US3622590A
Expired / Lapsed
US
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Certain perfluoroalkyl polyoxyalkylene quaternary ammonium salts and derivatives thereof
Assignee: FMC Corp
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Filing: 1969-04-04
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Granted: 1971-11-23
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Expires: 1989-04-04
Abstract
Abstract Fluorinated halomethyl ethers and the quaternary salts thereof, which are useful as stain repellents, have the formulas: Rf(CH2)n(OR)mOCH2X and (Rf(CH2)n(OR)mOCH2A) X wherein Rf is perfluoroalkyl of four to 16 carbon atoms, R is alkylene of two to three carbon atoms, X is halogen of the group chlorine or bromine, A is the residue of a tertiary nitrogenous base, n is an integer of one to 12 and m is an integer of one to four.
Inventors
- 👤 John Thomas Gresham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:38
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; C07D213/20; D; D06; D06M; D06M13/00; D06M13/322; D06M13/325; D06M13/328; D06M13/33; D06M13/35; D06M13/372; D06M13/46
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
94 words
A compound of the formula (Rf(CH2)n(OR)mOCH2A) X wherein Rfis perfluoroalkyl of four to 16 carbon atoms, R is alkylene of two to three carbon atoms, X is halogen of the group chlorine or bromine, A is the residue of tertiary nitrogenous base, selected from the group consisting of trialkyl amines wherein the alkyl radical contains from one to 12 carbon atoms, tricyclohexyl amine, benzyldimethylamine, benzyl diethylamine, dibenzylethylamine, N, N-dimethylaniline, N,N-diethylaniline, N-methyl-N-ethyl aniline, N,N-diisopropylaniline, pyridine, picoline and lutidine, n is an integer of one to 12 and m is an integer of one to four.
Claim 2
Dependent Claim
10 words
A compound according to claim 2, and having the formula
Claim 3
Dependent Claim
9 words
A compound according to claim 2, and having the
Claim 4
Dependent Claim
10 words
A compound according to claim 2, and having the formula
Claim 5
Dependent Claim
10 words
A compound according to claim 2, and having the formula
Claim 6
Dependent Claim
10 words
A compound according to claim 2, and having the formula
Claim 7
Dependent Claim
10 words
A compound according to claim 2, and having the formula
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) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |