US4497720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for treating metallic or ceramic surfaces at high temperatures
Assignee: Teijin Ltd
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Filing: 1983-08-26
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Granted: 1985-02-05
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Expires: 2003-08-26
Abstract
Abstract A novel method is provided for treating metallic or ceramic surfaces (hot plates, metallic molds and the like) at a high temperature of 200° C. or above, wherein organic treating agents (finishes, release agents and the like) will not form a tar or sludge. According to this method, the continuous operation can be conducted due to neither staining on the metallic surfaces nor stop of the machine for a heater cleaning. Examples of the organic treating agents to be used include a polyalkylene glycol thermally decomposable at 150° C. or above in air and a fluorine-containing compound, preferably the nonionic type, having a fluoroalkyl group in the molecule.
Inventors
- 👤 Hiroyuki Moriga
- 👤 Masao Uchida
- 👤 Koichi Iwashita
- 👤 Shuji Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:18
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/282; D06M13/292; B; B29; B29C; B29C33/00; B29C33/56; B29C33/60; C; C10; C10M; C10M169/00; C10M169/04; D02; D02G; D02G1/00; D02G1/02; D02G1/0206; D02G1/026; D02J; D02J13/00; D02J13/003; D06M13/10; D06M13/144; D06M13/148; D06M13/248; D06M13/256; D06M7/00; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/1033; C10M2209/104; C10M2209/1045; C10M2209/105; C10M2209/1055; C10M2209/106; C10M2209/1065; C10M2209/107; C10M2209/1075; C10M2209/108; C10M2209/1085; C10M2209/109; C10M2209/1095; C10M2211/00; C10M2211/04; C10M2211/044; C10M2211/06; C10M2213/00; C10M2213/02; C10M2213/04; C10M2213/06; C10M2213/062; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/08; C10M2215/082; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/042; C10M2219/044; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/049; C10M2223/10; C10M2225/00; C10M2225/02; C10N; C10N2040/00; C10N2040/20; D06M2200/00; D06M2200/40
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
309 words
A method for treating metallic or ceramic surfaces, which comprises applying a lubricating composition comprising 50% by weight or more of a polyalkylene glycol or derivative thereof thermally decomposable at 150° C. or above in air and 50% by weight or less of at least one fluorine containing compound selected from the group consisting of (b-1) nonionic fluorine-containing compounds having a fluoroalkyl group of 3 to 20 carbon atoms and a polyoxyalkylene chain, (b-2) compounds having a fluoroalkyl group of 3 to 20 carbon atoms and a residue of a carboxylic acid or a salt thereof with a metallic atom, ammonia or a nitrogen-containing amino compound capable of forming the salt with the carboxylic acid group in the molecule, (b-3) compounds having a fluoroalkyl group of 3 to 20 carbon atoms and a residue of phosphoric acid or a salt thereof with a metallic atom, ammonia or a nitrogen-containing amino compound capable of forming the salt with the phosphoric acid group in the molecule, (b-4) compounds having a fluoroalkyl group of 3 to 20 carbon atoms and a residue of sulfonic acid or a salt thereof with a metallic atom, ammonia or a nitrogen-containing amino compound capable of forming the salt with the sulfonic acid group in the molecule, (b-5) compounds having a fluoroalkyl groups of 3 to 20 carbon atoms and a cationic group containing a quaternary nitrogen atom in the molecule, and (b-6) compounds having a fluoroalkyl group of 3 to 20 carbon atoms and an amphoteric group in the molecule to the metallic or ceramic surfaces kept at 200° C. or above, and treating the metallic or ceramic surfaces while thermally decomposing the component positively on the metallic or ceramic surfaces and converting the lubricating composition into a slightly sticking and piling up sludge consisting of a complex of the formed decomposition product with the component.
Claim 2
Independent Claim
309 words
A method for treating metallic or ceramic surfaces, which comprises applying a lubricating composition comprising 50% by weight or more of a polyalkylene glycol or derivative thereof thermally decomposable at 150° C. or above in air and 50% by weight or less of at least one fluorine containing compound selected from the group consisting of (b-1) nonionic fluorine-containing compounds having a fluoroalkyl group of 3 to 20 carbon atoms and a polyoxyalkylene chain, (b-2) compounds having a fluoroalkyl group of 3 to 20 carbon atoms and a residue of a carboxylic acid or a salt thereof with a metallic atom, ammonia or a nitrogen-containing amino compound capable of forming the salt with the carboxylic acid group in the molecule, (b-3) compounds having a fluoroalkyl group of 3 to 20 carbon atoms and a residue of phosphoric acid or a salt thereof with a metallic atom, ammonia or a nitrogen-containing amino compound capable of forming the salt with the phosphoric acid group in the molecule, (b-4) compounds having a fluoroalkyl group of 3 to 20 carbon atoms and a residue of sulfonic acid or a salt thereof with a metallic atom, ammonia or a nitrogen-containing amino compound capable of forming the salt with the sulfonic acid group in the molecule, (b-5) compounds having a fluoroalkyl groups of 3 to 20 carbon atoms and a cationic group containing a quaternary nitrogen atom in the molecule, and (b-6) compounds having a fluoroalkyl group of 3 to 20 carbon atoms and an amphoteric group in the molecule to the metallic or ceramic surfaces kept at 200° C. or above, and treating the metallic or ceramic surfaces while thermally decomposing the component positively on the metallic or ceramic surfaces and converting the lubricating composition into a slightly sticking and piling up sludge consisting of a complex of the formed decomposition product with the component.
