Radiation imagery chemistry: process – composition – or product th – Imaged product – Structurally defined
Patent
1979-12-03
1981-03-03
Kimlin, Edward C.
Radiation imagery chemistry: process, composition, or product th
Imaged product
Structurally defined
20415915, 20415916, 20415919, 10112821, 430 17, 430 18, 430284, 430285, 430308, 430320, 430325, 1011283, 427143, G03C 168
Patent
active
042541948
ABSTRACT:
Screen printing stencils are prepared by affixing to a printing screen substrate an indicia-defining, ultraviolet-sensitive film and cross-linking the film by exposure to ultraviolet radiation. The coating compositions used to form the film comprise copolyacrylate/polyurethane block copolymers, in which the copolyacrylate blocks are copolymers of at least one hydroxy-containing acrylate and at least one acrylate or methacrylate which may be partially substituted with bromine, ultraviolet initiators and cross-linking monomers. Screen printing stencils are provided which are compatible with both water-based and oil-based inks. The disclosed screen printing stencils are used in improved screen-printing methods.
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Massucco Arthur A.
Merrill Richard E.
Arthur D. Little Inc.
Kimlin Edward C.
Lepper Bessie A.
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