Kraton Polymers U.S. LLC

Katon Polymers U.S. LLC

Irwan Hidajat

Carl Lesley Willis

Mike Heniff

Gorgonio G Rodriguez, Jr

Guy Andrew Cordonier

Richard Henning

Selectively amino- or phosphino-functionalized block copolymers, and their preparation, for use as anion exchange membrane materials. The selectively functionalized block copolymers have at least two end blocks A each of which are substantially free of amino- or phosphino-functional groups, and have at least one interior block D which comprises on average at least one amino- or phosphino-functionalized polymer unit of formula (I) 

Anion exchange block copolymers, their manufacture and their use

Sulfonated block copolymers (SBCs) are coagulated from SBC solutions in one or more organic solvents, including reaction mixtures obtained in the sulfonation process, by a process in which the SBC solution is ejected into or onto water provided that no steam is added to the SBC solution prior to ejection and provided that the ejection velocity as well as the water temperature and convection are controlled and balanced. The coagulation process is easy to implement and avoids or at least diminishes problems due to foaming and the formation of micro dispersions of the SBC which cannot be separated successfully or easily by conventional filtration or centrifuging.

Process for coagulating sulfonated block copolymers

Growing community of inventors

Houston, TX, United States of America

Irwan Hidajat