Isocyanate-modified rigid thermoplastic polymer compositions
AssigneeEastman Chemical Company
InventorsMarc Alan Strand, Thomas Joseph Pecorini, Patricia Hill-Wilder, Tabatha Stearns, Ross W. Yost, Jason Christopher Jenkins
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Abstract
Thermoplastic polymer compositions having enhanced properties, as well as methods of making and using the same, are provided. Thermoplastic polymers according to some aspects of the present invention may be rigid, but may also be suitable for use in applications requiring a thermoplastic polymer resin. Thermoplastic polymers according to various aspects of the present invention may be useful in preparing shaped articles such as, for example, sheets, films, tubes, preforms, bottles, profiles, and other similar articles.
Claims20
A thermoplastic polymer comprising:
- (a) residues of at least one linear polymeric polyester diol, wherein said linear polymeric polyester diol comprises residues of—
- (i) at least one monomeric diacid;
- and
- (ii) at least one monomeric diol,
- wherein said linear polymeric polyester diol has a number average molecular weight of at least 400 Daltons;
- and
- (b) residues of at least one diisocyanate monomer, wherein said residues of said diisocyanate monomer are present in said polymer in an amount of not more than 40 weight percent, based on the total weight of said polymer, wherein said polymer has a glass transition temperature (Tg) of at least 140° C.
A method for making a thermoplastic polymer comprising:
- combining at least one polymeric polyester diol, at least one monomeric diisocyanate, and, optionally, at least one supplemental monomeric diol in a reaction zone, optionally, in the presence of a catalyst;
- and
- reacting the combination in the reaction zone to form a thermoplastic polymer;
- wherein the thermoplastic polymer comprises:
- (a) residues of the at least one linear polymeric polyester diol, wherein said linear polymeric polyester diol comprises residues of—
- (i) at least one monomeric diacid;
- and
- (ii) at least one monomeric diol,
- wherein said linear polymeric polyester diol has a number average molecular weight of at least 400 Daltons;
- and
- (b) residues of the at least one diisocyanate monomer, wherein said residues of said diisocyanate monomer are present in said polymer in an amount of not more than 40 weight percent, based on the total weight of said polymer, and
- wherein said polymer has a glass transition temperature of at least 140° C.
Dependencies are inferred from the claim text.