US3816283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation polymerizable vinyl ester resins containing 2-oxazoline and guanidine additives
Assignee: Dow Chemical Co
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Filing: 1971-05-13
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Granted: 1974-06-11
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Expires: 1991-05-13
Abstract
Abstract The addition of at least about 0.3 weight percent of a 2oxazoline, a guanidine or certain amines to a thermosettable mixture of certain vinyl monomers and a polymerizable vinyl ester resin reduces the dosage level of ionizing radiation required to cure the mixture.
Inventors
- 👤 I Mani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:59
CPC Classifications
C; C08; C08F; C08F299/00; C08F299/02; C08F299/026; C08F299/028; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/1455; C08G59/1461; Y; Y10; Y10S; Y10S525/00; Y10S525/922
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
18 words
The process of claim 1 wherein said polyhydric phenol is bisphenol A, a novolac resin or mixtures thereof.
Claim 2
Dependent Claim
15 words
The process of claim 1 wherein said unsaturated acid is acrylic acid or methacrylic acid.
Claim 3
Dependent Claim
18 words
The process of claim 1 wherein said nitrogen compound is present in about 0.5 to 10 weight percent.
Claim 4
Dependent Claim
18 words
The process of claim 1 wherein said nitrogen compound is present in about 2 to 5 weight percent.
Claim 5
Dependent Claim
14 words
The process of claim 1 wherein said nitrogen compound is guanidine or tetramethyl guanidine.
Claim 6
Dependent Claim
12 words
The process of claim 1 wherein said nitrogen compound has the formula
Claim 7
Dependent Claim
16 words
The process of claim 1 wherein said 2-oxazoline is 2,2''-tetramethylene bis(2-oxazoline), 2,2''-oxydiethylene bis(2-oxazoline) or 2,2''-thiodiethylene bis(2-oxazoline).
Claim 8
Dependent Claim
128 words
A thermosettable mixture suitable for curing by exposure to low levels of ionizing radiation comprising a mixture of a polymerizable vinyl ester resin and a nonvolatile vinyl monomer selected from the group consisting of vinyl carboxylic acids, vinyl nitriles, vinyl amides, alkyl and hydroxyalkyl esters of vinyl carboxylic acids wherein the alkyl group contains from 1 to 8 carbons, and mixtures thereof, said mixture containing at least about 0.3 weight percent based on the weight of the mixture of a nitrogen containing compound selected from the group consisting of 2-oxazolines and guanidines and wherein said polymerizable vinyl ester resin is prepared by reacting essentially equivalent amounts of a polyepoxide of a polyhydric phenol having more than one epoxide group per molecule and an unsaturated acid having the formula
Claim 9
Dependent Claim
18 words
The mixture of claim 9 wherein said polyhydric phenol is bisphenol A, a novolac resin or mixtures thereof.
Claim 10
Dependent Claim
15 words
The mixture of claim 9 wherein said unsaturated acid is acrylic acid or methacrylic acid.
Claim 11
Dependent Claim
18 words
The mixture of claim 9 wherein said nitrogen compound is present in about 0.5 to 10 weight precent.
Claim 12
Dependent Claim
18 words
The mixture of claim 9 wherein said nitrogen compound is present in about 2 to 5 weight percent.
Claim 13
Dependent Claim
14 words
The mixture of claim 9 wherein said nitrogen compound is guanidine or tetramethyl guanidine.
Claim 14
Dependent Claim
12 words
The mixture of claim 9 wherein said nitrogen compound has the formula
Claim 15
Dependent Claim
16 words
The mixture of claim 9 wherein said 2-oxazoline is 2,2''-tetramethylene bis(2-oxazoline), 2,2''-oxydiethylene bis(2-oxazoline) or 2,2''-thiodiethylene bis(2-oxazoline).
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |