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:
Mar. 15, 2022
Filed:
Jun. 10, 2019
Applicants:
Evonik Operations Gmbh, Essen, DE;
Evonik Corporation, Parsippany, NJ (US);
Inventors:
Zhifeng Li, Acton, MA (US);
Helmut Mack, Traunstein, DE;
Assignees:
Evonik Operations GmbH, Essen, DE;
Evonik Corporation, Parsippany, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B 33/149 (2006.01); C09K 3/14 (2006.01);
U.S. Cl.
CPC ...
C01B 33/149 (2013.01); C09K 3/1409 (2013.01); C09K 3/1436 (2013.01);
Abstract
A modified colloidal silica is produced by mixing an effective amount of an alkyl silicate to form a colloidal silica, followed by treating the colloidal silica with an effective amount of a polyethersilane to form a modified colloidal silica.