Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2010-04-20
2011-11-15
Jagannathan, Vasu (Department: 1764)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S313000, C525S314000, C525S315000, C525S316000, C525S291000, C525S330300, C525S330400, C525S331900, C525S332800, C525S332900, C525S333100, C525S333200, C526S287000, C526S319000, C526S328000, C526S328500, C526S329000, C526S329200, C526S329700
Reexamination Certificate
active
08058353
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.
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Handlin, Jr. Dale Lee
Mather Brian Douglas
Trenor Scott Russell
Willis Carl Lesley
Boyle Robert C
Jagannathan Vasu
Kraton Polymers US LLC
Novak Druce & Quigg LLP
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