Emulsion ink for stencil printing

Details Emulsion ink for stencil printing Emulsion ink for stencil printing

1997-06-13

2000-01-04

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C09D 500

Patent

active

06011083&

ABSTRACT:
A water-in-oil (W/O) emulsion ink for stencil printing is provided, which is excellent in emulsion stability and drying, high in printing density and low in blurring and seep through. The W/O emulsion ink has an oil phase and a water phase, in which an acid anhydride containing water-soluble polymer is contained together with a water-insoluble colorant in said water phase. The acid anhydride containing water-soluble polymer is preferably an acid anhydride containing olefin copolymer, more specifically, an isobutylene-maleic anhydride copolymer, or an acid anhydride containing vinyl copolymer, more specifically, a styrene-maleic anhydride copolymer. Preferably, the oil phase comprises at least a solvent and an emulsifier, and the water phase comprises a water-in-oil (O/W) emulsion of resin and/or a water-soluble resin.

REFERENCES:
patent: Re28779 (1976-04-01), Katayama
patent: 3687887 (1972-08-01), Zabiak
patent: 5512622 (1996-04-01), Tise et al.
patent: 5575839 (1996-11-01), Okuda
patent: 5609670 (1997-03-01), Okuda et al.
patent: 5620693 (1997-04-01), Piot
patent: 5645609 (1997-07-01), Andrean
patent: 5718748 (1998-02-01), Suzuki

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