Multifilament polyethylene terephthalate yarn

Claim 2

A SYNTHETIC FILAMENTARY YARN COMPRISED OF POLYETHYLENE TEREPHTHALATE FILAMENTS WHICH ARE FIRST COATED WITH FROM ABOUT 0.3 TO ABOUT 0.6 WEIGHT PERCENT BASED ON THE WEIGHT OF THE YARN OF A LIQUID COMPOSITION CONSISTING ESSENTIALLY OF ABOUT 10 TO ABOUT 20 WEIGHT PERCENT OF SAID COMPOSITION OF EACH HEXADECYL STEARATE AND REFINE COCONUT OIL, ABOUT 3.0 TO ABOUT 6.0 WEIGHT PERCENT OF SAID COMPOSITION OF ETHOXYLATED TALLOW AMINE ABOUT 10 TO ABOUT 20 WEIGHT PERCENT OF SAID COMPOSITION OF ETHOXYLATED LAURYL ALCOHOL, ABOUT 8.0 TO ABOUT 12.0 WEIGHT PERCENT OF SAID COMPOSITION OF SODIUM SALT OF ALKYLARYLSULFONATE, ABOUT 1.0 TO ABOUT 3.0 WEIGHT PERCENT OF SAID COMPOSITION OF DINONYL-SODIUM-SULFOSUCCINATE, ABOUT 1.0 TO ABOUT 3.0 WEIGHT PERCENT OF SAID COMPOSITION OF AN ANTIOXIDANT SELECTED FROM THE GROUP CONSISTING OF 4,4''-BUTYLIDENE-BIS-(6TERT-BUTYL-M-CRESOL), THIO-BIS-(S9-SEC-AMYLPHENOL), TRINONYL PHENYL PHOSPHITE, AND 2.2-METHYLENE-BIS-(4-METHYL-6-TERTNONYLPHENOL), ABOUT 35 TO 50 WEIGHT PERCENT OF SAID COMPOSITION OF WHITE MINERAL OIL HAVING A BOILING POINT OF BETWEEN 510*F. AND 620*F. WHEREIN AT LEAST ABOUT 0.15 TO ABOUT 0.30 WEIGHT PERCENT IS RETAINED ON SAID YARN, AND TEN COATED WITH FROM ABOUT 0.05 TO ABOUT 2.0 WEIGHT PERCENT, BASED ON THE WEIGHT OF THE FINISHED YARN, OF AN OXIDIZED POLYETHYLENE WAX HAVING AN AVERAGE MOLECULAR WEIGHT BETWEEN ABOUT 1,000 AND ABOUT 4,000 AND AN OXYGEN CONTENT BETWEEN ABOUT 3 PERCENT AND ABOUT 6 PERCENT BY WEIGHT.

Claim 3

The synthetic filamentary yarn of claim 1 wherein the antioxidant is 2,2-methylene-bis-(4-methyl-6-tert-nonylphenol).

Claim 4

The synthetic filamentary yarn of claim 1 wherein the yarn is coated with about 0.1 to 1.2 weight percent, based on the weight of the finished yarn, of the oxidized polyethylene wax.

Claim 5

In a process of producing polyethylene terephthalate yarn wherein a liquid is applied to the yarn, said process involving spinning and drawing steps, the improvement comprising first applying to the yarn prior to said drawing step from about 0.3 to about 0.6 weight percent based on the weight of the yarn of a liquid composition consisting essentially of about 10 to about 20 weight percent of said composition of each hexadecyl stearate and refined coconut oil, about 3.0 to about 6.0 weight percent of said composition of ethoxylated tallow amine, about 10 to about 20 weight percent of said composition of ethoxylated lauryl alcohol, about 8.0 to about 12.0 weight percent of said composition of sodium salt of alkylarylsulfonate, about 1.0 to about 3.0 weight percent of said composition of dinonyl-sodium-sulfo-succinate, about 1.0 to about 3.0 weight percent of said composition of an antioxidant selected from the group consisting of 4,4''-butylidene-bis-(6-tert-butyl-m-cresol), thio-bis-(di-sec-amylphenol), trinonyl phenol phosphite, and 2,2-methylene-bis-(4-methyl-6-tert-nonylphenol), about 35 to 50 weight percent of said composition of white mineral oil having a boiling point of between 510*F. and 620*F. wherein at least about 0.15 to about 0.30 weight percent is retained on said yarn, and then applying to said yarn after said drawing step from about 0.05 to about 2.0 weight percent, based on the weight of the finished yarn, of an oxidized polyethylene wax having an average molecular weight between about 1,000 and about 4,000 and an oxygen content between about 3 percent and about 6 percent by weight.

Claim 6

In a process of producing polyethylene terephthalate yarn wherein a liquid is applied to the yarn, said process involving spinning and drawing steps, the improvement comprising first applying to the yarn prior to said drawing step from about 0.3 to about 0.6 weight percent based on the weight of the yarn of a liquid composition consisting essentially of about 10 to about 20 weight percent of said composition of each hexadecyl stearate and refined coconut oil, about 3.0 to about 6.0 weight percent of said composition of ethoxylated tallow amine, about 10 to about 20 weight percent of said composition of ethoxylated lauryl alcohol, about 8.0 to about 12.0 weight percent of said composition of sodium salt of alkylarylsulfonate, about 1.0 to about 3.0 weight percent of said composition of dinonyl-sodium-sulfo-succinate, about 1.0 to about 3.0 weight percent of said composition of an antioxidant selected from the group consisting of 4,4''-butylidene-bis-(6-tert-butyl-m-cresol), thio-bis-(di-sec-amylphenol), trinonyl phenol phosphite, and 2,2-methylene-bis-(4-methyl-6-tert-nonylphenol), about 35 to 50 weight percent of said composition of white mineral oil having a boiling point of between 510*F. and 620*F. wherein at least about 0.15 to about 0.30 weight percent is retained on said yarn, and then applying to said yarn after said drawing step from about 0.05 to about 2.0 weight percent, based on the weight of the finished yarn, of an oxidized polyethylene wax having an average molecular weight between about 1,000 and about 4,000 and an oxygen content between about 3 percent and about 6 percent by weight.

Claim 7

The process of claim 4 wherein the oxidized polyethylene wax is applied to the yarn in the form of an aqueous emulsion and the yarn is thereafter heated to a temperature between about 100*C. and about 135*C., thereby providing a water resistant coating on said yarn.

Claim 8

The process of claim 5 wherein the antioxidant is 2,2-methylene-bis-(4-methyl-6-tert-nonylphenol).

Claim 9

The process of claim 5 wherein about 0.1 to 1.2 weight percent, based on the weight of the finished yarn, of the oxidized polyethylene wax is applied to the yarn.