Patent US3716571A successfully refreshed from Google Patents.
US3716571A
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Oligocarbonate acrylates and a process for producing the same
Assignee: INST KHIM FIZ AN SSSR
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Filing: 1969-07-02
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Granted: 1973-02-13
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Expires: 1989-07-02
Abstract
Abstract A novel class of polymerizable oligomers -oligocarbonateacrylates and a process for producing the same by reacting monoesters of alkylene glycols and acids of the acrylic series with bischloroformates of glycols or bisphenols or with oligomeric compounds containing terminal bischloroformate groups. Said unsaturated oligoesters may be used in compositions of contact binding fiberglass plastics, colorless film-forming materials, electroinsulating compositions, adhesives. Besides, they may be used for producing heat-resistant protecting glass of improved strength, optical components, injection molding plastics and other polymer materials.
Inventors
- 👤 A Berlin
- 👤 T Kefeli
- 👤 Giaur N Kara
- 👤 B Kolomazov
- 👤 N Marshavina
- 👤 N Strongin
- 👤 J Altshuler
- 👤 A Efimov
- 👤 A Bodrova
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:57
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/64
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
51 words
An oligomer capable of polymerization which is an oligocarbonate-acrylate of the general formula CH2 C(X)COORO-COOR''OCOOR''''O-nCOOR''OCOOROCOC(X) CH2, where X is H, CH3, halogen or CN; R, R'' and R'''' are radicals selected from the group consisting of lower alkylene, oxydilower alkylene, lower alkylenediphenyl and phenylene radicals; and n is 1 or more.
Claim 2
Dependent Claim
51 words
An oligomer capable of polymerization which is an oligocarbonate-acrylate of the general formula CH2 C(X)COORO-COOR''OCOOR''''O-nCOOR''OCOOROCOC(X) CH2, where X is H, CH3, halogen or CN; R, R'' and R'''' are radicals selected from the group consisting of lower alkylene, oxydilower alkylene, lower alkylenediphenyl and phenylene radicals; and n is 1 or more.
Claim 3
Dependent Claim
28 words
An oligomer as in claim 1 wherein R, R'' and R'''' are radicals selected from the group consisting of ethylene, butylene, hexylene, oxydiethylene, isopropylidenediphenyl, and o- phenylene radicals.
Claim 4
Dependent Claim
22 words
An oligomer according to claim 1 wherein X is CH3, R is CH2CH2, R'' and R'''' are CH2CH2-O-CH2CH2 and n is 1.
Claim 5
Dependent Claim
136 words
A process for the production of an oligocarbonateacrylate which comprises reacting a monoester of an alkylene glycol and an acid of the acrylic series with an oligomeric compound containing terminal bischloroformate groups, in a molar ratio of the reagents of 2.2:1 respectively in an organic solvent in the presence of an organic base in the temperature range from -15* to +80*C, said oligomeric compound being produced by the condensation of a compound selected from the group consisting of phosgene, glycol bischloroformates and bisphenol bischloroformates with a compound selected from the group consisting of glycols, bisphenols, polyols, oligoethers with terminal hydroxyl groups and oligoesters with terminal hydroxyl groups, in the molar ratio of the reagents of 2:1 respectively in an organic solvent in the presence of an organic base in the temperature range from -15* to +80*C.
Claim 6
Dependent Claim
136 words
A process for the production of an oligocarbonateacrylate which comprises reacting a monoester of an alkylene glycol and an acid of the acrylic series with an oligomeric compound containing terminal bischloroformate groups, in a molar ratio of the reagents of 2.2:1 respectively in an organic solvent in the presence of an organic base in the temperature range from -15* to +80*C, said oligomeric compound being produced by the condensation of a compound selected from the group consisting of phosgene, glycol bischloroformates and bisphenol bischloroformates with a compound selected from the group consisting of glycols, bisphenols, polyols, oligoethers with terminal hydroxyl groups and oligoesters with terminal hydroxyl groups, in the molar ratio of the reagents of 2:1 respectively in an organic solvent in the presence of an organic base in the temperature range from -15* to +80*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) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |