Curable composition and fluorinated cured product

C - Chemistry – Metallurgy – 08 – F

Patent

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Details

C08F 14/18 (2006.01) C08F 2/44 (2006.01) C08F 259/08 (2006.01) C08F 279/00 (2006.01) H01L 33/00 (2006.01)

Patent

CA 2655180

Disclosed is a curable composition which enables to obtain a fluorine-containing cured product which is excellent in transparency, light resistance, heat resistance and mechanical strength, and hardly damaged by stress concentration. Specifically disclosed is a curable composition characterized by containing a perfluoro polymer (a) containing a unit derived from a perfluorodiene having two polymerizable carbon-carbon double bonds, wherein two carbon atoms in one carbon-carbon double bond form the main chain and one carbon-carbon double bond forms a side chain; a perfluorocyclic monoene (b) having 8 or more carbon atoms, which has an alicyclic structure composed of carbon atoms and optionally containing an oxygen atom, and one polymerizable carbon-carbon double bond, wherein at least one of the two carbon atoms forming the carbon-carbon double bond is the carbon atom constituting the alicyclic structure; and a polymerization initiator (i).

L'invention décrit une composition durcissable permettant d'obtenir un produit durci contenant du fluor présentant une transparence, une excellente résistance à la lumière, à la chaleur et aux forces mécaniques, et n'est guère endommagée par une accumulation de contraintes. L'invention concerne de façon spécifique une composition durcissable caractérisée par le fait qu'elle contient un polymère perfluoré (a) contenant une unité provenant d'un perfluorodiène ayant deux doubles liaisons carbone-carbone polymérisables, deux atomes de carbone dans une double liaison carbone-carbone formant la chaîne principale et une double liaison carbone-carbone formant une chaîne latérale ; un monoène perfluorocyclique (b) ayant 8 atomes de carbone ou davantage, possedant une structure alicyclique composée d'atomes de carbone et contenant facultativement un atome d'oxygène et une double liaison carbone-carbone polymérisable, au moins l'un des deux atomes de carbone formant la double liaison carbone-carbone étant l'atome de carbone constituant la structure alicyclique ; et un initiateur de polymérisation (i).

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