Mitsui Chemicals, Inc.

Masaki Sugawara

Hiroaki Sakaguchi

Masaaki Kawasaki

Akihiro Takahashi

Takeshi Ito

Yoshiharu Kikuchi

Takashi Hakuta

Takashi Abe

Mitsunao Arino

Kaoru Ueno

Mitsuko Nagai

Masao Kishi

Michio Sekine

Hideki Todoroki

Hisashi Hokonohara

The curable composition of the present invention contains (A1) a silyl-containing ethylene/&#x3b1;-olefin/non-conjugated polyene random copolymer rubber which has a structural unit derived from a norbornene compound as the non-conjugated polyene with at least one specific vinyl group at the terminal and contains a specific hydrolyzable silyl group, and (B) a compound, other than the rubber (A1), having a hydroxyl group and/or a hydrolyzable group, e.g., (B1) a compound having a silanol group and/or a compound which can react with moisture to form a compound having a silanol group in the molecule. This compound improves elongation of the cured product and residual surface tackiness, and, at the same time, is high in curing speed and capable of giving the cured product of high resistance to weather. It is suitable for, e.g., adhesives, tackifiers, paints, sealants, waterproof materials, spray materials, shaping materials and casting rubber materials.

Curable composition and its use

The present invention provides, in the preparation of a hot press molded board from a lignocellulose or an inorganic material as a main raw material, an isocyanate-based binder composition with which a board having eternally good releasability from a hot press plate, excellent physical properties and a low hygroscopic linear expansion coefficient can be obtained with improved productivity. The binder composition comprises (A) a compound having at least two isocyanate groups, (B) a low molecular weight polyethylene and (C) water as indispensable components.

Binder composition and process for manufacturing board by using the binder composition

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Yokohama, Japan

Masaki Sugawara