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
2011-07-19
2011-07-19
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...
C525S333500, C525S313000, C525S314000, C525S315000, C525S316000, C525S291000, C525S330300, C526S287000, C526S319000, C526S328000, C526S328500, C526S329000, C526S329200, C526S329700
Reexamination Certificate
active
07981970
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 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, wherein the A and B blocks do not contain any significant levels of olefinic unsaturation. Each A block having one or more segments selected from (i) acrylic esters, (ii) methacrylic esters, and (viii) mixtures thereof; and each B block comprising segments of one or more polymerized vinyl aromatic monomers selected from (i) unsubstituted styrene monomers, (ii) ortho-substituted styrene monomers, (iii) meta-substituted styrene monomers, (iv) alpha-methylstyrene, (v) 1,1-diphenylethylene, (vi) 1,2-diphenylethylene and (vii) mixtures thereof.
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Nishida, Macromolecules, 1996, 29, 1507-1515.
Handlin, Jr. Dale Lee
Mather Brian Douglas
Trenor Scott Russell
Willis Carl Lesley
Boyle Robert C
Jagannathan Vasu
Kraton Polymers US LLC
Masse Michael A.
Novak, Druce & Quigg LLC
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