	US 12,234,381 B2
	Mixing system for producing aqueous coating agents with a low VOC
Alexandra Steffens, Münster (DE); Bernhard Lettmann, Münster (DE); Josef Rademacher, Münster (DE); and Peter Hoffmann, Münster (DE)
Assigned to BASF COATINGS GMBH, Muenster (DE)
Appl. No. 17/630,588
Filed by BASF Coatings GmbH, Münster (DE)
PCT Filed Jul. 15, 2020, PCT No. PCT/EP2020/070019 § 371(c)(1), (2) Date Jan. 27, 2022, PCT Pub. No. WO2021/018594, PCT Pub. Date Feb. 4, 2021.
Claims priority of application No. 19189323 (EP), filed on Jul. 31, 2019.
Prior Publication US 2022/0259446 A1, Aug. 18, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C09D 7/80 (2018.01); C09D 5/02 (2006.01); C09D 7/40 (2018.01); C09D 7/43 (2018.01); C09D 17/00 (2006.01); C09D 175/06 (2006.01)

CPC C09D 7/80 (2018.01) [C09D 5/022 (2013.01); C09D 7/43 (2018.01); C09D 7/68 (2018.01); C09D 17/001 (2013.01); C09D 175/06 (2013.01)]

20 Claims

1. A mixer system for producing aqueous coating materials, comprising

(a) at least one aqueous pigment paste A comprising at least one color pigment (a-1) and also at least one anionically stabilized binder (a-2) and/or at least one nonionically stabilized binder (a-3), and

(b) at least one pigment-free component B comprising at least one acrylate-based microgel dispersion (b-1), the acrylate-based microgel having a glass transition temperature T_gof 50 to 60° C.,

wherein the aqueous pigment paste A and the pigment-free component B each have a VOC value of less than or equal to 250 g/L.