AQUEOUS PRESSURE-SENSITIVE ADHESIVE COMPOSITION

• Main Authors: KOMORI JUICHI, MIYATA SHINYA, HATAKEYAMA ERI
• Format: Patent
• Language: English
• Published: 14.01.2010
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS AS ADHESIVES

PROBLEM TO BE SOLVED: To provide a one-pack aqueous pressure-sensitive adhesive having slight pressure-sensitive adhesiveness, adhesive strength with an adherend such as tackiness, cohesiveness, water resistance, and weatherability. SOLUTION: Provided is an aqueous dispersion which contains a urethane prepolymer (A) obtained by reacting a linear aliphatic multivalent isocyanate compound with a diol component and a polymerizable monomer (B). An aqueous adhesive composition is prepared by polymerizing the (B) component in the aqueous dispersion. In the composition, the acid value of the component (A) is 25-70 mgKOH/g, and the glass transition temperature of a polymer prepared by polymerizing the component (B) is -10°C or lower. COPYRIGHT: (C)2010,JPO&INPIT