US5151535A
Expired / Lapsed
US
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Fluorine-containing α,β-bifunctional compounds and process for their production
Assignee: Sagami Chemical Research Institute
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Filing: 1990-01-31
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Granted: 1992-09-29
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Expires: 2010-01-31
Abstract
Abstract A fluorine-containing α,ω-bifunctional compound having the formula: ##STR1## wherein each of R 1 and R 2 independently is a hydrogen atom, an alkyl group or an aralkyl group; X is --COOH, --COOR 3 , --COY or --NCO, wherein R 3 is an alkyl group or an aralkyl group and Y is a halogen atom or N 3 ; and n is an integer of at least 1 provided that when X is --COOH, n is an integer of at least 4.
Inventors
- 👤 Takamasa Fuchikami
- 👤 Hisao Urata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:22
CPC Classifications
C; C07; C07C; C07C55/00; C07C55/32; C07C233/00; C07C233/01; C07C233/02; C07C233/04; C07C233/05; C07C247/00; C07C247/20; C07C247/22; C07C265/00; C07C265/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A fluorine-containing α,ω-bifunctional compound having the formula: ##STR34## wherein each of R 1 and R 2 independently is an alkyl group having 1 to 10 carbon atoms or an aralkyl group having 7 to 10 carbon atoms; X is --COOH, --COOR 3 or --COY, wherein R 3 is an alkyl group having 1 to 5 carbon atoms and Y is a halogen atom; and n is an integer of at least 1.
Claim 2
Dependent Claim
72 words
A fluorine-containing α,ω-bifunctional compound having the formula: ##STR34## wherein each of R 1 and R 2 independently is an alkyl group having 1 to 10 carbon atoms or an aralkyl group having 7 to 10 carbon atoms; X is --COOH, --COOR 3 or --COY, wherein R 3 is an alkyl group having 1 to 5 carbon atoms and Y is a halogen atom; and n is an integer of at least 1.
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) | 1995-09-29 | 1996-03-30 | 1996-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-29 | 2000-03-30 | 2000-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-29 | 2004-03-30 | 2004-09-29 | $7700.00 | Window Closed / Lapsed |