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. 27, 2011
Filed:
Jul. 01, 2011
Carl Lesley Willis, Houston, TX (US);
Dale Lee Handlin, Jr., Houston, TX (US);
Scott Russell Trenor, Houston, TX (US);
Brian Douglas Mather, Blacksburg, VA (US);
Carl Lesley Willis, Houston, TX (US);
Dale Lee Handlin, Jr., Houston, TX (US);
Scott Russell Trenor, Houston, TX (US);
Brian Douglas Mather, Blacksburg, VA (US);
Kraton Polymers U.S. LLC, Houston, TX (US);
Abstract
A method for varying the transport properties of a film cast from a polymer having at least two polymer end blocks A and at least one polymer interior block B wherein each A block is a polymer block resistant to sulfonation and each B block is a polymer block susceptible to sulfonation, and wherein said A and B blocks do not contain any significant levels of olefinic unsaturation. The method includes casting the polymer using a solvent mixture having two or more solvents selected from the group consisting of polar solvents and non-polar solvents.