Kanebo, Limited

Konica Corporation

Kanebo Synthetic Fibers Ltd.

Hiroshi Naito

Masao Matsui

Kazuo Okamoto

Takatoshi Yajima

Hiromitsu Araki

Hideyuki Kobayashi

Tetsutaro Hashimura

Kenji Nakanishi

Takao Osagawa

Yoshioki Okubo

Tsutomu Naruse

Yoshimichi Ozawa

Toshiaki Yamazaki

Yoshihiro Wada

Ichiya Harada

Yasuo Muramoto

Kiyoshi Yoshimoto

Yoshiaki Morishige

Susumu Tokura

Masami Fujimoto

Takahiro Kubo

Masahiro Yama

Hitoshi Kawamoto

Tamotsu Matsutomi

Tsunahiro Nakae

Yoshioki Ohkubo

Katsumi Onishi

The present invention relates to a resin composition for foam, which is used as a packing cushioning material, and an object thereof is to provide said composition which has biodegradability and is made from a principal raw material, lactic acid capable of contributing to the protection of global environment. The object can be attained by a resin composition having biodegradability and expandability, comprising a high-molecular weight polylactic acid having a melt viscosity of 0.01 to 50 in terms of a melt index value (MI), characterized in that said resin composition is prepared by compounding 0.1 to 5% by weight of at least one compound, which is selected from a polyisocyanate having an isocyanate group of not less than 2.0 equivalents/mol, an epoxy compound having an epoxy group of more than 2.0 equivalents/mol and an acid anhydride having an anhydrous carboxyl group of more than 2.0 equivalents/mol, with a prepolymer made of lactic acid wherein a molar ratio of a L-isomer to a D-isomer is within arange from 95:5 to 60:40 or from 40:60 to 5:95, and reacting the resulting mixture.

Resin composition with biodegradability and foamability

Disclosed is a film constituted of a polyester, said film having a degree of roll set curl of not higher than 135 m.sup.-1 after being subjected to heat treatment, and having a degree of recovery curl of not higher than 45 m.sup.-1 after being subjected to hot water bath treatment.

Polyester layer support for photographic material

A support for photographic use comprised of at least two polyester layers is disclosed, which comprises a first layer containing a first polyester and a second layer containing a second polyester adjacent to the first layer, the first polyester comprising a first monomer unit from a polyalkylene glycol and a second monomer unit from an aromatic dicarboxylic acid having a metal sulfonate group, wherein the difference between the second monomer unit content of the first polyester and that of the second polyester, .DELTA.SIP is not more than 5.5 mol %, the second monomer unit content being expressed based on the total content of monomer units from dicarboxylic acids contained in the polymer.

Photographic support

Disclosed is a support for a photographic material which comprises a multilayer film in which a layer of a copolymerized polyester is laminated on at least one surface of a polyester layer, wherein the copolymerized polyester contains an aromatic dicarboxylic acid having a metal sulfonate group as a copolymer component in an amount of 2 to 7 mole % based on all ester bond units and further a polyalkylene glycol as a copolymer component in an amount of 3 to 10% by weight based on the total weight of a polyester which is a reaction product.

Support for photographic material

Multilayer polyester support of photographic material

Potentially elastic conjugate fiber, production thereof, and production

There is disclosed a copolyester which comprises at least four compositions of: (A) terephthalic acid, and/or its ester forming derivative (terephthalic acid component) and isophthalic acid and/or its ester forming derivative (isophthalic acid component) with a molar ratio of 30/70 to 70/30; (b) 5 to 15 mole % of a dicarboxylic acid having sulfonate group and/or its ester forming derivative based on the all dicarboxylic acid components; (C) an alicyclic dicarboxylic acid and/or its ester forming derivative; and (D) 50 mole % of ethylene glycol based on the all glycol components; and a polyester film which comprises a subbing layer containing the copolyester provided on at least one side of a polyester film base.

Copolyester and polyester film having said copolyester as subbing layer

A method of producing abrasive fibers is disclosed, which comprises providing a conjugate fiber comprising at least one abrasive layer containing abrasive particles and at least one coating layer substantially covering the abrasive layer, and removing at least a part of the coating layer from the conjugate fiber with a solvent or a decomposer to expose at least a part of the abrasive layer from the coating layer.

Method of producing abrasive fibers

Conductive composite filaments are disclosed that are formed by conjugate-spinning a conductive component composed of a thermoplastic polymer and/or a solvent soluble polymer and conductive metal oxide particles and a non-conductive component composed of a fiber-forming polymer.

Conductive composite filaments and methods for producing said composite

At least a part of the portion of a cleaning device to contact to the image retaining portion in a copying machine of a transferring system is composed of conductive composite fibers consisting of at least one conductive layer containing conductive fine particles and at least one nonconductive layer.

Cleaning device in a copying machine

Conductive composite filaments in which a conductive component composed of a synthetic thermoplastic fiber-forming polymer containing conductive carbon black and a non-conductive component composed of a synthetic thermoplastic fiber-forming polymer which is same as or different from the former polymer are continuously bonded in the longitudinal direction and in the cross-section the segments of the above described conductive component are radially extended to at least two directions and the segments of the above described non-conductive component fill between the conductive segments.

Conductive composite filaments

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Hohfu, Japan

Hiroshi Naito