Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Reexamination Certificate
2007-01-09
2007-01-09
Boykin, Terressa (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
C264S176100, C264S219000, C428S411100, C428S412000, C528S193000, C528S194000, C528S272000
Reexamination Certificate
active
11005587
ABSTRACT:
This invention relates to a blend of biodegradable polymers comprising:(A) about 70% to about 80% by weight of at least one flexible biodegradable polymer (A) having a glass transition less than about 0° C.,(B) about 30% to about 20% by weight of at least one rigid biodegradable polymer (B) having a glass transition greater than about 10° C.;said percentages being based on the total weight of the polymer blend;wherein said polymer blend has a notched Izod impact strength according to ASTM D256 of at least 7.5 ft-lbs/in.
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Hale Wesley Raymond
Tanner Candace Michele
Bernard J. Graves, Jr.
Boshears B. J.
Boykin Terressa
Eastman Chemical Company
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