The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 19, 2023
Filed:
May. 19, 2020
Applicant:
Ewald Dörken Ag, Herdecke, DE;
Inventors:
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
C23C 22/06 (2006.01); C23C 22/40 (2006.01); C23C 22/53 (2006.01); B05D 7/16 (2006.01); C01B 33/32 (2006.01); C23C 22/42 (2006.01); C23C 22/83 (2006.01); C23C 22/46 (2006.01);
U.S. Cl.
CPC ...
B05D 7/16 (2013.01); C01B 33/325 (2013.01); C23C 22/06 (2013.01); C23C 22/40 (2013.01); C23C 22/42 (2013.01); C23C 22/46 (2013.01); C23C 22/53 (2013.01); C23C 22/83 (2013.01); C23C 2222/20 (2013.01);
Abstract
The invention relates to a method for producing a silane-modified silicate. In order to obtain optimal corrosion protection properties, a silane compound according to the invention is at least partially hydrolyzed and/or condensed in the presence of a silicate compound at a pH value greater than or equal to 8 and then a pH value less than or equal to 7 is set by adding acid. The invention further relates to an aqueous acidic passivation composition for metal substrate coated with the passivation composition.