Takemoto Yushi Kabushiki Kaisha

Teijin Dupont Films Japan Limited

Other

Ricoh Company, Ltd.

Tatsuhiko Osaki

Tetsuo Ichihashi

Masanori Suzuki

Toyoshi Sawada

Yohichiroh Watanabe

Takuya Saito

Keiko Shiraishi

Satoshi Aratani

Hiroki Ogiso

Hisashi Okuyama

Takeshi Kanamori

Mamoru Yasui

Yasumasa Horibe

An aliphatic polyester resin composition, useful for producing molded articles without causing deformation at the mold release time, has a non-copolymerized mixture of an aliphatic polyester resin including one or more polylactic acid resins and a crystallization nucleating agent including one or more metal salts of an aromatic sulfonate of Formula 1: 

Aliphatic polyester resin compositions, molded articles of aliphatic polyester resin and method of producing same

An ultraviolet radiation absorbent for thermoplastic polymer materials such as polyethylene terephthalate or polycarbonate contains cyclic imino ester compound of a specified structure in an amount of over 99.5 weight % and less than 100 weight % and having an acid value in the range of 1&#xd7;10&#x2013;1 and/or a chlorine ion content in the range of 1&#xd7;10&#x2013;1&#xd7;10ppm.

Method of producing ultraviolet radiation absorbent

An ultraviolet radiation absorbent for thermoplastic polymer materials such as polyethylene terephthalate or polycarbonate contains cyclic imino ester compound of a specified structure in an amount of over 99.5 weight % and less than 100 weight %, having the melt beginning temperature obtained by melting point measurement in differential thermal analysis within the range of 300&#x2013;310&#xb0; C. and/or the weight loss beginning temperature obtained by thermogravimetric measurement within the range of 270&#x2013;305&#xb0; C.

Ultraviolet radiation absorbents for thermoplastic polymers and methods of producing same

A charge control agent containing a calcium salt of a sulfoisophthalic acid compound. A toner for developing an electrostatic latent image including the above charge control agent, a binder resin and a colorant.

Charge control agent, toner using same developer containing the toner and developing device containing the developer

An ultraviolet radiation absorbent is produced by a method including specified Step A, Step B and Step C. Step A is a process of causing an amidation of anthranilic acid and terephthaloyl dichloride in the presence of a solvent and an alkali to generate N,N'-bis(o-carboxyphenylterephthalamid) and separating a solid component containing N,N&#x2032;-bis(o-carboxyphenylterephthalamid) generated by this amidation. Step B is a process of separating a solid component containing cyclic imino ester compound of a specified kind. Step C is a process of processing the solid component separated in Step B with an alkaline solution and further washing with water to obtain the ultraviolet radiation absorbent for thermoplastic polymers containing cyclic imino ester compound of the specified kind.

A charge control agent containing a barium salt of a sulfoisophthalic acid compound and optionally a metal salt of a salicylic acid compound. A toner for developing an electrostatic latent image comprising such a charge control agent, a binder resin and a colorant.

Charge control agent and toner using same

An ultraviolet radiation absorbent for thermoplastic polymer materials such as polyethylene terephthalate or polycarbonate contains cyclic imino ester compound of a specified structure in an amount of over 99.5 weight % and less than 100 weight % and having an acid value in the range of 1&times;10 -1 and/or a chlorine ion content in the range of 1&times;10 -1&times;10 ppm.

Growing community of inventors

Gamagori, Japan

Tatsuhiko Osaki