Thickening water-in-oil dispersions, their preparation process a

Details Thickening water-in-oil dispersions, their preparation process a Thickening water-in-oil dispersions, their preparation process a

1994-09-29

1996-01-16

Michl, Paul R.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524832, 524833, 524842, 524844, 524 31, 524 37, 524 44, C08K 509, C08L 110

Patent

active

054848431

ABSTRACT:
Self-reversible, stable, water-in-oil dispersions, miscible with water, constituted by an oil phase, an aqueous phase and at least two emulsifying agents of which at least one is of water-in-oil type, and at least one is of oil-in-water type, which contain 20 to 50% by weight of a mixture constituted by a hydrosoluble anionic polymer belonging to the group of carboxymethylcelluloses (C), and by a cross-linked, synthetic anionic polymer, insoluble in water but water-swellable (P), based on acrylic acid (AA), partially salified with an alkali metal (M), optionally copolymerized with 2-acrylamido 2-methyl propanesulphonate of the alkali metal M (AMPSM), cross-linked with a diethylenic carboxylic acid and in which the molar ratio of the salified acid functions to the total number of free or salified acid functions is comprised between about 0.6 and about 0.9, the ratio by weight C/P+C being comprised between 0.01 and 0.4, preparation process and use for obtaining a printing paste.

REFERENCES:
patent: 4585815 (1986-04-01), Ono et al.
patent: 4594108 (1986-01-01), Greminger, Jr. et al.
patent: 4631137 (1986-12-01), Dymond
patent: 5258429 (1993-11-01), Kniewske et al.
Abstract No. 30726. "Verdickungsmittel fur Druckpasten zum Bedrucken von farbstoffaffinen Materialen." Disclosed by Ciba-Geigy AG (Basel, Switzerland). Research Disclosure No. 307, Nov. 1989, p. 789.

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