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:
Jun. 13, 2017
Filed:
Jan. 29, 2013
Rolf-walter Terwonne, Marl, DE;
Witold Friedemann Rex, Sprockhoevel, DE;
Matthias Pascaly, Frankfurt, DE;
Michael Kube, Haltern am See, DE;
Christian Hying, Rhede, DE;
Rolf-Walter Terwonne, Marl, DE;
Witold Friedemann Rex, Sprockhoevel, DE;
Matthias Pascaly, Frankfurt, DE;
Michael Kube, Haltern am See, DE;
Christian Hying, Rhede, DE;
Litarion GmbH, Kamenz, DE;
Abstract
The invention relates to a process for producing a separator comprising the steps of: providing a sheetlike porous substrate, a solvent, ceramic particles and an adhesion promoter; preparing a slip by mixing the solvent, the adhesion promoter and the ceramic particles; coating the substrate with the slip and thermally drying the coated substrate to obtain the separator. The problem addressed is that of specifying a process useful for producing separators having a higher ceramic content. The problem is solved when the solvent used is a mixture of water and at least one organic component; the adhesion promoter used is a mixture of silanes and at least one thermally crosslinkable acrylic polymer; the slip is admixed with a carboxylic acid preparation and also with a defoamer component free from silicone oil.