Sekisui Chemical Co., Ltd.

Motokuni Ichitani

Yuki Hirose

Takayuki Maeda

Kenichi Ootsuki

Hiroji Fukui

Yasuhiro Nakatani

Katsunori Takahashi

Hideyuki Takahashi

Hiroshi Yoshitani

Hiroaki Takehara

Takeo Kuroda

Kazuhiro Kawabata

Daizo Ii

Yukio Ochitani

Katsuaki Sakashita

Toru Takahashi

The present invention provides a method for producing a slurry composition which realizes excellent dispersibility through simple steps. In addition, the present invention provides a slurry composition produced using this method. The present invention provides a method for producing a slurry composition containing inorganic powder, a polyvinyl acetal resin, and an organic solvent, the method comprising the steps of: mixing inorganic powder, a polyvinyl acetal resin (A) and an organic solvent for inorganic dispersion to prepare an inorganic dispersion; mixing a polyvinyl acetal resin (B) and an organic solvent for resin solution to prepare a resin solution; and adding the resin solution to the inorganic dispersion, the polyvinyl acetal resin (A) having a polymerization degree of 200 to 600, the polyvinyl acetal resin (B) having a polymerization degree of 800 to 4000, and an amount of the polyvinyl acetal resin (A) used in preparation of the inorganic dispersion being 0.1 to 20 parts by weight relative to 100 parts by weight of the inorganic powder.

Method for producing slurry composition

It is an object of the present invention to provide a polyvinyl acetal resin composition capable of giving a ceramic green sheet which has sufficient flexibility and is hardly damaged even when being formed into a thin film and comprises a polyvinyl acetal resin composition containing a polyvinyl acetal resin A and a polyvinyl acetal resin B incompatible with the polyvinyl acetal resin A, which is formed by acetalizing a mixed polyvinyl alcohol containing two or more kinds of polyvinyl alcohols wherein a phase composed of the polyvinyl acetal resin A and a phase composed of the polyvinyl acetal resin B form a sea-island structure.

Polyvinyl acetal resin composition

An object of the present invention is to provide a method for producing a cross-linked polyvinyl acetal resin, which can provide a cross-linked polyvinyl acetal resin having high mechanical strength and excellent solvent resistance by a simple method without a cross-linking agent, and can solve such problems as sheet attack, insufficient strength, and instability of viscosity for a long-time storage, and another object of the present invention is to provide a cross-linked polyvinyl acetal resin produced by the above method for producing a cross-linked polyvinyl acetal resin. The method for producing a cross-linked polyvinyl acetal resin comprises the step of irradiating a polyvinyl acetal resin at least having structural units represented by the following formulas (1) to (4) with ultraviolet light having a wavelength in a range of 200 to 365 nm, wherein Rrepresents a hydrogen atom or a C1-C20 hydrocarbon group; and Rrepresents a group having two or more functional groups, the two or more functional groups each selected from the group consisting of the functional groups represented by the following formulas (5), (6), and (7). 

Method for production of crosslinked polyvinyl acetal resin, and crosslinked polyvinyl acetal resin

It is the object of the present invention to provide a binder resin for coating paste, comprising a polyvinyl acetal type resin, having an excellent dispersibility of inorganic powder such as conductive powder, ceramic powder and glass powder and being capable of exerting an extremely excellent coating property, particularly a printing property, when dispersing the inorganic powder to form paste, conductive paste, ceramic paste and glass paste. in the formulas, Rrepresents a straight chain or branched alkyl group having 1 to 20 carbon atoms, and Rrepresents hydrogen, a straight chain, branched or cyclic alkyl group having 1 to 20 carbon atoms, or an aryl group; and n represents an integer of 1 to 8; and further in the modified polyvinyl acetal resin, a content of the structural unit represented by the general formula (3) is 1 to 20 mol % and a content of the structural unit represented by the general formula (4) is 30 to 78 mol %.

Binder resin for coating paste

It is an object of the present invention to provide a spacer for a liquid crystal display and a method of producing a spacer for a liquid crystal display, which improve light leakage around a spacer for a liquid crystal display in cutting off light of a liquid crystal display and in vibrating a liquid crystal display and in addition have a good dry spraying property. The present invention relates to a spacer for a liquid crystal display, which comprises a base particle and a polymer coating the surface of said base particle, a contact angle Aof water on the spacer, measured at 25&#xb0; C. when said spacer is annealed at a temperature of an annealing temperature Tor higher in fabricating a liquid crystal display for 1 hour or more and then cooled, and a contact angle B of water on the spacer, measured at 25&#xb0; C. without annealing the spacer, satisfying the relationship of the following equation (1):1&#x2212;&#x2267;1&#xb0;.&#x2003;&#x2003;(1)

Spacer for liquid crystal display and process for producing the same

This invention provides a photoreactive composition in which reaction of a hydrolyzable metal compound takes place by irradiation of light. A photoreactive composition, which comprises a hydrolyzable metal compound (A) comprising a metal atom and a hydrolyzable functional group bonded to the metal atom and, a compound (B) promoting reaction, polymerization or crosslinking of the compound (A) in the presence of oxygen by irradiation of light.

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Shiga, Japan

Motokuni Ichitani