US3349129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Difluoramino-butane-diol
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1961-11-20
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Granted: 1967-10-24
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Expires: 1981-11-20
Abstract
No abstract record available.
Inventors
- 👤 Eugene L Stogryn
- 👤 Perry A Argabright
- 👤 Ralph J Leary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:51
CPC Classifications
C; C06; C06B; C06B43/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
4 words
2,3-BIN(DIFLUOROAMINO)-BUTANE-1,3-DIOL HAVING THE FORMULA:
Claim 2
Dependent Claim
4 words
2,3-BIN(DIFLUOROAMINO)-BUTANE-1,3-DIOL HAVING THE FORMULA:
Claim 3
Dependent Claim
68 words
A PROCESS FOR PREPARING 2,3-BIS(NF2)-BUTANE 1,4DIOL WHICH COMPRISES, REACTING 2,3-BIS(NF2)-1,4-DIACETOXYBUTANE WITH METHANOL IN THE PRESENCE OF A CATALYTIC AMOUNT OF A SULFONATED AROMATIC CATALYST UNDER CONDITIONS OF METHANOL REFLUX TO DISTILL METHANOL WITH METHYL ACETATE, SAID METHYL ACETATE BEING A BY-PRODUCT FORMED DURING THE REACITON, SEPARATING CATALYST FROM A RESULTING OILY PRODUCT HAVING THE COMPOSITION OF 2,3-BIS(DIFLUORAMINO)-BUTANE, 1,4-DIOL, AND REMOVING ANY REMAINING EXCESS METHANOL FROM SAID OILY PRODUCT.
Claim 4
Dependent Claim
68 words
A PROCESS FOR PREPARING 2,3-BIS(NF2)-BUTANE 1,4DIOL WHICH COMPRISES, REACTING 2,3-BIS(NF2)-1,4-DIACETOXYBUTANE WITH METHANOL IN THE PRESENCE OF A CATALYTIC AMOUNT OF A SULFONATED AROMATIC CATALYST UNDER CONDITIONS OF METHANOL REFLUX TO DISTILL METHANOL WITH METHYL ACETATE, SAID METHYL ACETATE BEING A BY-PRODUCT FORMED DURING THE REACITON, SEPARATING CATALYST FROM A RESULTING OILY PRODUCT HAVING THE COMPOSITION OF 2,3-BIS(DIFLUORAMINO)-BUTANE, 1,4-DIOL, AND REMOVING ANY REMAINING EXCESS METHANOL FROM SAID OILY PRODUCT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |