Sheet-form, curable pressure-sensitive adhesive
AssigneeSekisui Kagaku Kogyo Kabushiki Kaisha
InventorsAkira Nakasuga, Hiroji Fukui
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Abstract
A sheet-form, curable pressure-sensitive adhesive is disclosed which includes a high molecular weight polymer (A) such as an acrylic polymer for constituting a pressure-sensitive adhesive component, a compound (B) containing an epoxy group, and a polymerization initiator (C) which is activated upon application of an activation energy such as a light to cause the compound (B) having an epoxy group to undergo a ring-opening polymerization.
Claims11
A sheet-form, curable pressure-sensitive adhesive comprising a composition including:
- (A) an acrylic polymer having a weight average molecular weight in the range from several tens of thousands to 5 million;
- (B) a photopolymerizable compound containing an epoxy group the compound not being cured;
- and
- (C) a cationic polymerization initiator which, when a light is irradiated, initiates the compound (B) to undergo a ring-opening polymerization to cure the adhesive.
An energy polymerizable composition which is pressure-sensitive in its ordinary state and is capable of being cured upon application of an activation energy thereto, said composition comprising:
- (A) an acrylic polymer having a weight average molecular weight in the range from several tens of thousands to 5 million;
- (B) a photopolymerizable compound containing an epoxy group the compound not being cured;
- and
- (C) a cationic polymerization initiator which, when a light is irradiated, initiates the compound (B) to undergo a ring-opening polymerization to cure the adhesive.
Dependencies are inferred from the claim text.