Water-soluble resin, process for its production and...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...

Reexamination Certificate

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C523S130000, C524S003000, C524S004000, C524S043000, C524S044000, C524S045000, C524S436000, C524S457000, C524S458000, C524S459000

Reexamination Certificate

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07037956

ABSTRACT:
A water-soluble resin composition comprising a water-soluble resin and a colorant, which copolymer has a weight average molecular weight of at least 8,000 and is prepared by polymerizing an ethylenically unsaturated carboxylic acid monomer and a monomer copolymerizable therewith in the presence of an alcoholic hydroxyl group-containing water-soluble high polymer or a copolymerizable surface active agent to give a copolymer having an acid value in the range of 5 to 120 and then neutralizing the thus-obtained copolymer with a basic, exhibits a reduced viscosity change when it is stored for a long period, and is useful as an aqueous ink capable of giving an image having good dot reproducibility and good abrasion resistance.

REFERENCES:
patent: 5240771 (1993-08-01), Brueckmann et al.
patent: 5705553 (1998-01-01), Kuropka
patent: 6251556 (2001-06-01), Yoshida et al.
patent: 07-070254 (1995-03-01), None
patent: 10-287836 (1998-10-01), None
Translation of JP 10-287836, Oct. 27, 1998.

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