Patent US4340749A successfully refreshed from Google Patents.
US4340749A
Expired / Lapsed
US
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Carpet treatment
Assignee: 3M Co
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Filing: 1980-12-08
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Granted: 1982-07-20
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Expires: 2000-12-08
Abstract
Abstract An ester of a fluoroaliphatic radical- and aliphatic chlorine-containing alcohol and a mono or polycarboxylic acid useful in carpet treatment.
Inventors
- 👤 Kalyanji U. Patel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:55
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564; D06M15/576; D06M13/00; D06M13/10; D06M13/184; D06M13/207; D06M13/21
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
103 words
An ester of a fluoroaliphatic radical- and aliphatic chlorine-containing alcohol and a mono- or polycarboxylic acid, said alcohol having the formula ##STR8## where R f is a fluoroaliphatic radical, Q is a divalent linking group free of epoxy-reactive and isocyanate-reactive protons, R 1 is hydrogen or lower alkyl, R 2 is hydrogen, lower alkyl, or aryl of 6 to 12 carbons, m is zero or 1, and p is an integer of 1-5 said alcohol having more than 25 weight % carbon-bonded fluorine in the form of said fluoroaliphatic radical, said ester having at least one major transition temperature greater than 25° C.
Claim 2
Dependent Claim
103 words
An ester of a fluoroaliphatic radical- and aliphatic chlorine-containing alcohol and a mono- or polycarboxylic acid, said alcohol having the formula ##STR8## where R f is a fluoroaliphatic radical, Q is a divalent linking group free of epoxy-reactive and isocyanate-reactive protons, R 1 is hydrogen or lower alkyl, R 2 is hydrogen, lower alkyl, or aryl of 6 to 12 carbons, m is zero or 1, and p is an integer of 1-5 said alcohol having more than 25 weight % carbon-bonded fluorine in the form of said fluoroaliphatic radical, said ester having at least one major transition temperature greater than 25° C.
Claim 3
Dependent Claim
12 words
An ester according to claim 1, wherein said acid is citric acid.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-07-19 | 1986-01-18 | 1986-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-19 | 1990-01-18 | 1990-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-19 | 1994-01-18 | 1994-07-20 | $7700.00 | Window Closed / Lapsed |