Redispersible powder compositions for preparing photographic rec

Details Redispersible powder compositions for preparing photographic rec Redispersible powder compositions for preparing photographic rec

1998-04-09

1999-07-13

Nutter, Nathan M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 22, 524 23, 524 24, C08L 5704, D41M 500, G03C 104

Patent

active

059227893

ABSTRACT:
The invention is a ready-to-use, water-redispersible powder composition useful for preparing photographic recording materials or inkjet recording materials, which comprises a mixture containing polymers made from ethylenically unsaturated monomers and gelatin, wherein the polymers are prepared by emulsion polymerization in the presence of at least one emulsifier selected from emulsifiers with ionic and nonionic groups and if exclusively ionic emulsifiers are used, the copolymerization is carried out in the presence of comonomers which contain one or more groups selected from --COOH, --OH, SO.sub.3.sup.-, NCH.sub.2 OH and --C.dbd.O.

REFERENCES:
patent: 2856371 (1958-10-01), Gates
patent: 4244921 (1981-01-01), Tasior et al.
patent: 4409322 (1983-10-01), Ezaki et al.
Fox T. G., Bull.Am. Physics Soc. 1, 3, p. 123 (1956).

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