JPH0125771B

PURPOSE:The reaction of a blocked polyisocyanate with a polyol is carried out in the presence of a specific phenol derivative and an organotin compound to increase the catalytic effect and produce a polyurethane polymer used in a paint at a relatively low baking temperature. CONSTITUTION:The reactio...

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Bibliographische Detailangaben
Hauptverfasser:	SUENOBE YUKIKAZU, HIDAKA YASUHIRO, KOHARA MASANORI, KATSUYAMA KAZUKI, KINISHI RYOICHI
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:	PURPOSE:The reaction of a blocked polyisocyanate with a polyol is carried out in the presence of a specific phenol derivative and an organotin compound to increase the catalytic effect and produce a polyurethane polymer used in a paint at a relatively low baking temperature. CONSTITUTION:The reaction between (A) a blocked isocyanate (an addition product from a polyisocyanate and a blocking agent such as phenol) and (B) an active hydrogen-containing compound such as polyetherpolyol is carried out in the presence of (C) dialkyltin or diaryltin and/or monoalkyltin or monoaryltin compound such as dimethyltin oxide and (D) 4,4'-dimethyl-2,2'-dipyridyl or 2,4,6- tris(dimethylaminomethyl)phenol as catalysts to produce the objective polymer. The preferable amount of catalyst C is 0.1-1% and D is 0.4-40% based on component B.