Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Making printing plates
Patent
1980-03-03
1981-09-29
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Making printing plates
430162, 430273, 430309, 430331, 430 14, 430 17, 430 18, 101456, 101457, 101467, 101470, G03F 700, G03F 708
Patent
active
042923964
ABSTRACT:
A method of increasing the strength, abrasion resistance, solvent resistance, and press life of a lithographic image comprising a layer of light-reacted light sensitive material and an outer layer comprising an epoxy resin overlying the light-reacted layer. In the method, the surface of the outer layer is contacted and wetted with an aqueous solution comprising a least about 7% by weight of a boron trifluoride-amine complex. Solvent is evaporated from the solution on the surface to deposit dry boron trifluoride-amine complex on the outer layer and the outer layer is heated in the presence of the complex to cross-link the epoxy resin and form a hard, tough, abrasion-resistant, solvent-resistant and wear-resistant epoxy resin layer at the outside of the image. Further included in the invention are a curing composition adapted for topical application to a lithographic image in carrying out the method of the invention and a planographic printing plate produced thereby.
REFERENCES:
patent: 2824083 (1958-02-01), Parry et al.
patent: 2839495 (1958-06-01), Carey
patent: 3222312 (1965-12-01), Wyart
patent: 3393178 (1968-07-01), Lynch
patent: 3462267 (1969-08-01), Giangualano
patent: 3586507 (1971-06-01), Burnett
patent: 3652272 (1972-03-01), Thomas
patent: 3669664 (1972-06-01), Adams et al.
patent: 3779759 (1973-12-01), Lawson et al.
patent: 3790385 (1974-02-01), Steppan et al.
patent: 4074008 (1978-02-01), Green
patent: 4101322 (1978-07-01), Lawson
Chemical Abstracts, vol. 75 (1971), #21609u (Ito. et al.).
Chemical Abstracts, vol. 84 (1976), #181038w (Kurzeja et al.).
In re. Harrington et al., 161 USPQ291 (CCPA-1969), p. 291-294.
Harshaw Bulletin, "Boron Trifluoride Monoethylamine".
Hersch, "Picking the Proper Epoxy Catalyst", Plastics Technology, Dec. 1966.
Harris et al., "Proposed . . . Complexes", J. of App. Polymer Science, vol. 10., p. 523-534 (1966).
Eime Lester O.
Parker Edward H.
Bowers Jr. Charles L.
Western Litho Plate & Supply Co.
LandOfFree
Method for improving the press life of a lithographic image havi does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for improving the press life of a lithographic image havi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for improving the press life of a lithographic image havi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1234551