Printing screen cleaning and reclaiming compositions

Details Printing screen cleaning and reclaiming compositions Printing screen cleaning and reclaiming compositions

C - Chemistry, Metallurgy

09

D

134/3.4

C09D 9/04 (2006.01) B41N 3/06 (2006.01) C11D 3/20 (2006.01) C11D 3/28 (2006.01)

Patent

CA 1198957

PRINTING SCREEN CLEANING AND RECLAIMING COMPOSITIONS Abstract of the Disclosure Ink cleaning compositions are disclosed which degrade or solubilize broad classes of printing ink residues on print- ing screens for quick removal by a pressurized water stream. The compositions axe essentially non-aqueous and contain N-methyl-2-pyrrolidone, an oxygenated solvent, such as butyl cellosolve and cyclohexanone, and a surfactant. Methods of cleaning and reclaiming printing screens which provide syner- gistic activities are also disclosed. The compositions meet health and safety standards due to their biodegradability, lack of flammability and high threshold limit values.

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