Reference

Neutral organophosphorus extractants as complexing agents of tin and titanium tetrachlorides

Neutral organophosphorus extractants as complexing agents of tin and titanium tetrachlorides. Aleinikov, V. I.; Gorbanev, A. I. (Inst. Metall. im. Baikova, Moscow, USSR). Dokl. Akad. Nauk SSSR, 236(6), 1394-7 [Phys. Chem.] (Russian) 1977. CODEN: DANKAS. DOCUMENT TYPE: Journal CA Section: 54 (Extractive Metallurgy) The extn. of SnCl4 and TiCl4 was studied with the neutral organophosphoric complexing agents (BuO)3PO (I) [126-73-8], BuP(O)(OBu)2 (II) [78-46-6], Bu2P(O)OBu (III) [2950-47-2], and Bu3PO (IV) [814-29-9] in C6H14 solvent. The formation of mol. complexes MCl4.E and MCl4.2E was established, where M is Sn or Ti and E is the complexing agent. The extn. capacity increases in the order I < II < III < IV.

Olefin polymerization

Olefin polymerization. (Mitsubishi Petrochemical Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 58117205 A2 12 Jul 1983 Showa, 11 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C08F010-00; C08F004-02; C08F004-64. APPLICATION: JP 81-211577 29 Dec 1981. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) Olefin polymers having high bulk d., uniform particle size and high stereoregularity were prepd. in high catalyst efficiency in the presence of an organoaluminum compd. and a solid catalyst component from Ti(IV) halide, a phosphine oxide, and a Mg compd. Thus, a slurry of 5 g MgCl2 in 50 mL toluene was stirred with 22.9 g Bu3PO [814-29-9] at 40° for 15 min to give a homogeneous soln. which was then stirred with 2. 563-43-9 and 93-89-0 are also in the experiment.4 mL EtOBz [93-89-0] at 80° for 1 h, added over 20 min to a soln. from 100 mL TiCl4 and 100 mL toluene at -20°, heated over 3 h to 90° and then at 90° for 4 h, freed from the liq. phase, and washed 3 times with toluene and then 3 times with heptane to give a solid catalyst component. Polypropylene [9003-07-0] prepd. in the presence of this solid catalyst, Et3Al [97-93-8], and p-MeC6H4CO2Me [99-75-2] in heptane at 70° had boiling-heptane-insol.-material content 97.8%, bulk d. 0.40, catalyst efficiency 477 kg polymer/g Ti. .