Patent US3087970A successfully refreshed from Google Patents.
US3087970A
Expired / Lapsed
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Synthesis of propargyl alcohol from formaldehyde and acetylene
Assignee: Honeywell International Inc
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Filing: 1959-10-19
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Granted: 1963-04-30
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Expires: 1979-10-19
Abstract
No abstract record available.
Inventors
- 👤 William P Moore
- 👤 Rob R Mac-Gregor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:56
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/36; C07C29/38; C07C29/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
IN THE PROCESS OF REACTING ACETYLENE WITH FORMALDEHYDE IN THE PRESENCE OF CATALYSTS SELECTED FROM THE GROUP CONSISTING OF HEAVY METALS OF THE FIRST AND SECOND GROUPS OF THE PERIODIC SYSTEM AND THEIR COMPOUNDS WHEREIN PROPARGYL ALCOHOL AND BUTYNEDIOL ARE FORMED THAT IMPROVEMENT FOR THE PREFERENTIAL SYNETHESIS OF PROPARGYL ALCOHOL OF CARRYING OUT SAID REACTION IN THE PRESENCE OF AQUEOUS N-ALKYL-2-PYRROLIDONE IN WHICH THE ALKYL GROUP CONTAINS 1-8 CARBON ATOMS IN ITS RADICAL AND IN WHICH THE WATER CONCENTRATION IS HELD BETWEEN 8-36 PRCENT OF THE AQUEOUS N-ALKYL-2-PYRROLIDONE/FORMALDEHYDE FEED MIXTURE.
Claim 2
Dependent Claim
90 words
IN THE PROCESS OF REACTING ACETYLENE WITH FORMALDEHYDE IN THE PRESENCE OF CATALYSTS SELECTED FROM THE GROUP CONSISTING OF HEAVY METALS OF THE FIRST AND SECOND GROUPS OF THE PERIODIC SYSTEM AND THEIR COMPOUNDS WHEREIN PROPARGYL ALCOHOL AND BUTYNEDIOL ARE FORMED THAT IMPROVEMENT FOR THE PREFERENTIAL SYNETHESIS OF PROPARGYL ALCOHOL OF CARRYING OUT SAID REACTION IN THE PRESENCE OF AQUEOUS N-ALKYL-2-PYRROLIDONE IN WHICH THE ALKYL GROUP CONTAINS 1-8 CARBON ATOMS IN ITS RADICAL AND IN WHICH THE WATER CONCENTRATION IS HELD BETWEEN 8-36 PRCENT OF THE AQUEOUS N-ALKYL-2-PYRROLIDONE/FORMALDEHYDE FEED MIXTURE.
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) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |