Dainippon Ink and Chemicals, Incorporated

Sun Chemical Corporation

Other

Katsuji Takahashi

Hisatomo Yonehara

Yoshinobu Sakurai

Mikhail Laksin

David Biro

Satoshi Idemura

Yoshio Ohashi

Masaru Uryu

Kunihiko Tokura

Michiya Nakashima

Takehisa Mizuno

Yuji Satoh

Yoshiyuki Ono

Yasuhiko Kojima

Hidenobu Ishikawa

Naohito Saito

Nagao Ariga

Yasuyuki Watanabe

Koji Oe

Kiyotaka Kawashima

Shinji Shimizu

Nansei Tashiro

Taku Kitamura

Masao Kamikura

Takashi Mihara

Shouji Imamura

Toshirou Ariga

Misao Uohama

Koichi Fujimoto

Minoru Yamamoto

Yuji Sath

Takayuki Akiyama

Noriko Kurokawa

Atsushi Miyakawa

Yoshinari Santo

Ikuko Ogawa

Takashi Furusawa

Masao Yamada

David Anthony Biro

An epoxy resin cured article has a high glass transition temperature and low dissipation factor. An epoxy resin composition from which the cured article can be having excellent solubility in solvents is used to produce the cured articles. A polyester as a curing agent of an epoxy resin composition having an aromatic polyhydroxy coumpound residue including an aryloxycarbonyl group at the molecule of the terminal, an aromatic polyvalent hydrocarbon group residue, and bulky structure, is used. Since the curing agent behaves as a polyfunctional curing agent, a cured article produced therefrom has a high crosslink density. Since highly polar hydroxyl groups are not formed during curing, a cured article has high glass transition temperature and a low dissipation factor. The cured article does not release low molecular weight carboxylic acids though hydrolysis of ester bonds at crosslinked bonds. Since the polyester has a bulky structure, the crystallization of the molecular chain is prevented and the solubility of the epoxy resin composition containing the polyester is excellent.

Epoxy resin composition

A method for controlling the cure rate of a water compatible non emulsion, non dispersing, actinic radiation curable composition containing a maleimide derivative

Water compatible energy curable compositions containing malemide derivatives

Active water compatible actinic radiation curable printing ink or coating compositions comprised of maleimide derivatives, water compatible resins and water, which are capable of curing at a practical intensity and energy level and a method for curing same.

A method for curing an active single phase water compatible actinic radiation curable composition, comprising: irradiating a water compatible non emulsion, non dispersing compound, water, and a maleimide derivative.

A lactic acid polyester (III), having a lactic acid unit (I) and a polyester unit (II) at a weight ratio within the range of 10:90 to 90:10, a weight average molecular weight of 10,000 or more, and a glass transition temperature of 60&deg; C. or below, imparts superior impact resistance to polyhydroxy carboxylic acids while maintaining superior flexibility and transparency and with minimal occurrence of bleedout.

Impact modifier and polyester composition containing the modifier

A loudspeaker in which the input resistance is improved and the effect of humidity on the playback frequency response is suppressed, and a method for the preparation of the loudspeaker. A sheet-like product, containing glass particles with a particle size of 8 nm to 300 nm and polyamide resin, and prepared by application of a paper-making technique, is used as the diaphragm. The content of the glass particles in the compound material is 5 weight % to 70 weight %. In preparing the diaphragm, a phase of an aqueous solution containing diamine and water glass is contacted with a phase of an organic solution containing a dicarboxylic acid halide to generate a compound material containing glass particles and the polyamide resin. The compound material so prepared is formed into a sheet by a paper-making technique. In the process of the preparation by the paper-making technique, the compound material mixed with other fibrous material may also be used as a starting material.

Loudspeaker and method for the preparation thereof

Active water compatible energy curable compositions comprised of maleimide derivatives, water compatible resins and water which are capable of curing at a practical intensity and energy level and a method for curing same.

Water compatible energy curable compositions containing maleimide derivatives

Resin composition and molded product

Loudspeaker diaphragm

In order to provide a computer-to-plate (CTP) plate in which an image can be inscribed by a laser beam having Ithe maximum strength in a near infrared or infrared region, and heat processing is not necessary prior to developing a latent image, and which allows the use of a conventional printing apparatus as it is upon printing, (I) a lithographic printing plate is provided which has on a substrate, a photosensitive layer comprising a photosensitive composition containing a crosslinking agent, an aqueous dispersion of resin fine particles made of a resin which is self water-dispersible having a carboxylic group and a functional group capable of performing cross-linking reactions with the crosslinking agent, and an infrared absorption agent; and (II) an image forming method is provided which is characterized in that after an image has been formed on a photosensitive layer of the lithographic printing plate set forth in the above (I) by using a laser beam, the image is subjected to wet development.

Lithographic printing plate and image forming method

Active energy ray curable composition comprised of a maleimide derivative and a method for curing the said curable composition

A flame-retardant thermoplastic resin composition is disclosed, comprising (A) a thermoplastic resin and (B-1) a halogenated epoxy resin whose epoxy groups are blocked by a long chain aliphatic carboxylic acid or (B-2) a mixture prepared by melt mixing (b1) a halogenated epoxy resin or (b2) a halogenated epoxy resin whose epoxy groups are blocked with (b3) a long chain aliphatic carboxylic acid. The composition has easy release from mold and satisfactory thermal stability during molding.

Flame-retardant thermoplastic resin composition, flame retardant, and

A flame-retardant thermoplastic resin composition is disclosed, comprising (A) a thermoplastic resin, (B) a halogenated bisphenol type epoxy resin flame-retardant, and (C) an organic phosphite compound. The composition exhibits improved thermal stability to provide molded articles having improved mechanical strength and appearance.

Flame-retardant thermoplastic resin composition

A flame-retardant synthetic resin composition containing (A) a synthetic resin and (B) a compound having a 3-halogeno-2-hydroxypropyl group, which shows excellent thermal stability during molding and having good light resistance, is disclosed. A flame retardant comprising a compound having a 3-halogeno-2-hydroxypropyl group is also disclosed.

Flame-retardant synthetic resin composition and flame retardant

A process for producing dihydric phenols is disclosed. The process comprises reacting a phenol with a ketone peroxide or a combination of a ketone and hydrogen peroxide in the presence of a compound having at least one P-S bond. Dihydric phenols can be produced in high yield without requiring neutralization after the reaction.

Process for producing dihydric phenols

Growing community of inventors

Sakura, Japan

Katsuji Takahashi