Radiation-curable composition with simultaneous color formation during cure
AssigneeDsm N.V.
InventorsLin Jibing, Montgomery I. Eva, Snowwhite E. Paul JR., Petisce R. James, Kotesky Anton
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Abstract
A radiation-curable fiber optic coating composition for an inner primary coating includes a coloring agent, preferably a dye or a dye precursor, compatible with the fiber of the fiber optic and capable of imparting a pre-selected color to the inner primary coating, or another coating. The coloring agent can be a reactive dye. Any of the dyes preferably is stabilized by a stabiliser in the colored coating layer, or, preferably, in a more exterior layer.
Claims35
A radiation-curable fiber optic coating composition for an inner primary coating, comprising, in the uncured state, at least one monomer or oligomer having a radiation-curable functional group which can form free radicals in the presence of actinic radiation, a photoinitiator for said monomer or oligomer present in an amount sufficient to effect radiation cure of said monomer or oligomer, and a coloring agent capable of imparting a pre-selected color to the inner primary coating.
A substantially colorless radiation-curable fiber optic coating composition for a member selected from the group consisting of an outer primary coating, a single coating, a buffering composition, an ink composition, and matrix materials which comprises, in the uncured state, at least one monomer or oligomer having a radiation-curable functional group which can form free radicals in the presence of actinic radiation, a photoinitiator for said monomer or oligomer present in an amount sufficient to effect radiation cure of said monomer or oligomer, a substantially colorless dye precursor capable of forming a chromophore in said composition in the presence of a cation, and a cationic photoinitiator, said composition capable of curing to a pre-selected color upon exposure to actinic radiation.
The coating composition system comprising a plurality of coatings in which a first coating comprises a dye as a coloring agent, and in which the same, or a coating exterior to the coating comprising the coloring agent, comprises a stabilizer package to protect the dye in said composition.
A radiation-curable fiber optic coating composition for a member selected from the group consisting of an inner primary coating, an outer primary coating, a single coating, a buffering composition, an ink composition, and matrix materials which comprises, in the uncured state, at least one monomer or oligomer having a radiation-curable functional group which can form free radicals in the presence of actinic radiation, a photoinitiator for said monomer or oligomer present in an amount sufficient to effect radiation cure of said monomer or oligomer, and a coloring agent, wherein said coloring agent comprises at least one reactive dye or dye precursor and said dye or dye precursor includes ethylenic unsaturation.
The fiber optic coating composition of anyone of 29 or 30 wherein said coating composition is an outer primary composition.
Dependencies are inferred from the claim text.