Lubricant impregnated fibers and processes for preparation thereof
AssigneeEastman Chemical Company
InventorsRichard D. Neal, Shriram Bagrodia, Lewis C. Trent, Mark A. Pollock
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Abstract
Fibers such as caustic-treated non-round polyester fibers are prepared having certain lubricants strongly adhered to the surfaces thereof. These fibers are prepared by contacting the fibers, such as immediately prior to a crimping means, with a suitable heated hydrophilic lubricant in a processing operation followed by heating to dry or "bake" the lubricant onto and/or into the surface of the fibers.
Claims19
An article of manufacture comprising fibers having a denier per filament of about 0.8 to 200 selected from fibers of the group consisting of polyester fibers, polyolefin fibers, polyphenylene sulfide fibers, cellulose acetate fibers, modacrylic fibers, nylon fibers, viscose rayon fibers, cotton fibers, and fiber blends thereof having about 0.1 wt. % or more of a lubricant comprising a mixture of high and low molecular weight polyethylene glycol fatty acid esters on the surfaces of the fibers, wherein said lubricant contains a high molecular weight polyethylene glycol fatty acid ester that has a molecular weight in the polyethylene glycol portion above 500 and a low molecular weight polyethylene glycol fatty acid ester that has a molecular weight in the polyethylene glycol portion below 500.
An article of manufacture comprising fibers having a denier per filament of 0.8 to 200 (0.89 to 222 decitex) selected from fibers of the group consisting of polyester fibers, cellulose acetate fibers, modacrylic fibers, nylon fibers, polyolefin fibers, polyphenylene sulfide fibers, viscose rayon fibers, cotton fibers, and blends thereof, having 0.1 wt. % or more of a lubricant comprising at least one polyethylene glycol monolaurate or monostearate having a sorbitan group on the surfaces of the fibers.
Dependencies are inferred from the claim text.