Boosting cleaning power of detergents by means of a polymer
View Patent ↗Textiles are washed by a method comprising contacting the textile with a cleaning composition comprising a copolymer comprising styrene, methacrylic acid, hydroxyethyl methacrylate, and methyl acrylate.
1. A method of washing a textile comprising:
adding a copolymer consisting of 1 to 30 mol % styrene, 20 to 60 mol % methacrylic acid, 1 to 20 mol % hydroxyethyl methacrylate, and 10 to 40 mol % methyl methacrylate to a wash bath, and
contacting the textile with the copolymer.
2. The method of claim 1 wherein the textile is a cotton textile.
3. The method of claim 1 wherein the polymer is a block copolymer.
4. The method of claim 1 wherein the polymer is added to a cleaning composition comprising a soil-release-enabling polyester of a dicarboxylic acid and diol, a polymeric diol or a mixture thereof prior to adding the polymer to the washing bath.
5. The method of claim 1 wherein the average molar weight of the polymer is less than 10,000 Dalton.
6. The method of claim 5 wherein the average molar weight of the polymer is from 3,000 Dalton to 8,000 Dalton.
7. A washing agent containing a soil-release-enabling copolymer consisting of 1 to 30 mol % styrene, 20 to 60 mol % methacrylic acid, 1 to 20 mol % hydroxyethyl methacrylate, and 10 to 40 mol % methyl methacrylate and having a molar weight of from 3,000 D to 8,000 D.
8. The washing agent of claim 7 wherein the amount of the soil-release-enabling polymer is from 0.1 wt % to 2 wt %, based on total weight of the cleaning composition.
9. The washing agent of claim 8 wherein the amount of the soil-release-enabling polymer is from 0.4 wt % to 1 wt %, based on total weight of the cleaning composition.
10. The method of claim 1 wherein the polymer is added to a washing agent prior to adding the polymer to the wash bath.
11. The method of claim 1 further comprising adding a washing agent to the wash bath.