Photocrosslinkable compositions for lithographic printing plates

Details Photocrosslinkable compositions for lithographic printing plates Photocrosslinkable compositions for lithographic printing plates

1979-04-25

1980-09-23

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

20415414, 20415919, 430284, 430285, 430286, 430302, 430306, 430325, 430927, 101456, 101457, 101467, G03F 702, G03C 500

Patent

active

042243998

ABSTRACT:
A lithographic printing plate in which the oleophilic imaging areas are formed as a thin cross-linked block copolymer film adhered to the hydrophilic surface of a backing plate. The block copolymer comprises blocks of copolylacrylate and polyurethane wherein the copolyacrylate blocks are a copolymer of a hydroxy-containing acrylate and a second acrylate component comprising one or more esters of acrylic acid or methacrylic acid or mixtures thereof and the polyurethane blocks are formed of polyoxybutylene as the prepolymer component. In forming the printing plate the block copolymer is deposited as a thin film containing an ultraviolet initiator and a cross linking promoter and the cross-linked imaging areas are formed by exposure to ultraviolet radiation.

REFERENCES:
patent: 3035004 (1962-05-01), Glavis
patent: 3459790 (1969-08-01), Smith
patent: 3493500 (1970-02-01), Volk et al.
patent: 3932401 (1976-01-01), Berg et al.
patent: 3960572 (1976-01-01), Ibata et al.

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