US2888480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of thiolacrylic esters
Assignee: Rohm and Haas Co
•
Filing: 1957-10-02
•
Granted: 1959-05-26
•
Expires: 1977-10-02
Abstract
No abstract record available.
Inventors
- 👤 Harry T Neher
- 👤 Edward H Specht
- 👤 Everett J Kelley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:37
CPC Classifications
C; C08; C08F; C08F28/00; C07; C07C; C07C327/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A PROCESS FOR PREPARING THIOLACRYLIC ESTERS WHICH COMPRISES REACTING TOGETHER BETWEEN 2K* C. AND 75*C. IN AN INERT ORGANIC SOLVENT ACRYLIC ACID, NICKEL CARBONYL, AND ACETYLENE AND, WHILE SAID SUBSTANCES ARE REACTING TOGETHER IN THE REACTION MIXTURE, BRINGING INTO THE REACTING MIXTURE AND THERE REACTING BETWEEN 20* C. AND 80* C. A THIOL AND CARBON NMONOXIDE, THE CARBONOXIDE BEING ADDED IN A PROPORTION SUPPLYING LESS THAN 70% OF THE TOTAL CARBONYL GROUPS FROM SAID MONOXIDE AND AVAILABLE FROM SAID NICKEL CARBONYL.
Claim 2
Dependent Claim
81 words
A PROCESS FOR PREPARING THIOLACRYLIC ESTERS WHICH COMPRISES REACTING TOGETHER BETWEEN 2K* C. AND 75*C. IN AN INERT ORGANIC SOLVENT ACRYLIC ACID, NICKEL CARBONYL, AND ACETYLENE AND, WHILE SAID SUBSTANCES ARE REACTING TOGETHER IN THE REACTION MIXTURE, BRINGING INTO THE REACTING MIXTURE AND THERE REACTING BETWEEN 20* C. AND 80* C. A THIOL AND CARBON NMONOXIDE, THE CARBONOXIDE BEING ADDED IN A PROPORTION SUPPLYING LESS THAN 70% OF THE TOTAL CARBONYL GROUPS FROM SAID MONOXIDE AND AVAILABLE FROM SAID NICKEL CARBONYL.
References Cited (Backward Citations)
DE856293C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |