Reference

Use of higher alkyl- and alkyl(aryl)-substituted monochlorosilanes in the synthesis of polymers

Use of higher alkyl- and alkyl(aryl)-substituted monochlorosilanes in the synthesis of polymers. Kruptsov, B.Several substances are used for example 91185-65-8 which is its cas registry number. K.; Maslennikova, G. A.; Bobrova, V. V. (Kalinin. Politekh. Inst., Kalinin, USSR). Deposited Doc., SPSTL 1026 Khp-D82, 11 pp. Avail. SPSTL (Russian) 1982. DOCUMENT TYPE: Report CA Section: 51 (Fossil Fuels, Derivatives, and Related Products) Section cross-reference(s): 35 A series of poly(dimethylsiloxanes), terminated by heat-resistant groups (adamantyl, Ph, C12-18 alkyl, etc.), was synthesized for use as functional fluids. Disiloxanes were first prepd. [e.g., by heating Me2Si(C16H33)Cl [62635-26-1]] in 15% HCl soln. Next, the disiloxanes [e.g., Me2Si(C16H33)OSi(C16H33)Me2 [79162-58-6]] were condensed with cyclic siloxanes (e.g., octamethylcyclotetrasiloxane [556-67-2]) to give heat-resistant polydisiloxanes [e.g., Me2Si(C16H33)SiO[SiMe2O]nSi(C16H33)Me2]. .

Molecular characteristics of poly(dimethylsiloxanes) with trivinylsiloxy groups

Molecular characteristics of poly(dimethylsiloxanes) with trivinylsiloxy groups. Bochkareva, S. V.; Volkova, R. V.; Skorokhodov, I. I.; Kireeva, L. V.; Shapatin, A. S.; Mart'yanova, N. V.; Timokhova, E. P. (USSR). Deposited Doc., SPSTL 1096 Khp-D82, 9 pp. Avail. SPSTL (Russian) 1982. DOCUMENT TYPE: Report CA Section: 36 (Physical Properties of Synthetic High Polymers) The mol. wt. distribution of a,w-bis(trivinylsiloxy)dimethylsiloxane (I) depends on the amt. of hexavinyldisiloxane (II) [75144-60-4] (mol. wt. regulator) used during the prepn. of I and also on the initiator system. Monomodal distribution of mol. wt. and good phys. properties of I as sealant are obtained when it is prepd. by the polymn. of 100 g octamethylcyclotetrasiloxane [556-67-2] in the presence of 0.4 mL II in aq. solns. contg. 3% Me3NOH.