolymer having mol. wt. 8 .times. 104.

Dimethyltriethylstiborane and trimethylantimonydipropyne: two mixed antimony pentaalkyls

Dimethyltriethylstiborane and trimethylantimonydipropyne: two mixed antimony pentaalkyls. Tempel, N.; Schwarz, W.; Weidlein, J. 617-85-6 which is the cas registry number is also used here. (Inst. Anorg. Chem., Univ. Stuttgart, Stuttgart, Ger.). J. Organomet. Chem., 154(1), 21-32 (German) 1978. CODEN: JORCAI. ISSN: 0022-328X. DOCUMENT TYPE: Journal CA Section: 29 (Organometallic and Organometalloidal Compounds) Section cross-reference(s): 75 The methylation of Et3SbCl2 with LiMe in ether gives Me2SbEt3 in good yield. There are some commonly used reagents like 617-85-6 in this article. H-acidic compds. interact with Me2SbEt3 to give MeEt3SbX (X = OR, ONR2, O2CMe, O2PMe2, Cl, O2PF2, R = Me, Et, CD3). Me3Sb(CHCMe)2 was prepd. from Me3SbCl2 and LiCHCMe and its crystal structure detd. ..