Nof Corporation

Nippon Oil Fats Co., Ltd.

Kinki University

Kose Corporation

Eiji Harata

Yosuke Matsuoka

Norio Iwakiri

Shu Takashima

Koh Kobayashi

Shunsuke Sakurai

Yuji Masubuchi

Ryuya Gotanda

Noriaki Nagai

Norikazu Takizuka

Ryo Sasaki

Yuki Munekata

Masato Sugiura

Takashi Takeshita

Kei-Ichi Maruyama

The invention is a phosphorylcholine group-containing vinyl monomer represented by the following formula (1): in the formula (1) R represents an alkylene group having 1 to 6 carbon atoms, and n represents an integer of 1 to 6. The invention provides a phosphorylcholine group-containing vinyl monomer useful as a raw material for a hydrogel having a lowered water content while maintaining surface hydrophilicity.

Phosphoryl-choline-group-containing vinyl monomer

Provided is a monomer composition for contact lenses, which uses a polysiloxane monomer to produce a polymer that shows satisfactory surface hydrophilicity and oxygen permeability, and that is excellent in modulus and elongation at break. It has been found that a monomer composition containing a phosphorylcholine group-containing polysiloxane monomer, a monovinyl ether monomer, and the like can achieve the above-mentioned object.

Monomer composition for contact lenses, polymer for contact lenses and method for producing same, and contact lens and method for producing the same

Provided are an ocular surface drug-retaining agent that enables an excellent improvement in retainability of a medicament on an ocular surface and an eye drop containing the agent. An ocular surface drug-retaining agent containing a copolymer having three different kinds of constituent units at a specific ratio can express an excellent effect of retaining a medicament on an ocular surface (in particular, a corneal surface) to allow the effect or action of the drug to be sustained over a long period of time.

Ocular surface drug retention agent, eye drop containing the same, and method for retention of ocular surface drug using the same and method for treating ocular disease

Provided is a contact lens that can exhibit excellent breaking elongation and surface hydrophilicity even when produced using a hydrophobic mold made of polypropylene or the like without performing a surface hydrophilic treatment. Further provided are a monomer composition and a polymer that can be suitably used for obtaining the contact lens. This monomer composition contains (A) a siloxanyl group-containing itaconic acid diester monomer, (B) an amide group-containing monomer, (C) a hydroxy group-containing monomer, (D) a siloxanyl group-containing (meth)acrylate, and (E) a cross-linking agent in a specific ratio.

Monomer composition for contact lenses, polymer for contact lenses, contact lens, and method of producing the contact lens

An antifogging paint composition for forming an antifogging coating film without generation of the running water trace. The antifogging paint composition contains a block or grafted copolymer comprising a hydrophilic polymer part formed from a vinyl monomer having a cross-linking functional group and a water-soluble vinyl monomer, and a hydrophobic polymer part formed from a non water-soluble vinyl monomer, and an acidic alkyl phosphate.

Antifogging coating composition and article coated therewith

Growing community of inventors

Kawasaki, Japan

Eiji Harata