Diester composition and textile processing compositions therefrom

A method of making fabric or an article from a synthetic fiber or fabric comprising the steps of:

• (a) coating the fiber or fabric with 1-2% by weight of a knitting or weaving lubricant comprising 5-15 parts by weight of a cycloaliphatic diester of the formula ##STR10## wherein R is a substituted or unsubstituted straight or branched chain alkyl of 4-20 carbon atoms, polyoxyalkylene of the formula HO(CH.sub.2 CH.sub.2 O).sub.n CH.sub.2 CH.sub.2 --, HO(C.sub.3 H.sub.6 O).sub.n C.sub.3 H.sub.6 --, HO(CH.sub.2 CH.sub.2 O).sub.p (CH.sub.3 H.sub.6 O).sub.q C.sub.3 H.sub.6 -- or HO(C.sub.3 H.sub.6 O).sub.p ( C.sub.2 H.sub.4 O).sub.q C.sub.2 H.sub.4 -- or phosphated polyoxyalkylene, wherein n is 2-22 and the sum of p+q is n;
• 30-50 parts by weight of a high boiling aromatic ester of the formula ArCOO-R.sub.1 -OOCAr or ArCOOR.sub.2, wherein Ar is a monocyclic aryl of up to 10 carbon atoms;
• R.sub.1 is alkylene of 2-8 carbon atoms or polyoxyalkylene of the formula --C.sub.r H.sub.2r (O--C.sub.r H.sub.2r).sub.s -- in which r is 2 or 3 and s is up to 15;
• and R.sub.2 is alkyl or alkenyl of 8-30 carbon atoms;
• 5-15 parts by weight of dye-levelling agent of the formula R.sub.3 COOR.sub.4, wherein R.sub.4 is an ethoxylated alkylphenol residue of the formula ##STR11## a is 0-12 an db is 1-24 or an ethoxylated alkanol rsidue of the formula CH.sub.3 (CH.sub.2).sub.c --O--(CH.sub.2 CH.sub.2 O).sub.d CH.sub.2 CH.sub.2 --, c is 7-22 and d is 1-24, and wherein R.sub.3 is a linear or branched alkyl of 1-21 carbon atoms, phenyl or tolyl and 10-30 parts by weight of emulsifiers, dispersing agents and/or anti-static agents;
• (b) knitting or weaving the fiber into fabric or a knit article;
• and
• (c) dyeing the fabric or knit or woven article.

A method for lowering heat history characteristics and the degree of crystallinity of a synthetic fiber, lowering the temperature at which the fiber can be texturized and lowering the temperature at which the fiber absorbs dye comprising applying to the fiber to a pick-up of 0.4-0.75% by weight of a composition comprising cycloaliphatic diester of the formula ##STR12## wherein R is substituted or unsubstituted straight or branched chain alkyl of 4-20 carbon atoms, polyoxyalkylene of the formula HO(CH.sub.2 CH.sub.2 O).sub.n CH.sub.2 CH.sub.2 --, HO(CH.sub.3 H.sub.6 O).sub.n C.sub.3 H.sub.6 --, HO(CH.sub.2 CH.sub.2 O).sub.p (C.sub.3 H.sub.6).sub.q C.sub.3 H.sub.6 -- or HO(C.sub.3 H.sub.6 O).sub.p (C.sub.2 H.sub.4 O).sub.q C.sub.2 H.sub.4 -- or phosphated polyoxyalkylene, wherein n is 2-22 and the sum of p+q is n;

• and a high boiling aromatic ester of the formula ArCOO-R.sub.1 -OOCAr or ArCOOR.sub.2, wherein Ar is a monocyclic aryl of up to 10 carbon atoms;
• R.sub.1 is alkylene of 2-8 carbon atoms or polyoxyalkylene of the formula --C.sub.r H.sub.2r (O--C.sub.r H.sub.2r).sub.s in which r is 2 or 3 and s is up to 15;
• and R.sub.2 is alkyl or alkenyl of 8-30 carbon atoms;
• wherein the ratio of cycloaliphatic diester to high boiling aromatic ester is 0.1:1 to 10:1 and wherein the combination of cycloaliphatic diester and high boiling aromatic ester constitutes 10-90% by weight of the composition and texturing the thus-coated fiber at 180.degree.-230.degree. C., provided that, when R is unsubstituted straight or branched chain alkyl, the ratio of cycloaliphatic diester to high boiling aromatic ester is 2:1 to 10:1.

