	US 12,110,475 B2
	Process for manufacturing alkoxylated polyethyleneimines
Holger Tuerk, Ludwigshafen (DE); Thomas Wesley Holcombe, Shanghai (CN); Andrew David Green, London (GB); Alyn James Parry, London (GB); Julie Bennett, London (GB); and Robert John Carswell, London (GB)
Assigned to BASF SE, Ludwigshafen am Rhein (DE)
Appl. No. 17/267,067
Filed by BASF SE, Ludwigshafen am Rhein (DE)
PCT Filed Jul. 30, 2019, PCT No. PCT/EP2019/070480 § 371(c)(1), (2) Date Feb. 9, 2021, PCT Pub. No. WO2020/030469, PCT Pub. Date Feb. 13, 2020.
Claims priority of application No. 18188508 (EP), filed on Aug. 10, 2018.
Prior Publication US 2021/0309934 A1, Oct. 7, 2021
Int. Cl. C11D 3/37 (2006.01); C08G 73/02 (2006.01); C11D 1/00 (2006.01)

CPC C11D 1/008 (2013.01) [C08G 73/0206 (2013.01); C11D 2111/12 (2024.01)]

18 Claims

1. A process for manufacturing ethoxylated polyethyleneimines by reacting at least one polyethyleneimine (PEI) with at least one ethylene oxide EO, wherein, in a first step (1), the polyethyleneimine (PEI) is reacted with ethylene oxide EO in a quantity of less than one molar equivalent per PEI, and subsequently, in a second step (2), the product of step (1) is reacted with a further quantity of ethylene oxide EO, in the presence of a basic catalyst C, and wherein the ethylene oxide EO is added in step (1) in an amount of 0.01 to 0.85 ethylene oxide units per NH-group of the polyethyleneimine (PEI), and wherein the polyethyleneimine (PEI) has a weight average molecular weight Mw prior to ethoxylation in the range of 1000 to 5000.