Application of fluorocarbon compound to synthetic organic polymer yarn

Claim 1

A spin finish for yarn, made from synthetic organic polymer, to be processed at high temperature into a yarn that is oil repellent and resistant to soiling, said spin finish comprising: a. about 5 to 25 percent by weight of said spin finish of a first noncontinuous phase consisting essentially of i. about 15 to 80 weight percent of a nonhomogeneous mixture of a salt of dinonyl sulfosuccinate, a salt of dimethyl naphthalene sulfonate, and ammonium perfluoroalkyl carboxylate, and ii. about 20 to 85 weight percent of a fluorochemical compound having the formula ##STR4## wherein the attachment of the fluorinated radicals and the radicals CO 2 B to the nucleus is in asymmetrical positions with respect to rotation about the axis through the center of the nucleus; wherein "X" is fluorine, or perfluoroalkoxy of 1 to 6 carbon atoms, and m has arithmetic mean between 2 and 20; n is zero or unity; "W" and "Y" are alkylene, cycloalkylene or alkyleneoxy radicals of combined chain length from 2 to 20 atoms; (CF 2 ) m and "Y" have each at least 2 carbon atoms in the main chain; "Z" is oxygen and p is 1, or "Z" is nitrogen and p is 2; q is an integer of at least 2 but not greater than 5; "B" is CH 2 RCHOH or is CH 2 RCHOCH 2 RCHOH where "R" is hydrogen or methyl, or "B" is CH 2 CH(OH)CH 2 Q where Q is halogen, hydroxy, or nitrile; or "B" is CH 2 CH(OH)CH 2 OCH 2 CH(OH)CH 2 Q; and r is an integer of at least 1 but not greater than q; and X(CF) 2 ) m , W and Y are straight chains, branched chains or cyclic; and wherein the substituent chains of the above general formulas are the same or different; b. about 50 to 90 percent by weight of said spin finish of water; and c. about 5 to 25 percent by weight of said spin finish of a second noncontinuous phase which is capable of being emulsified with said first noncontinuous phase and said water without separation of any of the component parts of said spin finish.