US2901516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of 2,2,3,3-tetrachloro-1,4-butanediol
Assignee: GAF Chemicals Corp
•
Filing: 1956-07-23
•
Granted: 1959-08-25
•
Expires: 1976-07-23
Abstract
No abstract record available.
Inventors
- 👤 Robert W Wynn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:37
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/56; C07D307/68; C07C; C07C31/00; C07C31/34; C07C67/00; C07C67/08; C07C67/28; C07C67/287; C07C69/00; C07C69/62; C07C69/63; C07C69/76; C07C69/78
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
59 words
A PROCESS COMPRISING REACTING A 1,4-DIACYLOXY-2BUTYNE, WHEREIN SAID ACYL GROUP IS THAT OF A MONOCARBOXYLIC ACID OF THE FORMULA RCOOH WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, ALKYL, PHENYL, NAPHTHYL, TOLYL, BENZYL, FURYL AND 3-PYRIDINYL, WITH SUFFICIENT CHLORINE TO PRODUCE THE CORRESPONDING 1-4-DIACYLOXY2,2,3,3-TETRACHLOROBUTANE, AND THEN SUBJECTING THE LATTER TO HYDROLYSIS CONDITIONS TO PRODUCE THE DESIRED 2,2,3,3-TETRACHLORO-1,4-BUTANEDIOL.
Claim 2
Dependent Claim
59 words
A PROCESS COMPRISING REACTING A 1,4-DIACYLOXY-2BUTYNE, WHEREIN SAID ACYL GROUP IS THAT OF A MONOCARBOXYLIC ACID OF THE FORMULA RCOOH WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, ALKYL, PHENYL, NAPHTHYL, TOLYL, BENZYL, FURYL AND 3-PYRIDINYL, WITH SUFFICIENT CHLORINE TO PRODUCE THE CORRESPONDING 1-4-DIACYLOXY2,2,3,3-TETRACHLOROBUTANE, AND THEN SUBJECTING THE LATTER TO HYDROLYSIS CONDITIONS TO PRODUCE THE DESIRED 2,2,3,3-TETRACHLORO-1,4-BUTANEDIOL.
Claim 3
Dependent Claim
14 words
A PROCESS AS DEFINED IN CLAIM 1 WHEREIN SAID ACYLOXY GROUPS ARE ACETOXY GROUPS.
References Cited (Backward Citations)
US2648702A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |