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. 12, 2024
Filed:
Aug. 18, 2021
Kraton Polymers Llc, Houston, TX (US);
Xavier D. D. J. Muyldermans, Louvain-la-Neuve, BE;
Arwin W. van der Waal, Amsterdam, NL;
Hendrik de Groot, Louvain-la-Neuve, BE;
KRATON CORPORATION, Houston, TX (US);
Abstract
A composition comprising selectively hydrogenated block copolymers (a) and (b having peak molecular weights of 150-1,000 kg/mol, 6-60 kg/mol, respectively, is disclosed. Component (a) comprises one or more structures A-B-A, (A-B-A)nX, A-(B-A)n, and (A-B)nX. Component (b) comprises one or more structures C-D, D-C-D, and (D-C)nX. The value of 'n' is 1-30, and “X” is a residue of a coupling agent. Before hydrogenation, blocks A and C, are vinyl aromatic polymer blocks; and blocks B and D are polymer blocks comprising 60-100 mol % of one or more conjugated dienes and 0-40 mol % of a vinyl aromatic monomer. The HSBC compositions and TPE blends exhibits good elasticity, good processability, low extractables, and low compression set.