Detail of "558-37-2"

Reference

In situ process for producing an a-olefin polymerization catalyst component

In situ process for producing an a-olefin polymerization catalyst component. Fries, Richard W. (Northern Petrochemical Co., USA). U.S. US 4482638 A 13 Nov 1984, 4 pp. (English). (United States of America). CODEN: USXXAM. CLASS: IC: C08F004-64. NCL: 502108000. APPLICATION: US 83-513766 14 Jul 1983. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) An olefin polymn. catalyst is prepd. in situ without milling or grinding by adding an olefin to a Ti halide and adding an electron donor to the mixt. Thus, 0.3 g cocrystd. TiCl3 and AlCl3 was treated with 2 mL 3,3-dimethylbutene [558-37-2] for 30 min, centrifuged, washed with heptane, treated with 1 mL 1 M Bu benzoate [136-60-7] for 30 min, centrifuged, and used as a catalyst component. Propylene was polymd. with Et2AlCl [96-10-6] as a cocatalyst in a gas-phase process for 1 h at 7 atm and 75-80° with Al-Ti molar ratio 7:1 to give polypropylene [9003-07-0] having 91.7% heptene-insol. component and productivity 33.3 g polypropylene/g catalyst/h/atm. The yield was 109% greater than that obtained when TiCl3-AlCl3 was used alone.

Vinylation and polymerization with trivinylaluminum

Vinylation and polymerization with trivinylaluminum. I. Vinylation of organic halides as a model for termination in cationic polymerization leading to vinyl end groups. Mandal, Broja M.; Kennedy, Joseph P.; Kiesel, Rodney (Inst. Polym. Sci., Univ. Akron, Akron, Ohio, USA). J. Polym. Sci., Polym. Chem. Ed., 16(4), 821-31 (English) 1978. CODEN: JPLCAT. ISSN: 0449-296X. DOCUMENT TYPE: Journal CA Section: 35 (Synthetic High Polymers) Section cross-reference(s): 22, 23, 29 An improved synthesis of (CH2:CH)3Al (I) [1115-97-5] was described, a new vinylation method involving the use of I as the vinylating agent was developed, and the vinylation of org. halides by I was studied at -30, -50, and -70° as a model reaction for initiation followed by immediate termination in cationic olefin polymn., a process leading to vinyl-terminated polymers.In this experiment, several chemicals are used like 1115-97-5 Thus, treatment of Me3CCl [507-20-0] with I gives Me3CCH:CH2 [558-37-2] (70-98%) while 3-chloro-1-butene [563-52-0] and 3-chloro-3-methyl-1-butene [2190-48-9] yield the expected vinylated products and their isomers (~90%).In this experiment, several chemicals are used like 1115-97-5 The reaction between I and 2,6-dichloro-2,6-dimethylheptane (II) [35951-36-1] yielded several isomeric C13H24 and C11H20 hydrocarbons, but the expected C9H16 did not form. The C13 hydrocarbons are formed by divinylation at the termini of II, while the C11 hydrocarbons are formed by vinylation at one and proton elimination at the other terminus of the dichloride. ..