Clear, homogeneous and temperature-stable liquid laundry detergent product containing blend of anionic and nonionic surfactants
AssigneeChurch & Dwight Co., Inc.
InventorsJohn Ip, Charles D. Carr, Francis R. Cala, Anthony J. Falotico
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Abstract
This invention provides a liquid laundry detergent product with freeze/thaw and high/low temperature stability. The detergent product is an aqueous medium having a content of sodium carbonate detergent builder, and a surfactant blend of specific amounts of two anionic salt compounds and two nonionic compounds of specific chemical structure.
Claims15
A liquid laundry detergent product which is a clear, homogeneous aqueous solution that is stable under freeze/thaw and high/low temperature conditions and which provides high detergency, said product comprising:
- (A) between about 0.5-12 weight percent of sodium carbonate detergent builder ingredient;
- (B) between about 5-35 weight percent of a detergent active ingredient comprising a partially sulfated and neutralized anionic/nonionic surfactant blend containing:
- (a) a first partially sulfated and neutralized anionic/nonionic surfactant component comprising:
- (i) an anionic salt compound corresponding to the formula:
- R--O--(CH.sub.2 CH.sub.2 O).sub.3 --SO.sub.3 M
- where R is a C.sub.10 -C.sub.16 alkyl group, and M is an alkali metal or ammonium cation;
- and
- (ii) a nonionic compound corresponding to the formula:
- R--O--(CH.sub.2 CH.sub.2 O).sub.3 --H
- where R is a C.sub.10 -C.sub.16 alkyl group;
- (b) a second partially sulfated and neutralized anionic/nonionic surfactant component comprising:
- (i) an anionic salt compound corresponding to the formula:
- R--O--(CH.sub.2 CH.sub.2 O).sub.7 --SO.sub.3 M
- where R is a C.sub.10 -C.sub.16 alkyl group, and M is an alkali metal or ammonium cation;
- and
- (ii) a nonionic compound corresponding to the formula:
- R--O--(CH.sub.2 CH.sub.2 O).sub.7 --H
- where R is a C.sub.10 -C.sub.16 alkyl group;
- and
- (C) water and wherein component (B)(a) comprises from about 30% to about 80% by weight of the (B)(a)(I) anionic salt compound and from about 20% to about 70% by weight of the (B)(a)(ii) nonionic compound.
A detergent active composition which, when combined with water and a sodium carbonate detergent builder ingredient so as to form an aqueous liquid laundry detergent product comprising from about 5 to about 35 weight percent of the detergent active composition and from about 0.5 to 12 weight percent of the sodium carbonate detergent builder ingredient, is capable of providing such detergent product with clarity, homogeneity, stability under freeze/thaw and high/low temperature conditions and high detergency properties, said detergent active composition comprising a partially sulfated and neutralized anionic/nonionic surfactant blend containing:
- (a) a first partially sulfated and neutralized anionic/nonionic surfactant component comprising:
- (i) an anionic salt compound corresponding to the formula:
- R--O--(CH.sub.2 CH.sub.2 O).sub.3 --SO.sub.3 M
- where R is a C.sub.10 -C.sub.16 alkyl group, and M is an alkali metal or ammonium cation;
- and
- (ii) a nonionic compound corresponding to the formula:
- R--O--(CH.sub.2 CH.sub.2 O).sub.3 --H
- where R is a C.sub.10 -C.sub.16 alkyl group;
- and
- (b) a second partially sulfated and neutralized anionic/nonionic surfactant component comprising:
- (i) an anionic salt compound corresponding to the formula:
- R--O--(CH.sub.2 CH.sub.2 O).sub.7 --SO.sub.3 M
- where R is a C.sub.10 -C.sub.16 alkyl group, and M is an alkali metal or ammonium cation;
- (ii) a nonionic compound corresponding to the formula:
- R--O--(CH.sub.2 CH.sub.2 O).sub.7 --H
- where R is a C.sub.10 -C.sub.16 alkyl group and wherein component (a) comprises from about 30% to about 80% by weight of the a(i) anionic salt compound and from about 20% to about 70% by weight of the (a)(ii) nonionic compound.
Dependencies are inferred from the claim text.