Fluorination of polyesters and polyamide fibers
AssigneeAir Products and Chemicals, Inc.
InventorsDale D. Dixon, Larry J. Hayes
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Abstract
The present invention relates to surface modification of synthetic resin fiberform materials, notably polyamide and polyester fiberform materials whose surface has been modified by treatment with elemental fluorine, and to the fluorination process.
Claims14
An oil stain release moisture transporting fiber form comprising a synthetic resin selected from the group consisting of polyamides and polyesters, said fiber form being surface fluorinated from about [4 .times. 10.sup.-.sup.7 to 4 .times. 10.sup.-.sup.1 ] 4 .times. 10.sup.-.sup.6 to 1 .times. 10.sup.-.sup.3 mg F/cm.sup.2 on an after wash basis, said fluorinated fiber form exhibiting a neutralization equivalent of below about 15,000 and said fluorinated fiber form having at least 90% of the tensile strength of untreated fiber form.
A method for surface treating a fiber form comprising a synthetic resin selected from the group consisting of polyamides and polyesters which comprises contacting the fiber form for less than 15 minutes with a fluorine containing gas having less than about 1% by volume of elemental oxygen, and from about 0.1-5% by volume of elemental fluorine to a combined fluorine level in the fiber form to from 4 .times. 10.sup.-.sup.6 to 1 .times. 10.sup.-.sup.3 mg F/cm.sup.2 on an after wash basis.
Dependencies are inferred from the claim text.