Process for preparing waterless printing masters

Details Process for preparing waterless printing masters Process for preparing waterless printing masters

1977-03-10

1980-08-19

Lesmes, George F.

Stock material or miscellaneous articles

Composite

Of silicon containing

101457, 428450, 525106, 430302, B41N 106, G03F 702

Patent

active

042185149

ABSTRACT:
Improved waterless lithographic printing masters are provided having minimum background ink reflection density. The master comprises a crosslinked block copolymer containing elastomeric, ink releasing siloxane blocks chemically linked to organic image accepting thermoplastic blocks, said copolymer having a molecular weight for the organic blocks sufficient to provide strength and a background ink reflection density of less than 0.02 and preferably less than 0.01.

REFERENCES:
patent: 3576904 (1971-04-01), Saam et al.
patent: 3665052 (1972-05-01), Saam et al.
patent: 3678126 (1972-07-01), Saam et al.
patent: 3686356 (1972-08-01), Saam
patent: 3857720 (1974-12-01), Fellows
patent: 4009032 (1977-02-01), Shank
patent: 4020761 (1977-05-01), Ogiwara et al.
patent: 4077325 (1978-03-01), Pacansky et al.
patent: 4078927 (1978-03-01), Amidon et al.
Saam et al, Block Copolymers of Polydimethylsiloxane and Polystyrene, in Macromolecules, vol. 3, No. 1, Feb. 1970, p. 1.

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