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
2011-04-05
2011-04-05
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...
C442S288000, C442S290000, C442S301000, C442S389000, C442S396000, C442S398000, C156S327000, C156S334000, C210S500420, C521S025000, C521S033000, C428S500000, C428S521000, C428S523000, C525S313000, C525S314000, C525S315000, C525S316000, C525S291000, C526S287000
Reexamination Certificate
active
07919565
ABSTRACT:
A composition having a sulfonated block copolymer which is solid and non-dispersible in water having at least two polymer end blocks A, at least one polymer interior block B, and at least one polymer block D. Each A block is a segment of one or more polymerized para-substituted styrene monomers, each B block contains segments of one or more vinyl aromatic monomers selected from polymerized (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, and each D block having a glass transition temperature of less than 20° C. and a number average molecular weight of between 1,000 and 50,000 Adhesives, coatings and membranes are formed from the composition. Various articles are formed with the composition including films, fibers, fabrics, laminates, and absorbent cores.
REFERENCES:
patent: 4505827 (1985-03-01), Rose et al.
patent: 5239010 (1993-08-01), Balas et al.
Handlin, Jr. Dale Lee
Mather Brian Douglas
Trenor Scott Russell
Willis Carl Lesley
Boyle Robert C
Jagannathan Vasu
Kraton Polymers U.S. LLC
Masse Michael A.
Novak Druce & Quigg
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