C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
C07F 7/08 (2006.01) C07H 23/00 (2006.01) C08G 77/10 (2006.01) C08G 77/20 (2006.01) C08G 77/38 (2006.01) C08G 77/46 (2006.01)
Patent
CA 2238556
This invention discloses hydrophilic additives in polysiloxane gels, elastomers and coatings, and novel processes for producing them. The process comprises: (a) redistributing into polysiloxane - polyether copolymers an unsaturated silane or siloxane, (b) adding to the mixture of reagents a catalytically effective amount of a basic catalyst; and (c) heating the reaction mixture to effect reaction. Novel siloxane structures of unsaturated aliphatic modified polyether siloxane copolymers are also taught.
Cette invention dévoile des additifs hydrophiles de gels de polysiloxane, d'élastomères et de revêtements, et de nouveaux procédés pour les produire. Le procédé comprend : (a) la redistribution d'un silane ou d'un siloxane insaturé dans des copolymères polysiloxane-polyéther, (b) l'addition au mélange de réactifs, en quantité catalytiquement efficace, d'un catalyseur de base, et (c) le chauffage du mélange réactionnel afin de réaliser la réaction. On y apprend aussi de nouvelles structures siloxaniques de copolymères siloxane-polyéther modifiés par des groupements aliphatiques insaturés.
Lewis Kenrick M.
Yu Hua
Company General Electric
Osi Specialties Inc.
Sim & Mcburney
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