US 11,753,526 B2
Synergistically active composition
Josef Berghofer, Tauberbischofsheim (DE); Stefan Mark, Bad Rappenau (DE); and Stefanie Enderle, Grossbottwar (DE)
Assigned to L. BRÜGGEMANN GMBH & CO. KG, Heilbronn (DE)
Appl. No. 16/489,066
Filed by L. Brüggemann GmbH & Co. KG, Heilbronn (DE)
PCT Filed Mar. 5, 2018, PCT No. PCT/EP2018/055321
§ 371(c)(1), (2) Date Aug. 27, 2019,
PCT Pub. No. WO2018/162399, PCT Pub. Date Sep. 13, 2018.
Claims priority of application No. 17159314 (EP), filed on Mar. 6, 2017.
Prior Publication US 2020/0002508 A1, Jan. 2, 2020
Int. Cl. C08K 5/41 (2006.01); C08F 2/22 (2006.01); C08F 4/40 (2006.01); C08K 5/1535 (2006.01); C08L 25/14 (2006.01); C08L 33/08 (2006.01)
CPC C08K 5/41 (2013.01) [C08F 2/22 (2013.01); C08F 4/40 (2013.01); C08K 5/1535 (2013.01); C08L 25/14 (2013.01); C08L 33/08 (2013.01)] 5 Claims
 
1. A composition comprising a weight ratio of component (a) to component (b) in the range of 3:1 to 1:3, wherein
component (a) has the following composition, based on the total weight of component (a):
30 to 60 wt. % of a sodium salt of 2-hydroxy-2-sulfinatoacetic acid;
40 to 70 wt. % of a sulfonic acid of formula (I), a sodium salt thereof, or a mixture thereof;

OG Complex Work Unit Chemistry
wherein
R1 is H,
R2 is —COOH; and
n is 2,
0 to 20 wt. % of metal sulfite; and
component (b) is sodium ascorbate;
wherein the sodium salt of the sulfonic acid of formula (I) is the sodium salt of 2-hydroxy-2-sulfonatoacetic acid; and the sodium salt of 2-hydroxy-2-sulfonatoacetic acid is about 55 wt. % of component (a).