| 摘要 |
PURPOSE:To obtain a reducing type bleaching agent composition, containing a bleaching improver consisting of thiourea dioxide, alkaline agent and amino acids, etc., and capable of exhibiting excellent bleaching effects on persistent dirt of mud, iron rust, etc., sticking to clothes, etc. CONSTITUTION:The aimed composition obtained by containing (A) thiourea dioxide, (B) an alkaline agent and (C) a bleaching improver selected from the group consisting of (i) amino acids, such as aspartic acid, crysteine, histidine, arginine, glutamic acid, tryptophan, (hydroxy)proline or water-soluble inorganic salts thereof, (ii) amines, such as triethylenetetramine 2,2',2''-triaminotrime thylamine or histamine, and (iii) pyridinecarboxylic acids, such as pyridine-2- carboxylic acid, pyridine-2,6-dicarboxylic acid or water-soluble inorganic salts thereof. |
