Detail of "12075-68-2"

Reference

Conjugated diene rubbers

Conjugated diene rubbers. (Asahi Chemical Industry Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 60108407 A2 13 Jun 1985 Showa, 9 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: ICM: C08F036-06. ICS: C08F004-52; C08F004-54; C08F004-58. APPLICATION: JP 83-214127 16 Nov 1983. DOCUMENT TYPE: Patent CA Section: 39 (Synthetic Elastomers and Natural Rubber) Section cross-reference(s): 67 Conjugated diene monomer is polymd. using lanthanide rosin acid compds., AlRR1R2 (R, R1 and R2 = H, hydrocarbyl), and halogen-contg. Lewis acids as catalysts. The resulting rubber has narrow mol. wt. distribution and excellent elasticity. Thus, 400 g hexane contg. 60 g 1,3-butadiene was treated with 0.12 mmol neodymium rosinate and 3.6 mmol Al(iso-Bu)3 [100-99-2] in an N atm., then polymd. at 65° for 1 h with 0.28 mmol ethyl aluminum sesquichloride [12075-68-2]; the reaction was stopped by a methanolic soln. of 2,6-bis(tert-butyl)-4-methylphenol, a large amt. of MeOH was added, and the ppt. dried in vacuo to give the desired rubber.

Polyolefin polymerization and catalyst

Polyolefin polymerization and catalyst. Pierce, Dale Eugene; Nowlin, Oscar Dee; Vaughan, Jerry Lewis (Phillips Petroleum Co. , USA). Eur. Pat. Appl. EP 136660 A2 10 Apr 1985, 19 pp. DESIGNATED STATES: R: AT, BE, DE, FR, GB, IT. (English). (European Patent Organization). CODEN: EPXXDW. CLASS: ICM: C08F010-00. ICS: C08F004-64; C08F036-04. APPLICATION: EP 84-111537 27 Sep 1984. PRIORITY: US 83-536921 28 Sep 1983. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) Mg dihalide is used with a benzoate ester and an alkoxytitanium compd. to form a first catalyst component which is treated with an organoaluminum halide to form a solid, and the solid is treated with a halogenating agent comprising a Ti halide to prep. a catalyst for the polymn. of olefins, the first catalyst component being prepd. with a mixt. of anhyd. Mg dihalide and hydrous Mg halide which contains 0.5-2 mol water/mol Mg dihalide. The catalyst exhibits high activity in the polymn. of propene to mainly propene-insol. polymer. Thus, 79.0 g MgCl2.0.08H2O and 35.0 g MgCl2.6H2O were mixed to give MgCl2.1.1H2O which (22.6 g) was added to 150 mL xylene. This compn. was treated with 25 g 4-phenylphenol [92-69-3] and 0.105 mol (BuO)4Ti [5593-70-4], heated 15 min at 100°, treated with 7.5 mL ethyl benzoate [93-89-0], heated 45 min at 100°, cooled, and treated with 125 mL (0.39 mol) ethylaluminum sesquichloride [12075-68-2] soln. The ppt. was sepd., washed, and dried to give 32.2 g solid which (20.0 g) was treated with part of a mixt. of TiCl4 360, HSiCl3 270, and SiCl4 90 mL to give a stirrable mixt. and then heated 1 h at 100°. The ppt. was sepd., washed, and dried to give 18.2 g purple solid which (3.0 mg) was used with Et3Al [97-93-8] 2.0, ethyl anisate [94-30-4] 1.1, and Et2AlCl [96-10-6] 2.0 mmol for the polymn. of liq. propene at 70° in the presence of H. The yield of polypropylene [9003-07-0] was 17,700 g/g solid catalyst/h of which 1.4% was sol. in propene and 2.7% was sol. in xylene.