PURPOSE: To obtain the subject compsn. which has stickiness before bonding, hence enables temporary bonding, and is hardenable under heating or in the absence of oxygen to give a strong adhesion, and also to provide a hardenable pressure-sensitive adhesive sheet made using the compsn.
CONSTITUTION: This adhesive compsn. is prepd. by compounding 100 pts.wt. sticky rubber-base resin, 5-200 pts.wt. unsatd. polyester oligomer obtd. by reacting a cyclic acid anhydride with an ethylenically unsatd. epoxide, 0.1-10 pts.wt. polymn. initiator, and 0.005-3 pts.wt. aluminum salt of N- nitrosophenylhydroxylamine. Thus are obtd. the objective compsn. and the objective sheet which are excellent in stickiness before hardening, adhesive strength after hardening, and storage stability.
YANAGI MASATO
TAKAHASHI HIDEYUKI
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