Detergent compositions with oleoyl sarcosinate and amine oxide

Abstract

The present invention provides a detergent composition comprising: (a) at least 0.1% of an oleoyl sarcosinate of the formula: <IMAGE> wherein M is hydrogen or a cationic moiety; and (b) from about 0.1% to about 20% of an amine oxide.

What is claimed is: 
     
       1. A detergent composition comprising (a) at least about 0.1% of an oleoyl sarcosinate of the formula: ##STR9## wherein M is hydrogen or a cationic moiety; and (b) from about 0.1% to about 20 % of an amine oxide.   
     
     
       2. A composition according to claim 1 comprising from about 0.1% to about 10% by weight of an amine oxide having the general formula   R.sup.1 (EO).sub.x (PO).sub.y (BO).sub.z N(O)(CH.sub.2 R').sub.2.qH.sub.2 O     wherein R 1  represents a saturated or unsaturated hydrocarbyl moiety having a chain length of from about 8 to about 24 carbon atoms, x is from 0 to about 10, y is from 0 to about 10, z is from 0 to about 10, R' is H or CH 2  OH, q is from 0 to about 2, EO represents ethyleneoxy, PO represents propyleneoxy, and BO represents butyleneoxy; provided that when x+y+z=0, R 1  has a chain length of from about 10 to about 18 carbon atoms; and further provided that when x+y+z is different from 0, x+y+z has a maximum value of 10; said composition having a pH from about 6 to about 11.   
     
     
       3. A composition according to claim 2 wherein R 1  is a primary alkyl moiety and said amine oxide is selected from the group consisting of (i) amine oxides according to said general formula wherein x+y+z is 0, the R 1  chain length is from about 12 to about 18, R'=H and q is from 0 to about 2;   (ii) amine oxides according to said general formula wherein x+y+z=0, the R 1  chain length is from about 12 to about 18, R'=CH 2  OH and q is 0;   (iii) amine oxides according to said general formula wherein x+y+z=1 to about 10, the R 1  chain length is from 12 to 24, y+z is 0, and x is from about 1 to about 6; and   (iv) mixtures thereof.   
     
     
       4. An automatic dishwashing detergent composition according to claim 3, wherein said amine oxide is selected from the group consisting of: (i) amine oxides according to said general formula wherein x+y+z=0, the R 1  chain length is from 12 to 18, R'=H and q=2; and   (ii) amine oxides according to said general formula wherein x+y+z=0, the R 1  chain length is from 16 to 18, R'=CH 2  OH and q=0 and wherein said composition is substantially phosphate free.   
     
     
       5. A composition according to claim 3 wherein said amine oxide comprises less than about 2% of free amine. 
     
     
       6. A composition according to claim 5 comprising from about 1% to about 10% of said amine oxide and wherein said amine oxide comprises less than about 500 ppb of nitrosamine. 
     
     
       7. A composition according to claim 6 substantially free of boron and comprising from about 1.5% to about 10% of said amine oxide. 
     
     
       8. A detergent composition according to claim 1 wherein M is selected from hydrogen or alkali metal salts. 
     
     
       9. A detergent composition according to claim 8 wherein said alkali metal salts is selected from sodium or potassium. 
     
     
       10. A detergent composition according to claim I further comprising at least about 1% detergent builder and at least about 1% of a detersive surfactant, other than said oleoyl sarcosinate surfactant, selected from anionic and nonionic detersive surfactants. 
     
     
       11. A detergent composition according to claim 10 wherein said builder is selected from the group consisting of zeolite, silicate, carbonate, citrate and mixtures thereof. 
     
     
       12. A detergent composition according to claim 11 comprising from about 1% to about 40% by weight of the composition of said oleoyl sarcosinate surfactant. 
     
     
       13. A detergent composition according to claim 11 comprising at least about 1 ppm of said amine oxide having the general formula:   R.sup.1 (EO).sub.x (PO).sub.y (BO).sub.z N(O)(CH.sub.2 R').sub.2. qH.sub.2 O     wherein R 1  represents a saturated or unsaturated hydrocarbyl moiety having a chain length of from about 12 to 24 carbon atoms, x is from 0 to about 10, y is from 0 to about 10, z is from 0 to about 10, R' is H or CH2OH, q is from 0 to about 2, EO represents ethyleneoxy, PO represents propyleneoxy, and BO represents butyleneoxy; provided that when x+y+z=0, R 1  has a chain length of from about 12 to about 18 carbon atoms; and further provided that when x+y+z is different from 0, x+y+z has a maximum value of 10.   
     
     
       14. A detergent composition according to claim 13 wherein R 1  is a primary alkyl moiety, said amine oxide is selected from the group consisting of (i) amine oxides according to said general formula wherein x+y+z=0, the R 1  chain length is from 12 to 18, R'=H and q is from 0 to 2;   (ii) amine oxides according to said general formula wherein x+y+z=0, the R 1  chain length is from 12 to 18, R'=CH2OH and q=0;   (iii) amine oxides according to said general formula wherein x+y+z=1 to 10, the R 1  chain length is from 12 to 24, y +z=0, and x is from 1 to 6; and   (iv) mixtures of (i)-(iii).   
     
     
       15. A granular detergent composition which comprises: (a) at least about 0.5% of oleoyl sarcosinate of the formula: ##STR10## wherein M is hydrogen or a cationic moiety; (b) at least about 0.1% by weight of an amine oxide selected from the group consisting of tetradecyldimethylamine N-oxide, hexadecyldimethylamine N-oxide, octadecyldimethylamine N-oxide, hydrates thereof, and mixtures thereof; and   (c) from about 1% to about 50% of a pH adjusting component consisting of water-soluble salt or salt/builder mixture selected from sodium carbonate, sodium sesquicarbonate, sodium silicate, sodium citrate, citric acid, sodium bicarbonate, sodium hydroxide, and mixtures thereof; wherein said composition has a pH of from about 8.5 to about 10.5.   
     
     
       16. A composition according to claim 15 comprising from about 10% to about 30% sodium titrate and from about 7% to about 25% sodium carbonate. 
     
     
       17. A method for removing greasy soil from a substrate, said method comprising an aqueous solution containing detersive surfactant and an amine oxide, wherein the improvement comprises including in said detergent composition at least about 0.5% by weight of the composition of a oleoyl sarcosinate surfactant and from about 1% to about 10% amine oxide.