The invention relates to a radiation-curable composition for optical fiber coatings comprising about 10 wt.% to about 90 wt.% of at least one radiation-curable oligomer (A), about 10 wt.% to about 90 wt.% of at least one radiation-curable monomer diluent (B), and an effective amount of at least one photoinitiator (C) represented by formula (1), wherein Ar?1 to Ar3? are aromatic groups which may have one or more substitution groups.

Liquid curable resin composition

The invention provides an image display device that has an especially satisfactory display quality for animated images, and sufficiently suppresses the irregularities of display quality among pixels. The image display device includes a light emitting drive means that drives a light emitting means, based on an analog display signal inputted to the pixels, and a light emitting control switch for controlling a light-on or light-off of the light emitting means on one end of the light emitting drive means in each pixel.

Image Display Device

Disclosed is an improved, single-mode optical fiber possessing a novel coating system. When combined with a bend-insensitive glass fiber, the novel coating system according to the present invention yields an optical fiber having exceptionally low losses. The coating system features (i) a softer primary coating with excellent low-temperature characteristics to protect against microbending in any environment and in the toughest physical situations and, optionally, (ii) a colored secondary coating possessing enhanced color strength and vividness. The secondary coating provides improved ribbon characteristics for structures that are robust, yet easily entered (i.e., separated and stripped). The optional dual coating is specifically balanced for superior heat stripping in fiber ribbons, with virtually no residue left behind on the glass. This facilitates fast splicing and terminations. The improved coating system provides optical fibers that offer significant advantages for deployment in most, if not all, fiber-to-the-premises (FTTx) systems.

Microbend-Resistant Optical Fiber

A transparent composite composition which has a low coefficient of linear expansion, is excellent in transparency, heat resistance, and solvent resistance, and is usable as a glass substitute as, e.g., an optical sheet for liquid-crystal display elements and organic EL display elements. The transparent composite composition comprises a transparent resin (a) and a glass filler (b), wherein the transparent resin (a) is a copolymer obtained from at least one reactive monomer which, through crosslinking, comes to have a lower refractive index than the glass filler (b) and at least one reactive monomer which, through crosslinking, comes to have a higher refractive index than the glass filler (b).

Transparent composite composition

The present invention provides a curable composition, comprising: a (meth)acrylate urethane compound derived from a polypropylene glycol or a propyleneoxide ethyleneoxide copolymer glycol having a molecular weight between 1,000 and 13,000 and an amount of unsaturation less than 0.01 meq/g. The liquid curable resin composition of the present invention has improved liquid stability and can produce cured products having superior mechanical characteristics by polymerization. The composition further comprises preferably a primary or secondary amine. The liquid curable resin composition can be used as a coating material for optical fibers, adhesives, and the like. The composition is particularly suitable as a coating material for optical fibers for which long-term stability is required.

Radiation-curable resin composition

The invention aims to provide a curable liquid resin composition which produces a cured product having excellent surface slip characteristics and printability and has excellent liquid resin stability. This problem is solved by providing a curable liquid resin composition, comprising a silicone including an alkyl-modified siloxane unit and a polyether-modified siloxane unit.

Curable liquid resin composition

A radiation-curable composition for optical fiber coatings comprising about 10 wt. % to about 90 wt. % of at least one radiation-curable oligomer (A), about 10 wt. % to about 90 wt. % of at least one radiation-curable monomer diluent (B), and an effective amount of at least one photoinitiator (C) represented by formula (1): ##STR1## wherein Ar 1 to Ar 3 are aromatic groups which may have one or more substitution groups.

Radiation-curable liquid resin composition for coating optical fibers

An optical glass fiber coating composition comprising: (A) a urethane (meth)acrylate polymer, (B) a (meth)acrylate compound represented by formula (1), wherein R1 is a hydrogen or a methyl group, (C) a reaction diluent, and (D) a polymerization initiator. The composition has superior storage stability over a long period of time and, at a cured state, exhibits excellent UV resistance, heat resistance, yellowing resistance, and oil resistance.

Zen Komiya

Papers

Liquid curable resin composition

Radiation-curable resin composition

Curable liquid resin composition

Radiation-curable liquid resin composition for coating optical fibers

Optical glass fiber coating composition