Mitsui Chemicals, Inc.

Tatsuya Yamashita

Hirokazu Morita

Satoshi Yamasaki

Shinji Kiyono

Toshihiko Nakagawa

Shigeru Mio

Kazuki Sakata

Kazuyuki Fukuda

Aya Nakagawa

Yohei Koyama

Toru Yagi

A polycarbodiimide composition is obtained by subjecting a reaction product of a straight-chain aliphatic diisocyanate and alcohols to carbodiimidization, and the alcohols include a polyol and a monool; in the alcohols, a mole ratio (hydroxyl group derived from polyol/hydroxyl group derived from monool) of the amount of hydroxyl groups derived from the polyol to the amount of hydroxyl groups derived from the monool is below 2.0; and a carbodiimide equivalent of the polycarbodiimide composition is 300 g/mol or more and below 550 g/mol.

Polycarbodiimide composition, producing method of polycarbodiimide composition, aqueous dispersion composition, solution composition, resin composition, resin cured product, and carbodiimide cross-linking agent for fiber treatment

The polycarbodiimide composition is a reaction product of polyisocyanate having a primary isocyanate group with alcohol, wherein the alcohol contains at least one oxyethylene-containing alcohol containing an oxyethylene group, and at least one oxyethylene-noncontaining alcohol containing no oxyethylene group, the at least one oxyethylene-noncontaining alcohol has a solubility parameter of 11.20 (cal/cm)or less.

Polycarbodiimide composition, method for producing a polycarbodiimide composition, water-dispersed composition, solution composition, resin composition, and cured resin

A polycarbodiimide composition is a reaction product of polyisocyanate having a primary isocyanate group and alcohols, wherein in an infrared absorption spectrum, the intensity ratio (IR/IR) of absorbance IRat or near 2120 cmdue to stretching vibration of the carbodiimide group relative to absorbance IRat or near 1720 cmdue to stretching vibration of the uretonimine group and urethane group is 1.5 or more and 4.5 or less.

Polycarbodiimide composition, method for producing polycarbodiimide composition, aqueous dispersion composition, solution composition, resin composition, and cured resin

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Ichihara, Japan

Tatsuya Yamashita