Kraton Polymers U.S. LLC

Adrie A Van Der Huizen

Carl Lesley Willis

Dale Lee Handlin, Jr

Robert Charles Bening

Kimberly Ann Johnson

Harvey E Atwood

Arwin W Van Der Waal

Marc S Sonderman

Mark Hageman

David Brooks

Wouter De Jong

Xavier Muyldermans

Marianne Stol

Stephen W Bourne

Alexandre Rodrigues Da Silva

Anton Nicolai

Xavier D Muyldermans

Disclosed herein is a functionalized block copolymer comprising (a) at least one end block D comprising on average at least one amino- or phosphino-functionalized polymer unit of formula (I) 

Block copolymers having amine or phosphine functionalized end blocks

A coupling agent having at least two alkenylbenzene groups each covalently bonded with a nitrogen of an amine compound. The coupling agent can have the structure I: 

Amine-containing polyalkenyl coupling agents and polymers prepared therefrom

A functionalized block copolymer polymerized using vinylbenzylamino derivative monomers for use in such applications as anionic exchange membranes.

Block copolymers, their manufacture and their use

Accordingly, the invention provides a process for the preparation of an artificial latex, comprising the steps: (a) emulsification of a cement comprising a rubber dissolved in a suitable organic solvent, together with an aqueous surfactant solution, thus forming an oil-in-water emulsion; (b) step-wise reduction of the solvent content of the oil-in-water emulsion in two or more stages resulting in an artificial latex. In addition, the invention provides a continuous stirred vessel for removing an organic solvent from an oil-in-water emulsion comprising rubber dissolved in an organic solvent.

Process for the preparation of an artificial latex

A process of producing an artificial latex, comprising the steps:

Lithium-terminated polymers of one or more conjugated dienes and of one or more mono alkenyl arenes are coupled by reaction with an alkoxy silane coupling agent having the formula R&#x2014;Si&#x2014;(OR'), where x is 0 or 1, x+y=4, R and R&#x2032; are the same or different, R is selected from aryl hydrocarbon radicals, linear alkyl hydrocarbon radicals and branched alkyl hydrocarbon radicals, and R&#x2032; is selected from linear and branched alkyl hydrocarbon radicals, such that the resulting polymer composition contains less than about ten weight percent of uncoupled polymer diblock. The polymer compositions are subsequently selectively hydrogenated, and are useful in a variety of compounds and end use applications.

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Castricum, Netherlands

Adrie A Van Der Huizen