公开(公告)号：US20220289998A1

公开(公告)日：2022-09-15

申请号：US17633985

申请日：2020-08-12

Applicant: BASF Coatings GmbH

Inventor： Olga Lemmer ,  Stephan Schwarte ,  Michael Bruennemann ,  Christian Kunkelmann ,  Ulrich Horstkoetter ,  Hendrik Czaudema ,  Sandra Kloetter

IPC: C09D17/00 ,  B01F31/60 ,  C09D7/80

Abstract: Described herein is a process for producing an effect pigment paste including at least steps (1) and (2), namely producing a mixture including at least one effect pigment (a) and at least one polymer (b) in a liquid medium (c) (step (1)), and dispersing the mixture obtained after step (1) to obtain the effect pigment paste (step (2)), where step (2) is performed using a shaker and the effect pigment paste obtained after the performance of step (2) has ended is free of grinding media. Also described herein are an effect pigment paste producible by this process, containing an amount of effect pigment of at least 5% by weight, based on the total weight of the effect pigment paste, and a method of using a shaker for dispersing of effect pigments for production of an effect pigment paste.

公开(公告)号：US10040962B2

公开(公告)日：2018-08-07

申请号：US15104828

申请日：2014-11-19

Applicant: BASF COATINGS GMBH

Inventor： Bernhard Steinmetz ,  Nadia Luhmann ,  Peggy Jankowski ,  Michael Matura ,  Hardy Reuter ,  Stephan Schwarte

IPC: C08K3/18 ,  C08K3/22 ,  C09D17/00 ,  C08F283/00 ,  C08F290/14 ,  C09D175/06 ,  C09D7/65 ,  C08G18/08 ,  C08G18/42 ,  C08L75/06

Abstract: The present invention relates to a pigment paste comprising at least one aqueous dispersion comprising at least one copolymer, said copolymer being preparable by (i) initially charging an aqueous dispersion of at least one polyurethane, and then (ii) polymerizing a mixture of olefinically unsaturated monomers in the presence of the polyurethane from (i), in which (a) a water-soluble initiator is used, (b) the olefinically unsaturated monomers are metered in such that a concentration of 6.0% by weight, based on the total amount of olefinically unsaturated monomers used for polymerization, in the reaction solution is not exceeded over the entire reaction time, and (c) the mixture of the olefinically unsaturated monomers comprises at least one polyolefinically unsaturated monomer, and further comprising a pigment, where the weight ratio of pigment to copolymer is at least 1.5. The invention further relates to the use of the copolymer for dispersion of pigments.

公开(公告)号：US11299647B2

公开(公告)日：2022-04-12

申请号：US16496890

申请日：2018-03-22

Applicant: BASF Coatings GmbH

Inventor： Dirk Eierhoff ,  Joerg Schwarz ,  Stephan Schwarte ,  Cathrin Corten

IPC: C09D17/00 ,  C09D5/02 ,  C08F2/00 ,  C08F2/22 ,  C08F220/06 ,  C08F220/18 ,  C08F220/28 ,  C08F212/08 ,  B05D7/14 ,  B05D7/00

Abstract: Described herein are an aqueous pigment paste including at least one color pigment (a) and at least one polymer (b) which is preparable by successive radical emulsion polymerization of three monomer mixtures (A), (B) and (C) of olefinically unsaturated monomers in water, an aqueous basecoat material which is preparable by admixing the pigment paste to at least one aqueous binder-containing component suitable for preparing the basecoat material, a method for producing a multicoat paint system using this basecoat material, and use of the polymer (b) for dispersing color pigments within an aqueous pigment paste.