Amphiphilic co-networks, films made from amphiphilic...

C - Chemistry – Metallurgy – 08 – G

Patent

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C08G 77/14 (2006.01)

Patent

CA 2575616

The present invention relates to the production of amphiphilic copolymer networks or co-networks that are both hydrophobic and hydrophilic, the copolymer networks comprise polyalkylene glycol segments and disubstituted polysiloxane segments. Furthermore, the present invention relates to products and/or films made from the amphiphilic copolymer networks or co-networks produced in accordance with the synthesis methods of the present invention. In one embodiment, amphiphilic networks or co-networks are synthesized using functional multiblock co-polymers according to the formula (AY)x(BY)y, where A represents an alkylene glycol polymer having n repeating alkylene glycol units, B represents a disubstituted siloxane polymer having m repeating siloxane units, and Y represents a molecule (e.g., a silane) that functions both as a chain extender and a crosslinker.

La présente invention concerne la production de co-réseaux ou de réseaux copolymères amphiphiles qui sont, à la fois, hydrophobes et hydrophiles, les réseaux copolymères renfermant des segments de glycol de polyalkylène et des segments de polysiloxane disubstitués. En outre, cette invention a pour objet des produits et/ou des films fabriqués à partir des co-réseaux ou réseaux copolymères amphiphiles produits, selon les procédés de synthèse de cette invention. Dans un mode de réalisation, des co-réseaux ou réseaux amphiphiles sont synthétisés au moyen de copolymères multiséquencés fonctionnels, selon la formule (AY)x(BY)y, dans laquelle A représente un polymère de glycol d'alkylène à n unités de glycol d'alkylène de répétition, B représente un polymère de siloxane disubstitué à m unités de siloxane de répétition et Y représente une molécule (par exemple, un silane) qui agit, à la fois, comme un allongeur de chaîne et un agent de réticulation.

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