US 11,926,543 B2
Use of multiple charged ionic compounds derived from polyamines for waste water clarification
Ashish Dhawan, Saint Paul, MN (US); Carter M. Silvernail, Saint Paul, MN (US); Aarthi Narayanan, St. Paul, MN (US); and Jason Robert Burney, Saint Paul, MN (US)
Assigned to ECOLAB USA INC., Saint Paul, MN (US)
Filed by ECOLAB USA INC., Saint Paul, MN (US)
Filed on Feb. 28, 2022, as Appl. No. 17/652,728.
Application 17/652,728 is a division of application No. 16/554,803, filed on Aug. 29, 2019, granted, now 11,292,734.
Claims priority of provisional application 62/724,360, filed on Aug. 29, 2018.
Prior Publication US 2022/0177334 A1, Jun. 9, 2022
Int. Cl. C02F 1/52 (2023.01); C08G 73/02 (2006.01); C08G 83/00 (2006.01); C08G 85/00 (2006.01)
CPC C02F 1/5272 (2013.01) [C08G 73/02 (2013.01); C08G 83/006 (2013.01); C08G 85/004 (2013.01); C02F 2305/00 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A water clarification composition comprising:
a compound or its salt and one or more water clarification composition agents, wherein the compound is derived from an aza-Michael Addition Reaction between a polyamine and an activated olefin having an ionic group according to the following formula

OG Complex Work Unit Chemistry
wherein:
X is NH or O;
R2 is H, CH3, or an unsubstituted, linear or branched C2-C10 alkyl, alkenyl, or alkynyl group;
R2′ is H, CH3, or an unsubstituted or substituted, linear or branched C1-C10 alkyl, alkenyl, alkynyl group, —COOH, —CH2COOH, Y′, or —(CH2)m—Y′; m is an integer of 2 to 4;
R3 is absent or an unsubstituted, linear or branched C1-C30 alkylene group;
Y is —NR4R5R6(+);
Y′ is —COOH, —SO3H, —PO3H, —OSO3H, —OPO3H, or a salt thereof; and
R4, R5, and R6 are independently a C1-C10 alkyl group;
wherein the compound is a multiple charged cationic compound having 2 or more positive charges or anionic compound having 2 or more negative charges and wherein the water clarification composition reduces turbidity of the water system.