| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a tackifier for an aqueous adhesive with which adhesion properties such as retention, constant load peelability, etc. are satisfied and further which is water-resistant, while having excellent adhesion to surfaces of a foam substrate and an olefin-based resin such as a polyurethane foam and a polypropylene foam, a tackifier for an aqueous adhesive which is able to contain whatever acrylic polymer emulsion without limitation of kinds of acrylic polymer emulsions, a tackifying resin emulsion, an aqueous adhesive composition, and a bonding method to a rough surface. <P>SOLUTION: The aqueous adhesive uses a liquid polymerized rosin ester which is liquid at 15-25°C as the tackifier. Preferably the tackifier for the aqueous adhesive includes the polymerized rosin ester which is obtained by an esterification reaction of a polymerized rosin and a hydroxy group-containing compound having one and/or two hydroxy groups. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
