Asahi Glass Company, Limited

Yukio Tsuge

Satoshi Niiyama

Hiroshi Wada

Yoshinobu Kadowaki

Hiroshige Ito

Naoko Aoki

Tomeyoshi Ohori

To provide a curable resin composition for forming a seal part, which is capable of easily forming a continuous seal part and which is capable of maintaining the shape of the seal part during a period of from immediately after the formation of an uncured seal part until a liquid material is supplied to a region enclosed by the seal part and the seal part is cured, and a laminate which has minimal defects and whereby a resin layer interposed between first and second plates can be made thick. One having a viscosity of from 500 to 3,000 Pa&#xb7;s at 25&#xb0; C. is used as the curable resin composition for forming a seal part to form an uncured seal partenclosing the periphery of a liquid material (curable resin compositionfor forming a resin layer) interposed between a first plate (display device) and a second plate (transparent plate).

Curable resin composition for forming seal part, laminate and process for its production

Provided are a urethane resin solution to provide a urethane resin having a low tensile elasticity, a low elastic modulus under low temperatures, good elastic recovery, excellent heat resistance and excellent adhesion, a production method of the solution and a production method of the urethane resin. An isocyanate group-terminated prepolymer is synthesized by reacting a polyisocyanate compound with a polyetherester diol having a molecular weight of from 800 to 4,000, which is obtained by a ring-opening polymerization of a mixture of an alkylene oxide and a lactone monomer using a polyoxy tetramethylene diol having a molecular weight of from 500 to 2,500 as an initiator and using a composite metal cyanide complex catalyst if necessary, and the resulting prepolymer is reacted with a chain extender, for example, comprised of a low molecular weight diamine and/or a low molecular weight diol, in an organic solvent. The urethane resin solution obtained is molded into a predetermined shape, or a substrate is coated or impregnated with the urethane resin solution and thereafter the organic solvent is removed to obtain a urethane resin.

Urethane resin solution, process for its production and process for producing urethane resin

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Tokyo, Japan

Yukio Tsuge