Nippon Kayaku Kabushiki Kaisha

Eiichi Nishihara

Masahiro Hirano

Masahiro Imaizumi

Naoyuki Ochi

Toyofumi Asano

Masaru Kudo

Sumio Ichimura

Toyohumi Asano

Masaru Kudou

Masataka Nakanishi

Yasumasa Akatsuka

Katsuhiko Oshimi

Hiroo Koyanagi

Yasumasa Akatuka

Makiko Kogo

Naoki Toneda

Kouta Yoshii

Sumio Itimura

Masayuki Itai

A liquid crystal sealing material comprising (a) a radiation curable resin represented by the general formula (1) below, (b) a photopolymerization initiator and (c) a filler having an average particle diameter of not more than 3 &#x3bc;m. (In the formula (1), Rrepresents a hydrogen atom or a methyl group; Rmay be the same or different and represents a hydrogen atom, a halogen atom, a hydroxyl group, a monovalent linear, branched or cyclic alkyl group having 1-10 carbon atoms or an alkoxy group having 1-10 carbon atoms; m represents an integer of 1-4; Rrepresents a hydrogen atom or a methyl group; Rrepresents a linear, branched or cyclic alkyl group having 1-10 carbon atoms; 1 represents a range of positive numbers from 1 to 5; and the repeating unit number n represents a range of positive numbers from 0 to 20.)

Radiation curable resin, liquid crystal sealing material, and liquid crystal display cell using same

An objective of this application is to provide a sealant for liquid crystals witch is extremely less apt to contaminate liquid crystals and has high adhesion strength. This application discloses a sealant for liquid crystals comprising as essential ingredients (a) a radiation-curable resin represented by the general formula (1): wherein Rrepresents a hydrogen atom or a methyl group, Rrepresents a hydrogen atom, a halogen atom, a hydroxyl group, a linear, branch or cyclic monovalent alkyl group having 1 to 10 carbon atoms, or an alkoxy group having 1 to 10 carbon atoms, m represents an integer of 1 to 4, and may be the same or different, Rrepresents a hydrogen atom or a methyl group, and the number n of the repeating units is a positive number in the range of 0 to 20; (b) a photopolymerization initiator; and (c) an inorganic filler having an average particle diameter of 3 &#x3bc;m or less.

Sealant for liquid crystal and liquid-crystal display cell made with the same

The present invention relates to a sealant for liquid crystals having extremely low contamination nature to a liquid crystal, excellent coatability and bondability to a substrate, long service life and pot life and high adhesive strength. A sealant for liquid crystals of the present invention is characterized by comprising (a) an epoxy resin represented by general formula (1): (wherein a represents an integer of 2 to 4; n represents 0 to 3 (average value); R represents a divalent hydrocarbon group of 2 to 6 carbon atoms; A represents a polyvalent aromatic group; and G represents a glycidyl group, provided that when n is 0, (a) an epoxy resin represented by general formula (1) is a bisphenol S-type.), (b) a thermo-curing agent, (c) and a filler having average particle diameter of not larger than 3 &#x3bc;m.

Liquid crystal sealing agent and liquid crystalline display cell using the same

To provide a photopolymerization initiator having an extremely low possibility of contaminating liquid crystals, and a liquid crystal sealing material using such a photopolymerization initiator. A liquid crystal sealing material comprising (a) a reactive photopolymerization initiator represented by the general formula (1) and (b) a photocurable resin: (wherein R1 represents a divalent straight chain, branched or cyclic lower alkylene group having 1 to 10 carbon atoms or an arylene group; R2 represents a divalent straight chain, branched or cyclic lower alkylene group having 1 to 10 carbon atoms or an arylene group; Ar represents an arylene group; R3 represents a hydrogen atom or a methyl group; X and Y respectively represent O or S; and Z is a hydroxyl group or a morpholino group).

Liquid crystal sealing material and liquid crystal display cell using same

Growing community of inventors

Kita-ku, Japan

Eiichi Nishihara