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AssigneeEastman Chemical Company
InventorsEric Jon Moskala, Kevin Douglas Horton, Rodney Layne Piner, John Walker Gilmer
Estimating the term…
A film or sheet having a glass transition temperature below about 23° C. and a melting temperature greater than about 120° C. is prepared by first preparing a polyester composition of about 50 to about 95 weight percent of a base copolyester having a melting temperature of less than about 220° C. and exhibiting more than about 1 percent crystallinity after annealing for 2000 minutes at a temperature of which the base copolyester has a maximum crystallization rate; and about 5 to about 50 weight percent of a plasticizer suitable for use with the base copolyester. The polyester composition is formed into a film or sheet. During formation of the film or sheet or afterwards, crystallization is induced to provide a soft and flexible film or sheet.
A process for preparing a film or sheet having a glass transition temperature below about 23° C. and a melting temperature greater than about 120° C. comprising the steps of:
A process for preparing a film or sheet comprising the steps of:
A film or sheet having a glass transition temperature below about 23° C. and a melting temperature greater than about 120° C. and comprising a polyester composition comprising
A film or sheet having a glass transition temperature below about 23° C. and a melting temperature greater than about 140° C. and comprising a polyester composition comprising
Dependencies are inferred from the claim text.