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US 4,252,528 AGranted
Lubricant compositions for finishing synthetic fibers
AssigneeUnion Carbide Corporation
InventorsQuintin W. Decker, Erich Marcus, Harvey S. Koenig
Life of this patent
Estimating the term…
Abstract
A spin finish for synthetic fibers has been developed consisting essentially of a thermally stable lubricant and a surfactant derived from an ethylene oxide/propylene oxide block co-polymer adduct of an alkylated phenol.
Claims19
A spin finish for synthetic fibers consisting essentially of:
- (a) about 50-90% by weight of a thermally stable lubricant selected from the group consisting of (1) esters of fatty acids having about 12 to 18 carbons and saturated aliphatic alcohols having about 8 to 18 carbons;
- (2) triglycerides of fatty acids having 12 to 18 carbons;
- (3) esters of a polyhydric alcohol and an alkanoic acid having about 8 to 12 carbons where the polyhydric alcohol has the formula
- (R).sub.y --C--(CH.sub.2 OH).sub.x
- where x is an integer having values of 3 or 4, R is an alkyl having 1 to 3 carbons, y is an integer having values of 0 or 1 and y=0 when x=4;
- and (4) esters if dibasic fatty acids having 2 to 18 carbons and saturated aliphatic alcohols having about 4 to 18 carbons;
- and
- (b) an emulsification effective surfactant having the formula ##STR3## wherein R' is an alkyl having 6 to 14 carbons,
- A is ##STR4## B is --CH.sub.2 CH.sub.2 O--, a and b are integers having values of about 6 to 16 and 4 to 12, respectively.
6 more elements
Methods of lubricating synthetic yarns which comprises contacting said synthetic yarns with an aqueous emulsion containing about 5 to about 20% based on the weight of the total solution of a spin finish consisting essentially of:
- (a) About 50-90% by weight of a thermally stable lubricant selected from the group consisting of (1) esters of fatty acids having about 12 to 18 carbons and saturated aliphatic alcohols having about 8 to 18 carbons;
- (2) triglycerides of fatty acids having 12 to 18 carbons;
- (3) esters of a polyhydric alcohol and an alkanoic acid having about 8 to 12 carbons where the polyhydric alcohol has the formula
- (R).sub.y --C--(CH.sub.2 OH).sub.x
- wherein x is an integer having values of 3 or 4, R is an alkyl having 1 to 3 carbons, y is an integer having values of 0 or 1 and y=0 when x=4;
- and (4) esters of dibasic fatty acids having 2 to 18 carbons and saturated aliphatic alcohols having about 4 to 18 carbons;
- (b) About 10-50% by weight of an emulsification effective surfactant having the formula ##STR5## wherein R' is an alkyl having 6 to 14 carbons,
- A is ##STR6## B is --CH.sub.2 CH.sub.2 O--, a and b are integers having values of about 6 to 16 and 4 to 12, respectively.
5 more elements
Dependencies are inferred from the claim text.