Liquid curable resin composition for optical fibers
AssigneesDsm N.V., Japan Synthetic Rubber Co., Ltd.
InventorsMitsuhito Suwa, Zen Komiya, Yuji Takasugi, Takashi Ukachi
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Abstract
A liquid curable resin composition for optical fibers comprising a polymer (a) having a number average molecular weight of 5,000 or more and containing at least two types of recurring ethylenic units, of which one type has a substituent group containing an ethylenically unsaturated group and the second type is substituted by a group —COOR3 (wherein R3 is a hydrogen atom or a hydrocarbon group having 1-30 carbon atoms), an aryl group, a cyano group, an alkyl group having 1-10 carbon atoms or by one or more halogen atoms.
Claims43
A liquid curable resin composition comprising:
- (a) a polymer having a number average molecular weight of 5,000 or more and containing polymeric units represented by formulas (1) and (2),
- wherein R1 and R2 independently represent a hydrogen atom or a methyl group, X represents a —COOR3 group (wherein R3 is a hydrogen atom or a hydrocarbon group having 1-30 carbon atoms), an aryl group, a cyano group, a halogen atom or alkyl group having 1-10 carbon atoms and Y represents a functional group containing a (meth)acryloyloxy group;
- and
- (b) 10-80% by weight of the resin composition of a urethane (meth)acrylate oligomer having a number average molecular weight of 350 to 20,000, said oligomer being obtained by reacting
- (i) a polyol or polyamine compound;
- (ii) a polyisocyanate compound;
- and
- (iii) a (meth)acrylate compound having a hydroxy group
- (iv) optionally, a functional silane.
A coated optical fiber comprising a cured composition, wherein said composition comprises, prior to cure:
- (a) a polymer having a number average molecular weight of 5,000 or more and containing polymeric units represented by formulas (1) and (2),
- wherein R1 and R2 independently represent a hydrogen atom or a methyl group, X represents a —COOR3 group (wherein R3 is a hydrogen atom or a hydrocarbon group having 1-30 carbon atoms), an aryl group, a cyano group, a halogen atom or alkyl group having 1-10 carbon atoms and Y represents a functional group containing a (meth)acryloyloxy group.
An optical fiber ribbon assembly comprising a cured composition, wherein said composition comprises, prior to cure:
- (a) a polymer having a number average molecular weight of 5,000 or more and containing polymeric units represented by formulas (1) and (2),
- wherein R1 and R2 independently represent a hydrogen atom or a methyl group, X represents a —COOR3 group (wherein R3 is a hydrogen atom or a hydrocarbon group having 1-30 carbon atoms), an aryl group, a cyano group, a halogen atom or alkyl group having 1-10 carbon atoms and Y represents a functional group containing a (meth)acryloyloxy group.
Dependencies are inferred from the claim text.