Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Reexamination Certificate
2011-01-11
2011-01-11
Boykin, Terressa M (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
C422S245100, C422S255000, C422S261000, C528S271000, C528S481000, C528S499000, C528S50200C
Reexamination Certificate
active
07868125
ABSTRACT:
A process for producing non-solid-stated polyester polymer particles having one or more properties similar to polyester polymer particles that have undergone solid-state processing. In one embodiment, the process comprises (a) forming polyester polymer particles from a polyester polymer melt; (b) quenching at least a portion of the particles, (c) drying at least a portion of the particles, (d) crystallizing at least a portion of the particles, (e) annealing at least a portion of the particles. At all points during and between steps (b) through (e), the average bulk temperature of the particles is maintained above 165° C.
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Bellner Steven Paul
DeBruin Bruce Roger
Estep Robert Noah
Franjione John Guy
Jernigan Mary Therese
Boykin Terressa M
Eastman Chemical Company
Graves, Jr. Bernard J.
Knight Jennifer R.
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