Process for the production of inks free of foreign salts

Details Process for the production of inks free of foreign salts Process for the production of inks free of foreign salts

1980-07-28

1981-09-22

Hayes, Lorenzo B.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

260208, C09D 1100, C07C10700

Patent

active

042908124

ABSTRACT:
A method for the production of an ink suitable for use in ink-jet printing, free from foreign salts, made from technical dyes. A highly water-soluble dye is dissolved in water and precipitated with a precipitant amine. The precipitate is separated from the solution and distilled with water and a water-soluble amine of low volatility to convert the dye back to a soluble form.

REFERENCES:
patent: 1787233 (1930-12-01), Bivins
patent: 3705043 (1972-12-01), Zabiak
patent: 3846141 (1974-11-01), Ostergren
patent: 3994872 (1976-11-01), Kuster
patent: 4101329 (1978-07-01), Loock
patent: 4159203 (1979-06-01), Loock

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