Kureha Corporation

Kureha Chemical Industry Company, Limited

Tsukasa Ikeda

Takumi Katsurao

Masahito Tada

Kazuyuki Yamane

Kazuyuki Suzuki

Hiroki Katono

Yuki Hokari

Katsuichi Machida

Yasuhiro Suzuki

Masuhiro Syouji

Kenichi Iwabuchi

An aliphatic polyester resin composition of improved moisture resistance formed by adding a phosphoric or phosphorous acid ester having a basicity of at most 1.4 of a saturated aliphatic alcohol having 8-24 carbon atoms.

Aliphatic polyester resin composition

Polyvinylidene fluoride resin powder for melt molding, which exhibits such particle size distribution characteristics that the average particle diameter (D) is 80 to 250 &#x3bc;m, the proportion of resin powder having a particle diameter of at most 45 &#x3bc;m is at most 15.0% by weight, and the proportion of resin powder having a particle diameter of at least 355 &#x3bc;m is at most 10.0% by weight, and has a bulk density of 0.30 to 0.80 g/cmand an angle of repose of at most 40&#xb0;, and a process for producing a molding, which comprises feeding the resin powder to an injection molding machine or extrusion molding machine, melting the resin powder, and injecting the resin melt into a mold.

Polyvinylidene fluoride resin powder for melt molding and process for producing molding from the resin powder

The present invention provides a polyvinylidene fluoride copolymer capable of forming a uniform film, a solution of the copolymer and a thin film comprising the polyvinylidene fluoride copolymer. The polyvinylidene fluoride copolymer of the present invention is characterized in that the ratio of the scattered-light intensity (I) for a 15% solution of the polyvinylidene fluoride copolymer in dimethylformamide solvent to the scattered-light intensity (I) for dimethylformamide, (I/I), is 10 or lower. The polyvinylidene fluoride copolymer solution comprises the polyvinylidene fluoride copolymer and an organic solvent capable of dissolving the copolymer.

Process for preparing polyvinylidene fluoride copolymer

A near infrared absorptive composition of the present invention contains phosphate compounds represented by Formula (8)-c and Formula (8)-d below; and copper ions. An optical material of the present invention is a material wherein the near infrared absorptive composition is mixed in a resin.

Near-infrared-absorbing composition and optical material

Growing community of inventors

Fukushima, Japan

Tsukasa Ikeda