Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Reexamination Certificate
2006-07-04
2006-07-04
Hightower, P. Hampton (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
C528S125000, C528S126000, C528S128000, C528S172000, C528S173000, C528S174000, C528S176000, C528S179000, C528S183000, C528S185000, C528S188000, C528S220000, C528S228000, C528S229000, C528S350000, C528S351000, C528S353000, C525S420000, C525S422000, C525S432000
Reexamination Certificate
active
07071282
ABSTRACT:
Disclosed herein are polyetherimide compositions comprising structural units of the formula:derived from at least one benzimidazole diamine, wherein R1and R2are independently selected from hydrogen and C1–C6alkyl groups; “A” comprises structural units of the formulae:or mixtures of the foregoing structural units; wherein “D” is a divalent aromatic group, R3and R10–R12are independently selected from hydrogen, halogen, and C1–C6alkyl groups; “q” is an integer having a value of 1 up to the number of positions available on the aromatic ring for substitution; and “W” is a linking group; and “B” comprises substituted and unsubstituted arylene groups having from about 6 to about 25 carbon atoms. Methods for producing the polyetherimide compositions are also disclosed herein.
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Acar Havva
Brunelle Daniel Joseph
Caruso Andrew J.
Hampton Hightower P.
Powell, III William E.
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