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:
Apr. 28, 2020
Filed:
Mar. 22, 2017
Kraton Polymers U.s. Llc, Houston, TX (US);
John E. Flood, Houston, TX (US);
Carl L. Willis, Houston, TX (US);
Robert C. Bening, Houston, TX (US);
Hendrik De Groot, Mont St. Guibert, BE;
Xavier D. D. J. Muyldermans, Mont St. Guibert, BE;
David T. Williamson, Landenberg, PA (US);
Dale L. Handlin, Jr., Charlotte, NC (US);
Robert Dossett, Cypress, TX (US);
Kraton Polymers U.S. LLC, Houston, TX (US);
Abstract
Selectively hydrogenated block copolymers having semi-crystalline blocks hard blocks and copolymer soft blocks having a combination of excellent physical properties and solvent resistance have been discovered. The block copolymer comprises at least one A block of hydrogenated, polymerized 1,3-butadiene and at least one B block which is a random copolymer or a controlled distribution copolymer of conjugated diene and mono vinyl aromatic monomers in which the conjugated diene monomer units are selectively hydrogenated. Polar functionalized block embodiments of the block copolymers are also disclosed. Compositions comprising the block copolymer and articles made from the block copolymer have also been discovered. A method is disclosed which provides highly isotropic, high strength melt cast films of block copolymers.