AQUEOUS RESIN COMPOSITION, COATING AGENT AND ADHESIVE

• Main Authors: OOHAYASHI HIROHARU, HAYASHI KAZUTOSHI, AKIYAMA HAJIME, OISHI HIROSHI
• Format: Patent
• Language: English
• Published: 27.09.1994
• Edition: 5
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; 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; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS AS ADHESIVES; USE OF MATERIALS THEREFOR; WOODSTAINS

PURPOSE:To obtain the subject composition having excellent adhesivity to an uncleaned polyolefin, stability, etc., by reacting an active hydrogen-containing polyolefin modified with an acid anhydride with an NCO-containing prepolymer and subjecting the remaining NCO to chain extension. CONSTITUTION:(A) An active hydrogen-containing polyolefin modified with an acid anhydride is reacted with (B) an NCO-containing urethane prepolymer in the ratio of the component A and the component B of (45-90):(10-55) by weight and in the equivalent ratio of active hydrogen of the component A and NCO of the component B of 1:2-1:30 and the remaining NCO is subjected to chain extension with a chain extender (preferably aliphatic diamine such as ethylenediamine) to give the objective composition. The component A, for example, is obtained by reacting a polypropylene with maleic anhydride to give an acid-modified polypropylene, dissolving the acid-modified polypropylene in a chlorine-based solvent, chlorinating with a chlorine gas, reacting the resultant substance with ethanolamine. The component B is preferably obtained by reacting an active hydrogen compound with a polyisocyanate in excess of NCO.