Patent ID: 6517622
Filing Date: 2003-02-11
Classification: B41N

Abstract:
A correction fluid for the correction of printing plates comprising image areas and non-image areas, the fluid comprising:(a) a material selected from the group consisting of film forming aliphatic esters of phosphoric acid, film forming aromatic esters of phosphoric acid, film forming aromatic and aliphatic esters of phosphoric acid, and mixtures thereof and (b) an organic solvent that does not dissolve the image areas; in which the ester additionally comprises one or more functional groups selected from the group consisting of: epoxy groups; â€”OH; unsubstituted C1-C10 alkoxy groups; C1-C10 alkoxy groups in which the alkyl moiety is substituted by a C6-C20 aryl group; aryloxy groups in which the aryl moiety comprises 6-20 carbon atoms; â€”SO3R; â€”Oâ€”SO3R; halogens; â€”NO2; â€”Oâ€”PO(OR)2 in which the R groups can be the same or different; â€”COOR; â€”CONR2 in which the R groups can be the same or different; and carbonyl groups; in which R is selected from the group consisting of hydrogen, C1-C10 alkyl and C6-C2 aryl.