Hydrosilylation reactions of tetramethyldisilazanes and their derivatives
摘要:
Hydrosilylation between 1,1,3,3-tetramethyldisilazane (A) and 1,3-divinyl-1,1,3,3-tetramethyldisilazane (B) occurs rapidly at 90 degreesC in the presence of Karstedt's catalyst to give a product mixture consisting mainly of large macrocycles. Deprotonation-substitution reactions of these macrocycles were largely unsuccessful. Trimethylsilylated and methylated derivatives of A and B were prepared and used in hydrosilylation reactions. High-yield formation of large macrocycles was observed when the trimethylsilylated or methylated derivative of B was reacted with unmodified A. The methylated product was successfully deprotonated and functionalized with trimethylsilyl groups. (C) 2002 Elsevier Science B.V. All rights reserved.
[EN] MULTIVINYLAMINOSILANES AS BRANCHING AGENTS FOR FUNCTIONALIZED ELASTOMERIC POLYMERS<br/>[FR] MULTIVINYLAMINOSILANES UTILISÉS COMME AGENTS DE RAMIFICATION POUR DES POLYMÈRES ÉLASTOMÈRES FONCTIONNALISÉS
申请人:TRINSEO EUROPE GMBH
公开号:WO2016131590A1
公开(公告)日:2016-08-25
The present invention relates to novel polymerizable multivinylaminosilanes which are useful as branching agents for synthetic and natural rubber. The compounds of the invention can be used as such in the polymerization of conjugated diene monomers, optionally together with aromatic vinyl monomers, thus producing polymers, specifically elastomeric polymers, which can favorably be used in rubber articles such as tires.