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1. (WO1993002247) FIBRES IMPREGNEES DE LUBRIFIANT ET PROCEDE DE PREPARATION
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

CLAIMS
1. A process for treating fibers comprising:
(A) contacting fibers in a tow band with a
free flowing solution containing 5 weight
percent or more of a substantially non- tacky antistatic hydrophilic lubricant at
a temperature between 40βC and the boiling
point of the solution;
(B) spreading said solution into said tow band
to substantially coat all surfaces of said
fibers; and
(C) heating said fibers at a temperature of
40βC or more for a sufficient time to dry
the lubricant-coated fibers.
2. The process according to Claim 1 wherein said lubricant comprises a major portion of at least one compound selected from the group consisting of polyoxyethylene fatty acid esters, polyethylene glycol fatty acid esters, and fatty acid glycerides.
3. The process according to Claim 2 wherein said lubricant also contains a minor portion of at least one compound selected from antistatic agents and cross—linking agents.
4. The process according to Claim 3 wherein said lubricant contains a minor portion of at least one antistatic agent selected from the group consisting of quaternary amine salts, salts of polyoxyethylene and organic fatty alcohol esters, ethosulfate salts of quaternary ammonium compounds and acid salts of quaternary ammonium compounds.
5. The process according to Claim 1 wherein said solution is an aqueous solution containing 10 wt. % or more of said lubricant and said fibers are contacted therewith at a temperature between 50 and 100°C; said spreading in Step B is produced by mechanical pressure means; and said heating in Step B is conducted at a temperature between 50 and 135°C for at least 20 seconds.
6. The process according to Claim 1 wherein said fibers are selected from the group consisting of polyester, cellulose acetate, modacrylic, nylon, viscose rayon, and blends or mixtures thereof; have at least one axial groove; and are in the form of a tow of at least 10,000 total denier (11,111 total decitex).
7. The process according to Claim 1 wherein said fibers provided to Step A are caustic-treated fibers that have between 2 and 30 axial grooves which are substantially continuous and said fibers are contacted with said solution using at least one continuous flow means above said fibers and at least one continuous flow means below said fibers said continous flow means positioned to avoid dry contact with said fibers.
8. The process according to Claim 1 wherein said fibers provided to Step A are substantially dry caustic-treated fibers that have at least one axial groove.
9. The process according to Claim 1 wherein said fibers are non—round hydrolyzed polyester fibers having a denier per filament of 0.8 to 200 (0.89 to 222 decitex) and said lubricant is an aqueous solution containing at least 10 wt. % of a mixture of high and low molecular weight
polyethylene glycol fatty acid esters.

SUBSTITUTE SHEET

10. A processing lubricant composition comprising mixture of high and low molecular weight polyethylene glycol fatty acid esters.
11. The composition according to Claim 10 wherein said mixture contains a minor amount of an antistatic agent.
12. The composition according to Claim 11 wherein said antistatic agent is a salt of a quaternary ammonium compound.
13. The composition according to Claim 12 wherein said antistatic agent is 4-ethyl, 4-cetyl, morpholinium ethosulfate.
14. The composition according to Claim 10 wherein the low molecular weight polyethylene glycol fatty acid ester is polyethylene glycol 400 monolaurate and the high molecular weight polyethylene glycol fatty acid ester is polyethylene glycol 600 monolaurate.
15. The composition according to Claim 14 wherein said mixture contains at least 40 weight % polyethylene glycol 400 monolaurate, at least 40 weight % polyethylene glycol 600 monolaurate, and up to 10 weight % 4-ethyl, 4— cetyl, morpholinium ethosulfate.
16. The composition of Claim 15 wherein the
composition is in an aqueous solution.
17. A processing lubricant composition comprising a mixture of a suitable antistatic agent and at least one polyethylene glycol monolaurate or monostearate having a sorbitan group.
18. The composition according to Claim 17 wherein said mixture contains a minor portion of said suitable antistatic agent and a major portion of a lubricant selected from polyethylene glycol 880 sorbitan monolaurate,
polyethylene glycol 880 sorbitan monostearate and mixtures thereof.

19. An article of manufacture comprising fibers having a denier per filament of 0.8 to 200 (0.89 to 222 decitex) selected from the group consisting of polyesters, cellulose acetate, modacryclic, nylon, and viscose rayon, having 0.3 wt. % or more of the lubricant from Claim 10 baked onto their surfaces.
20. An article of manufacture comprising binder fibers having 0.3 wt. % or more of the lubricant from Claim 17 baked onto their surfaces.