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:
Nov. 15, 2011
Filed:
Apr. 20, 2010
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 US LLC, Houston, TX (US);
Abstract
A sulfonated block copolymer which is solid and non-dispersible in water having at least two polymer end blocks A and at least one polymer interior block B wherein each A block is a polymer containing essentially no sulfonic acid or sulfonate functional groups and each B block is a polymer block containing 10 to 100 mol percent sulfonic acid or sulfonate functional groups based on the number of monomer units of the B block, and wherein said A and B blocks do not contain any significant levels of olefinic unsaturation. Also claimed are processes for making such block copolymers, and the various end uses and applications for such block copolymers.