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1. WO2022002792 - IMPROVED ACTIVATION AGENT FOR MANGANESE PHOSPHATING PROCESSES

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Publication Number WO/2022/002792
Publication Date 06.01.2022
International Application No. PCT/EP2021/067526
International Filing Date 25.06.2021
IPC
C23C 22/18 2006.1
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
22Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
05using aqueous solutions
06using aqueous acidic solutions with pH < 6
07containing phosphates
08Orthophosphates
18containing manganese cations
C23C 22/78 2006.1
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
22Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
78Pretreatment of the material to be coated
Applicants
  • CHEMETALL GMBH [DE]/[DE]
Inventors
  • SCHNEIDER, Ralf
Agents
  • BASF IP ASSOCIATION
Priority Data
20183417.301.07.2020EP
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) IMPROVED ACTIVATION AGENT FOR MANGANESE PHOSPHATING PROCESSES
(FR) AGENT D'ACTIVATION AMÉLIORÉ POUR PROCÉDÉS DE PHOSPHATATION AU MANGANÈSE
Abstract
(EN) The present invention refers to an alkaline aqueous activation agent for manganese phosphating processes, which comprises a) nanoscale manganese phosphate particles in dispersed form, and b) at least one dispersion agent selected from the group consisting of homo- and copolymers containing at least one monomeric unit having at least one carboxylic acid salt group. Moreover, the present invention refers to a method for producing said activation agent, an improved manganese phosphating process making use of the activation agent and an accordingly phosphatized metallic substrate, especially a steel substrate.
(FR) La présente invention concerne un agent d'activation aqueux alcalin pour des procédés de phosphatation au manganèse, qui comprend a) des particules de phosphate de manganèse à l'échelle nanométrique sous forme dispersée, et b) au moins un agent de dispersion choisi dans le groupe constitué par des homopolymères et des copolymères contenant au moins un motif monomère ayant au moins un groupe qui est un sel d'acide carboxylique. De plus, la présente invention concerne un procédé de production dudit agent d'activation, un procédé de phosphatation au manganèse amélioré utilisant l'agent d'activation et un substrat métallique ainsi phosphaté, en particulier un substrat en acier.
Latest bibliographic data on file with the International Bureau
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