Soil resistant yarn finish for synthetic organic polymer yarn

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 1.5 to 25 percent by weight of said spin finish of a first noncontinuous phase comprising
• i. about 15 to 80 weight percent of a solution of a salt of dioctyl sulfosuccinate, propylene glycol and water, 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.sub.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.sub.2).sub.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.sub.2 RCHOH or is CH.sub.2 RCHOCH.sub.2 RCHOH where "R" is hydrogen or methyl, or "B" is CH.sub.2 CH(OH)CH.sub.2 Q where Q is halogen, hydroxy, or nitrile;
• or "B" is CH.sub.2 CH(OH)CH.sub.2 OCH.sub.2 CH(OH)CH.sub.2 Q;
• and r is an integer of at least 1 but not greater than q;
• and X(CF.sub.2).sub.m, W and Y are straight chains, branched chains or cyclic;
• and wherein the substituent chains of the above general formulas are the sam or different;
• and
• iii. an effective amount of said first noncontinuous phase of a dispersant chosen from the group consisting of a salt of a polycarboxylic acid, a salt of a sulfonated naphthalene-formaldehyde condensate, and a salt of an alkyl naphthalene sulfonate;
• b. about 50 to 96 percent by weight of said spin finish of water;
• and
• c. about 2.5 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.

A spin finish for yarn, made from synthetic organic polymer, to be processed at low temperature into a yarn that is oil repellent and resistant to soiling, said spin finish comprising:

• a. about 2.6 to 25 percent by weight of said spin finish of a first noncontinuous phase comprising
• i. about 15 to 80 weight percent of a solution of a salt of dioctyl sulfosuccinate, propylene glycol and water;
• ii. about 20 to 85 weight percent of a fluorochemical compound having the formula ##STR6## wherein the attachment of the fluorinated radicals and the radicals CO.sub.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.sub.2).sub.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.sub.2 RCHOH or is CH.sub.2 RCHOCH.sub.2 RCHOH where "R" is hydrogen or methyl, or "B" is CH.sub.2 CH(OH)CH.sub.2 Q where Q is halogen, hydroxy, or nitrile;
• or "B" is CH.sub.2 CH(OH)CH.sub.2 OCH.sub.2 CH(OH)CH.sub.2 Q;
• and r is an integer of at least 1 but not greater than q;
• and X(CF.sub.2).sub.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;
• and
• iii. an effective amount of a dispersant selected from the group consisting of a salt of a polycarboxylic acid, a salt of a sulfonated naphthalene-formaldehyde condensate, and a salt of an alkyl naphthalene sulfonate;
• b. about 50 to 95 percent by weight of said spin finish of water;
• and
• c. about 2.5 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.