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:
Dec. 10, 2024
Filed:
Dec. 09, 2019
Applicant:
Rhodia Operations, Aubervilliers, FR;
Inventors:
Jules Valente, Paris, FR;
Brice Schlegel, Princeton, NJ (US);
Lionel Barriquand, Vaux-en-Beaujolais, FR;
Assignee:
RHODIA OPERATIONS, Lyons, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 50/446 (2021.01); C01B 33/193 (2006.01); H01M 50/403 (2021.01); H01M 50/417 (2021.01);
U.S. Cl.
CPC ...
H01M 50/446 (2021.01); C01B 33/193 (2013.01); H01M 50/403 (2021.01); H01M 50/417 (2021.01);
Abstract
A precipitated silica suitable for use in lead-acid battery separators having a good balance between mechanical properties and electrical resistivity. In particular, a precipitated silica characterised by a DOA oil absorption equal to or greater than 200 mL/100 g; a median aggregate size D50equal to or lower than 8.7 μm and equal to or greater than a parameter A whose value, expressed in microns, is calculated from equation (1): A=23.3−0.076×|DOA|, wherein |DOA| represents the numerical value of the DOA oil absorption expressed in mL/100 g.