Detail of "7632-51-1"

Reference

Effect of the nature of the catalytic system on the composition inhomogeneity of copolymers of ethylene and propylene

Effect of the nature of the catalytic system on the composition inhomogeneity of copolymers of ethylene and propylene. Livshits, I. A.; Erenburg, E. G.; Osipchuk, E. O.; Pavlova, L. V.; Gershtein, E. R.; Evdokimova, S. P.; Poddubnyi, I. Ya. (Vses. Nauchno-Issled. Inst. Sint. Kauch., Leningrad, USSR). Vysokomol. Soedin., Ser. A, 19(11), 2494-9 (Russian) 1977. CODEN: VYSAAF. DOCUMENT TYPE: Journal CA Section: 35 (Synthetic High Polymers) The copolymn. of ethylene (I) with propylene (II) in the presence of Et2AlCl [96-10-6], Et3Al2Cl3 [12075-68-2] or iso-Bu2AlCl [1779-25-5] with VOCl3 [7727-18-6] or VCl4 [7632-51-1] gives copolymers [9010-79-1] of narrow compn. distribution. Replacing the alkylaluminum chlorides with (iso-Bu)3Al [100-99-2], under the same polymn. conditions, led to the formation of copolymers of nonuniform compn. The prepn. method (in the presence or absence of monomers) of Et3Al2Cl3-VOCl3 catalyst system had no influence on the compn. distribution, but in the case of Et2AlCl-VOCl3 and (iso-Bu)2AlCl-VOCl3 sysstems, those prepd. in the absence of monomers gave copolymers with high compn. inhomogeneity.

Functionally substituted terpolymers and tetrapolymers of alpha-olefins

Functionally substituted terpolymers and tetrapolymers of alpha-olefins. Collette, John Wilfred; Ro, Rolland Shin-Yuan; Sonnenberg, Fred Max (du Pont de Nemours, E. I., and Co., USA). U.S. US 4017669 12 Apr 1977, 7 pp. Division of U.S. 3,748,316. (English). (United States of America). CODEN: USXXAM. CLASS: IC: C08F004-20. NCL: 526169000. APPLICATION: US 69-829758 2 Jun 1969. DOCUMENT TYPE: Patent CA Section: 35 (Synthetic High Polymers) Ethylene ter- and tetrapolymers with functional monomers are prepd. in the presence of the coordination catalyst VCl4 [7632-51-1]-Et2AlCl [96-10-6] using hexachloropropylene (I) [1888-71-7] catalyst reactivator. Thus, ethylene-1,4-hexadiene-5-norbornene-2-acetic acid (II)-propylene tetrapolymer [30755-10-3] was prepd. in 40.9 g yield by introducing ethylene and propylene into a flask contg. perchloroethylene (III) at -5.degree. at rate 1.5 L/min, followed by addns. of 0.10 mol Et2AlCl, 0.05 mol II, and 0.10 mol hexadiene in III soln. After addn. of 0.0003 mol VCl4 and 0.003 mol I in III at -5.degree., the polymn. was conducted for 30 min and terminated by the addn. of 180-PrOH. In demonstration of the use of such ter- and tetrapolymers as adhesives, ethylene-1,4-hexadiene-2-hydroxymethyl-5-norbornene-propylene copolymer [62859-03-4] was compounded with Super Clay, heated at 100.degree. for 3 min, and cooled. The specimen had tensile strength at break (25.degree.) 210 psi, compared to 50 psi for a control prepd. using VOCl3-(iso-Bu)2AlCl catalyst.