Kao Soap Company, Ltd.

Kouichi Yagi

Yunosuke Nakagawa

Takashi Fujino

Makoto Yamanaka

A bleaching composition comprising (A) sodium percarbonate and/or tetrasodium ethane-1,1,2,2-tetracarboxylate/hydrogen peroxide adduct, and (B) dicarboxyalkyleneimino, monocarboxyalkyleneiminobis(alkylene phosphonic acid), hydroxyethylimino diacetate and/or hydroxyethylethylenediamine triacetate compounds. The composition minimizes color change or fading of colored fabrics caused by bleaching.

Bleaching composition

A bleaching composition which does not cause color change or fading of fabrics, which composition contains 50 to 98 weight % of a peroxide which releases oxygen in an aqueous solution, 1 to 49 weight % of nitrilotriacetic acid or salt thereof and 1 to 49 weight % of a water softener as critical components.

Bleaching composition causing no color change or fading of colored and

A bleaching composition comprising 50 to 99.9 wt.% of an inorganic peroxide and 0.01 to 10 wt.% of a compound having the formula: ##STR1## wherein R.sub.1 is hydrogen or alkyl having 1 to 3 carbon atoms, ##STR2## is a radical of a 5 member or 6 member heterocyclic ring system containing only nitrogen and carbon, or nitrogen, oxygen and carbon, atoms in the ring, which can be fused to a benzene ring or another heterocyclic ring to give a polycyclic radical, R.sub.2 is hydrogen or substituted or unsubstituted alkyl having 1 to 10 carbon atoms, substituted or unsubstituted phenyl, pyridyl or pyrrolidone group, R.sub.3 is hydrogen, substituted or unsubstituted alkyl, phenyl, alkoxy, phenoxy, amino, acyloxy, carbamoyl or acyl group or halogen, or R.sub.3 may form together with R.sub.4 a benzo radical, and R.sub.4 is hydrogen or a monovalent group --R.sub.5 Y in which R.sub.5 is alkylene or alkylidene having 1 to 6 carbon atoms or a phenylene group and Y is a group corresponding to the residue of the above general formula from which R.sub.4 has been removed, or R.sub.4 may form a benzo group together with R.sub.3.

Safe bleaching compositions for colored and patterned fabrics

A stable bleaching detergent composition comprising an inorganic peroxide and a compound having the formula: ##STR1## wherein R.sub.1 is hydrogen or alkyl having 1 to 3 carbon atoms, ##STR2## is a radical of an unsaturated 5 member or 6 member heterocyclic ring system containing only nitrogen and carbon atoms in the ring, which can be fused to a benzene ring or another heterocyclic ring to give a polycyclic radical, R.sub.2 is hydrogen or substituted or unsubstituted alkyl having 1 to 10 carbon atoms, substituted or unsubstituted phenyl, pyridyl or pyrrolidone group, R.sub.3 is hydrogen, substituted or unsubstituted alkyl, phenyl, alkoxy, phenoxy, amino, acyloxy, carbamoyl or acyl group or halogen, or R.sub.3 may form together with R.sub.4 a benzo radical, and R.sub.4 is hydrogen or a monovalent group --R.sub.5 Y in which R.sub.5 is alkylene or alkylidene having 1 to 6 carbon atoms or a phenylene group and Y is a group corresponding to the residue of the above general formula from which R.sub.4 has been removed, or R.sub.4 may form a benzo group together with R.sub.3.

Stable bleaching detergent composition

A process for the preparation of powdery detergent compositions having an improved spray-drying property, in which there is incorporated in a detergent slurry containing a surface active agent having the formulas (I) or (II):

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Tokyo, Japan

Kouichi Yagi