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
1998-03-18
1999-07-13
Baxter, Janet
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
430910, 430912, 430916, 430920, 522114, G03C 1725, C08J 328
Patent
active
059225092
ABSTRACT:
A negative-acting photoimageable composition useful as a photoresist comprises an acid-functional binder polymer, a photopolymerizable component, and a photoinitiator chemical system, in which the binder polymer has a multi-modal molecular weight distribution used to promote faster photoresist stripping times and a smaller stripped particle size. The combination of faster stripping times and smaller stripped particle size allows for fully aqueous, environmentally friendly, stripping of the photoresist from overplated circuit boards.
REFERENCES:
patent: 3934057 (1976-01-01), Moreau et al.
patent: 4123272 (1978-10-01), Quinn
patent: 4239849 (1980-12-01), Lipson et al.
patent: 4427760 (1984-01-01), Nagazawa et al.
patent: 4472494 (1984-09-01), Hallman et al.
patent: 4610951 (1986-09-01), Lipson et al.
patent: 4629680 (1986-12-01), Iwasaki et al.
patent: 4689290 (1987-08-01), Worns
patent: 4925768 (1990-05-01), Iwasaki et al.
patent: 5061602 (1991-10-01), Koch et al.
patent: B13953309 (1976-04-01), Gilano et al.
Hanabata, M., et al., Stone Wall Model for Positive Photoresist Development, Osaka Research Laboratory, Japan, Mar., 1998, pp. 1-6.
Hanabata, M., et al., Design Concept for a High-Performance Positive Photoresist, J.Vac. Sci. Technol. B., vol. 7, No. 4, Jul./Aug. 1989, pp. 640-650.
Barr Robert K.
Kautz Randall W.
Ashton Rosemary
Baxter Janet
Benjamin Steven C.
Morton International Inc.
White Gerald K.
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