Poly(alkylene ether)s as plasticizers and flow aids in poly (1,4-cyclohexanedimethylene terephthalate) resins
AssigneeEastman Chemical Company
InventorsAndrew Edwin Brink, Sam Richard Turner, Gerald Timothy Keep
Life of this patent
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Abstract
This invention relates to a polyester composition comprising a blend of: (A) 99.5 to 75 weight % of a copolyester having an inherent viscosity of 0.1 to 1.2 dL/g and having a melting point in excess of 250.degree. C., comprising: (a) one or more dicarboxylic acids, and (b) a glycol component comprising at least 80 mole % 1,4-cyclohexanedimethanol; and (B) 0.5 to 25 weight % of one or more polyalkylene ethers, wherein the weight percentages of all components in said blend total 100 weight %.
Claims32
A polyester composition comprising a blend of:
- (A) 97.0 to 75.0 weight % of a copolyester having an inherent viscosity of 0.1 to 1.2 dL/g and having a melting point in excess of 250.degree. C., comprising:
- (1) one or more dicarboxylic acids, and
- (2) a glycol component comprising at least 80 mole % 1,4-cyclohexanedimethanol;
- and
- (B) 3.0 to 25.0 weight % of one or more polyalkylene ethers, wherein the molecular weight of the polyalkylene ether is from 200 to 1500 and the polyalkylene ether comprises a compound of the formula:
- ##STR2## wherein, m is an integer from 1 to 3, inclusive,
- n is an integer from 4 to 25, inclusive,
- X is selected from one or more of the group consisting of CH.sub.3, C.sub.3 H.sub.7, C.sub.2 H.sub.5, and H,
- A is hydrogen, alkyl, acyl, or aryl of 1 to 10 carbon atoms, and
- B is hydrogen, alkyl, acyl, or aryl of 1 to 10 carbon atoms;
- and wherein the weight percentages of all components in the blend total 100 weight %.
A method for decreasing the glass transition temperature and the melt viscosity of a polyester composition comprising a copolyester having an inherent viscosity of 0.1 to 1.2 dL/g and having a melting point in excess of 250.degree. C., the copolyester comprising:
- (a) one or more dicarboxylic acids, and
- (b) a glycol component comprising at least 80 mole % 1,4-cyclohexanedimethanol;
- wherein the method comprises the step of adding to the polyester composition 3.0 to 25.0 weight % of one or more polyalkylene ethers, wherein the molecular weight of the polyalkylene ether is from 200 to 1500, and the polyalkylene ether comprises a compound of the formula:
- ##STR3## wherein, m is an integer from 1 to 3, inclusive,
- n is an integer from 4 to 25, inclusive,
- X is selected from one or more of the group consisting of CH.sub.3, C.sub.3 H.sub.7, C.sub.2 H.sub.5, and H,
- A is hydrogen, alkyl, acyl, or aryl of 1 to 10 carbon atoms, and
- B is hydrogen, alkyl, acyl, or aryl of 1 to 10 carbon atoms;
- and wherein the weight percentages of the copolyester and the one or more polyalkylene ethers total 100 weight %.
A polyester composition consisting essentially of a blend of:
- (A) 97.0 to 75.0 weight % of a copolyester having an inherent viscosity of 0.1 to 1.2 dL/g and having a melting point in excess of 250.degree. C., comprising:
- (1) one or more dicarboxylic acids,
- (2) a glycol component comprising at least 80 mole % 1,4-cyclohexanedimethanol;
- and
- (B) 3.0 to 25.0 weight % of one or more polyalkylene ethers, wherein the molecular weight of said polyalkylene ether is from 200 to 1500 and the polyalkylene ether comprises a compound of the formula:
- ##STR4## wherein, m is an integer from 1 to 3, inclusive,
- n is an integer from 4 to 25, inclusive,
- X is selected from one or more of the group consisting of CH.sub.3, C.sub.3 H.sub.7, C.sub.2 H.sub.5, and H,
- A is hydrogen, alkyl, acyl, or aryl of 1 to 10 carbon atoms, and
- B is hydrogen, alkyl, acyl, or aryl of 1 to 10 carbon atoms;
- and wherein the weight percentages of all components in the blend total 100 weight %.
Dependencies are inferred from the claim text.