US 11,773,349 B2
Polymer blend to stabilize highly alkaline laundry detergent
Jessica Bull, Saint Paul, MN (US); David Dotzauer, Saint Paul, MN (US); Thomas Duerrschmidt, Monheim am Rhein (DE); Gregory Scott Conrad, Saint Paul, MN (US); Alyssa Ana Hantzsch, Saint Paul, MN (US); and Kelsey West, Saint Paul, MN (US)
Assigned to Ecolab USA Inc., Saint Paul, MN (US)
Filed by ECOLAB USA INC., Saint Paul, MN (US)
Filed on Jan. 3, 2022, as Appl. No. 17/646,831.
Application 17/646,831 is a continuation of application No. 16/749,267, filed on Jan. 22, 2020, granted, now 11,248,192.
Claims priority of provisional application 62/795,138, filed on Jan. 22, 2019.
Prior Publication US 2022/0127549 A1, Apr. 28, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C11D 3/37 (2006.01); C11D 1/66 (2006.01); C11D 17/00 (2006.01)
CPC C11D 3/3765 (2013.01) [C11D 1/662 (2013.01); C11D 3/3792 (2013.01); C11D 17/0008 (2013.01)] 13 Claims
 
1. A liquid detergent composition comprising:
a) between about 25 wt-% and about 40 wt-% alkalinity comprising alkali metal hydroxide;
b) between about 4 wt-% and about 7 wt-% rheology modifiers comprising:
i) a C12-C16 alkyl polyglycoside nonionic surfactant,
ii) at least one alkali-swellable polymer (ASE) according to the following formula:

OG Complex Work Unit Chemistry
wherein R and/or R1 is a hydrogen, CH3 or a C1 to C6 alkyl chain; and wherein the ratio of x:y is from 1:10 to 10:1,
iii) at least one hydrophobically-modified alkali-swellable polymer (HASE) according to the following formula:

OG Complex Work Unit Chemistry
wherein R is a hydrogen or C1-C6 alkyl group;
wherein R1 is a hydrogen or C1-C6 alkyl group;
wherein R2 is a hydrophobic alkyl group in the range from C4-C24;
wherein R3 can be any one of a hydrogen or C1-C6 alkyl group;
wherein the ratio of x:y is from about 1:20 to about 20:1;
wherein the ratio of x:w is from about 1:20 to about 20:1; and
wherein the ratio of x:z is from about 1:1 to about 500:1,
wherein the ASE rheology modifier has a molecular weight between about 20,000 to about 300,000 g/mol, and wherein the HASE rheology modifier has a molecular weight between about 50,000 to about 500,000 g/mol, and wherein the ratio of the HASE rheology modifier to the ASE rheology modifier is from about 1.1:1 to about 4.5:1;
c) between about 15 wt-% to about 35 wt-% ethoxylated alcohol nonionic surfactant(s);
d) between about 15 wt-% to about 40 wt-% water; and
e) optionally at least one of a chelant, sequestrant and/or builder.