Water base pigment ink composition for writing

Details Water base pigment ink composition for writing Water base pigment ink composition for writing

1982-10-21

1984-07-17

Schofer, Joseph L.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524556, 260DIG38, 106 23, C08K 320, C08K 521

Patent

active

044607270

ABSTRACT:
A water base pigment ink composition for writing comprises a pigment, a dispersing agent, an anti-drying agent and an aqueous medium, in which said dispersing agent is a water soluble amine salt or ammonium salt of a copolymer comprises at least 50 molar % of a hydrophobic addition-polymerizable monomer and less than 50 molar % of acrylic acid or methacrylic acid, and said anti-drying agent is urea, thiourea or a derivative thereof.

REFERENCES:
patent: 4101480 (1978-07-01), Ruf

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