COATING RESIN COMPOSITION, AND ITS CURING

PROBLEM TO BE SOLVED: To obtain the subject composition capable of easily reacting with a polyisocyanate to form a coating film excellent in water repellency, mold releasability, etc., by reacting a polyurethane resin derivative having polydimethylsiloxane side chains and isocyanate groups with a hy...

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Bibliographische Detailangaben
1. Verfasser:	AYAMA KYOICHI
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES FILLING PASTES INKS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To obtain the subject composition capable of easily reacting with a polyisocyanate to form a coating film excellent in water repellency, mold releasability, etc., by reacting a polyurethane resin derivative having polydimethylsiloxane side chains and isocyanate groups with a hydroxyl group- containing resin. SOLUTION: (A) A polyurethane resin derivative having dimethylsiloxane side chains and isocyanate groups on a polyurethane molecular main chain is reacted with (B) a hydroxyl group-containing resin (e.g. an acrylic polyol) to obtain the objective composition. The polyurethane resin derivative A is obtained by reacting (i) a polydimethylsiloxane of formula I [(R is a 1-4C alkyl; R is ethylene, etc.; R is H, etc.; R is hydroxyl, etc.; (n) is 0-100; (p) is 0-100; (m) is 2-9] with (ii) a polyisocyanate of formula II [Et is ethyl; R is (CH2 )6 , etc.) as essential components.