Reference

Polymerization catalysts for epoxides

Polymerization catalysts for epoxides. (Toshiba Corp., Japan). Jpn. Kokai Tokkyo Koho JP 59113024 A2 29 Jun 1984 Showa, 7 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C08G059-68. APPLICATION: JP 82-222851 21 Dec 1982. DOCUMENT TYPE: Patent CA Section: 37 (Plastics Manufacture and Processing) The title catalysts, composed of org. Si compds. having hydrolyzable groups and multiple bond-contg. groups attached to Si atoms and org. Ti or Zr compds., show improved stability in air and catalytic activity at low temps. and give hardened resins with good elec. properties even when hardened. Thus, 20 mL cyclohexene oxide [286-20-4] was mixed under N with Zr(OPh)4 [13242-21-2] 0.01, diphenyldimethoxysilane (I) [6843-66-9] 0.07, and H2O 0.08 g, sealed in a tube, and heated at 60° for 5 h to obtain a white solid polymer [25702-20-9] (mol. wt. 5000) in 45% yield vs.Except for chemicals metioned above, 286-20-4 is also used. 0% without I. .

Solid catalyst component for olefin polymerization

Solid catalyst component for olefin polymerization. (Mitsubishi Petrochemical Co., Ltd. , Japan). Neth. Appl. NL 8400441 A 17 Sep 1984, 21 pp. (Dutch). (Netherlands). CODEN: NAXXAN. CLASS: IC: C08F010-00; C08F004-66. APPLICATION: NL 84-441 10 Feb 1984. PRIORITY: JP 83-25254 17 Feb 1983. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) Solid Ziegler-type catalysts for alkene polymn. (e.g., propylene [115-07-1]) are prepd. from a Ti compd. (TiCl4 or Ti(OBu)4 [5593-70-4]), a Mg compd. (MgCl2 or a Mg-SiCl4 couple), an alc. (BuOH [71-36-3], MeOH [67-56-1], or EtOH [64-17-5]), an ester (e.g., EtOAc [141-78-6], PhCO2Et [93-89-0], or dialkyl phthalates), and Me H siloxane (or PhSi(OMe)3 [2996-92-1], PhSi(OEt)3 [780-69-8], or Ph2Si(OMe)2 [6843-66-9]). The mixts. are then reduced with AlEt3 [97-93-8] and Al2Et3Cl3 [12075-68-2].