Patent US4020087A successfully refreshed from Google Patents.
US4020087A
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US
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N-imidazolidinone perfluoroalkylcarboxylic acid ester
Assignee: Novartis Corp
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Filing: 1976-03-03
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Granted: 1977-04-26
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Expires: 1996-03-03
Abstract
Abstract The present invention provides new perfluoroalkylcarboxylic acid esters of the formula ##STR1## WHEREIN R f is perfluoroalkyl with 4 to 18 carbon atoms, A represents a radical forming with the --NCO--N-group ethylene urea, hydantoin or isocyanurate radicals, m is a whole number from 1 to 3, q is 1 or 2 and x is 0, 1 or 2, with x being 0 or 1 if m is 1. The new compounds are useful for producing oil- and water-repellent finishes on porous and non-porous finishes, such as paper, textiles or plastics.
Inventors
- 👤 Armin Hiestand
- 👤 Horst Jager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:01
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/35; D06M13/355; D06M13/358
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
76 words
A perfluoroalkylcarboxylic acid ester of the formula ##STR42## wherein R f represents a perfluoroalkyl radical with 4 to 18 carbon atoms, A represents a radical of the formula ##STR43## wherein R 1 and R 2 represent hydrogen or methyl, B is [--O--] or [--OH Cl--], m is a whole number from 1 to 3, q is 1 or 2 and x is 0, 1 or 2, with x being 0 or 1 if m is 1.
Claim 2
Dependent Claim
76 words
A perfluoroalkylcarboxylic acid ester of the formula ##STR42## wherein R f represents a perfluoroalkyl radical with 4 to 18 carbon atoms, A represents a radical of the formula ##STR43## wherein R 1 and R 2 represent hydrogen or methyl, B is [--O--] or [--OH Cl--], m is a whole number from 1 to 3, q is 1 or 2 and x is 0, 1 or 2, with x being 0 or 1 if m is 1.
Claim 3
Dependent Claim
74 words
A perfluoroalkylcarboxylic acid ester according to claim 1, of the formula ##STR44## wherein R f represents a perfluoroalkyl radical with 4 to 18 carbon atoms, A represents a radical of the formula ##STR45## wherein R 1 and R 2 represent hydrogen or methyl, m is a whole number from 1 to 3, x is 0, 1 or 2, with x being 0 or 1 if m is 1, and q' is 1 or 2.
Claim 4
Dependent Claim
19 words
A perfluoroalkylcarboxylic acid ester according to claim 1, wherein the perfluoroalkyl radical contains from 4 to 14 carbon atoms.
Claim 5
Dependent Claim
63 words
A perfluoroalkylcarboxylic acid ester according to claim 2, of the formula ##STR46## wherein R 1 and R 2 represent hydrogen or methyl, n is a whole number from 4 to 14, m is a whole number from 1 to 3, q' is 1 or 2 and x is 0, 1 or 2, with x being 0, 1 or 2 if m is 1.
Claim 6
Dependent Claim
48 words
A perfluoroalkylcarboxylic acid ester according to claim 4, of the formula ##STR47## wherein n 1 is a whole number from 6 to 12, q and t are each 1 or 2 and x is 0, 1 or 2, with x being 0 or 1 if t is 1.
Claim 7
Dependent Claim
47 words
A perfluoroalkylcarboxylic acid ester according to claim 4, of the formula ##STR48## wherein n 1 is a whole number from 6 to 12, q' and t are 1 or 2, and x is 0, 1 or 2, with x being 0 or 1 if t is 1.
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) | 1980-04-25 | 1980-10-25 | 1981-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-25 | 1984-10-25 | 1985-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-25 | 1988-10-25 | 1989-04-26 | $7700.00 | Window Closed / Lapsed |