| 摘要 |
PROBLEM TO BE SOLVED: To obtain a detergent composition which provides high cleaning effects in cleaning particulate dirt such as mud by compounding specified amounts of a bleaching agent, zeolite and a silicate with a carboxylic acid polymer so as to give a composition having a specified pH. SOLUTION: This detergent composition is prepared by compounding 1-50 wt.% bleaching agent, 0.1-20 wt.% zeolite, 0.1-20 wt.% silicate and a carboxylic acid polymer having a wt. average mol.wt. of 2,000-100,000. The composition is prepared so that, when 10 g of it is dissolved in 1 l of ion-exchanged water at 20 deg.C, the resultant solution has a pH of 7.5-9.5 and the amounts of an aqueous N/10 H2SO4 solution necessary for changing the pH to 7.0 and 10 are 0.1-1.5 l and 0.1-1.0 l, respectively, In order to satisfy this requirement, a compound having a buffer action is compounded. A polyacrylic acid salt, an acrylic acidmaleic anhydride copolymer and a glyoxylic acid polymer are each especially preferable as the carboxylic acid polymer. This polymer is compounded usually in an amount of 0.1-20 wt.%.
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