Water-dispersible hot melt adhesives and products using same
A water-dispersible hot melt adhesive comprises 75-95 parts of a graft copolymer of about 40-80% vinyl monomer and about 20-60% by weight of water-soluble polyalkylene oxide polymer, and 5-25 parts by weight tackifying resin. The water-soluble polyalkylene oxide polymer has a molecular weight of about 3000 to 20,000 and a polymerized ethylene oxide content of at least 50% by weight. The vinyl monomer is preferably a vinyl acetate or low molecular weight alkyl-substituted acrylate. The adhesive is preferably 75-85% copolymer and 15-25% by weight tackifying resin.