Method for removing printing and screen printing ink

Details Method for removing printing and screen printing ink Method for removing printing and screen printing ink

1994-12-15

1996-11-19

McGinty, Douglas J.

Cleaning and liquid contact with solids

Processes

Paints, varnishes, lacquers, or enamels, removal

134 40, 134 42, 510174, 510182, B08B 700, C09D 900, C11D 750

Patent

active

055758592

ABSTRACT:
A liquid for removing printing and screen printing inks consists of an essentially anhydrous mixture of (a) .gamma.-butyrolactone and/or N-methyl-2-pyrrolidone in an amount of up to 25% (v/v) and/or (b) propylene carbonate in an amount of up to 90% (v/v), and (c) up to 90% (v/v) of a high-boiling aromatic compound or a mixture of such compounds having a relative evaporation rate with respect to N-butyl acetate of 0.01 or less. Such a liquid can remove all printing and screen printing inks, and it is considerably less unhealthy than the known cleaning liquids.

REFERENCES:
patent: 3382181 (1968-05-01), Oberdorfer
patent: 3673099 (1972-06-01), Corby et al.
patent: 4120810 (1978-10-01), Palmer
patent: 4508634 (1985-04-01), Elepano et al.
patent: 4664721 (1987-05-01), Valasek
patent: 4680133 (1987-07-01), Ward
patent: 4732695 (1988-03-01), Francisco
patent: 4734215 (1988-03-01), Prigge
patent: 4744834 (1988-05-01), Haq
patent: 4764222 (1988-08-01), Colegrove
patent: 4812255 (1989-03-01), Suwala
patent: 4836950 (1989-06-01), Madsen et al.
patent: 4844832 (1989-07-01), Kobayashi
patent: 5340493 (1994-08-01), Principato
New Propylene Glycol Ethers and Acetates, J. E. Hamlin, BP Chemicals Ltd., Paint & Resin, Oct. 1983, pp. 42 & 45-47.

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