Patent US3898196A successfully refreshed from Google Patents.
US3898196A
Expired / Lapsed
US
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Copolyesters of fluorine containing aliphatic dicarboxylic acids
Assignee: Goodyear Tire and Rubber Co
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Filing: 1974-02-14
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Granted: 1975-08-05
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Expires: 1994-02-14
Abstract
Abstract Copolyesters of an aliphatic glycol, terephthalic acid and from about 1 to about 20 mol percent of a fluorinated aliphatic dicarboxylic acid. Fibers of the copolyesters have improved soil resistance and soil release properties.
Inventors
- 👤 Max H Keck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:21
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/682; C08G63/6824; C08G63/6826
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
76 words
A FIBER-FORMING COPOLYESTER OF UNITS OF A GLYCOL OF THE FORMULA HO(CH2)NOH IN WHICH N IS AN INTEGER OF FROM 2 TO 6 UNITS OF TERPHTHALIC ACID AND FROM 1 TO 20 MOL PERCENT OF THE TOTAL MOLS OF ACID UNITS IN THE COPOLYESTER OF UNITS OF A FLURINECONTAINING ALIPHATIC DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF PERFLUOROSUCCINIC ACID, HEXALFLUOROGLUTARIC ACID, OCTAILUROADIPIC ACID, DODECAFLUOROSUBERIC ACID, OCTADECAFLUOROUNDECANEDIOIC ACID, TETRACOSAFLUOROTETRADECANEDIOIC ACID, 3,5-DICHLORO-2,2,3,4,4,5,6,6-OCTAFLUROHEPTANEDIOIC ACID AND 3,5,7-TRICHLORO-2,2,3,4,4,5, 6,6,7,8,8-UNDECAFLUORONONANEDIOIC ACID.
Claim 2
Dependent Claim
76 words
A FIBER-FORMING COPOLYESTER OF UNITS OF A GLYCOL OF THE FORMULA HO(CH2)NOH IN WHICH N IS AN INTEGER OF FROM 2 TO 6 UNITS OF TERPHTHALIC ACID AND FROM 1 TO 20 MOL PERCENT OF THE TOTAL MOLS OF ACID UNITS IN THE COPOLYESTER OF UNITS OF A FLURINECONTAINING ALIPHATIC DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF PERFLUOROSUCCINIC ACID, HEXALFLUOROGLUTARIC ACID, OCTAILUROADIPIC ACID, DODECAFLUOROSUBERIC ACID, OCTADECAFLUOROUNDECANEDIOIC ACID, TETRACOSAFLUOROTETRADECANEDIOIC ACID, 3,5-DICHLORO-2,2,3,4,4,5,6,6-OCTAFLUROHEPTANEDIOIC ACID AND 3,5,7-TRICHLORO-2,2,3,4,4,5, 6,6,7,8,8-UNDECAFLUORONONANEDIOIC ACID.
Claim 3
Dependent Claim
46 words
A fiber-forming copolyester of ethylene glycol, terephthalic acid and a fluorine-containing acid selected from the group consisting of hexafluoroglutaric acid, octafluoroadipic acid, perfluorosuccinic acid and dodecafluorosuberic acid in which the terephthalic acid units comprise from 99 to 80 percent of the acid units in the copolyester.
Claim 4
Dependent Claim
46 words
A fiber-forming copolyester of ethylene glycol, terephthalic acid and a fluorine-containing acid selected from the group consisting of hexafluoroglutaric acid, octafluoroadipic acid, perfluorosuccinic acid and dodecafluorosuberic acid in which the terephthalic acid units comprise from 99 to 80 percent of the acid units in the copolyester.
Claim 5
Dependent Claim
45 words
An ethylene terephthalate-ethylene hexafluoroglutarate fiber-forming copolyester in which the ethylene terephthalate units comprise from 99 to 80 percent of the sum of ethylene terephthalate and ethylene hexafluoroglutarate units in the copolyester, and the ethylene hexafluoroglutarate units comprise from 1 to 20 percent of said sum.
Claim 6
Dependent Claim
45 words
An ethylene terephthalate-ethylene hexafluoroglutarate fiber-forming copolyester in which the ethylene terephthalate units comprise from 99 to 80 percent of the sum of ethylene terephthalate and ethylene hexafluoroglutarate units in the copolyester, and the ethylene hexafluoroglutarate units comprise from 1 to 20 percent of said sum.
Claim 7
Dependent Claim
46 words
An ethylene terephthalate-ethylene octafluoroadipate fiber-forming copolyester in which the ethylene terephthalate units comprise from 99 To 80 percent of the sum of the ethylene terephthalate and ethylene octafluoroadipate units in the copolyester, and the ethylene octafluoroadipate units comprise from 1 to 20 percent of said sum.
Claim 8
Dependent Claim
46 words
An ethylene terephthalate-ethylene octafluoroadipate fiber-forming copolyester in which the ethylene terephthalate units comprise from 99 To 80 percent of the sum of the ethylene terephthalate and ethylene octafluoroadipate units in the copolyester, and the ethylene octafluoroadipate units comprise from 1 to 20 percent of said sum.
Claim 9
Dependent Claim
12 words
A copolyester according to claim 1 in the form of a fiber.
Claim 10
Dependent Claim
15 words
A fabric having improved soil and stain resistance made of a fiber of claim 5.
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) | 1978-08-04 | 1979-02-03 | 1979-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-04 | 1983-02-03 | 1983-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-04 | 1987-02-03 | 1987-08-05 | $7700.00 | Window Closed / Lapsed |