Polysiloxane compositions

Details Polysiloxane compositions Polysiloxane compositions

C - Chemistry, Metallurgy

08

L

C08L 83/04 (2006.01) C08K 3/26 (2006.01) C08L 101/08 (2006.01)

Patent

CA 2196248

The present invention discloses the use of a polymer chain having at least one carboxylic acid anhydride group as a consistency stabiliser in the base part of a two-part silicone sealant. The base part consists essentially of the consistency stabiliser, 100 parts by weight of a polymeric material having not less than two groups bonded to silicon which are hydroxyl or hydrolysable groups, 5 to 150 parts by weight of filler and, optionally, pigments and/or plasticizers.

a présente invention a trait à l'utilisation d'une chaîne de polymère portant au moins un groupe anhydride d'acide carboxylique, qui agit comme stabilisant de consistance, dans la base d'une silicone d'étanchéité à deux éléments. La base est essentiellement constituée d'un stabilisant de consistance, de 100 parties en poids d'un matériau polymérique dont au moins deux groupes liés au cilicium sont des groupes hydroxy ou hydrolysables, de 5 à 150 parties en poids de charge et, facultativement, de pigments ou de plastifiants.

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