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US 5,559,171 AGranted
Aliphatic-aromatic copolyesters and cellulose ester/polymer blends
AssigneeEastman Chemical Company
InventorsCharles M. Buchanan, Robert M. Gardner, Matthew D. Wood, Alan W. White, Steven C. Gedon, Fred D. Barlow, Jr.
Life of this patent
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Abstract
This invention relates to binary blends of cellulose esters and aliphatic-aromatic copolyesters, cellulose esters and aliphatic polyesters as well as ternary blends of cellulose esters and/or aliphatic polyesters and/or aliphatic-aromatic copolyesters and/or polymeric compounds as well as fibers, molded objects, and films prepared therefrom.
Claims37
A binary blend comprising:
- (A) about 5% to about 98% of a C.sub.1 -C.sub.10 ester of cellulose having a number of substituents per anhydroglucose unit of about 1.7 to 3.0 and an inherent viscosity of about 0.2 to about 3.0 deciliters/gram as measured at a temperature of 25.degree. C. for a 0.5 g sample in 100 ml of a 60/40 parts by weight solution of phenol/tetrachloroethane, and
- (B) about 2% to about 95% of an aliphatic-aromatic copolyester having an inherent viscosity of about 0.2 to about 2.0 deciliters/gram as measured at a temperature of 25.degree. C. for a 0.5 g sample in 100 ml of a 60/40 parts by weight solution of phenol/tetrachloroethane, said percentages being based on the weight of component (A) plus component (B).
Dependencies are inferred from the claim text.