Patent US4889948A successfully refreshed from Google Patents.
US4889948A
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Acrylate ester ether derivatives
Assignee: University of Southern Mississippi
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Filing: 1987-08-18
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Granted: 1989-12-26
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Expires: 2007-08-18
Abstract
Abstract A process for synthesizing ethers of alkyl alpha(hydroxymethyl)-acrylate by reacting alkyl acrylate and formaldehyde in the presence of a DABCO catalyst. The ethers may be used as cross-linking agents for thermoplastic polymers. Further, these ethers in turn enable synthesis of cyclopolymers that may show promising biological activity.
Inventors
- 👤 Lon J. Mathias
- 👤 Selim H. Kusefoglu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:08
CPC Classifications
C; C08; C08F; C08F16/00; C08F16/12; C08F16/32
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
35 words
A vinyl monomer of the formula: ##STR9## wherein n is an integer from 0 to 4 and R is a member selected from the group consisting of carboxy, carboxyalkyl, carbonylalkyl, cyano, carboxamide, and substituted carboxamide.
Claim 2
Dependent Claim
35 words
A vinyl monomer of the formula: ##STR9## wherein n is an integer from 0 to 4 and R is a member selected from the group consisting of carboxy, carboxyalkyl, carbonylalkyl, cyano, carboxamide, and substituted carboxamide.
Claim 3
Dependent Claim
10 words
The vinyl monomer of claim 1 wherein n is 0.
Claim 4
Dependent Claim
10 words
The vinyl monomer of claim 1 wherein n is 1.
Claim 5
Dependent Claim
10 words
The vinyl monomer of claim 1 wherein n is 2.
Claim 6
Dependent Claim
20 words
The vinyl monomer of claim 1 wherein R is a member selected from the group consisting of carboxy and carboxymethyl.
Claim 7
Dependent Claim
32 words
A method of preparing the vinyl monomer of claim 1 comprising reacting an acrylate ester with formaldehyde in the presence of 1,4-diazabicyclo [2.2.2]-octane and separating the monomer from the resulting reaction mixture.
Claim 8
Dependent Claim
30 words
A method of preparing the vinyl monomer of claim 1 comprising heating alkyl alpha-(hydroxymethyl) acrylate in the presence of 1,4-diazabicyclo [2.2.2.]-octane and separating the monomer from the resulting reaction 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) | 1992-12-25 | 1993-06-26 | 1993-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-25 | 1997-06-26 | 1997-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-25 | 2001-06-26 | 2001-12-26 | $7700.00 | Window Closed / Lapsed |