Stock material or miscellaneous articles – Composite – Of metal
Reexamination Certificate
2006-12-12
2006-12-12
Chen, Vivian (Department: 1773)
Stock material or miscellaneous articles
Composite
Of metal
C428S457000, C428S480000, C428S910000, C528S302000, C528S305000, C528S307000, C528S308000, C528S308600, C528S308700, C264S288400, C264S290200
Reexamination Certificate
active
07147927
ABSTRACT:
Disclosed are biaxially oriented polyester film produced from a polyester comprising:(1) diacid residues comprising at least 90 mole percent of terephthalic acid residues, naphthalenedicarboylic acid residues or combinations thereof; and(2) diol residues comprising at least 90 mole percent of 1,4-cyclohexanedimethanol residues; wherein the polyester comprises a total of 100 mole percent diacid residues and a total of 100 mole percent diol residues;wherein the polyester film is stretched at a ratio of about 2.5× to 3× in the machine direction (MD) and about 2.5× to 3× in the transverse direction (TD) at stretching temperatures between 90 and 1 10OC, wherein the stretched film is subsequently heat-set at an actual film temperature of from 260° C. to Tm, wherein Tm is the melting point of the polyester as measured by differential scanning calorimetry (DSC), while maintaining the dimensions of the stretched film, and wherein the biaxially oriented and heat-set polyester film undergoes not more than 3% shrinkage when immersed for 10 seconds in a solder bath preheated to 260° C. and exhibits a coefficient of thermal expansion value of 10–85 ppm/° C. when measured between 120 and 150° C., and a coefficient of thermal expansion value of 10–42 ppm/° C. when measured between 25 and 90° C.
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Boone Gary Darrel
Pecorini Thomas Joseph
Boshears B. J.
Chen Vivian
Eastman Chemical Company
Graves, Jr. Bernard J.
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