Patent US4834708A successfully refreshed from Google Patents.
Patent US4158672A successfully refreshed from Google Patents.
US4158672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyfluoroalkylthio alcohols, esters and useful compositions therefrom
Assignee: BASF Corp
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Filing: 1977-12-23
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Granted: 1979-06-19
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Expires: 1997-12-23
Abstract
Abstract Polyfluoroalkylthio alcohols and esters thereof are disclosed with utility as intermediates for the synthesis of fluorochemicals with low free surface energies having oil and water repellent properties. The novel alcohols and esters are obtained by a free radical catalyzed addition of polyfluoroalkylthiols to acetylenic alcohols or esters thereof. The alcohols are employed in preparation of fluorine containing polyurethanes which are useful as finishes to provide oil and water repellency to textiles and as additives to plastics to provide mold release and other desirable properties.
Inventors
- 👤 Robert E. A. Dear
- 👤 Neal O. Brace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:55
CPC Classifications
C; C07; C07C; C07C323/00; C07C323/23; C07C323/24; C07C323/25; 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; D06M13/00; D06M13/322; D06M13/402; D06M13/425; D06M13/428; D06M15/00; D06M15/19; D06M15/37; D06M15/564; D06M15/576
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
145 words
A compound of the structure ##STR43## wherein R f is C p F 2p+1 or C q F 2q OC p F 2p+1 , where p is to 12, and q is 2 to 8; R 1 is C n H 2n , C n H 2n SC n H 2n , C n H 2n OC n H 2n or C n H 2n NR 5 C n H 2n , where n is 1 to 12 and R 5 is H or alkyl with 1 to 6 carbons; R 3 is H or C n H 2n+1 where n is 1 to 12; R 2 is C m H 2m or C m H 2m (OC k H 2k ) r where m is 0 to 12, k is 2 to 6 and r is 1 to 30; and R 4 is H.
Claim 2
Dependent Claim
145 words
A compound of the structure ##STR43## wherein R f is C p F 2p+1 or C q F 2q OC p F 2p+1 , where p is to 12, and q is 2 to 8; R 1 is C n H 2n , C n H 2n SC n H 2n , C n H 2n OC n H 2n or C n H 2n NR 5 C n H 2n , where n is 1 to 12 and R 5 is H or alkyl with 1 to 6 carbons; R 3 is H or C n H 2n+1 where n is 1 to 12; R 2 is C m H 2m or C m H 2m (OC k H 2k ) r where m is 0 to 12, k is 2 to 6 and r is 1 to 30; and R 4 is H.
Claim 3
Dependent Claim
25 words
A compound of claim 1, wherein R 1 is --CH 2 CH 2 --, R 2 is --CH 2 -- and R 3 is hydrogen.
Claim 4
Dependent Claim
24 words
A compound of claim 1, wherein R f is a group of formula C p F 2p+1 , where p is 6 to 12.
Claim 5
Dependent Claim
25 words
A compound of claim 2, wherein R f is a straight-chain group of formula C p F 2p+1 , wherein p is 6 to 12.
Claim 6
Dependent Claim
9 words
A compound of claim 4, wherein p is 6.
Claim 7
Dependent Claim
9 words
A compound of claim 4, wherein p is 8.
Claim 8
Dependent Claim
9 words
A compound of claim 4, wherein p is 10.
Claim 9
Dependent Claim
37 words
A compound of claim 1, wherein R 2 is C m H 2m (OC k H 2k ) r , where m is 0 to 12, k is 2 to 6 and r is 5 to 30.
Claim 10
Dependent Claim
13 words
A compound of claim 3, wherein R f is a straight chain group.
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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) | 1982-06-18 | 1982-12-18 | 1983-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-18 | 1986-12-18 | 1987-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-18 | 1990-12-18 | 1991-06-19 | $7700.00 | Window Closed / Lapsed |