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. 22, 2016
Filed:
Oct. 10, 2012
Compagnie Generale Des Etablissements Michelin, Clermont Ferrand, FR;
Michelin Recherche ET Technique, S.a., Granges-Paccot, CH;
Benoit De Gaudemaris, Clermont-Ferrand, FR;
Geraldine Laffargue, Clermont-Ferrand, FR;
Julien Berriot, Clermont Ferrand, FR;
COMPAGNIE GENERALE DES ETABLISSEMENTS, Clermont-Ferrand, FR;
MICHELIN RECHERCHE ET TECHNIQUE S.A., Granges-Paccot, CH;
Abstract
Preparation of a masterbatch of diene elastomer and silica including preparing at least one silica dispersion in water; bringing into contact and mixing an elastomer latex and the aqueous silica dispersion in the presence of a calcium salt in order to obtain a coagulum; and recovering the coagulum and drying the recovered coagulum in order to obtain the masterbatch. The molar content of calcium cations, defined as the number of moles of calcium cations of the calcium salt per BET unit area of the silica, is between 1.19*10and 2.81*10mol/m.