Curable composition
AssigneeKansai Paint Co., Ltd.
InventorsYoshimasa Kinaga, Shigeo Murofushi, Kenji Seko
Life of this patent
Estimating the term…
Abstract
Disclosed is a curable composition consisting essentially of (i) a polymerizable double bond-containing resin prepared by introducing a polymerizable double bond-containing group into a polymer containing as a monomer a fluoroalkyl acrylate or methacrylate represented by the formula CH.sub.2 .dbd.C(R)--COO(CX.sub.2).sub.m (CF.sub.2).sub.n X (I) wherein R is methyl or hydrogen, X is fluorine or hydrogen, m is 1 or 2 and n is an integer of 1 to 12, and (ii) a fluoroalkyl acrylate or methacrylate of the formula (I).
Claims7
An optical fiber comprising:
- (a) a core fiber formed from a transparent material having a refractive index of about 1.43 to about 1.60;
- and
- (b) a cladding formed on said core, said cladding consisting essentially of:
- (i) a polymerizable double bond-containing resin prepared by reacting a copolymer comprising, as comonomers, (a) a fluoroalkyl acrylate or methacrylate represented by the formula (I)
- CH.sub.2 .dbd.C(R)--COO(CX.sub.2).sub.m (CF.sub.2).sub.n X (I)
- wherein R is methyl or hydrogen, X is fluorine or hydrogen, m is 1 or 2 and n is an integer of 1 to 12, and (b) a vinyl monomer containing a functional group for introducing a polymerizable double bond with a compound containing a functional group reactive with the functional group of the vinyl monomer and a polymerizable double bond to introduce the polymerizable double bond into the side chain of the copolymer;
- and
- (ii) a fluoroalkyl acrylate or methacrylate of the formula (I).
A cladding material for an optical fiber consisting essentially of:
- (i) a polymerizable double bond-containing resin prepared by reacting a copolymer comprising, as comonomers, (a) a fluoroalkyl acrylate or methacrylate represented by the formula (I)
- CH.sub.2 .dbd.C(R)--COO(CX.sub.2).sub.m (CF.sub.2).sub.n X (I)
- wherein R is methyl or hydrogen, X is fluorine or hydrogen, m is 1 or 2 and n is an integer of 1 to 12and (b) a vinyl monomer containing a functional group for introducing a polymerizable double bond with a compound containing a functional group reactive with the functional group of the vinyl monomer and a polymerizable double bond to introduce the polymerizable double bond into the side chain of the copolymer;
- and
- (ii) a fluoroalkyl acrylate or methacrylate of the formula (I).
In a method for forming an optical fiber having a core and a cladding by drawing a transparent material having an index of refraction of about 1.43 to about 1.60 into a fiber and coating the fiber surface with a cladding having a lower refractive index than the core, the improvement comprising using as a cladding material a composition consisting essentially of:
- (i) a polymerizable double bond-containing resin prepared by reacting a copolymer comprising, as comonomers, (a) a fluoroalkyl acrylate or methacrylate represented by the formula (I)
- CH.sub.2 .dbd.C(R)--COO(CX.sub.2).sub.m (CF.sub.2).sub.n X (I)
- wherein R is methyl or hydrogen, X is fluorine or hydrogen, m is 1 or 2 and n is an integer of 1 to 12, and (b) a vinyl monomer containing a functional group for introducing a polymerizable double bond with a compound containing a functional group reactive with the functional group of the vinyl monomer and a copolymerizable double bond to introduce the polymerizable double bond into the side chain of the copolymer;
- and
- (ii) a fluoroalkyl acrylate or methacrylate of the formula (I).
Dependencies are inferred from the claim text.