US 9,809,784 B2
Laundry detergents and cleaning compositions comprising sulfonate group-containing polymers
Xiaoli Wang, Beijing (CN); Xianling Zhai, Beijing (CN); Peng Qin, Beijing (CN); Xiaoyan Liu, Beijing (CN); Akiko Hemmi, Osaka (JP); Hirotaka Mizoguchi, Osaka (JP); and Rika Matsumoto, Osaka (JP)
Assigned to The Procter & Gamble Company, Cincinnati, OH (US)
Filed by The Procter & Gamble Company, Cincinnati, OH (US)
Filed on Sep. 23, 2015, as Appl. No. 14/862,175.
Claims priority of application No. CN2014/087376 (WO), filed on Sep. 25, 2014.
Prior Publication US 2016/0090553 A1, Mar. 31, 2016
This patent is subject to a terminal disclaimer.
Int. Cl. C11D 3/37 (2006.01); C11D 1/02 (2006.01); C11D 3/00 (2006.01); C08F 216/16 (2006.01); C08F 220/06 (2006.01)
CPC C11D 3/0036 (2013.01) [C08F 216/16 (2013.01); C08F 220/06 (2013.01); C11D 3/378 (2013.01); C11D 3/3723 (2013.01); C11D 3/3788 (2013.01)] 23 Claims
 
1. A detergent or cleaning composition comprising a sulfonate group-containing copolymer that comprises:
a structural unit (a) derived from a sulfonate group-containing monomer (A);
a structural unit (b) derived from a polyoxyalkylene monomer (B) represented by the following formula (1):

OG Complex Work Unit Drawing
wherein R1 represents a hydrogen atom or a methyl group; R2 represents a direct bond, CH2, or CH2CH2; and X0 represents a structural unit represented by the following formula (2):
—Zn—OR0  (2)
wherein Z may be the same or different and each represents a structural unit derived from a C2-C20 alkylene oxide; R0 represents hydrogen atom or a C1-C30 organic group; and n is an integer of from 1 to 200; and
a structural unit (c) derived from a carboxyl group-containing monomer (C), wherein the sulfonate group-containing copolymer comprises from 20% to 90% by mass in an acid form equivalent of the structural unit (c) in 100% by mass of all monomer structural units constituting the sulfonate group-containing copolymer, and wherein said sulfonate group-containing copolymer is characterized by a parameter of P×Mw×n that ranges from 950,000 to 8,000,000, wherein:
P is defined as the ratio by mass of the structural unit (b) to the structural unit (a) in the sulfonate group-containing copolymer,
Mw is the weight average molecular weight of the sulfonate group-containing copolymer, and
n is the interger in said formula (2),
wherein the composition further comprises an anionic surfactant selected from the group consisting of alkyl benzene sulfonate, alkoxylated alkyl sulfates, alkyl sulfates, and mixtures thereof.