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US4209371A
Expired / Lapsed
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Method of promoting essentially complete vinyl polymerization of ultraviolet-curable compositions
Assignee: Dow Chemical Co
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Filing: 1979-03-01
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Granted: 1980-06-24
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Expires: 1999-03-01
Abstract
Abstract A method of essentially completely polymerizing ultraviolet-curable vinyl compositions containing monofunctional acrylate diluents, the method comprising: (a) admixing with the composition at least about 1 weight percent, based upon the weight of the composition, of a polyester additive having a molecular weight not in excess of about 1,000, and (b) exposing the admixture of (a) to a sufficient amount of radiant energy to essentially completely polymerize the vinyl components of the composition. For example, a composition consisting of the diacrylate of a bisphenol A and epichlorohydrin condensation adduct in a dicyclopentadiene acrylate diluent is vinyl polymerized in the presence of ethylene diacetate with electromagnetic radiation such that less than 2 percent unreacted dicyclopentadiene acrylate monomer is present in the resulting cured composition.
Inventors
- 👤 George A. Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:01
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/46; C08F2/48; C08F2/50; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31529; Y10T428/31678; Y10T428/31692; Y10T428/31696; Y10T428/31699
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
162 words
In a method of essentially completely polymerizing UV-curable vinyl compositions containing sterically encumbered monofunctional acrylate diluents, the improvement comprising: (a) admixing with the composition at least about 1 weight percent, based upon the weight of the composition, of a polyester additive of the formula R--M--R (I) where each R can be the same or different and is ##STR3## where R' is a C 1 -C 10 aliphatic, C 4 -C 7 alicyclic or an aryl radical, R' having no groups interferingly reactive with the UV-curing mechanism and M is a divalent aliphatic, alicyclic or aryl radical, M having no groups interferingly reactive with the UV-curing mechanism, with the provisoes that R' and M are not simultaneously aryl and the molecular weight of I is not in excess of about 1,000, and (b) exposing the admixture of (a) to a sufficient amount of "electromagnetic radiation having wavelengths of above about 2,000 Angstrom units" to essentially completely polymerize the vinyl components of the composition.
Claim 2
Dependent Claim
162 words
In a method of essentially completely polymerizing UV-curable vinyl compositions containing sterically encumbered monofunctional acrylate diluents, the improvement comprising: (a) admixing with the composition at least about 1 weight percent, based upon the weight of the composition, of a polyester additive of the formula R--M--R (I) where each R can be the same or different and is ##STR3## where R' is a C 1 -C 10 aliphatic, C 4 -C 7 alicyclic or an aryl radical, R' having no groups interferingly reactive with the UV-curing mechanism and M is a divalent aliphatic, alicyclic or aryl radical, M having no groups interferingly reactive with the UV-curing mechanism, with the provisoes that R' and M are not simultaneously aryl and the molecular weight of I is not in excess of about 1,000, and (b) exposing the admixture of (a) to a sufficient amount of "electromagnetic radiation having wavelengths of above about 2,000 Angstrom units" to essentially completely polymerize the vinyl components of the composition.
Claim 3
Dependent Claim
18 words
The method of claim 1 wherein the molecular weight of I is not in excess of about 500.
Claim 4
Dependent Claim
15 words
The method of claim 2 wherein R' is a C 1 -C 10 alkyl radical.
Claim 5
Dependent Claim
16 words
The method of claim 3 wherein M is a C 2 -C 10 saturated aliphatic radical.
Claim 6
Dependent Claim
19 words
The method of claim 4 wherein I is present in a concentration of at least about 5 weight percent.
Claim 7
Dependent Claim
19 words
The method of claim 5 wherein at least one of the sterically encumbered monofunctional acrylate diluents is dicyclopentadiene acrylate.
Claim 8
Dependent Claim
17 words
The method of claim 6 wherein the dicyclopentadiene acrylate is the principle sterically encumbered monofunctional acrylate diluent.
Claim 9
Dependent Claim
13 words
The method of claim 7 wherein I is 1,2-ethanediol, diacetate or 1,2-propanediol, diacetate.
References Cited (Backward Citations)
US4077858A
Cited
US4088948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-06-24 | 1983-12-24 | 1984-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-24 | 1987-12-24 | 1988-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-24 | 1991-12-24 | 1992-06-24 | $7700.00 | Window Closed / Lapsed |