A method of treating a synthetic fiber comprising the steps of:

• (a) applying to the fiber to a pick-up of 0.4-0.75% by weight a spin finish composition comprising (1) a cycloaliphatic diester of the formula ##STR17## wherein R is substituted or unsubstituted straight or branched chain alkyl of 4-20 carbon atoms, polyoxyalkylene of the formula HO(CH.sub.2 CH.sub.2 O).sub.n CH.sub.2 CH.sub.2 --, HO(C.sub.3 H.sub.6 O).sub.n C.sub.3 H.sub.6 --, HO(CH.sub.2 CH.sub.2 O).sub.p (C.sub.3 H.sub.6 O).sub.q C.sub.3 H.sub.6 -- or HO(C.sub.3 H.sub.6 O).sub.p (C.sub.2 H.sub.4 O).sub.q C.sub.2 H.sub.4 -- or phosphated polyoxyalkylene, wherein n is 2-22 and the sum of p+q is n;
• (2) a high boiling aromatic ester of the formula ArCOO-R.sub.1 -OOCAr or ArCOOR.sub.2, wherein Ar is a monocyclic aryl of up to 10 carbon atoms;
• R.sub.1 is alkylene of 2-8 carbon atoms or polyoxyalkylene of the formula --C.sub.r H.sub.2r (O-C.sub.r H.sub.2r).sub.s in which r is 2 or 3 and s is up to 15;
• and R.sub.2 is alkyl or alkenyl of 8-30 carbon atoms;
• and (3) a dye-levelling agent of the formula R.sub.3 COOR.sub.4, wherein R.sub.4 is an ethoxylated alkylphenol residue of the formula ##STR18## a is 0-12 and b is 1-24 or an ethoxylated alkanol residue of the formula CH.sub.3 (CH.sub.3).sub.c -O-(CH.sub.2 CH.sub.2 O).sub.d CH.sub.2 CH.sub.2, c is 7-22 and d is 1-24 and wherein R.sub.3 is linear or branched alkyl of 1-21 carbon atoms, phenyl or tolyl;
• (b) texturing the thus-coated synthetic fiber at 180.degree.-230.degree. C.;
• (c) knitting or weaving the resulting textured fiber into fabric or knitting the textured fiber into a knit article;
• and
• (d) dyeing the fabric or knit article.

A method for lowering heat history characteristics and the degree of crystallinity of a synthetic fiber, lowering the temperature at which the fiber can be texturized, and lowering the temperature at which the fiber absorbs dye, comprising applying to the fiber to a pick-up of 0.4-0.75% by weight a composition comprising a cycloaliphatic diester of the formula ##STR19## wherein R is substituted or unsubstituted straight or branched chain alkyl of 4-20 carbon atoms, polyoxyalkylene of the formula HO(CH.sub.2 CH.sub.2 O).sub.n CH.sub.2 CH.sub.2 --, HO(C.sub.3 H.sub.6 O).sub.n C.sub.3 H.sub.6 --, HO(CH.sub.2 CH.sub.2 O).sub.p (C.sub.3 H.sub.6 O).sub.q C.sub.3 H.sub.6 -- or HO(C.sub.3 H.sub.6 O).sub.p --(C.sub.2 H.sub.4 O).sub.q C.sub.2 H.sub.4 -- or phosphated polyoxyalkylene, wherein n is 2-22 and the sum of p+q is n;

• and a high boiling aromatic ester of the formula ArCOO-R.sub.1 -OOCAr or ArCOOR.sub.2, wherein Ar is a substituted or unsubstituted monocyclic aryl;
• R.sub.1 is alkylene of 2-8 carbon atoms or polyoxyalkylene of the formula --C.sub.r H.sub.2r (O-C.sub.r H.sub.2r).sub.s in which r is 2 or 3 and s is up to 15;
• and R.sub.2 is alkyl or alkenyl of 8-30 carbon atoms;
• wherein the ratio of cycloaliphatic diester to high boiling aromatic ester is 0.1:1 to 10:1 and wherein the combination of cycloaliphatic diester and high boiling aromatic ester constitutes 10-90% by weight of the composition.