Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Reexamination Certificate
2011-03-08
2011-03-08
Cano, Milton I (Department: 1763)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
C528S302000, C528S304000, C528S305000, C525S165000, C525S173000, C525S177000, C525S390000, C525S397000, C525S425000, C525S439000, C525S444000
Reexamination Certificate
active
07902320
ABSTRACT:
Described are graphic art films comprising a polyester compositions comprising at least one polyester, comprising dicarboxylic acid component comprising 70 to 100 mole % of terephthalic acid residues and a glycol component comprising: 20 to 30 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues and 70 to 80 mole % of 1,4-cyclohexanedimethanol residues, wherein the total mole % of the dicarboxylic acid component is 100 mole %, the total mole % of the glycol component is 100 mole %, and polyester has following properties: the inherent viscosity of the polyester is from 0.60 to 0.75 dL/g; Tg of from 100 to 130° C.; notched Izod impact strength of at least 7.5 ft-b/inch at 23° C. according to ASTM D256; the melt viscosity of the polyester is less than 10,000 poise as measured at 1 radian/second on a rotary melt rheometer at 290° C.; and the polyester composition contains no polycarbonate.
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Connell Gary Wayne
Crawford Emmett Dudley
McWilliams Douglas Stephens
Porter David Scott
Boshears Betty J.
Cano Milton I
Eastman Chemical Company
Graves, Jr. Bernard J.
Mesh Gennadiy
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