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. 14, 2021
Filed:
Dec. 20, 2017
Compagnie Generale Des Etablissements Michelin, Clermont-Ferrand, FR;
Marie-Hélène Dessendier, Clermont-Ferrand, FR;
Charlotte Dire, Clermont-Ferrand, FR;
Claire Fauvarque-Nuytten, Clermont-Ferrand, FR;
COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Clermont-Ferrand, FR;
Abstract
A process for the continuous synthesis of a modified diene elastomer comprising at least one silicon atom directly connected to the elastomer chain is provided. The process comprises polymerization by n reactors rto rn, considered to be continuous stirred-tank reactors equipped with an internal stirring system and arranged in series, n varying from 2 to 15. The reactor ris fed by an input solution comprising a solvent, one or more monomer(s), an anionic polymerization initiator chosen from lithium amides and a polar agent. The temperature of each reactor varies from 20° C. to 150° C. and is greater than or equal to the temperature of the reactor which immediately precedes it. The living diene elastomer obtained exhibits a polydispersity index varying from 1.1 to 1.7. The process further comprises