US4199526A
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Allyl-acrylic monomers, their preparation and polymers derived therefrom
Assignee: Societe Nationale des Poudres et Explosifs
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Filing: 1977-08-31
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Granted: 1980-04-22
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Expires: 1997-08-31
Abstract
Abstract Novel allyl-acrylic monomers of the formula: ##STR1## wherein R is a C 1-4 alkylene group and R 1 is hydrogen or methyl, are described. The preferred monomer is that in which R is ethylene and R 1 is methyl. When subjected to conventional free radical polymerization, in one stage or two stages, these monomers give transparent polymers having good mechanical properties, particularly hardness.
Inventors
- 👤 Jean-Pierre G. Senet
- 👤 Patrice M. Le Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:17
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; C08F20/36
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
35 words
Allyl-acrylic monomers of the formula: ##STR15## wherein R is an alkylene group having 1 to 4 carbon atoms and R 1 is selected from the group consisting of a hydrogen atom and a methyl group.
Claim 2
Dependent Claim
35 words
Allyl-acrylic monomers of the formula: ##STR15## wherein R is an alkylene group having 1 to 4 carbon atoms and R 1 is selected from the group consisting of a hydrogen atom and a methyl group.
Claim 3
Dependent Claim
19 words
The monomer according to claim 1, wherein R is --CH 2 .CH 2 -- and R 1 is methyl.
Claim 4
Dependent Claim
82 words
A process for the preparation of an allyl-acrylic monomer of the formula: ##STR16## wherein R is an alkylene group having 1 to 4 carbon atoms and R 1 is selected from the group consisting of a hydrogen atom and a methyl group, which consists of condensing an allyl chloroformate of the formula: ##STR17## with a compound of the formula: ##STR18## in the presence of pyridine and methylene chloride and hydroquinone as a stabilizer at a temperature between +5° C. and +10° C.
Claim 5
Dependent Claim
82 words
A process for the preparation of an allyl-acrylic monomer of the formula: ##STR16## wherein R is an alkylene group having 1 to 4 carbon atoms and R 1 is selected from the group consisting of a hydrogen atom and a methyl group, which consists of condensing an allyl chloroformate of the formula: ##STR17## with a compound of the formula: ##STR18## in the presence of pyridine and methylene chloride and hydroquinone as a stabilizer at a temperature between +5° C. and +10° C.
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) | 1983-04-22 | 1983-10-22 | 1984-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-22 | 1987-10-22 | 1988-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-22 | 1991-10-22 | 1992-04-22 | $7700.00 | Window Closed / Lapsed |