US3293283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for transesterifying lower alkyl acrylates
Assignee: Distillers Co Yeast Ltd
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Filing: 1964-01-17
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Granted: 1966-12-20
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Expires: 1984-01-17
Abstract
No abstract record available.
Inventors
- 👤 Dobson Kenneth Rowland
- 👤 Yeomans Bertram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:49
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/52; C07C69/533; C07C69/54; C07C67/00; C07C67/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
IN THE PROCESS FOR THE PRODUCTION OF ACRYLATES BY THE TRANSESTERIFICATION REACTION OF A LOWER ALKYL ACRYLATE WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF ACYCLIC, ALICYCLIC AND AROMATIC ALCOHOLS HAVING FROM 3 TO 20 CARBON ATOMS AT AN ELEVATED TEMPERATURE AND RECOVERING THE DESIRED ACRYLATE FROM THE PRODUCT MIXTURE BY DISTILLATION, THE IMPROVEMENT WHEREIN THE REACTION IS CONDUCTED IN THE PRESENCE OF A TETRA-ALKOXY DERIVATIVE OF TITANIUM AS CATALYST AND OF A HYDROCARBON PLASTICIZER OIL HAVING A BOILING POINT AT LEAST 50*C. HIGHER THAN THE ACRYLIC ESTER PRODUCT, AND WHEREIN THE CATALYST IS HYDROLYSED IN THE PRODUCT MIXTURE AND THE PRODUCED TITANIA SEPARATED PRIOR TO RECOVERING THE DESIRED ACRYLATE PRODUCT.
Claim 2
Dependent Claim
112 words
IN THE PROCESS FOR THE PRODUCTION OF ACRYLATES BY THE TRANSESTERIFICATION REACTION OF A LOWER ALKYL ACRYLATE WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF ACYCLIC, ALICYCLIC AND AROMATIC ALCOHOLS HAVING FROM 3 TO 20 CARBON ATOMS AT AN ELEVATED TEMPERATURE AND RECOVERING THE DESIRED ACRYLATE FROM THE PRODUCT MIXTURE BY DISTILLATION, THE IMPROVEMENT WHEREIN THE REACTION IS CONDUCTED IN THE PRESENCE OF A TETRA-ALKOXY DERIVATIVE OF TITANIUM AS CATALYST AND OF A HYDROCARBON PLASTICIZER OIL HAVING A BOILING POINT AT LEAST 50*C. HIGHER THAN THE ACRYLIC ESTER PRODUCT, AND WHEREIN THE CATALYST IS HYDROLYSED IN THE PRODUCT MIXTURE AND THE PRODUCED TITANIA SEPARATED PRIOR TO RECOVERING THE DESIRED ACRYLATE PRODUCT.
References Cited (Backward Citations)
US2822348A
Cited
US3106570A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |