Spin finish

A process for making yarn comprising the steps of:

• A. extruding polymer to make yarn;
• B. to said yarn applying a spin finish comprising at least about 10 percent by weight based on said spin finish composition of components (a) and (b) having the formula
• R1—(CO)x—O—(CH(R2)—CH2—O)y—(CO)z—R3
• wherein each of R1 and R3 is selected from the group consisting of hydrogen or an alkyl group having from one to 22 carbon atoms or an alkylene hydroxy group having one to 22 carbon atoms,
• x is zero or one,
• R2 may vary within said component (a) or said component (b) and is selected from the group consisting of hydrogen or an alkyl group having from one to four carbon atoms,
• y is zero, or from one to 25,
• z is zero or one,
• in said component (a), x and z are equal to zero and the average molecular weight of said component (a) is less than or equal to 1,900 and if R2 varies, component (a) is a random copolymer;
• and
• in said component (b), at least one of said x or z is equal to one or said component (b) is a complex polyoxyethylene glyceride-containing compound having greater than 10 polyoxyethylene units;
• and
• up to about five percent by weight based on the spin finish composition of a component (c) of an ethyoxylated silicone;
• and
• C. drawing said yarn.