DESENSITIZING LIQUID FOR OFFSET PRINTING

摘要

PURPOSE: To obtain processing liquid having no problem regarding pollution and excellent in stability and processing performance by adding thereto at least 1 kind or more of phytin acid, specific carboxylic acid containing metallic salt and ammonium salt and amino group, and carboxylic acid ester, respectively. ;CONSTITUTION: Desensitizing liquid for cyanogen free offset printing not containing cyanogen compound is composed by adding thereto at least 1 kind or more of respective components of the following (a) and (b). That is, (a) phytin acid and/or metallic salt and/or ammonium salt of the phytin acid, (b) carboxylic acid containing amino group having inorganic/organic value of 0.1-0.4 (-COOH-) and/or carboxylic acid ester (-COO-) compound shown at least by the general formula. In the formula, R₁ and R₂ represent hydrogen and/or organic residue. Also, a ring constitution may be formed by connecting reciprocally. Thus, processing liquid excellent in stability and desensitizing processing without problem regarding pollution can be obtained.;COPYRIGHT: (C)1993,JPO&Japio