PRODUCTION OF VINYL ACETATE RESIN-BASED EMULSION AND AQUEOUS ADHESIVE

摘要

PROBLEM TO BE SOLVED: To obtain a vinyl acetate resin-based emulsion having excellent low temperature film formability and strength of adhesive bonding even in the case of not containing any plasticizer at all, and having high bonding strength even in low temperature curing. SOLUTION: This method for producing a vinyl acetate resin-based emulsion is to perform the seed polymerization of vinyl acetate in an ethylene-vinyl acetate copolymer resin-based emulsion to produce the vinyl acetate resin-based emulsion and to comprise the following processes: (1) the seed polymerization of vinyl acetate while adding it into the above reaction system; (2) the addition of a polymerizable unsaturated monomer other than vinyl acetate into the above reaction system independently of the addition of vinyl acetate during performing the process 1. The quantity consumed of the polymerizable unsaturated monomer is e.g. about 0.05-10 pts.wt. based 100 pts.wt. vinyl acetate. The polymerizable unsaturated monomer other than vinyl acetate can be e.g. at least one kind selected from the group consisting of acrylates, methacrylates and vinyl esters.