Photosensitive systems showing visible indication of exposure

Details Photosensitive systems showing visible indication of exposure Photosensitive systems showing visible indication of exposure

1984-04-30

1987-04-21

Kittle, John 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

430341, 430292, 430340, 430338, 430343, 430344, 430342, 430922, 430921, 430925, 430270, 252586, G03C 168, G03C 1727

Patent

active

046596496

ABSTRACT:
The invention provides new compositions which change color on exposure to actinic radiation and contain a photosensitive onium, e.g. iodonium or sulphonium, salt and a dyestuff which changes color when protonated. The compositions may also include a resin, especially a resin curable by the onium salt when the latter is exposed, and preferably an epoxy resin. The compositions are useful especially as coatings, e.g. for making screen stencils or for producing lithographic printing plates.

REFERENCES:
patent: 2066913 (1937-01-01), Schmieg
patent: 2618555 (1952-11-01), Reichel
patent: 3598592 (1971-08-01), Cescon
patent: 3729313 (1973-04-01), Smith
patent: 4026705 (1977-05-01), Crivello et al.
patent: 4163672 (1979-08-01), Stahlhofen
patent: 4193799 (1980-03-01), Crivello
patent: 4264703 (1981-04-01), Crivello
patent: 4350753 (1982-09-01), Shelnut et al.
patent: 4548890 (1985-10-01), Dickinson et al.
"Applications of Photoinitiated Cationic Polymerization Toward the Development of New Photoresists", by J. V. Crivello, A.C.S. Div of ORPL Papers, 48, (1983).
"Photoinitiated Catonic Polymerization by Sulphonium Salts", by J. V. Crivello, General Electric Company, Schenectacy, New York.

Affiliated with

Also associated with

Rating

Photosensitive systems showing visible indication of exposure does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Photosensitive systems showing visible indication of exposure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photosensitive systems showing visible indication of exposure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-751360