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:
Nov. 08, 2016
Filed:
Mar. 21, 2013
Applicant:
Rhodia Operations, Paris, FR;
Inventors:
Elise Fournier, Caluire et Cuire, FR;
Sylvaine Neveu, Paris, FR;
Joël Racinoux, Rochetaillee sur Saone, FR;
Assignee:
RHODIA OPERATIONS, Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B 33/12 (2006.01); C01B 33/187 (2006.01); C01B 33/193 (2006.01);
U.S. Cl.
CPC ...
C01B 33/187 (2013.01); C01B 33/193 (2013.01);
Abstract
A process for preparing precipitated silica comprising a reaction of a silicate with an acidifying agent to obtain a suspension of precipitated silica (S1), followed by a step of separation to obtain a cake, a step of spalling said cake to obtain a suspension of precipitated silica (S2) and a step of drying said suspension, wherein the spalling step is carried out at a temperature of between 50 and 120° C.