The heterofunctional condensation of organotrichlorosianes with α,ω)-dihydroxydimethylsiloxanes leads to condensation products, i.e., chlorine- and dichlorine-substituted organocyclosiloxanes and linear tetrachlorine-substituted organodimethylsiloxanes.

Chemischer InformationsdienstVolume 11, Issue 40 Organoelement Compounds ChemInform Abstract: SYNTHESIS OF ACRYLOXYBUTYL- AND METHACRYLOXYBUTYLPENTAMETHYLDISILOXANES K. A. ANDRIANOV, K. A. ANDRIANOVSearch for more papers by this authorL. M. VOLKOVA, L. M. VOLKOVASearch for more papers by this authorA. A. ZHDANOV, A. A. ZHDANOVSearch for more papers by this authorE. P. PERSEGOVA, E. P. PERSEGOVASearch for more papers by this author K. A. ANDRIANOV, K. A. ANDRIANOVSearch for more papers by this authorL. M. VOLKOVA, L. M. VOLKOVASearch for more papers by this authorA. A. ZHDANOV, A. A. ZHDANOVSearch for more papers by this authorE. P. PERSEGOVA, E. P. PERSEGOVASearch for more papers by this author First published: October 7, 1980 https://doi.org/10.1002/chin.198040276AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume11, Issue40October 7, 1980 RelatedInformation

AbstractSetzt man 1 Mol der Silane (I) nach Zugabe von Hexachloroplatinsäure während 3 Stdn. bei 80°C mit 2 Mol Vinyl‐polymethyl‐cyclosiloxanen (II) um, so erhält man Bis‐(polymethyl‐siloxan‐silethylen)‐dialkylsilane (III).

A study was made of polyaddition of 1,3-bis-(dimethylsilyl)tetramethylcyclodisilazane to unsaturated organic and organosilicon compounds. It was shown that 1,3-bis-(dimethylsilyl)tetramethylcyclodisilazane is highly reactive, but one of the reaction conditions is the formation of an intermediate catalyst complex. A study was made of thermal oxidizing breakdown of polymers synthesized and it was shown that the addition to the polymer chain of a cyclodisilazane fragment increases resistance to thermal oxidizing breakdown.

The pyrolysis products from two cyclo-linear methylsiloxane polymers have been analysed, and formation of the important products interpreted in terms of a simple decomposition mechanism. This mechanism is very similar to that of the polydimethylsiloxane degradation; thus cyclic oligomers are formed from the linear segments, and polycyclic compounds from the cyclic segments of the cyclolinear methylsiloxane polymers.

Reactions leading to the formation of an Si–C bond — the hydrosilylation of unsaturated organic compounds by organohydrosiloxanes and the hydride addition of organohydrosiloxanes to organosilicon compounds containing multiple carbon–carbon bonds — are examined. Factors influencing the course of the reaction and the properties of the addition products are discussed. The bibliography includes 153 references.

The temperature dependence of the density, dynamic viscosity, kinematic viscosity and saturated vapour pressure has been investigated, and the energy of activation for viscous flow, the heat and energy of evaporation determined, for bis-[organocyclotri(tetra, penta)siloxy]-polydimethylsiloxanes with polydimetylsiloxane chains of different length and with different organocyclosiloxane end groups.