Nitto-Denko Corporation

Toyo Polymer Co., Ltd.

Kenji Shimizu

Tadayuki Kameyama

Hiroaki Mizushima

Morimasa Wada

Ken Aoki

Youichirou Sugino

Michiro Goto

Yoshio Seki

Tomoya Genmoto

Yoichiro Sugino

Chie Ipponsugi

Naohito Higuchi

Provided is a polyurethane aqueous dispersion characterized in having practical utility in terms of processing suitability when a formed film is produced by salt coagulation method, and characterized in that a formed film obtained from the same has practical utility in terms of resistance against ethanol water. A polyurethane aqueous dispersion for a formed film, the formed film being obtained by using the polyurethane aqueous dispersion and a coagulant liquid in combination, is obtained by: neutralizing an isocyanate group-terminated prepolymer obtained by reaction of a polyisocyanate (A) composed of diphenylmethane diisocyanate and alicyclic diisocyanate, a random copolymer (B) of ethylene oxide and tetrahydrofuran, a polyol (C) having a number average molecular weight of 1000 to 5000, a polyhydric alcohol-based chain extender (D) having a number average molecular weight of 400 or less, and a diol compound (E) having a carboxyl group; and dispersing the obtained neutralized substance in water, and thereafter causing a chain extension reaction using an amine-based chain extender (F).

Polyurethane aqueous dispersion, formed film obtained from same, and glove

An adhesive for polarizing plate used in order to provide a transparent protective film on at least one surface of a polarizer, comprising a crosslinking agent in the range of more than 30 parts by weight and 46 parts by weight or less relative to 100 parts by weight of a polyvinyl alcohol-based resin having an acetoacetyl group, is excellent in water resistance.

Adhesive for polarizing plate, polarizing plate, method for producing same, optical film and image display

A process for producing a polarizing film including a step of stretching a raw film, wherein the ratio (L/W) of stretching distance (L) to width of initial raw film (W) is from 0.5 to 30.

Method of producing polarizing film, polarizing film and image display device using the same

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Ibaraki, Japan

Kenji Shimizu