Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2008-05-06
2008-05-06
Woodward, Ana (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S054240, C525S066000, C525S067000, C525S09200D, C525S09200D, C525S09200D, C525S165000, C525S166000, C525S173000, C525S176000, C525S178000, C525S186000
Reexamination Certificate
active
10999475
ABSTRACT:
This invention relates to a blend of biodegradable polymers comprising:(A) about 5% to about 95% by weight of at least one flexible biodegradable polymer (A) having a glass transition less than about 0° C.,(B) about 5% to about 95% by weight of at least one rigid biodegradable polymer (B) having a glass transition greater than about 10° C., and(C) about 0.25 to about 10 weight % of at least one compatibilizer (C), said percentages being based on the total weight of the polymer blend;where the polymer blend has a higher zero shear melt viscosity than polymers (A) and (B) separately.
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Boshears Betty J.
Eastman Chemical Company
Graves, Jr. Bernard J.
Moreno Louis N.
Woodward Ana
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