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Digitale Medien

Cross-linking of hexenyl silicone polymers via the olefin metathesis reaction (1994)

Stein, Judith ; Lewis, Larry N. ; Lettko, Kevin X. ; [weitere]

Springer

Journal of inorganic and organometallic polymers and materials 4 (1994), S. 367-376

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Details

ISSN: 1572-8870

Schlagwort(e): Hexenyl silicones ; olefin metathesis ; silicone polymerization reactions

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Abstract The olefin metathesis reaction was explored as a novel method to produce cross-linked silicone polymers. Although this reaction is well-known for non-silicone-containing monomers, there are no examples of this reaction in the presence of siloxanes. We have discovered a catalyst system for the reaction of silicone substrates comprised of a 1:4 molar ratio of WCl6/Sn(CH3)4. No metathesis is seen with the traditional ratio of catalyst and cocatalyst. In a model system, 1-hexenylmethylbis(trimethylsiloxy)silane underwent self-metathesis in greater than 75% yield. The catalyst system also promoted metathesis of a hexenyl containing silicone polymer.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00683701

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