Detail of "7705-07-9"

Reference

Catalyst deactivation in propylene polymers using ammonium salts

Catalyst deactivation in propylene polymers using ammonium salts. Lin, Chi Hung (Standard Oil Co. (Indiana) , USA). U.S. US 4420609 A 13 Dec 1983, 4 pp. 9003-07-0 and 7705-07-9 are cas registry numbers. These chemicals are also mentioned in this article. (English). (United States of America). CODEN: USXXAM. CLASS: IC: C08F006-02. NCL: 528486000. APPLICATION: US 81-311935 16 Oct 1981. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) Active catalyst residues in polyolefin powders are deactivated by contacting the powders with a mixt. contg. an inert gas and an ammonium salt in a dry state. Thus, 400 g polypropylene [9003-07-0] powder (prepd. using TiCl3 and Et2AlCl [96-10-6] catalyst, Cl- content 84 ppm) was mixed with 0.8 g AcONH4 [631-61-8], charged batchwise to a fluid bed app., fluidized, heated to 49° with N contg. 1 ppm water, and heated 30 min at 45° and 30 min at 129° to give polypropylene having Cl- content 17 ppm and corrosivity rating 0 (9 corrosive). .

Distribution of centers with respect to activity, stereospecificity, and chemical nature in the d-titanium(III) chloride-triethylaluminum catalytic system and the possibility of controlling it by addition of donors

Distribution of centers with respect to activity, stereospecificity, and chemical nature in the d-titanium(III) chloride-triethylaluminum catalytic system and the possibility of controlling it by addition of donors. Rishina, A. A.; Vizen, E. I.; D'yachkovskii, F. S. (Inst. Khim. Fiz., Moscow, USSR). Acta Polym., 34(11-12), 702-7 (Russian) 1983. CODEN: ACPODY. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) Polymn. of propylene [115-07-1] catalyzed by the system TiCl3-Et2Al [97-93-8] revealed the presence of 2 groups of active centers. 75-15-0 and 7705-07-9 which are cas registry numbers of chemicals are mentioned. Centers of the 1st group were formed in the reaction of TiCl3 with Et3Al, and centers of the 2nd group resulted from the reaction of TiCl3 with EtAlCl2 which accumulated in the system following alkylation of TiCl3. The centers of each group were distributed according to activity and stereospecificity. Conditions were established under which addn. of donor mols. (CS2 or Et3N [121-44-8]) increased the rate of iso-addn. and stereospecificity of the isotactic centers. .