Baby bottles comprising polyester compositions which comprise cyclobutanediol
AssigneeEastman Chemical Company
InventorsEMMETT DUDLEY CRAWFORD, THOMAS JOSEPH PECORINI, DAVID SCOTT PORTER, GARY WAYNE CONNELL, MICHAEL JAMES KEEGAN
Life of this patent
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Abstract
Described are baby bottle(s) comprising polyesters comprising (a) a dicarboxylic acid component having terephthalic acid or an ester thereof; optionally, an aromatic dicarboxylic acid or aliphatic dicarboxylic acid or esters thereof; 2,2,4,4-tetramethyl-1,3-cyclobutanediol; and 1,4-cyclohexanedimethanol.
Claims20
An injection blow molded baby bottle comprising at least one 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) 15 to 40 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues;
- and
- ii) 60 to 85 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 0.50 to 0.68 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 from 100 to 130° C.;
- wherein said polyester has a melt viscosity of less than 10,000 poise as measured at 1 radian/second on a rotary melt rheometer at 290° 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.
An injection blow molded baby bottle comprising at least one 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 an aliphatic dicarboxylic acid residues having up to 16 carbon atoms;
- (b) a glycol component comprising:
- i) 15 to 40 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues;
- and
- ii) 60 to 85 mole % of 1,4-cyclohexanedimethanol residues;
- (c) residues of at least one branching agent;
- 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 0.55 to 0.68 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 110 to 130° C.;
- wherein said polyester has a melt viscosity of less than 10,000 poise as measured at 1 radian/second on a rotary melt rheometer at 290° 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.
Dependencies are inferred from the claim text.