URETHANE PAINT COMPOSITION

• Main Authors: ASAI TOMOHITO, OHATA MASATOSHI
• Format: Patent
• Language: English
• Published: 15.10.2003
• Edition: 7
• Subjects: 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 BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; 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

PROBLEM TO BE SOLVED: To provide a two-liquid urethane-type low VOC (volatile organic chemicals) paint containing a high solid-type polyol as a binder. SOLUTION: The paint composition comprises (a) an acrylic polyol with a hydroxy group value of 80-200, a number average molecular wt. of 1,500-3,000, a wt. average molecular wt. of 2,500-6,000, a solid component ratio of 65-85 wt.% and viscosity of Z or less determined with a bubble viscometer at 25°C and (b) an isocyanate curing agent. The above acrylic polyol is prepared by polymerization of a monomer mixture consisting of 5-60 wt.% isobornyl(meth) acrylate, 35-60 wt.% ethylenic unsaturated monomer containing a hydroxy group and 0.1-5 wt.% ethylenic unsaturated monomer containing a carboxy group with an equivalent ratio of (a) the acrylic polyol to (b) the isocyanate curing agent is 1/0.2-to 1/1.8. COPYRIGHT: (C)2004,JPO