Title: Method for preparing coatings using curable solid styrene-allyl alcohol copolymer based polyene and polythiol compositions

Abstract: A method for preparing coatings, particularly imaged surfaces such as photoresists, printing plates, etc. which includes coating the surface of a substrate with a solid curable composition containing styrene-allyl alcohol copolymer based polyene and polythiol components, curing the composition by exposing selected areas thereof to a free radical generating source, e.g. actinic radiation and removing e.g. by dissolving the uncured, unexposed areas of the curable composition to bare the underlying substrate. The solid polyene component is a reaction product of a copolymer of styrene-allyl alcohol and an unsaturated isocyanate e.g. allyl isocyanate or an unsaturated acid e.g. acrylic acid. The solid polythiol is a reaction product of a copolymer of styrene-allyl alcohol and a mercapto carboxylic acid, e.g. .beta.-mercaptopropionic acid.

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Inventors: Morgan, Charles R. (Silver Spring, MD, US)

Application Number: 425748
Filing Date: 1973-12-18
Publication_date: 1976-02-03
Assignee: W. R. Grace & Co. (New York, NY)
Primary Class(es): 430/284.1 156/230, 427/273, 427/517, 427/520, 428/901, 430/275.1, 430/285.1, 430/287.1, 430/296, 430/315, 430/318, 430/323, 430/324, 430/413, 430/945, 522/2, 522/
Other Classes:
US Patent Ref:

2630430	Mar, 1953	Shokal et al.	260/23.
3340236	Sep, 1967	Greenlee et al.	260/78.
3615450	Oct, 1971	Werber et al.	96/35.
3619393	Nov, 1971	Stahly	204/159.
3645730	Feb, 1972	Frank et al.	96/28.
3719638	Mar, 1973	Huemmer et al.	260/77.

Other Refs:
Primary Examiner: Newsome, John H.
Assistant Examiner:
Attorney: McCandless; Giedre M.