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, 2022
Filed:
Sep. 09, 2019
Kraton Polymers Llc, Houston, TX (US);
KRATON POLYMERS LLC, Houston, TX (US);
Abstract
A rubber composition is disclosed. The composition comprises a blend based on 100 parts by weight (phr) of diene elastomers: 5 to 95 phr of a first diene elastomer, 5 to 50 phr of a hydrogenated styrenic block copolymer (HSBC), 50 to 200 phr of a filler, up to 25 phr of a plasticizer. The HSBC has a melt flow ratio of 1.0 to 50.0 measured according to ASTM D-1238 at 230° C. and 2.16 kg load, a Shore A hardness of 40 to 80 measured according to ASTM D-2240, a DMA peak tan delta temperature of 0° C. to 40° C. at 1 Hz measured according to ASTM D-4065, and an order-disorder transition temperature of 200° C. to 300° C. The composition does not comprise a resin, a plasticizer, or comprises a resin or a plasticizer in an amount of less than 20 phr.