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US 7,803,439 B2Granted
Blood therapy containers comprising polyester compositions formed from 2,2,4,4-tetramethyl-1,3-cyclobutanediol and 1,4-cyclohexanedimethanol
AssigneeEastman Chemical Company
InventorsEmmett Dudley Crawford, David Scott Porter, Gary Wayne Connell
Life of this patent
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Abstract
Described are blood therapy containers comprising polyester compositions comprising polyesters which comprise (a) a dicarboxylic acid component having terephthalic acid residues; optionally, aromatic dicarboxylic acid residues or aliphatic dicarboxylic acid residues or ester residues thereof; 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; and 1,4-cyclohexanedimethanol residues.
Claims47
A blood therapy container comprising at least one polyester composition comprising at least one polyester, which comprises:
- (a) a dicarboxylic acid component comprising:
- i) 70 to 100 mole % of terephthalic acid residues;
- ii) 0 to 30 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 %, the total mole % of the glycol component is 100 mole %;
- wherein the inherent viscosity of the 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 the polyester has a Tg of from 100 to 130° C.;
- wherein said blood therapy container comprises no polycarbonate;
- wherein the polyester has a notched Izod impact strength of at least 7.5 ft-lbs/in at 23° C. according to ASTM D256 with a 10-mil notch in a ⅛-inch thick bar;
- and
- wherein the melt viscosity of said polyester is less than 10,000 poise as measured at 1radian/second on a rotary melt rheometer at 290° C.
14 more elements
A blood therapy container comprising a polyester, which comprises:
- (a) a dicarboxylic acid component comprising:
- i) 70 to 100 mole % of terephthalic acid residues;
- ii) 0 to 30 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 %, the total mole % of the glycol component is 100 mole %;
- and
- wherein the inherent viscosity of the 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/100ml at 25° C.;
- wherein the polyester has a Tg of from 100 to 120° C.;
- wherein said blood therapy container comprises no polycarbonate;
- wherein the polyester has a notched Izod impact strength of at least 7.5 ft-lbs/in at 23° C. according to ASTM D256with a 10-mil notch in a ⅛-inch thick bar;
- and
- wherein the melt viscosity of the polyester is less than 10,000 poise as measured at 1 radian/second on a rotary melt rheometer at 290° C.
15 more elements
A blood therapy container comprising at least one polyester composition comprising at least one polyester, which comprises:
- (a) a dicarboxylic acid component comprising:
- i) 70 to 100 mole % of terephthalic acid residues;
- ii) 0 to 30 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 %, the total mole % of the glycol component is 100 mole %;
- and
- wherein the inherent viscosity of the polyester is from 0.55 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.;
- and
- wherein the polyester has a Tg of from 100 to 130° C.;
- wherein the polyester comprises residues of at least one branching agent;
- wherein said blood therapy container comprises no polycarbonate;
- wherein the polyester has a notched Izod impact strength of at least 7.5 ft-lbs/in at 23° C. according to ASTM D256 with a 10-mil notch in a ⅛-inch thick bar;
- and
- wherein the melt viscosity of the polyester is less than 10,000 poise as measured at 1 radian/second on a rotary melt rheometer at 290° C.
17 more elements
A blood therapy container comprising at least one polyester composition comprising at least one polyester, which comprises:
- (a) a dicarboxylic acid component comprising:
- i) 70 to 100 mole % of terephthalic acid residues;
- ii) 0 to 30 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 %, the total mole % of the glycol component is 100 mole %;
- and
- wherein the inherent viscosity of the 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 the polyester has a Tg of from 100 to 115° C.
- wherein said polyester composition comprises a thermal stabilizer;
- wherein said blood therapy container comprises no polycarbonate;
- wherein the polyester has a notched Izod impact strength of at least 7.5 ft-lbs/in at 23° C. according to ASTM D256 with a 10-mil notch in a ⅛-inch thick bar;
- and
- wherein the melt viscosity of the polyester is less than 10,000 poise as measured at 1 radian/second on a rotary melt rheometer at 290° C.
16 more elements
Dependencies are inferred from the claim text.