US4460785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acid chloride of pyromellitic anhydride
Assignee: Honeywell International Inc
•
Filing: 1982-09-30
•
Granted: 1984-07-17
•
Expires: 2002-09-30
Abstract
Abstract Pyromellitate diester-diacid chlorides are disclosed that are useful as intermediates in the synthesis of a variety of soil and water repelling compounds. The pyromellitates of this invention characteristically contain two ester moieties wherein said ester moieties contain a fluorinated or saturated hydrocarbon alkyl moiety. The pyromellitates additionally contain two acid chloride moieties which are capable of reacting with various compounds to produce various products useful as surfactants.
Inventors
- 👤 Bryce C. Oxenrider
- 👤 David J. Long
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:47
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/76
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
55 words
A compound having the structure ##STR7## or mixtures thereof wherein C is COCl and A is COWQ with W being --O--, --S--, --NH-- or --N(CH 3 )--; wherein Q is alkyl of 2-24 carbons or --R--(CF 2 ) p CF 3 with R being alkylene of 1-6 carbons and p being an integer of 3-15.
Claim 2
Dependent Claim
55 words
A compound having the structure ##STR7## or mixtures thereof wherein C is COCl and A is COWQ with W being --O--, --S--, --NH-- or --N(CH 3 )--; wherein Q is alkyl of 2-24 carbons or --R--(CF 2 ) p CF 3 with R being alkylene of 1-6 carbons and p being an integer of 3-15.
Claim 3
Dependent Claim
8 words
Compound of claim 1 wherein W is --O--.
Claim 4
Dependent Claim
11 words
Compound of claim 1 wherein Q is alkyl of 2-24 carbons.
Claim 5
Dependent Claim
11 words
Compound of claim 3 wherein Q is alkyl of 14-20 carbons.
Claim 6
Dependent Claim
21 words
Compound of claim 1 wherein Q is --(CH 2 ) 2 (CF 2 ) p CF 3 and p is 3-13.
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) | 1987-07-17 | 1988-01-16 | 1988-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-17 | 1992-01-16 | 1992-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-17 | 1996-01-16 | 1996-07-17 | $7700.00 | Window Closed / Lapsed |