Patent US2883418A successfully refreshed from Google Patents.
US2883418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylic acid ester production
Assignee: BASF SE
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Filing: 1954-11-12
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Granted: 1959-04-21
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Expires: 1974-11-12
Abstract
No abstract record available.
Inventors
- 👤 Reppe Walter
- 👤 Stadler Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:15
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/36; C07C67/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
IN THE PROCESS FOR THE PRODUCTION OF ACRYLIC ACID ESTERS BY THE INTERACTION OF ACETYLENE AND CARBON MONOXIDE WITH NON-OLEFINIC OXYGEN COMPOUNDS AT ELEVATED TEMPERATURE IN THE RANGE OF ABOUT 150*C, TO ABOUT 250*C. AND UNDER SUPERATMOSPHERIC PRESSURE IN THE RANGE OF ABOUT 5 TO ABOUT 90 ATMOSPHERES IN THE PRESENCE OF A SOLVENT AND A CARBONYLATION CATALYST BASED ON A METAL OF THE IRON GROUP THE STEP WHICH COMPRISES CARRYING OUT THE REACTION IN THE PRESENCE OF AN EXCESS BY VOLUME OF AN INERT SOLVENT CONTAINING IN HOMOGENEOUS SOLUTION A CATALYTIC AMOUNT OF NICKEL HALIDE CATALYST AND AS AN ACTIVATOR A SALT OF COPPER THAT IS SOLUBLE IN THE REACTION MEDIUM.
Claim 2
Dependent Claim
112 words
IN THE PROCESS FOR THE PRODUCTION OF ACRYLIC ACID ESTERS BY THE INTERACTION OF ACETYLENE AND CARBON MONOXIDE WITH NON-OLEFINIC OXYGEN COMPOUNDS AT ELEVATED TEMPERATURE IN THE RANGE OF ABOUT 150*C, TO ABOUT 250*C. AND UNDER SUPERATMOSPHERIC PRESSURE IN THE RANGE OF ABOUT 5 TO ABOUT 90 ATMOSPHERES IN THE PRESENCE OF A SOLVENT AND A CARBONYLATION CATALYST BASED ON A METAL OF THE IRON GROUP THE STEP WHICH COMPRISES CARRYING OUT THE REACTION IN THE PRESENCE OF AN EXCESS BY VOLUME OF AN INERT SOLVENT CONTAINING IN HOMOGENEOUS SOLUTION A CATALYTIC AMOUNT OF NICKEL HALIDE CATALYST AND AS AN ACTIVATOR A SALT OF COPPER THAT IS SOLUBLE IN THE REACTION MEDIUM.
References Cited (Backward Citations)
DE854948C
Cited
US2582911A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |