Process for preparing a ball-point pen ink

Details Process for preparing a ball-point pen ink Process for preparing a ball-point pen ink

1975-09-18

1978-12-19

Lieberman, Allan

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

260 334R, 260 334P, 260 342, C09D 1118

Patent

active

041304357

ABSTRACT:
Process for preparing a stable liquid dye which is useful as a ball-point pen ink, said process comprising admixing and reacting at 20.degree.-80.degree. C. approximately stoichiometric amounts of a water-soluble cationic dye and a water-soluble anionic dye to form a cationic-anionic dye salt, there being present either during or subsequent to the admixing and reacting a two-phase liquid medium comprising an upper aqueous phase and a lower ball-point pen ink solvent phase, in which lower phase the cationic-anionic dye salt dissolves, the ball-point pen ink solvent being substantially insoluble in water, and thereafter separating the aqueous and solvent phases and recovering the solvent phase which provides a stable liquid dye which is useful as a ball-point pen ink.

REFERENCES:
patent: 1674128 (1928-06-01), Rose
patent: 2053616 (1936-09-01), Landolt
patent: 2095077 (1937-10-01), Payne
patent: 2153740 (1939-04-01), Carleton et al.
patent: 2187816 (1940-01-01), Hartmann et al.
patent: 2950285 (1960-08-01), Miller et al.
patent: 2950286 (1960-08-01), Miller et al.
patent: 3236660 (1966-02-01), Drautz et al.
patent: 3597244 (1971-08-01), Fookson et al.
patent: 3705045 (1972-12-01), Nadolski
Johnson, Canadian Paint and Varnish Magazine, Dec., 1948.

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