WATER-BORN COMPOSITE RESIN DISPERSION AND ITS PRODUCTION

• Main Authors: SUZUKI YASUYUKI, TANAKA HISAKAZU
• Format: Patent
• Language: English
• Published: 21.12.1999
• Edition: 6
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED 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 obtain the subject aqueous composite resin dispersion that has a proper peel force without adverse effect on the adhesion of the adhesive by constructing a core/shell structure with a specific resin and a specific copolymer. SOLUTION: The objective dispersion is obtained by using (A) a water- dispersible polyurethane resin that includes a perfluoroalkyl group-containing segments, silicone-containing segments and bears carboxyl groups as a hydrophilic group and (B) a copolymer of an ethylenically unsaturated monomer, preferably having a glass transition point of >=40 deg.C so that they may have a core/shell structure. In a preferred embodiment, the perfluoroalkyl group- bearing segment has a structure of formula I (R2 is a 1-12C alkyl) and the weight ratio of the shell structure to the core structure is 3/7-8/2.