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:
Jul. 16, 2024
Filed:
Dec. 03, 2019
Cariflex Pte. Ltd., Singapore, SG;
Adrie Van Der Huizen, Amsterdam, NL;
Henk Van De Weg, Amsterdam, NL;
Wouter De Jong, Amsterdam, NL;
Maarten Tromp, Amsterdam, NL;
CARIFLEX PTE. LTD., Singapore, SG;
Abstract
The disclosure relates to rubber latex formed from any of: branched block copolymers derived from alkenyl aromatic hydrocarbon—1,3-diene monomer system, and branched polyisoprene homopolymers derived from isoprene. The polymers in embodiments are obtained by polymerization in the presence of an anionic initiator; at a temperature from 0° C. to 100° C.; followed by coupling with a multifunctional coupling agent of formula (RO)Si—Y—Si(OR), wherein Rand Rare independently C-Calkyl groups; and Y is a C-Calkylene group. The polymers are obtained as rubber cements having high solids content and low zero shear viscosities. The rubber cements are valuable for making latices for further applications.