US 12,351,781 B2
Aqueous liquid laundry formulation
Anne Oberlin Escoffier, Fontaines Saint Martin (FR); Afua Sarpong Karikari, Bristol, PA (US); Robert Butterick, Swedesboro, NJ (US); and Jordan Sarica, Nice (FR)
Assigned to Dow Global Technologies LLC, Midland, MI (US); and Rohm and Haas Company, Collegeville, PA (US)
Appl. No. 17/922,438
Filed by Dow Global Technologies LLC, Midland, MI (US); and Rohm and Haas Company, Collegeville, PA (US)
PCT Filed May 27, 2021, PCT No. PCT/US2021/034383
§ 371(c)(1), (2) Date Oct. 31, 2022,
PCT Pub. No. WO2021/247339, PCT Pub. Date Oct. 9, 2021.
Claims priority of provisional application 63/033,473, filed on Jun. 2, 2020.
Prior Publication US 2023/0265357 A1, Aug. 24, 2023
Int. Cl. C11D 3/37 (2006.01); C11D 1/83 (2006.01); C11D 3/386 (2006.01); C11D 3/43 (2006.01); D06L 1/04 (2006.01); C11D 1/22 (2006.01); C11D 1/74 (2006.01)
CPC C11D 3/3765 (2013.01) [C11D 1/83 (2013.01); C11D 3/38645 (2013.01); C11D 3/43 (2013.01); C11D 1/22 (2013.01); C11D 1/74 (2013.01); C11D 2111/12 (2024.01)] 8 Claims
 
1. A method for renewing a soiled cotton containing fabric comprising:
providing a soiled cotton containing fabric;
providing an aqueous liquid laundry formulation, comprising:
a liquid carrier;
a cellulase; and
a protectant polymer, wherein the protectant polymer comprises:
25 to 65 wt %, based on weight of the protectant polymer, of structural units of formula I

OG Complex Work Unit Chemistry
wherein each R1 is independently selected from a hydrogen and a —CH3 group; and
35 to 75 wt %, based on weight of the protectant polymer, of structural units of formula II

OG Complex Work Unit Chemistry
wherein each R2 is independently selected from a —C2-3 alkyl group and wherein each R3 is independently selected from a hydrogen and a methyl group;
aging the aqueous liquid laundry formulation at greater than or equal to 40° C. for at least seven weeks before contacting the soiled cotton containing fabric;
providing a wash water;
providing a rinse water;
contacting the soiled cotton containing fabric with the aged aqueous liquid laundry formulation and the wash water to provide a renewed cotton containing fabric; and
contacting the renewed cotton containing fabric with the rinse water to rinse off the aqueous liquid laundry formulation.