US 6,232,282 B1Granted

Detergent composition containing mid-chain branched surfactants and an electrolyte for improved performance

AssigneeThe Procter & Gamble Company

InventorsFrank Andrej Kvietok, Gabor Heltovics, Rinko Katsuda, Phillip Kyle Vinson, Robert Allen Godfroid

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Abstract

A detergent composition containing a mixture of linear alkybenzene sulfonate surfactant and mid-chain branched surfactant and an electrolyte is disclosed. The detergent composition includes a mid-chain branched primary alkyl sulfate surfactant and an electrolyte capable of increasing the ionic strength of the compositions resulting in improved performance, especially under low water temperature wash conditions. Typical electrolytes include sodium chloride, magnesium sulfate, calcium carbonate and the like.

Claims14

Dependent claims

A detergent composition comprising:

(A) from about 1% to about 99% of a mixture of linear alkylbenzene sulfonate surfactant and mid-chain branched surfactant of the formula:
Ab-X-B
wherein
(a) Ab is a hydrophobic C9 to C22, total carbons in the moiety, preferably from about C12 to about C18, mid-chain branched alkyl moiety having:
(1) a longest linear carbon chain attached to the -X-B moiety in the range of from 8 to 21 carbon atoms;
(2) one or more C1-C3 alkyl moieties branching from this longest linear carbon chain;
(3) at least one of the branching alkyl moieties is attached directly to a carbon of the longest linear carbon chain at a position within the range of position 2 carbon, counting from carbon #1 which is attached to the -X-B moiety, to position ω-2 carbon, the terminal carbon minus 2 carbons;
and (4) the surfactant composition has an average total number of carbon atoms in the Ab-X moiety in the above formula within the range of greater than 14.5 to about 18;
(b) B is a hydophilic moiety selected from sulfates, sulfonates, amine oxides, polyoxyalkylene, alkoxylated sulfates, polyhydroxy moieties, phosphate esters, glycerol sulfonates, polygluconates, polyphosphate esters, phosphonates, sulfosuccinates, sulfosuccaminates, polyalkoxylated carboxylates, glucamides, taurinates, sarcosinates, glycinates, isethionates, dialkanolamides, monoalkanolamides, monoalkanolamide sulfates, diglycolamides, diglycolamide sulfates, glycerol esters, glycerol ester sulfates, glycerol ethers, glycerol ether sulfates, polyglycerol ethers, polyglycerol ether sulfates, sorbitan esters, polyalkoxylated sorbitan esters, ammonioalkanesulfonates, amidopropyl betaines, alkylated quats, alkyated/polyhydroxyalkylated quats, alkylated quats, alkylated/polyhydroxylated oxypropyl quats, imidazolines, 2-yl-succinates, sulfonated alkyl esters, and sulfonated fatty acids;
and
(c) X is —CH2—;
and
(B) from about 1% to about 60% by weight of an electrolyte selected from the group consisting of magnesium sulfate, sodium chloride, calcium carbonate, potassium chloride, sodium carbonate, sodium sulfate, magnesium chloride and mixtures thereof.

10 more elements

Dependencies are inferred from the claim text.

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Abstract

A detergent composition comprising:

(A) from about 1% to about 99% of a mixture of linear alkylbenzene sulfonate surfactant and mid-chain branched surfactant of the formula:
Ab-X-B
wherein
(a) Ab is a hydrophobic C9 to C22, total carbons in the moiety, preferably from about C12 to about C18, mid-chain branched alkyl moiety having:
(1) a longest linear carbon chain attached to the -X-B moiety in the range of from 8 to 21 carbon atoms;
(2) one or more C1-C3 alkyl moieties branching from this longest linear carbon chain;
(3) at least one of the branching alkyl moieties is attached directly to a carbon of the longest linear carbon chain at a position within the range of position 2 carbon, counting from carbon #1 which is attached to the -X-B moiety, to position ω-2 carbon, the terminal carbon minus 2 carbons;
and (4) the surfactant composition has an average total number of carbon atoms in the Ab-X moiety in the above formula within the range of greater than 14.5 to about 18;
(b) B is a hydophilic moiety selected from sulfates, sulfonates, amine oxides, polyoxyalkylene, alkoxylated sulfates, polyhydroxy moieties, phosphate esters, glycerol sulfonates, polygluconates, polyphosphate esters, phosphonates, sulfosuccinates, sulfosuccaminates, polyalkoxylated carboxylates, glucamides, taurinates, sarcosinates, glycinates, isethionates, dialkanolamides, monoalkanolamides, monoalkanolamide sulfates, diglycolamides, diglycolamide sulfates, glycerol esters, glycerol ester sulfates, glycerol ethers, glycerol ether sulfates, polyglycerol ethers, polyglycerol ether sulfates, sorbitan esters, polyalkoxylated sorbitan esters, ammonioalkanesulfonates, amidopropyl betaines, alkylated quats, alkyated/polyhydroxyalkylated quats, alkylated quats, alkylated/polyhydroxylated oxypropyl quats, imidazolines, 2-yl-succinates, sulfonated alkyl esters, and sulfonated fatty acids;
and
(c) X is —CH2—;
and
(B) from about 1% to about 60% by weight of an electrolyte selected from the group consisting of magnesium sulfate, sodium chloride, calcium carbonate, potassium chloride, sodium carbonate, sodium sulfate, magnesium chloride and mixtures thereof.

10 more elements