Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Reexamination Certificate
2006-02-10
2010-02-23
Jagannathan, Vasu (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
C162S158000, C524S035000, C524S047000, C524S368000, C524S377000, C524S425000, C524S447000, C524S451000, C524S462000, C524S492000, C524S497000, C524S800000
Reexamination Certificate
active
07666940
ABSTRACT:
Aqueous dispersions comprising a mixture of:A) from 0.05% by weight to 10% by weight of salts of perfluoropolyether di-carboxylic derivatives having formula:in-line-formulae description="In-line Formulae" end="lead"?T-O—Rf-T (IA)in-line-formulae description="In-line Formulae" end="tail"?whereinT=—CF2—COOZ or —CF2CF2—COOZ wherein Z=Na, K, NH4, R1(R2)(R3)N wherein R1=R2=alkyl or hydroxyalkyl, R3=H, alkyl or hydroxyalkyl,Rfis a (per)fluoropolyoxyalkylene chain having number average molecular weight between 500 and 10,000.B) from 0.01% to 5% by weight of water-dispersible or water-soluble cationic polymers, having a charge density, defined as number of equivalents per weight unit of dry polymer, higher than 1 meq/g of dry polymer.
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Gavezotti Piero
Iengo Paolo
Padigala Mahesh
Arent & Fox LLP
Jagannathan Vasu
LaClair Darcy D
Solvay Solexis S.p.A.
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