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US 7,781,562 B2Granted
Polyester compositions containing cyclobutanediol having a certain combination of inherent viscosity and moderate glass transition temperature and articles made therefrom
AssigneeEastman Chemical Company
InventorsEmmett Dudley Crawford, Thomas Joseph Pecorini, Douglas Stephens McWilliams, David Scott Porter, Gary Wayne Connell
Life of this patent
Estimating the term…
Abstract
Described are polyesters comprising (a) a dicarboxylic acid component comprising terephthalic acid residues; optionally, aromatic dicarboxylic acid residues or aliphatic dicarboxylic acid residues; 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; and 1,4-cyclohexanedimethanol residues. The polyesters may be manufactured into articles such as fibers, films, bottles or sheets.
Claims36
A polyester composition comprising at least one polyester which comprises:
- (a) a dicarboxylic acid component comprising:
- i) 80 to 100 mole % of terephthalic acid residues;
- ii) 0 to 20 mole % of aromatic dicarboxylic acid residues having up to 20 carbon atoms;
- and
- iii) 0 to 10 mole % of aliphatic dicarboxylic acid residues having up to 16 carbon atoms;
- and
- (b) a glycol component comprising:
- i) 20 to 30 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues;
- and
- ii) 70 to 80 mole % of 1,4-cyclohexanedimethanol residues,
- wherein the total mole % of the dicarboxylic acid component is 100 mole %, and the total mole % of the glycol component is 100 mole %;
- wherein the inherent viscosity of said polyester is from 0.60 to 0.75 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.5 g/100 ml at 25° C.;
- wherein said polyester has a Tg of 100 to 130° C.;
- wherein said polyester has a notched Izod impact strength of at least 7.5 ft-lb/inch at 23° C. according to ASTM D256 with a 10-mil notch in a ⅛-inch thick bar;
- wherein the melt viscosity of said polyester is less than 10,000 poise as measured at 1 radian/second on a rotary melt rheometer at 290° C.;
- and
- wherein said polyester composition contains no polycarbonate.
14 more elements
A polyester composition comprising at least one polyester which comprises:
- (a) a dicarboxylic acid component comprising:
- i) 80 to 100 mole % of terephthalic acid residues;
- ii) 0 to 20 mole % of aromatic dicarboxylic acid residues having up to 20 carbon atoms;
- and
- iii) 0 to 10 mole % of aliphatic dicarboxylic acid residues having up to 16 carbon atoms;
- and
- (b) a glycol component comprising:
- i) 20 to 30 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues;
- and
- ii) 70 to 80 mole % of 1,4-cyclohexanedimethanol residues,
- wherein the total mole % of the dicarboxylic acid component is 100 mole %, and the total mole % of the glycol component is 100 mole %;
- wherein the inherent viscosity of said polyester is from 0.65 to 0.75 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.5 g/100 ml at 25° C.;
- wherein said polyester has a Tg of 100 to 130° C.;
- wherein said polyester has a notched Izod impact strength of at least 7.5 ft-lb/inch at 23° C. according to ASTM D256 with a 10-mil notch in a ⅛-inch thick bar at 23° C.;
- wherein the melt viscosity of said polyester is less than 10,000 poise as measured at 1 radian/second on a rotary melt rheometer at 290° C.;
- and
- wherein said polyester composition contains no polycarbonate.
14 more elements
A polyester composition comprising at least one polyester which comprises:
- (a) a dicarboxylic acid component comprising:
- i) 80 to 100 mole % of terephthalic acid residues;
- ii) 0 to 20 mole % of aromatic dicarboxylic acid residues having up to 20 carbon atoms;
- and
- iii) 0 to 10 mole % of aliphatic dicarboxylic acid residues having up to 16 carbon atoms;
- and
- (b) a glycol component comprising:
- i) 20 to 30 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues;
- and
- ii) 70 to 80 mole % of 1,4-cyclohexanedimethanol residues,
- iii) 0.01 to less than 15 mole % ethylene glycol residues;
- wherein the total mole % of the dicarboxylic acid component is 100 mole %, and the total mole % of the glycol component is 100 mole %;
- wherein the inherent viscosity of said polyester is from 0.60 to 0.75 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.5 g/100 ml at 25° C.;
- wherein said polyester has a Tg of 100 to 130° C.;
- wherein said polyester has a notched Izod impact strength of at least 7.5 ft-lb/inch at 23° C. according to ASTM D256 with a 10-mil notch in a ⅛-inch thick bar;
- wherein the melt viscosity of said polyester is less than 10,000 poise as measured at 1 radian/second on a rotary melt rheometer at 290° C.;
- and
- wherein said polyester composition contains no polycarbonate.
15 more elements
A polyester composition comprising at least one polyester which comprises:
- (a) a dicarboxylic acid component comprising:
- i) 80 to 100 mole % of terephthalic acid residues;
- ii) 0 to 20 mole % of aromatic dicarboxylic acid residues having up to 20 carbon atoms;
- and
- iii) 0 to 10 mole % of aliphatic dicarboxylic acid residues having up to 16 carbon atoms;
- (b) a glycol component comprising:
- i) 20 to 30 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues;
- and
- ii) 70 to 80 mole % of 1,4-cyclohexanedimethanol residues, and
- (c) residues of at least one branching agent in the amount of 0.01 to 10 mole % based on the total mole percentage of the diacid residues or diol residues;
- wherein the total mole % of the dicarboxylic acid component is 100 mole %, and the total mole % of the glycol component is 100 mole %;
- wherein the inherent viscosity of said polyester is from 0.60 to 0.75 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.5 g/100 ml at 25° C.;
- wherein said polyester has a Tg of 100 to 130° C.;
- wherein said polyester has a notched Izod impact strength of at least 7.5 ft-lb/inch at 23° C. according to ASTM D256 with a 10-mil notch in a ⅛-inch thick bar;
- wherein the melt viscosity of said polyester is less than 10,000 poise as measured at 1 radian/second on a rotary melt rheometer at 290° C.;
- and
- wherein said polyester composition contains no polycarbonate.
14 more elements
A polyester composition comprising:
- (I) at least one polyester which comprises:
- (a) a dicarboxylic acid component comprising:
- i) 80 to 100 mole % of terephthalic acid residues;
- ii) 0 to 20 mole % of aromatic dicarboxylic acid residues having up to 20 carbon atoms;
- and
- iii) 0 to 10 mole % of aliphatic dicarboxylic acid residues having up to 16 carbon atoms;
- and
- (b) a glycol component comprising:
- i) 20 to 30 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues;
- and
- ii) 70 to 80 mole % of 1,4-cyclohexanedimethanol residues;
- and
- (II) at least one thermal stabilizer or the reaction product thereof chosen from at least one of phosphoric acid, phosphorous acid, phosphoric acid, phosphinic acid, phosphonous acid, or an ester or salt thereof;
- wherein the total mole % of the dicarboxylic acid component is 100 mole %, and the total mole % of the glycol component is 100 mole %;
- wherein the inherent viscosity of said polyester is from 0.60 to 0.75 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.5 g/100 ml at 25° C.;
- wherein said polyester has a Tg of 100 to 130° C.;
- wherein said polyester has a notched Izod impact strength of at least 7.5 ft-lb/inch at 23° C. according to ASTM D256 with a 10-mil notch in a ⅛-inch thick bar;
- wherein the melt viscosity of said polyester is less than 10,000 poise as measured at 1 radian/second on a rotary melt rheometer at 290° C.;
- and
- wherein said polyester composition contains no polycarbonate.
17 more elements
Dependencies are inferred from the claim text.