Patent US4097642A successfully refreshed from Google Patents.
US4097642A
Expired / Lapsed
US
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Fabric coated with RF-glycols containing two perfluoroalkylthio groups
Assignee: Novartis Corp
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Filing: 1977-05-19
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Granted: 1978-06-27
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Expires: 1997-05-19
Abstract
Abstract Perfluoroalkylthio glycols and esters thereof can be prepared by the free-radical catalyzed addition of a perfluoroalkylthiol to an acetylenic alcohol or ester thereof. The compounds obtained are useful intermediates for the synthesis of fluorochemicals with low free surface energies having oil and water repellent properties. In one embodiment, a perfluoroalkylthio glycol can be reacted with a diisocyanate to obtain a polyurethane containing perfluoroalkylthio groups, which polyurethanes are useful as coatings to provide oil and water repellance to textiles and as additives to plastics to provide mold-release and other desirable properties.
Inventors
- 👤 Robert Ernest Arthur Dear
- 👤 Robert Allan Falk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:50
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3855; C08G18/3863; C08G18/3865; C08G18/3868; C08G18/387; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T442/00; Y10T442/20; Y10T442/2164; Y10T442/2172
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
180 words
A textile substrate bearing from 0.01 to 10% by weight of a urethane composition which contains at least one unit of formula ##STR48## where R f is perfluoroalkyl of 1 to 18 carbon atoms or said perfluoroalkyl substituted by perfluoroalkoxy of 2 to 6 carbon atoms, R 1 is branched or straight chain alkylene of 1 to 12 carbon atoms, alkylenethioalkylene of 2 to 12 carbon atoms, alkyleneoxyalkylene of 2 to 12 carbon atoms, or alkyleneiminoalkylene of 2 to 12 carbon atoms where the nitrogen atom contains as a third substituent, hydrogen or alkyl of 1 to 6 carbon atoms, R 2 and R 3 each independently is straight or branched chain alkylene of 1 to 12 carbon atoms; straight or branched chain alkylene of 1 to 12 carbon atoms substituted by one or two of phenyl or cyclohexyl; of R 2 and R 3 are a group of the formula C.sub.m H.sub.2m (OC.sub.k H.sub.2k)r where m is an integer from 1 to 12, k is an integer from 2 to 6, r is an integer from 1 to 40.
Claim 2
Dependent Claim
180 words
A textile substrate bearing from 0.01 to 10% by weight of a urethane composition which contains at least one unit of formula ##STR48## where R f is perfluoroalkyl of 1 to 18 carbon atoms or said perfluoroalkyl substituted by perfluoroalkoxy of 2 to 6 carbon atoms, R 1 is branched or straight chain alkylene of 1 to 12 carbon atoms, alkylenethioalkylene of 2 to 12 carbon atoms, alkyleneoxyalkylene of 2 to 12 carbon atoms, or alkyleneiminoalkylene of 2 to 12 carbon atoms where the nitrogen atom contains as a third substituent, hydrogen or alkyl of 1 to 6 carbon atoms, R 2 and R 3 each independently is straight or branched chain alkylene of 1 to 12 carbon atoms; straight or branched chain alkylene of 1 to 12 carbon atoms substituted by one or two of phenyl or cyclohexyl; of R 2 and R 3 are a group of the formula C.sub.m H.sub.2m (OC.sub.k H.sub.2k)r where m is an integer from 1 to 12, k is an integer from 2 to 6, r is an integer from 1 to 40.
Claim 3
Independent Claim
169 words
A method for rendering a substrate repellent to water and oil which comprises applying thereto an effective amount of a urethane composition which contains at least one unit of formula ##STR49## where R f is perfluoroalkyl of 1 to 18 carbon atoms or said perfluoroalkyl substituted by perfluoroalkoxy of 2 to 6 carbon atoms, R 1 is branched or straight chain alkylene of 1 to 12 carbon atoms, alkylenethioalkylene of 2 to 12 carbon atoms, alkyleneoxyalkylene of 2 to 12 carbon atoms, or alkyleneiminoalkylene of 2 to 12 carbon atoms where the nitrogen atom contains as a third substituent, hydrogen chain alkylene of 1 to 12 carbon atoms; straight or branched chain alkylene of 1 to 12 carbon atoms substituted by one or two of phenyl or cyclohexyl; or R 2 and R 3 are a group of the formula C.sub.m H.sub.2m (OC.sub.k H.sub.2k).sub.r where m is an integer from 1 to 12, k is an integer from 2 to 6, r is an integer from 1 to 40.
Claim 4
Independent Claim
169 words
A method for rendering a substrate repellent to water and oil which comprises applying thereto an effective amount of a urethane composition which contains at least one unit of formula ##STR49## where R f is perfluoroalkyl of 1 to 18 carbon atoms or said perfluoroalkyl substituted by perfluoroalkoxy of 2 to 6 carbon atoms, R 1 is branched or straight chain alkylene of 1 to 12 carbon atoms, alkylenethioalkylene of 2 to 12 carbon atoms, alkyleneoxyalkylene of 2 to 12 carbon atoms, or alkyleneiminoalkylene of 2 to 12 carbon atoms where the nitrogen atom contains as a third substituent, hydrogen chain alkylene of 1 to 12 carbon atoms; straight or branched chain alkylene of 1 to 12 carbon atoms substituted by one or two of phenyl or cyclohexyl; or R 2 and R 3 are a group of the formula C.sub.m H.sub.2m (OC.sub.k H.sub.2k).sub.r where m is an integer from 1 to 12, k is an integer from 2 to 6, r is an integer from 1 to 40.
Claim 5
Dependent Claim
21 words
A method according to claim 2, which comprises applying from 0.01 to 10% of the weight of substrate of urethane composition.
Claim 6
Dependent Claim
124 words
A method according to claim 3, in which R f is perfluoroalkyl of 6 to 12 carbon atoms or said perfluoroalkyl substituted by perfluoroalkoxy of 2 to 6 carbon atoms, R 1 is branched or straight chain alkylene of 2 to 8 carbon atoms, alkylenethioalkylene of 2 to 8 carbon atoms, alkyleneoxyalkylene of 2 to 8 carbon atoms or alkyleneiminoalkylene of 2 to 8 carbon atoms and where the nitrogen atom contains hydrogen or methyl as a third substituent; R 2 and R 3 are each independently straight or branched chain alkylene of 1 to 4 carbon atoms or a group of formula C.sub.m H.sub.2m (OC.sub.k H.sub.2k).sub.r where k is an integer from 1 to 4, r is an integer from 1 to 20.
Claim 7
Dependent Claim
42 words
A method according to claim 4 in which R f is perfluoroalkyl of 6 to 12 carbon atoms, R 1 is alkylene of 2 to 4 carbon atoms, R 2 and R 3 are both alkylene of 1 or 2 carbon atoms.
References Cited (Backward Citations)
US4054592A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |