Automatic dishwashing detergent
A dishwashing detergent comprising a builder; a surfactant; a first polymer comprising monoethylenically unsaturated C3-C6 carboxylic acid units and C1-C12 alkyl (meth)acrylate units; and a dispersant comprising a second polymer comprising monoethylenically unsaturated C3-C6 carboxylic acid units.
1. A phosphate-free dishwashing composition, comprising:
5 to 99 wt % of a builder;
0.1 to 15 wt % of a surfactant of Formula 1, Formula 2, or a combination thereof,
R 1 O—(CH 2 CH 2 O) m —(CH 2 CHR 2 O) n —R 3 (1),
R 3 O—(CH 2 CHR 2 O) n/2 —(CH 2 CH 2 O) m/2 —R 5 O—(CH 2 CH 2 O) m/2 —(CH 2 CHR 2 O) n/2 —R 3 (2),
wherein R 1 is a C 8 -C 24 alkyl group, R 2 is a C 1 -C 5 alkyl group, R 3 is hydrogen, a C 1 -C 12 alkyl group, a C 1 -C 12 arylalkyl group, or a group represented by the Formula 3,
—CH 2 CH(OH)CH 2 -E-R 4 , (3)
wherein E is a C 1 -C 8 alkylene group or an oxygen atom, and R 4 is a C 1 -C 8 alkyl group,
m is a number between 1 and 100, and n is a number between 0 and 50, and R 5 is a C 1 -C 8 alkylene group;
0.05 to 5 wt % of a first polymer having a weight-average molecular weight between 35,000 and 100,000 g/mol and comprising
22 to 80 wt % of monoethylenically unsaturated C 3 -C 6 carboxylic acid units, and
20 to 78 wt % of C 1 -C 12 alkyl (meth)acrylate units; and
0.5 to 10 wt % of a dispersant comprising a second polymer having a weight-average molecular weight between 1,000 and 30,000 g/mol and comprising 50 to 100 wt % of monoethylenically unsaturated C 3 -C 6 carboxylic acid units;
wherein the phosphate-free dishwashing composition comprises less than 0.5 wt % of a phosphate-containing compound, based on a total weight of the dishwashing composition.
2. The composition of claim 1 , wherein the surfactant is a low foam surfactant.
3. The composition of claim 1 , wherein R 1 is a linear C 10 -C 18 alkyl group, R 2 is a methyl or ethyl group, and R 3 is hydrogen.
4. The composition of claim 1 , wherein the monoethylenically unsaturated C 3 -C 6 carboxylic acid units of the first polymer are methacrylic acid units, acrylic acid units, or a combination thereof.
5. The composition of claim 1 , wherein the first polymer comprises
10 to 80 wt % of methacrylic acid units,
0 to 30 wt % of acrylic acid units, and
20 to 70 wt % of C 1 -C 12 alkyl (meth)acrylate units.
6. The composition of claim 1 , wherein the C 1 -C 12 alkyl (meth)acrylate is ethyl acrylate, butyl acrylate, or a combination thereof.
7. The composition of claim 1 , wherein the first polymer comprises
10 to 34 wt % of methacrylic acid units,
10 to 20 wt % of acrylic acid units, and
46 to 70 wt % of C 1 -C 12 alkyl (meth)acrylate units.
8. The composition of claim 1 , wherein the first polymer comprises
55 to 80 wt % of methacrylic acid units,
10 to 35 wt % of ethyl acrylate units, and
10 to 35 wt % of butyl acrylate units.
9. The composition of claim 1 , wherein the composition comprises less than 0.1 wt % of the phosphate-containing compound.
10. The composition of claim 1 , the composition comprises 0 to less than 0.01 wt % of a phosphate-containing compound.
11. The composition of claim 1 , wherein the first polymer is a product of free-radical emulsion polymerization in the presence of a C 2 -C 24 alkanethiol.
12. The composition of claim 1 , wherein the phosphate-containing compound comprises a phosphate and an oligophosphate; and wherein a total content of the phosphate and the oligophosphate compound, if present in the phosphate-free dishwashing composition, is less than 0.05 wt %, based on a total weight of the dishwashing composition.
13. The composition of claim 1 , wherein the composition is sealed in a pouch comprising at least one chamber, in which a content of each chamber is the same or different.
14. A phosphate-free dishwashing composition, comprising:
5 to 99 wt % of a builder;
1 to 8 wt % of a surfactant of Formula 1,
R 1 O—(CH 2 CH 2 O) m —(CH 2 CHR 2 O) n —R 3 (1),
wherein R 1 is a C 8 -C 24 alkyl group, R 2 is a C 1 -C 5 alkyl group, R 3 is hydrogen, m is a number between 10 and 30, and n is a number between 0 and 8;
0.05 to 1 wt % of a first polymer having a weight-average molecular weight between 35,000 and 100,000 g/mol and comprising
22 to 80 wt % of monoethylenically unsaturated C 3 -C 6 carboxylic acid units, and
20 to 78 wt % of C 1 -C 12 alkyl acrylate units; and
1 to 8 wt % of a dispersant comprising a second polymer having a weight-average molecular weight between 1,000 and 30,000 g/mol and comprising 50 to 100 wt % of monoethylenically unsaturated C 3 -C 6 carboxylic acid units;
wherein the phosphate-free dishwashing composition comprises less than 0.5 wt % of a phosphate-containing compound, based on a total weight of the dishwashing composition.
15. The composition of claim 14 , wherein the composition comprises less than 0.1 wt % of the phosphate-containing compound.
16. A method of dishwashing, the method comprising contacting a surface to be washed with the dishwashing composition of claim 1 .
17. A method of manufacturing a dishwashing composition, the method comprising contacting
5 to 99 wt % of a builder;
0.1 to 15 wt % of a surfactant of Formula 1, Formula 2, or a combination thereof,
R 1 O—(CH 2 CH 2 O) m —(CH 2 CHR 2 O) n —R 3 (1),
R 3 O—(CH 2 CHR 2 O) n/2 —(CH 2 CH 2 O) m/2 —R 5 O—(CH 2 CH 2 O) m/2 —(CH 2 CHR 2 O) n/2 —R 3 (2),
wherein R 1 is a C 8 -C 24 alkyl group, R 2 is a C 1 -C 5 alkyl group, R 3 is hydrogen or a C 1 -C 12 alkyl or arylalkyl group or a group represented by the Formula 3,
—CH 2 CH(OH)CH 2 -E-R 4 , (3),
wherein E is a C 1 -C 8 alkylene group or an oxygen atom, and R 4 is a C 1 -C 8 alkyl group,
m is a number between 1 and 100, and n is a number between 0 and 50, and R 5 is a C 1 -C 8 alkylene group;
0.05 to 5 wt % of a first polymer having a weight-average molecular weight between 35,000 and 100,000 g/mol and comprising
22 to 80 wt % of monoethylenically unsaturated C 3 -C 6 carboxylic acid units, and
20 to 78 wt % of C 1 -C 12 alkyl (meth)acrylate units; and
0.5 to 10 wt % of a dispersant comprising a second polymer having a weight-average molecular weight between 1,000 and 30,000 g/mol and comprising 50 to 100 wt % of monoethylenically unsaturated C 3 -C 6 carboxylic acid units;
wherein the dishwashing composition comprises less than 0.5 wt % of a phosphate-containing compound, based on a total weight of the dishwashing composition.