Hydrogen peroxide-containing bleach liquor and bleaching method thereby

A bleaching method for bleaching textile and pulp comprising using the hydrogen peroxide-containing bleach liquor containing one or more compounds selected from organic phosphonic acids and their salts;

• and a water-soluble alkylamide, and performing bleaching with the bleach liquor set at pH 10.0 to 10.7 and heated at 80.degree. to 130.degree. C.

A bleaching method for bleaching textile and pulp comprising using the hydrogen peroxide-containing bleach liquor containing one or more compounds selected from organic phosphonic acids and their salts;

• and a water-soluble alkylamide, wherein the organic phosphonic acid and its salt are one or more compounds of the formula (1) ##STR8## where M's each represent independently of each other, a hydrogen atom, an alkali metal, or an alkali earth metal,
• and/or one or more compounds of the formula (2) ##STR9## where M's each represent, independently of each other, a hydrogen atom, an alkali metal, or an alkali earth metal, and performing bleaching with the bleach liquor set at pH 10.0 to 10.7 and heated at 80.degree. to 130.degree. C.

A bleaching method for bleaching textile and pulp comprising using the hydrogen peroxide-containing bleach liquor containing one or more compounds selected from organic phosphonic acids and their salts;

• and a water-soluble alkylamide, wherein the water-soluble alkylamide is one or more compounds of the formula (3) ##STR10## where R represents a straight-chain or branched C.sub.1 to C.sub.10 alkyl group, and R' and R" each represent, independently or each other, a hydrogen atom, a straight-chain or branched C.sub.1 to C.sub.3 alkyl group, or --CH.sub.2 CH.sub.2 OH, and performing bleaching with the bleach liquor set at pH 10.0 to 10.7 and heated at 80.degree. to 130.degree. C.

A bleaching method for bleaching textile and pulp comprising using the hydrogen peroxide-containing bleach liquor containing one or more compounds selected from organic phosphonic acids and their salts;

• and a water-soluble alkylamide, wherein the organic phosphonic acid and its salt are one or more compounds of the formula (1) ##STR11## where M's each represent independently of each other, a hydrogen atom, an alkali metal, or an alkali earth metal,
• and/or one or more compounds of the formula (2) ##STR12## where M's each represent, independently of each other, a hydrogen atom, an alkali metal, or an alkali earth metal, and wherein the water-soluble alkylamide is one or more compounds of the formula (3) ##STR13## where R represents a straight-chain or branched C.sub.1 to C.sub.10 alkyl group, and R' and R" each represent, independently or each other, a hydrogen atom, a straight-chain or branched C.sub.1 to C.sub.3 alkyl group, or --CH.sub.2 CH.sub.2 OH, and performing bleaching with the bleach liquor set at pH 10.0 to 10.7 and heated at 80.degree. to 130.degree. C.