Polyester plasticizers for halogen-containting polymers
AssigneeVelsicol Chemical Corporation
InventorsJiamin Lang, Franz Josef Luxem, Bruce E. Streeter, Bruce E. Stanhope, Eric R. Zimmermann
Life of this patent
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Abstract
A portion of the repeating units in polyesters useful as plasticizers for rigid organic polymers are derived from diethylene glycol and at least one dicarboxylic acid. The percentage of these repeating units that can be present in polyesters that are compatible with the organic polymer into which they are incorporated is inversely proportional to the weight average molecular weight of the polyester.
Claims15
A liquid polyester plasticizer, wherein the repeating units of said polyester comprise (I) —OCH2CH2OCH2CH2OC(O)R1(O)C—, and (II) —OR2OC(O)R1(O)C—, the terminal groups of said polyester are selected from the group consisting of hydrogen, —R3 and —C(O)R4 and are bonded to an oxygen atom, R1 is at least one member selected from the group consisting of a single bond, alkylene containing from 1 to 20 carbon atoms, cycloalkylene, and ortho-, meta- and para-phenylene;
- R2 is at least one member selected from the group consisting of alkylene, cycloalkylene and oxyalkylene with the proviso that R2 is not —CH2CH2OCH2CH2— or —CH2CH2CH(CH3)—;
- R3 and R4 are individually selected from at least one member of the group consisting of alkyl radicals containing from 1 to 20 carbon atoms, cycloakyl radicals and the phenyl radical, repeating units of formula I constitute up to 75 percent of the repeating units of said polyester.
A plasticized polymer composition comprising a polymer derived at least in part from at least one halogen containing ethylenically unsaturated hydrocarbon and, as the plasticizer, at least one polyester comprising repeating units of the formulae (I) —OCH2CH2OCH2CH2OC(O)R1(O)C—, and (II) —OR2OC(O)R1(O)C—, the terminal groups of said polyester are selected from the group consisting of hydrogen, —R3 and —C(O)R4 and are bonded to an oxygen atom, R1 is at least one member selected from the group consisting of a single bond, alkylene containing from 1 to 20 carbon atoms, cycloalkylene, and ortho-, meta- and para-phenylene;
- R2 is at least one member selected from the group consisting of alkylene, cycloalkylene and oxyalkylene with the proviso that R2 is not —CH2CH2OCH2CH2— or —CH2CH2CH(CH3)—;
- R3 and R4 are individually selected from at least one member of the group consisting of alkyl radicals containing from 1 to 20 carbon atoms, cycloakyl radicals and the phenyl radical and repeating units of formula I constitute up to 75 percent of the repeating units of said polyester.
Dependencies are inferred from the claim text.