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US 4,066,390 AGranted
Stable hydrosulfite compositions
OwnerNick J. Christie, Joseph P. Antisavage +1inventors
InventorsNick J. Christie, Joseph P. Antisavage, Eugene E. Brupbacher
Life of this patent
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Abstract
A stable hydrosulfite composition particularly useful for treating a dyed or tinted textile is provided by a homogeneous particulate admixture of a hydrosulfite, a pH builder salt and a pH buffer salt, and either detergent or stabilizer, or both.
Claims20
A stable hydrosulfite composition which comprises a dry particulate admixture of:
- A. 100 parts of a hydrosulfite selected from the group consisting of an alkali metal hydrosulfite, ammonium hydrosulfite, zinc hydrosulfite, and mixtures thereof (based on an assay value of 100% hydrosulfite);
- B. 37.5-214 parts of a pH builder selected from the class consisting of sodium, potassium, or ammonium carbonate, sesquicarbonate, or bicarbonate, and mixtures thereof;
- C. 37.5-286 parts of a pH buffer selected from the class consisting of trisodium phosphate, tripotassium phosphate, triammonium phosphate, disodium phosphate, dipotassium phosphate, diammonium phosphate, sodium tripolyphosphate, potassium tripolyphosphate, ammonium tripolyphosphate, tetrasodium pyrophosphate, tetrapotassium pyrophosphate, tetrammonium pyrophosphate, a sodium or potassium silicate having a molar ratio of silica to alkali metal oxide of about 0.5 to 3.3, borax, and mixtures thereof;
- and
- D. 0.9-14.15 parts of a thermal stabilizer for the hydrosulfite, said thermal stabilizer being a sodium or potassium salt of an alkanoic acid of 1 to 12 carbon atoms or a benzoic acid.
2 more elements
A stable hydrosulfite composition which comprises a dry particulate admixture of:
- A. 100 parts of a hydrosulfite selected from the group consisting of an alkali metal hydrosulfite, ammonium hydrosulfite, zinc hydrosulfite and mixtures thereof (based on an assay value of 100% hydrosulfite);
- B. 37.5-214 parts of a pH builder selected from the class consisting of sodium, potassium, or ammonium carbonate, sesquicarbonate, or bicarbonate, and mixtures thereof;
- C. 37.5-286 parts of a pH buffer selected from the class consisting of trisodium phosphate, tripotassium phosphate, triammonium phosphate, disodium phosphate, dipotassium phosphate, diammonium phosphate, sodium tripolyphosphate, potassium tripolyphosphate, ammonium tripolyphosphate, tetrasodium pyrophosphate, tetrapotassium pyrophosphate, tetrammonium pyrophosphate, a sodium or potassium silicate having a molar ratio of silica to alkali metal oxide of about 0.5 to 3.3, borax, and mixtures thereof;
- and
- D. 3.4-107 parts of an anionic, ampholytic, or nonionic detergent.
2 more elements
A stable hydrosulfite composition which comprises a dry particulate admixture of:
- A. 100 parts of a hydrosulfite selected from the group consisting of an alkali metal hydrosulfite, ammonium hydrosulfite, zinc hydrosulfite, and mixtures thereof (based on an assay value of 100% hydrosulfite);
- B. 37.5-214 parts of a pH builder selected from the class consisting of sodium carbonate, sodium bicarbonate, and mixtures thereof;
- C. 37.5-286 parts of a pH buffer selected from the class consisting of trisodium phosphate, sodium tripolyphosphate, tetrasodium pyrophosphate, sodium metasilicate, borax, and mixtures thereof;
- and
- D. a stabilizer for the hydrosulfite in an amount up to 14.15 parts.
2 more elements
A stable hydrosulfite composition which comprises a dry particulate admixture of:
- A. 100 parts of a hydrosulfite selected from the group consisting of an alkali metal hydrosulfite, ammonium hydrosulfite, zinc hydrosulfite and admixtures thereof (based on an assay value of 100% hydrosulfite);
- B. 37.5-214 parts of a pH builder selected from the class consisting of sodium carbonate, sodium bicarbonate, and mixtures thereof;
- C. 37.5-286 parts of a pH buffer selected from the class consisting of trisodium phosphate, sodium tripolyphosphate, tetrasodium pyrophosphate, sodium metasilicate, borax, and mixtures thereof;
- and
- D. an anionic, ampholytic, or nonionic detergent in an amount up to 107 parts.
2 more elements
Dependencies are inferred from the claim text.