Use of aminocarboxylate functionalized catechols for cleaning applications
View Patent ↗A detergent composition is provided for preventing calcium, magnesium and iron precipitation and for removing soils. The detergent composition includes a caustic, a surfactant and an aminocarboxylate functionalized catechol. The detergent composition may include less than about 10% by weight phosphorous-containing compounds, NTA, and EDTA.
1. A detergent composition for preventing calcium, magnesium and iron precipitation and for removing soils, the detergent composition comprising:
(a) a caustic;
(b) a surfactant; and
(c) an aminocarboxylate functionalized catechol;
(d) wherein the aminocarboxylate functionalized catechol has the formula:
wherein:
R 1 is NR 3 R 4 or R 2 NR 3 R 4 ,
R 2 is selected from the group consisting of a lower alkyl group from about 1 to about 4 carbon atoms,
at least one of R 3 and R 4 is R 5 (COOH) 2 ,
R 5 is selected from the group consisting of lower linear alkyl from about 1 to about 4 carbon atoms,
R 6 , R 7 and R 8 are selected from the group consisting of: hydrogen, SO 3 X, COOX, halogen, alkoxy group, a lower alkyl group from about 1 to about 4 carbon atoms, an amine having the general formula —N(R 9 ) 2 where R 9 is a lower alkyl group from about 1 to about 4 carbon atoms, a hydroxyalkyl group from about 1 to about 4 carbon atoms or any combination thereof, and
X is selected from the group consisting of hydrogen, an alkali metal ion, one half of an alkaline earth metal ion, and an ammonium ion with the general formula:
wherein each of R 10 , R 11 , R 12 and R 13 is a lower alkyl group from about 1 to about 4 carbon atoms, a hydroxyalkyl group from about 1 to about 4 carbon atoms or any combination thereof.
2. The detergent composition of claim 1 , wherein the aminocarboxylate functionalized catechol is at least one of: catechol aminocarboxylate, tiron aminocarboxylate, 4-methycatechol aminocarboxylate and 3-methoxy cathechol aminocarboxylate.
3. The detergent composition of claim 1 , wherein the aminocarboxylate functionalized catechol comprises catechol aminocarboxylate.
4. The detergent composition of claim 1 , wherein the aminocarboxylate functionalized catechol comprises tiron aminocarboxylate.
5. The detergent composition of claim 1 , wherein the caustic is at least one of an alkali metal hydroxide, alkali metal carbonate, and alkali metal silicate.
6. The detergent composition of claim 1 , wherein the aminocarboxylate functionalized catechol constitutes between about 1% and about 40% of the composition by weight.
7. A biodegradable detergent composition for preventing calcium, magnesium and iron precipitation and for removing soils, the detergent composition comprising:
(a) an alkalinity source constituting between about 1% and about 40% by weight of the composition;
(b) a surfactant constituting between about 1% and about 25% by weight of the composition; and
(c) an aminocarboxylate functionalized catechol constituting between about 1% and about 40% by weight of the composition;
(d) wherein the aminocarboxylate functionalized catechol has the formula:
wherein:
R 1 is NR 3 R 4 or R 2 NR 3 R 4 ,
R 2 is selected from the group consisting of a lower alkyl group from about 1 to about 4 carbon atoms,
at least one of R 3 and R 4 is R 5 (COOH) 2 ,
R 5 is selected from the group consisting of lower linear alkyl from about 1 to about 4 carbon atoms,
R 6 , R 7 and R 8 are selected from the group consisting of: hydrogen, SO 3 X, COOX, halogen, alkoxy group, a lower alkyl group from about 1 to about 4 carbon atoms, an amine having the general formula —N(R 9 ) 2 where R 9 is a lower alkyl group from about 1 to about 4 carbon atoms, a hydroxyalkyl group from about 1 to about 4 carbon atoms or any combination thereof, and
X is selected from the group consisting of hydrogen, an alkali metal ion, one half of an alkaline earth metal ion, and an ammonium ion with the general formula:
wherein each of R 10 , R 11 , R 12 and R 13 is a lower alkyl group from about 1 to about 4 carbon atoms, a hydroxyalkyl group from about 1 to about 4 carbon atoms or any combination thereof.
8. The biodegradable cleaning composition of claim 7 , wherein the aminocarboxylate functionalized catechol constitutes between about 2% and about 20% of the cleaning composition by weight.
9. The biodegradable cleaning composition of claim 7 , wherein the alkalinity source is at least one of an alkali metal hydroxide, alkali metal carbonate, and alkali metal silicate.
10. The biodegradable cleaning composition of claim 7 , wherein the aminocarboxylate functionalized catechol is at least one of: catechol aminocarboxylate, tiron aminocarboxylate, 4-methycatechol aminocarboxylate and 3-methoxy cathechol aminocarboxylate.
11. The biodegradable cleaning composition of claim 7 , wherein the aminocarboxylate functionalized catechol is at least one of: catechol aminocarboxylate and tiron aminocarboxylate.
12. The biodegradable cleaning composition of claim 7 , wherein the cleaning composition comprises less than about 10% NTA by weight.
13. The biodegradable cleaning composition of claim 7 , wherein the cleaning composition comprises less than about 10% EDTA by weight.
14. The biodegradable cleaning composition of claim 7 , wherein the cleaning composition comprises less than about 10% phosphorous-containing compounds by weight.
15. A method of preventing precipitation of calcium, magnesium and iron and removing soils, the method comprising:
(a) forming a use solution by mixing an alkalinity source, a surfactant, an aminocarboxylate functionalized catechol and water;
(b) applying the use solution to a surface; and
(c) rinsing the use solution from the surface;
(d) wherein the aminocarboxylate functionalized catechol has the formula:
wherein:
R 1 is NR 3 R 4 or R 2 NR 3 R 4 ,
R 2 is selected from the group consisting of a lower alkyl group from about 1 to about 4 carbon atoms,
at least one of R 3 and R 4 is R 5 (COOH) 2 ,
R 5 is selected from the group consisting of lower linear alkyl from about 1 to about 4 carbon atoms,
R 6 , R 7 and R 8 are selected from the group consisting of: hydrogen, SO 3 X, COOX, halogen, alkoxy group, a lower alkyl group from about 1 to about 4 carbon atoms, an amine having the general formula —N(R 9 ) 2 where R 9 is a lower alkyl group from about 1 to about 4 carbon atoms, a hydroxyalkyl group from about 1 to about 4 carbon atoms or any combination thereof, and
X is selected from the group consisting of hydrogen, an alkali metal ion, one half of an alkaline earth metal ion, and an ammonium ion with the general formula:
wherein each of R 10 , R 11 , R 12 and R 13 is a lower alkyl group from about 1 to about 4 carbon atoms, a hydroxyalkyl group from about 1 to about 4 carbon atoms or any combination thereof.
16. The method of claim 15 , wherein the aminocarboxylate functionalized catechol is at least one of: catechol aminocarboxylate, tiron aminocarboxylate, 4-methycatechol aminocarboxylate and 3-methoxy catechol aminocarboxylate.
17. The method of claim 15 , wherein forming the use solution comprises diluting a concentrate including the alkalinity source, surfactant and aminocarboxylate functionalized catechol at a dilution ratio of between about 250:1 and about 500:1 water to aminocarboxylate functionalized catechol.
18. The method of claim 15 , wherein the use solution has an aminocarboxylate functionalized catechol concentration of at least about 10 parts per million.
19. The method of claim 15 , wherein applying the use solution to a surface comprises applying the use solution to one of a textile and a hard surface.