| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a crosslinked expanded adhesive which is uniformly and sufficiently crosslinked and expanded independently of the transmittance of the radiation such as ultraviolet rays, electron beams, etc., against the components, shows an excellent stress relaxation property, memory effect and solvent resistance and has no disadvantage which usually accompanies low- molecular-weight acrylic copolymers. SOLUTION: The crosslinked, expanded adhesive having restorability is obtained by crosslinking and expanding a heat-crosslinkable, heat-expandable composition containing an adhesive polymer having a molecular weight of 100,000, a heat-crosslinking agent and a heat-foaming agent, through heating.</p> |
