Sumitomo Seika Chemicals Co., Ltd.

Advanced Softmaterials Inc.

Unicharm Corporation

Naoyuki Hashimoto

Yusaku Masuhara

Kiyoshi Nishioka

Hiroki Ishikawa

Takushi Yamamoto

Satoshi Nishiguchi

Ryosuke Murakami

Yozo Yamada

Shinichi Takemori

Rie Kiyomoto

Naoki Sainou

Tokushi Koda

Manabu Nagata

Provided is an alkyl-modified carboxyl group-containing copolymer with which a neutralized viscous liquid can be prepared which has excellent dispersibility in water, has a viscosity that does not change greatly regardless of addition of an electrolyte, and has high transparency in the presence of an electrolyte. This alkyl-modified carboxyl group-containing copolymer contains: 100 parts by mass of a (meth)acrylic acid; 1.5-4.5 parts by mass of a (meth)acrylic acid alkyl ester, in which an alkyl group has 18-24 carbon atoms; and 0-0.1 parts by mass of a compound having two or more ethylenically unsaturated groups, wherein the copolymer contains 1.5-4.5 parts by mass of a nonionic surfactant.

Alkyl-modified carboxyl group-containing copolymer, thickener containing said copolymer, and method for preparing said copolymer

The present invention aims to provide a polyrotaxane-containing composition having excellent transparency. The present invention relates to a polyrotaxane-containing composition including: a polyrotaxane that has a cyclic molecule, a linear molecule threading through a cavity of the cyclic molecule in a skewered manner, and capping groups capping both ends of the linear molecule; and an alkyl (meth) acrylate that has a C4-C18 alkyl group, the polyrotaxane having at least one cyclic molecule that has a C4-C18 alkyl group.

Polyrotaxane-containing composition

The present invention aims to provide a polyester resin composition capable of producing a molded article having excellent stretchability. The present invention also aims to provide a molded article including the polyester resin composition. The present invention relates to a polyester resin composition including: a polyester resin; and a polyrotaxane that has a cyclic molecule, a linear molecule threading through a cavity of the cyclic molecule in a skewered manner, and capping groups capping both ends of the linear molecule.

Polyester resin composition and molding

The present invention aims to provide a composition for soft materials, which enables production of a soft material excellent in transparency, a stress relaxation property, and strength and having an elongation property that is not so much lowered even at high temperatures. The present invention also aims to provide a soft material produced using the composition for soft materials of the present invention. The present invention relates to a composition for soft materials including polyrotaxane and a radical polymerizable monomer, the polyrotaxane including a cyclic molecule, a linear molecule threading through a cavity of the cyclic molecule in a skewered manner, and capping groups that cap both ends of the linear molecule, the polyrotaxane having at least one cyclic molecule with a radical polymerizable group, the polyrotaxane having at least two radical polymerizable groups.

Composition for soft materials, and soft material

High water-absorbent resin composition

Growing community of inventors

Chiba, Japan

Naoyuki Hashimoto