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
1992-11-30
1995-03-07
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
430157, 430176, 430302, 430330, 522 30, 522127, G03F 7021, G03C 177
Patent
active
053957342
ABSTRACT:
Acid-sensitive polymers and imageable articles employing them are disclosed. In particular, photosensitive compositions are disclosed comprising: (a) a photoinitiator which generates an acid upon exposure to radiation; and (b) a polymer having acid labile groups pendant from the polymer backbone, said acid labile pendant groups comprising at least one each of A and B wherein A has the formula --T--(C.dbd.O)OCR.sup.1 R.sup.2 OR.sup.3, and B has the formula --T--(C.dbd.O)OR.sup.4 Si(R.sup.5).sub.3, wherein R.sup.1 and R.sup.2 each represent H or an alkyl group with the proviso that at least one of R.sup.1 and R.sup.2 must be hydrogen; R.sup.3 represents an alkyl group; or any two of R.sup.1, R.sup.2, and R.sup.3 may together form a ring group having from 3 to 36 carbon atoms; R.sup.5 represents an alkyl group, aryl group, an alkoxy group, an aryloxy group, an acyloxy group, or a trialkylsiloxy group; and R.sup.4 and T represents a divalent linking group wherein T is bonded to the polymer backbone and R.sup.4 is not bonded to the polymer backbone, the divalent linking group containing a total of from 0 (a covalent bond) or 1 to 18 carbon atoms where up to one of each three carbon atoms may be replaced by oxygen, nitrogen, or sulfur atoms or combinations thereof in the polymer backbone.
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patent: 5024916 (1991-06-01), Steinmann
patent: 5077174 (1991-12-01), Bauer et al.
patent: 5102771 (1992-04-01), Vogel et al.
patent: 5210003 (1993-05-01), Schadeli
Stulc Leonard J.
Vogel Dennis E.
Bowers Jr. Charles L.
Chu John S.
Griswold Gary L.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
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