US4083890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unsaturated ester resin/monomer blend with hydroperoxide, vanadium compound and ketone peroxide for controlled gel time
Assignee: Dow Chemical Co
•
Filing: 1977-05-16
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Granted: 1978-04-11
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Expires: 1997-05-16
Abstract
Abstract Unsaturated resin compositions, which are curable at elevated temperatures to temperatures below 0° C and which contain a hydroperoxide as the catalyst and a soluble organic vanadium compound as a cure promoter or accelerator, are retarded against gelation without inhibiting the cure by the addition of a ketone peroxide.
Inventors
- 👤 Stevens S. Drake
- 👤 Harold E. Rossow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:25
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/14; C08F; C08F299/00; C08F299/02; C08F299/026; C08F299/04; C08F299/0442; C08F299/045; C08L; C08L63/00; C08L67/00; C08L67/06; Y; Y10; Y10S; Y10S525/00; Y10S525/922
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
108 words
In a resin composition which is curable at elevated temperatures to temperatures below 0° C wherein the composition contains an unsaturated resin in combination with a compatible, copolymerizable monomer, a catalytic amount of a hydroperoxide and a sufficient amount of a soluble organic vanadium compound to accelerate the catalytic cure of said composition, the improvement which comprises retarding the gel time of the composition without inhibiting the cure thereof by the addition of about 10 to 80 weight percent of at least one ketone peroxide based on the weight of the hydroperoxide; wherein said resin is an unsaturated polyester, a terminally unsaturated vinyl ester resin or mixtures thereof.
Claim 2
Dependent Claim
108 words
In a resin composition which is curable at elevated temperatures to temperatures below 0° C wherein the composition contains an unsaturated resin in combination with a compatible, copolymerizable monomer, a catalytic amount of a hydroperoxide and a sufficient amount of a soluble organic vanadium compound to accelerate the catalytic cure of said composition, the improvement which comprises retarding the gel time of the composition without inhibiting the cure thereof by the addition of about 10 to 80 weight percent of at least one ketone peroxide based on the weight of the hydroperoxide; wherein said resin is an unsaturated polyester, a terminally unsaturated vinyl ester resin or mixtures thereof.
Claim 3
Dependent Claim
31 words
The composition of claim 1 further comprising an amine accelerator having the formula: ##STR5## where R 1 is hydrogen or methyl and R 2 and R 3 are methyl or ethyl.
Claim 4
Dependent Claim
13 words
The composition of claim 2 wherein said amine is N,N-dimethylaniline, N,N-diethylaniline or N,N-dimethyltoluidine.
Claim 5
Dependent Claim
28 words
The composition of claim 1 wherein said resin consists of 50 to 100 weight percent of said polyester and 0 to 50 percent of said vinyl ester resin.
Claim 6
Dependent Claim
28 words
The composition of claim 4 wherein sid resin consists of 75 to 90 weight percent of said polyester and 10 to 25 percent of said vinyl ester resin.
Claim 7
Dependent Claim
14 words
The composition of claim 1 wherein said ketone peroxide is methyl ethyl ketone peroxide.
Claim 8
Dependent Claim
14 words
The composition of claim 1 wherein the ketone peroxide is prepared from diacetone alcohol.
Claim 9
Dependent Claim
128 words
In resin composition which is curable at elevated temperatures to temperatures below 0° C wherein the composition contains an unsaturated resin in combination with a compatible, copolymerizable monomer, a catalytic amount of a hydroperoxide and a sufficient amount of a soluble organic vanadium compound to accelerate the catalytic cure of said composition, the improvement which comprises retarding the gel time of the composition without inhibiting the cure thereof by the addition of about 10 to 80 weight percent of at least one ketone peroxide based on the weight of the hydroperoxide and about 50 to 500 ppm of at least one free radical polymerization inhibitor based on the weight of the composition; wherein said resin is an unsaturated polyester, a terminally unsaturated vinyl ester resin or mixtures thereof.
Claim 10
Dependent Claim
128 words
In resin composition which is curable at elevated temperatures to temperatures below 0° C wherein the composition contains an unsaturated resin in combination with a compatible, copolymerizable monomer, a catalytic amount of a hydroperoxide and a sufficient amount of a soluble organic vanadium compound to accelerate the catalytic cure of said composition, the improvement which comprises retarding the gel time of the composition without inhibiting the cure thereof by the addition of about 10 to 80 weight percent of at least one ketone peroxide based on the weight of the hydroperoxide and about 50 to 500 ppm of at least one free radical polymerization inhibitor based on the weight of the composition; wherein said resin is an unsaturated polyester, a terminally unsaturated vinyl ester resin or mixtures thereof.
Claim 11
Dependent Claim
25 words
The composition of claim 8 wherein said free radical polymerization inhibitor is an alkyl hydroquinone having 1 to 4 carbon atoms in the alkyl group.
Claim 12
Dependent Claim
14 words
The composition of claim 9 wherein said alkyl hydroquinone is t-butyl hydroquinone or tolylhydroquinone.
References Cited (Backward Citations)
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US3239581A
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US3018266A
Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-10 | 1981-10-10 | 1982-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-10 | 1985-10-10 | 1986-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-10 | 1989-10-10 | 1990-04-11 | $7700.00 | Window Closed / Lapsed |