Patent US3893984A successfully refreshed from Google Patents.
US3893984A
Expired / Lapsed
US
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Fluorine and sulfur-containing compositions
Assignee: Pennwalt Corp
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Filing: 1974-04-08
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Granted: 1975-07-08
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Expires: 1994-04-08
Abstract
Abstract Polymers of methacrylic acid esters and acrylic acid esters of twin-tailed alochol of the structure (Rf(CH2)nSCH2)2CHOH wherein Rf is a specified perfluoroalkyl group, are disclosed herein. These polymers are useful to provide oil and water repellent properties for textiles and paper.
Inventors
- 👤 Robert Bonner Hager
- 👤 Sameeh Said Toukan
- 👤 Gerald Joseph Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:34
CPC Classifications
C; C07; C07D; C07D203/00; C07D203/04; C07D203/06; C07D203/08; C07C; C07C323/00; C07C323/23; C07C323/24; C07C323/25; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/091; C07F9/14; C07F9/547; C07F9/553; C07F9/564; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/38; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/2805; C08G18/288; C08G18/2885; C08G18/30; C08G18/38; C08G18/3855; C08G18/3863; C08G18/3865; C08G18/3868; C08G18/387; C08G63/00; C08G63/68; C08G63/688; C08G63/6884; D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/277; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/09; D21H17/11
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
59 words
A POLYMER CONSISTING ESSENTIALLY OF POLYMERIZED UNITS OF AN ESTER SELECTED FROM THE CLASS CONSISTING OF THE METHACRYLIC ACID ESTERS AND THE ACRYLIC ACID ESTERS OF A TWIN-TAILED ALCOHOL OF THE STRUCTURE: (R$(CH2)NSCH2)2CHOH WHERE N IS 1-12 AND RF IS SELECTED FROM THE GROUP CONSISTING OF CF3(CF2)Y, (CF3)2CF(CH)W AND (CH3)2CFO(CF2) WHERE Y IS AN INTEGER OF 1 TO 14.
Claim 2
Dependent Claim
59 words
A POLYMER CONSISTING ESSENTIALLY OF POLYMERIZED UNITS OF AN ESTER SELECTED FROM THE CLASS CONSISTING OF THE METHACRYLIC ACID ESTERS AND THE ACRYLIC ACID ESTERS OF A TWIN-TAILED ALCOHOL OF THE STRUCTURE: (R$(CH2)NSCH2)2CHOH WHERE N IS 1-12 AND RF IS SELECTED FROM THE GROUP CONSISTING OF CF3(CF2)Y, (CF3)2CF(CH)W AND (CH3)2CFO(CF2) WHERE Y IS AN INTEGER OF 1 TO 14.
Claim 3
Dependent Claim
10 words
A polymer according to claim 1 wherein n is 2.
Claim 4
Dependent Claim
10 words
A polymer according to claim 2 wherein Rf is perfluoroalkyl.
Claim 5
Dependent Claim
10 words
A polymer according to claim 3 wherein n is 2.
Claim 6
Dependent Claim
10 words
A polymer according to claim 4 wherein Rf is (CF3)2CF(CF2)6.
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) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |