Polyesters made from bio-renewable raw materials for preventing dye redeposition on fabrics and garments in textile finishing and garment washing processes
A method for preventing a redeposition during washing of dyed fabric or garments made from natural and synthetic fibers is provided. The method may include admixing 0.1% to 1% of at least one anti-redeposition agent to an aqueous bath depending on the total weight of the dyed fabric to be washed. The anti-redeposition agent may include a water-soluble polyester made from bio-renewable raw materials. The water-soluble polyester may include a reaction product of a polyglycerol mixture, a sugar alcohol, a sebacic acid, and one of an unsaturated fatty acid, a saturated fatty acid, a fat or an oil, a polylactic acid, or polyhydroxyalkanoate.
1. A method for preventing a dye redeposition onto a dyed fabric during washing, the method comprising:
determining a weight of the dyed fabric; and
adding an anti-redeposition agent to an aqueous bath, wherein:
a weight of the anti-redeposition agent is 0.1% to 1% of the weight of the dyed fabric; and
the anti-redeposition agent includes a water-soluble polyester made from bio-renewable raw materials, the water-soluble polyester comprising a reaction product of at least of:
a polyglycerol mixture;
a sugar alcohol;
a sebacic acid; and
one of an unsaturated fatty acid, a saturated fatty acid, a fat or an oil, a polylactic acid, or polyhydroxyalkanoate.
2. The method of claim 1 , wherein the dyed fabric is made from one or more of natural fibers and synthetic fibers.
3. The method of claim 1 , wherein the polyglycerol mixture comprises mono-glycerol, di-glycerol, tri-glycerol, and tetra-glycerol.
4. The method of claim 1 , wherein the sugar alcohol includes erythritol, threitol, arabitol, xylitol, ribitol, mannitol, sorbitol, galactitol, fucitol, or a mixture thereof.
5. The method of claim 1 , wherein the water-soluble polyester is a reaction product of:
from 30% to 70% by weight of the polyglycerol mixture;
from 0% to 20% by weight of the sugar alcohol;
from 0% to 30% by weight of the unsaturated fatty acid; and
from 15% to 25% by weight of the sebacic acid.
6. The method of claim 5 wherein the unsaturated fatty acid includes a myristoleic acid, a palmitoleic acid, a sapienic acid, an oleic acid, an elaidic acid, a vaccenic acid, a linoleic acid, a linoelaidic acid, an α-linolenic acid, or a mixture thereof.
7. The method of claim 1 , wherein the saturated fatty acid includes caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, or a mixture thereof.
8. The method of claim 1 , wherein the water-soluble polyester is a reaction product of:
from 10% to 40% by weight of the polyglycerol mixture;
from 10% to 20% by weight of the sugar alcohol;
from 15% to 30% by weight of one of the fat or the oil; and
from 15% to 25% by weight of the sebacic acid.
9. The method of claim 8 , wherein:
the fat includes a tallow derived from poultry or beef; and
the oil includes coconut oil, palm oil, cottonseed oil, soybean oil, olive oil, corn oil, canola oil, sunflower oil, or a mixture thereof.
10. The method of claim 1 , wherein the water-soluble polyester is a reaction product of:
from 10% to 40% by weight of the polyglycerol mixture;
from 10% to 20% by weight of the sugar alcohol;
from 15% to 30% by weight of the polylactic acid; and
from 1% to 15% by weight the sebacic acid.
11. The method of claim 1 , wherein the water-soluble polyester is a reaction product of:
from 10% to 40% by weight of the polyglycerol mixture;
from 10% to 20% by weight of the sugar alcohol;
from 15% to 30% by weight of the polyhydroxyalkanoate; and
from 1% to 15% by weight of the sebacic acid.
12. The method of claim 1 , further comprising adding the water-soluble polyester as a protecting agent for stretch fabrics during industrial washing.
13. The method of claim 1 , further comprising adding the water-soluble polyester as a sequestering agent and a soil-release agent to a laundry detergent during garment washing.
14. An anti-redeposition agent for preventing a dye redeposition onto dyed fabric during washing, the anti-redeposition agent comprising a water-soluble polyester made from bio-renewable raw materials, the water-soluble polyester being a reaction product of:
a polyglycerol mixture comprising of mono-glycerol, di-glycerol, tri-glycerol, and tetra-glycerol;
a sugar alcohol;
a sebacic acid; and
one of an unsaturated fatty acid, a saturated fatty acid, a fat or an oil, a polylactic acid, or polyhydroxyalkanoate.
15. The anti-redeposition agent of claim 14 , wherein the sugar alcohol includes erythritol, threitol, arabitol, xylitol, ribitol, mannitol, sorbitol, galactitol, fucitol, or a mixture thereof.
16. The anti-redeposition agent of claim 14 , wherein the water-soluble polyester is a reaction product of:
from 30% to 70% by weight of the polyglycerol mixture;
from 0% to 20% by weight of the sugar alcohol;
from 0% to 30% by weight of the unsaturated fatty acid, wherein the unsaturated fatty acid includes a myristoleic acid, a palmitoleic acid, a sapienic acid, an oleic acid, an elaidic acid, a vaccenic acid, a linoleic acid, a linoelaidic acid, an α-linolenic acid, or a mixture thereof; and
from 15% to 25% by weight of the sebacic acid.
17. The anti-redeposition agent of claim 14 , wherein the water-soluble polyester is a reaction product of:
from 10% to 40% by weight of the polyglycerol mixture;
from 10% to 20% by weight of the sugar alcohol;
from 15% to 30% by weight of one of the fat or the oil; and
from 15% to 25% by weight of the sebacic acid.
18. The anti-redeposition agent of claim 17 , wherein:
the fat is a tallow derived from poultry or beef; and
the oil includes coconut oil, palm oil, cottonseed oil, soybean oil, olive oil, corn oil, canola oil, sunflower oil, or a mixture thereof.