Polyesters having improved disperse dyeability
AssigneeThe Goodyear Tire & Rubber Company
InventorsManeung Hahn, Leroy C. T. Lin, William C. T. Tung
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Abstract
Polyethylene terephthalate block copolyesters having ethylene terephthalate blocks and hydantoin polymer blocks for improved disperse dyeability and improved antistatic properties. The copolyesters are prepared by conventional methods using blocks of low molecular weight polyethylene terephthalate and hydantoin polyester.
Claims6
A polyethylene terephthalate block copolyester in which the copolyester comprises a polymer of a derivative of a hydantoin diacid and a hydantoin diol having the general formula ##EQU2## where R.sub.1 and R.sub.2 are hydrogen, alkyl, aryl, aralkyl and heterocyclic compounds, n and n' are integers from 1 to 10 and X is --OH in the hydantoin diol and --COOH in the hydantoin diacid said copolyester block being present in the polyethylene terephthalate block copolyester in an amount of from 1 to 20 percent by weight of said block copolyester.
Dependencies are inferred from the claim text.