Photocrosslinkable compositions for screen printing stencils

Details Photocrosslinkable compositions for screen printing stencils Photocrosslinkable compositions for screen printing stencils

1980-09-11

1981-08-25

Kimlin, Edward C.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

20415919, 430308, 430325, 430927, 525127, 525454, G03C 168, G03C 500

Patent

active

042860482

ABSTRACT:
Screen printing stencils are prepared by afixing 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.

REFERENCES:
patent: 3035004 (1962-05-01), Glavis
patent: 3459790 (1969-08-01), Smith
patent: 3493500 (1970-02-01), Volk et al.
patent: 3773857 (1973-11-01), Kondo et al.
patent: 3850770 (1973-11-01), Juna et al.
patent: 3865898 (1975-02-01), Tobolsky
patent: 3932401 (1976-01-01), Berg et al.
patent: 3960572 (1976-01-01), Ibata et al.
patent: 4209582 (1980-06-01), Merrill et al.
patent: 4224399 (1980-09-01), Merrill et al.

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