Hot melt adhesive crosslinkable by ultraviolet irradiation, opti

Details Hot melt adhesive crosslinkable by ultraviolet irradiation, opti Hot melt adhesive crosslinkable by ultraviolet irradiation, opti

1992-04-07

1993-07-13

Ryan, Patrick J.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 65, 428913, 430945, 346 76L, 3461351, B32B 300

Patent

active

052272133

ABSTRACT:
A hot melt adhesive crosslinkable by UV irradiation comprising a hot melt adhesive base, a saturated hydrocarbon oligomer containing at least one acryloyl group in a molecule for affording crosslinkability by UV irradiation, and a photopolymerization initiator, an optical disc comprising a pair of substrate, at least one of which is provided with an information recording layer, adhered to each other by means of a hot melt adhesive crosslinkable by UV irradiation and the process for preparing the same are disclosed. The adhesive of the present invention has a high heat resistance and heat stability, is applicable at a low temperature and at a low viscosity, has high softening point and high viscosity by UV irradiation. The optical disc of the present invention has high productivity, no corrosion and high heat resistance.

REFERENCES:
patent: 4253899 (1981-03-01), Takemoto
patent: 4430417 (1984-02-01), Heinz
patent: 4431723 (1984-02-01), Proskon
patent: 4556464 (1985-12-01), St. Clair
patent: 4574142 (1986-03-01), Charnock
patent: 4751124 (1988-06-01), Matsuzawa
patent: 4857434 (1989-08-01), Klingler
patent: 4948825 (1990-08-01), Sasaki

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