Claim 3
Dependent Claim
23 words
A method for treating the metallic or ceramic surfaces according to claim 1, wherein the content of the component is 15% or less.
Claim 4
Dependent Claim
256 words
A method according to claim 1, wherein said method comprises applying a lubricating composition comprising 99.9% by weight or less of the polyalkylene glycol or the derivative thereof thermally decomposable at 150° C. or above in air and 0.1% by weight or more of (b-1) a compound having a perfluoroalkyl group of 3 to 20 carbon atoms, a weight loss ratio of 20% or less at 200° C. at a heating rato of 10° C./min in air and a weight loss ratio of 40% or more on thermal decomposition at 200° C. for 24 hours in air and/or (b-2) an alkali metallic salt of a perfluoroalkylsulfonic acid or perfluoroalkylaromatic sulfonic acid, having at least one fluoroalkyl group of 3 to 20 carbon atoms, a weight loss ratio of 5.0% by weight or less at 300° C. at a heating rate of 10° C./min in air and a weight loss ratio of 10% by weight or less on thermal decomposition at 200° C. for 24 hours in air in an amount of 0.1% by weight or more and less than 0.5% by weight based on the weight of polyester multifilamentary yarns having a birefringence of 0.03 to 0.08 and an elongation of 30 to 250% to said multifilamentary yarns, bringing said treated yarns continuously into contact with a contacting body kept at a surface temperature of 215° C. or above at a yarn speed of 500 m/min or higher, and draw-false twist texturing the yarns while positively decomposing thermally the lubricating composition transferred to the contacting body.
Claim 5
Dependent Claim
18 words
A method according to claim 1, wherein the content of the component is 50% by weight or more.
Claim 6
Dependent Claim
143 words
A method according to claim 1, wherein the component (B-1) is a compound, having a fluoroalkyl group, and consisting of at least one selected from (i) nonionic compounds having at least one fluoroalkyl group of 3 to 20 carbon atoms and a polyoxyalkylene chain consisting of 2 to 4 carbon atoms in the same molecule, (ii) soap type compounds having said fluoroalkyl group and a salt of a carboxylic acid in the same molecule, (iii) compounds having said fluoroalkyl group and a salt of a phosphoric ester in the same molecule, (iv) compounds having said fluoroalkyl group and a salt of a sulfate or sulfonate in the same molecule, (v) cationic compounds having said fluoroalkyl group and a quaternary nitrogen atom in the same molecule, and (vi) amphoteric compounds having said fluoroalkyl group and both anionic and cationic groups in the same molecule.
Claim 7
Dependent Claim
45 words
A method according to claim 5, wherein the component (i) in an amount of 50% by weight or less based on the total lubricating composition is used together with at least one of the compounds (ii), (iii), (iv), (v) and (iv) in the lubricating composition.
Claim 8
Dependent Claim
36 words
A method according to claim 5, wherein the component (B-1) is the component (i) in an amount of 50% by weight or less based on the total lubricating composition and used together with the component (B-2).
Claim 9
Dependent Claim
18 words
A method according to claim 3 or 5, wherein said compounds having the fluoroalkyl group are water-soluble compounds.
Claim 10
Dependent Claim
23 words
A method according to claim 3, wherein the contacting body is a grooved heater at a surface temperature of 215° C. or above.
Claim 11
Dependent Claim
20 words
A method according to claim 3, wherein the oil pickup of said lubricating composition is 0.2 to 0.45% by weight.
Claim 12
Dependent Claim
15 words
A method according to claim 3, wherein the texturing speed is 600 m/min or higher.
Claim 13
Dependent Claim
25 words
A method according to claim 3, wherein the draw-false twist texturing is carried out with rotating disks or belts consisting of a ceramic or urethane.
Claim 14
Dependent Claim
16 words
A method according to claim 3, wherein the texturing is carried out by the in-draw method.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-05 | 1988-08-06 | 1989-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-05 | 1992-08-06 | 1993-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-05 | 1996-08-06 | 1997-02-05 | $7700.00 | Window Closed / Lapsed |