Biodegradable bleach stabilizers for detergents
AssigneeHampshire Chemical Corp.
InventorsJudithAnn R. Hartman, Richard P. Woodbury
Life of this patent
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Abstract
A process of stabilizing bleaching agents in a detergent composition using a nonphosphorus-containing biodegradable stabilizer. The process involves incorporating into a detergent composition containing a bleaching agent, a biodegradable compound of the formula ##STR1## in which m is NR' or sulfur; X is SO.sub.3 H or COOH; Y is hydrogen, SO.sub.3 H or COOH; R and R' are, independently, hydrogen, --CH(Z)CH.sub.2 (Z'), --CH(Z)CH(Z')(Z") or --CH.sub.2 COOH; and Z, Z' and Z" are, independently, hydrogen, OH, SO.sub.3 H or COOH; or a sodium, potassium or ammonium salt thereof, in an amount sufficient to stabilize the bleaching agent. Novel detergent compositions containing the biodegradable bleach stabilizers are also disclosed.
Claims17
A process of stabilizing bleaching agents in a detergent composition for textiles and fabrics, said process comprising incorporating into a detergent composition having a bleaching agent incorporated therein, a biodegradable compound of the formula. ##STR4## in which m is NR' or sulfur;
- X is SO.sub.3 H or COOH;
- Y is hydrogen, SO.sub.3 H or COOH;
- R and R' are, independently, hydrogen, --CH(Z)CH.sub.2 (Z'), --CH(Z)CH(Z')(Z") or --CH.sub.2 COOH;
- and
- Z, Z' and Z" are, independently, hydrogen, OH, SO.sub.3 H or a COOH radical;
- except when m is --NR', X is --COOH, Y is hydrogen and R is --CH.sub.2 COOH, R' is not --CH.sub.2 COOH;
- or a sodium, potassium, ammonium or substituted ammonium salt thereof, in an amount sufficient to stabilize the bleaching agent, wherein the bleaching agent is selected from hydrogen peroxide and derivatives thereof which provide hydrogen peroxide is water;
- peroxyhydrates;
- and inorganic or organic active chlorine compounds.
A detergent composition for textiles and fabrics comprising a bleaching agent and a bleach stabilizing compound of the formula ##STR5## in which m is NR' or sulfur;
- X is a SO.sub.3 H or COOH;
- Y is hydrogen, SO.sub.3 H or COOH;
- R and R' are, independently, hydrogen, --CH(Z)CH.sub.2 (Z'), --CH(Z)CH(Z')(Z") or --CH.sub.2 COOH;
- and
- Z, Z' and Z" are, independently, hydrogen, OH, SO.sub.3 H or COOH radical;
- except when m is --NR', X is --COOH, Y is hydrogen and R is --CH.sub.2 COOH, R' is not --CH.sub.2 COOH;
- or a sodium, potassium, ammonium or substituted ammonium salt thereof, wherein said bleach stabilizing compound is present in the amount of about 0.1 to 10 percent by weight of the total weight of the detergent composition and the bleaching agent is present in the amount of about 5 to 35 percent by weight of the total weight of the detergent composition.
Dependencies are inferred from the claim text.