Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making
Patent
1993-04-13
1994-06-21
McCamish, Marion E.
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
522 25, 522 26, 522 27, 522 29, 522 59, 522 75, 522121, 522 15, 522 16, 430915, 430945, 430947, C08F 250, C08F 2020, G03F 7031, G03F 7105
Patent
active
053227620
ABSTRACT:
A highly stable photopolymerizable composition which is highly photosensitive to visible light, which can be hardened using a visible light laser, such as an argon laser, which provides excellent contrast between non-irradiated portions and the substrate under red light, and, moreover, which provides excellent contrast between the portions irradiated by the laser and the portions not irradiated. The photopolymerizable composition consists of 100 parts by weight of a resin which is hardenable under visible light having an irradiation energy mainly consisting of light rays in the 400 nm to 700 nm visible light region; 0.02 to 0.5 parts by weight of at least one dye selected from the group consisting of Victoria Pure Blue, anthraquinone dyes, monoazo dyes, and merocyanine dyes, these dyes having maximum absorption wavelengths from 550 to 700 nm; 0.1 to 5 parts by weight of the leuco dye 4,4'-(phenylmethylene bis[N,N-diethylbenzene amine]; and 0.1 to 5 parts by weight of tribromomethylphenyl sulphone.
REFERENCES:
patent: 3109736 (1963-11-01), Sprague
Database WPI, Derwent Publications Ltd., AN-91-357889, JP-A-3 239 703, Oct. 25, 1991.
Database WPI, Derwent Publications Ltd., AN-84-191403, JP-A-59 107 344, Jun. 21, 1984.
Kushi Kenji
Tokuhara Chiho
Koeckert Arthur H.
McCamish Marion E.
Mitsubishi Rayon Co. Ltd.
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