Water soluble formulation for masking and the like, and method u

Details Water soluble formulation for masking and the like, and method u Water soluble formulation for masking and the like, and method u

1991-09-19

1993-07-06

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

430281, 430283, 522 83, 522151, 522152, 521 92, 521123, 427510, 427508, 427519, 427520, 427 96, 427 97, C08J 908, C08J 328, C08K 326, B05D 306

Patent

active

052253155

ABSTRACT:
A water-soluble coating or other deposit is produced from a formulation that is comprised of a curable liquid substance and a dispersed particulate effervescing agent. The formulation is particularly useful as a solder resist in the manufacture of PCBs, and the preferred composition contains n-vinyl-2-pyrrolidone, N,N-dimethylacrylamide, and polyvinylpyrrolidone.

REFERENCES:
patent: 3888804 (1975-06-01), Swanholm et al.
patent: 4080351 (1978-03-01), Zalzal
patent: 4124389 (1978-11-01), Hoornstra et al.
patent: 4215025 (1980-07-01), Packer et al.
patent: 4514271 (1985-04-01), Williams et al.
patent: 4613628 (1986-09-01), Hoshino et al.
patent: 4689352 (1987-08-01), Titti et al.
patent: 5047440 (1991-09-01), Wilson, Jr.
patent: 5049480 (1991-09-01), Nebe et al.
patent: 5100763 (1992-03-01), Kimoto et al.

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