| 摘要 |
This invention relates to a correcting agent for photomechanically produced printing forms consisting essentially of 10 to 30 per cent by weight of 2-methoxyethanol or 2-ethoxyethanol, or a mixture of both; 10 to 30 per cent by weight of methyl isobutyl ketone, ethyl isobutyl ketone, or 2,4-dimethyl pentanone(-3), or a mixture of two or all of these ketones; 5 to 20 per cent by weight of dimethyl sulfoxide; 10 to 20 per cent by weight of benzyl alcohol; 10 to 20 percent by weight of phosphoric acid (85%, rest water); 0 to 7 per cent by weight of water (in addition to the water contained in the 85% phosphoric acid solution); 0 to 10 per cent by weight of glycerol; 0 to 20 per cent by weight of finely divided silica, and 0 to 0.1 per cent by weight of a dyestuff. |
