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United States Patent | 4,193,799 |
Crivello | March 18, 1980 |
Curable compositions are provided based on the use of an aromatic onium salt with a blend of epoxy resin and polyvinyl acetal resin. The curable compositions in the form of a cast film can be used directly as a dry film photoresist by being applied to a substrte, such as a copper clad laminate, and cured with ultraviolet light.
Inventors: | Crivello; James V. (Clifton Park, NY) |
Assignee: |
General Electric Company
(Schenectady,
NY)
|
Appl. No.: | 05/907,791 |
Filed: | May 19, 1978 |
Application Number | Filing Date | Patent Number | Issue Date | ||
732421 | Oct., 1976 | ||||
703860 | Jul., 1976 | ||||
Current U.S. Class: | 430/319 ; 430/281.1; 430/286.1; 430/313; 522/111; 522/153; 522/25; 522/31; 525/58 |
Current International Class: | G03F 7/038 (20060101); G03F 7/029 (20060101); C08L 29/14 (20060101); C08L 29/00 (20060101); C08L 63/00 (20060101); G03C 005/00 (); G03C 001/68 () |
Field of Search: | 96/115R,115P,35.1,36.2,86P 204/159.18,159.23,159.24 260/2EP,2EC,47EC,47EN |
3100702 | August 1963 | Rauner et al. |
3552963 | January 1971 | Notley et al. |
3785821 | January 1974 | Notley |
3821167 | June 1974 | Asano |
4026205 | May 1977 | Crivello |
4090936 | May 1978 | Barton |