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
2004-07-30
2011-11-22
Nerangis, Vickey (Department: 1762)
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...
C524S502000, C428S421000
Reexamination Certificate
active
08063135
ABSTRACT:
The present invention relates to a water-based polymer composition, comprising:at least one polymer (P) comprising recurring units (R1), from 0 to at most 25% mol of said recurring units (R1) comprising a carboxylic acid group (in acid or salt form);at least one aromatic polyamic acid (A) comprising recurring units, more than 50% mol of said recurring units comprising at least one aromatic ring and at least one amic acid group and/or imide group [recurring units (R2)], more than 50% mol of recurring units (R2) comprising at least one amic acid group, part or all of the amic acid groups being neutralized by at least one basic compound (B);water;optionally, at least one organic solvent (S) of the aromatic polyamic acid (A), in an amount of less than 20% wt with respect to the weight of the aromatic polyamic acid.The polymer (P) is preferably a fluoropolymer; it can be either a partially fluorinated fluoropolymer, such as ECTFE, or a perfluorinated fluoropolymer such as TFE polymers.The water-based polymer compositions of this invention may be notably found useful for coating applications where organic solvents may not be desired or tolerated.
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Full English-language translation of JP 57-177067, Oct. 30, 1982.
Gibala David
Lippl Anthony
Poggio Tiziana
Shiow-Ling Lin
Underwood Geoffrey Scott
Nerangis Vickey
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Solvay ( Societe Anonyme)
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