Disclosed is a gas-generating, pressure-sensitive adhesive composition comprising a pressure-sensitive, ultraviolet irradiation-curable adhesive (A) containing a photoinitiator, wherein the adhesive (A) transmits therethrough an ultraviolet radiation, and a gas generator compound (B) which generates
Disclosed is a gas-generating, pressure-sensitive adhesive composition comprising a pressure-sensitive, ultraviolet irradiation-curable adhesive (A) containing a photoinitiator, wherein the adhesive (A) transmits therethrough an ultraviolet radiation, and a gas generator compound (B) which generates a gas upon irradiation thereof with an ultraviolet radiation, wherein the gas generator compound (B) is operably combined with the pressure-sensitive, ultraviolet irradiation-curable adhesive (A), so that, in operation, when the gas-generating, pressure-sensitive adhesive composition which is adhered to an adherend is irradiated with an ultraviolet radiation, the gas generator compound (B) generates a gas and the gas effuses at an interface between the gas-generating, pressure-sensitive adhesive composition and the adherend to thereby facilitate release of the adherend from the gas-generating, pressure-sensitive adhesive composition.
대표청구항▼
1. A gas-generating, pressure-sensitive adhesive composition comprising:a pressure-sensitive, ultraviolet irradiation-curable adhesive (A) containing a photoinitiator, wherein said adhesive (A) transmits therethrough an ultraviolet radiation; and a gas generator compound (B) which generates a gas up
1. A gas-generating, pressure-sensitive adhesive composition comprising:a pressure-sensitive, ultraviolet irradiation-curable adhesive (A) containing a photoinitiator, wherein said adhesive (A) transmits therethrough an ultraviolet radiation; and a gas generator compound (B) which generates a gas upon irradiation thereof with an ultraviolet radiation, said gas generator compound (B) being operably combined with said pressure-sensitive, ultraviolet irradiation-curable adhesive (A), so that, in operation, when the gas-generating, pressure-sensitive adhesive composition which is adhered to an adherend is irradiated with an ultraviolet radiation, the gas generator compound (B) generates a gas and the gas effuses at an interface between the gas-generating, pressure-sensitive adhesive composition and the adherend to thereby facilitate release of the adherend from the gas-generating, pressure-sensitive adhesive composition. 2. The gas-generating, pressure-sensitive adhesive composition according to claim 1, wherein said gas generator compound (B) is a compound having an azido group.3. The gas-generating, pressure-sensitive adhesive composition according to claim 2, wherein said gas generator compound (B) is a compound having an organic azido group.4. The gas-generating, pressure-sensitive adhesive composition according to claim 3, wherein said gas generator compound (B) is a compound having an azidomethyl group.5. The gas-generating, pressure-sensitive adhesive composition according to claim 1, wherein said gas generator compound (B) is at least one compound selected from the group consisting of 3-azidomethyl-3-methyloxetane, 3,3-bis(azidomethyl)oxetane and a glycidyl azide polymer.6. The gas-generating, pressure-sensitive adhesive composition according to claim 5, wherein said gas generator compound (B) is a glycidyl azide polymer.7. The gas-generating, pressure-sensitive adhesive composition according to claim 1, wherein said adhesive (A) comprises at least one compound selected from the group consisting of a rubber polymer, an acrylic polymer, a polyether, a polyester, a polyisocyanate and a polyurethane.8. The gas-generating, pressure-sensitive adhesive composition according to claim 7, wherein said adhesive (A) further comprises a photopolymerizable oligomer.9. The gas-generating, pressure-sensitive adhesive composition according to claim 1, which is in the form of a sheet or a tape.10. The gas-generating, pressure-sensitive adhesive composition according to claim 9, which has a thickness of from 0.005 to 1 mm.
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