Detergent having improved color retention properties
AssigneeThe Dial Corporation
InventorsTerrell L. Partee, Charles Varker, Elaine T. Morse, Ronald D. Morgan
Life of this patent
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Abstract
A carbonate-based detergent having improved properties is provided. Preferably, a base detergent includes an alkali metal carbonate builder, an anionic surfactant, an inert diluent, a copolymer, and a chlorine scavenger. The base detergent may be mixed with an agglomerate including nonionic surfactants and a builder such as an alkali metal carbonate. The detergent has improved color retention properties. A method of preparing the improved detergent composition is also provided.
Claims4
A laundry detergent composition consisting of:
- about 30-50 wt % of alkali metal carbonate builder;
- about 0.59-1.25 wt % of an alkali metal salt of polyacrylic acid, polymethacrylic acid, a copolymer thereof or combinations thereof having a molecular weight in the range of about 2000-3000;
- about 6-15 wt % of an anionic surfactant;
- about 35-45 wt % of an inert diluent selected from the group consisting of alkali metal chloride, sulfate, nitrate and mixtures thereof;
- and
- about 0.59-1.25 wt % of a chlorine scavenger, whereby said scavenger and said alkali metal salt of polyacrylic acid, polymethacrylic acid, a copolymer thereof or combinations thereof enable improved color retention and softness of items washed with the laundry detergent.
A laundry detergent composition consisting of:
- about 30-50 wt % of alkali metal carbonate builder;
- about 0.59-1.25 wt % of an alkali metal salt of polyacrylic acid, polymethacrylic acid, a copolymer thereof or combinations thereof having a molecular weight in the range of about 2000-3000;
- about 6-15 wt % of an anionic surfactant;
- about 35-45 wt % of an inert diluent selected from the group consisting of alkali metal chloride, sulfate, nitrate and mixtures thereof;
- about 0.18-5.0 wt % of a nonionic surfactant;
- and
- about 0.59-1.25 wt % of chlorine scavenger, whereby said scavenger and said alkali metal salt of polyacrylic acid, polymethacrylic acid, a copolymer thereof or combinations thereof enable improved color retention and softness of items washed with the laundry detergent.
A process of making a laundry detergent composition consisting of the steps of:
- mixing about 30-50 wt % of an alkali metal carbonate and about 0.59-1.25 wt % of an alkali metal salt of polyacrylic acid, polymethacrylic acid, a copolymer thereof or combinations thereof having a molecular weight of about 2000-3000, and about 6-15 wt % of an anionic surfactant producing a slurry;
- spray drying the slurry producing a spray-dried base;
- combining about 0.18 to 5.0 wt % of a nonionic surfactant and about 0.59-1.25 wt % of a chlorine scavenger to effectively scavenge chlorine in a wash liquor producing an admix;
- agglomerating the admix, producing an agglomerate;
- and,
- combining the spray-dried base with the agglomerate.
Dependencies are inferred from the claim text.