US3960684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfones as solvents in catalysts of U.V. curable systems
Assignee: Primerica Inc
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Filing: 1974-09-30
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Granted: 1976-06-01
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Expires: 1994-09-30
Abstract
Abstract Stable diazonium catalyst solutions are provided in which the catalyst is dissolved in an organic sulfone. The catalyst solutions have greatly extended shelf-life while at the same time retain the ability to rapidly cure epoxy resins upon exposure to an energy source.
Inventors
- 👤 Jacob Howard Feinberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:31
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08J3/097; B; B01; B01J; B01J19/00; B01J19/08; B01J19/12; B01J19/122; B01J19/123; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C08G59/625; C08J2363/00; Y; Y10; Y10S; Y10S524/00; Y10S524/906; Y10S525/00; Y10S525/939
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
104 words
A polymerizable composition, capable of being shipped and stored as a two-package system, consisting essentially of (1) a monomeric or prepolymeric epoxide material or mixture thereof with a monomer selected from the group consisting of lactones and vinyl-containing compounds, said material being polymerizable to higher molecular weights through the action of a cationic catalyst and (2) a radiation-sensitive aromatic diazonium salt of a complex halogenide, which decomposes upon application of energy to release a Lewis Acid effective to initiate polymerization of said epoxide material, dissolved in an organic sulfone, said organic sulfone being substantially inert to said diazonium salt and to said epoxide material.
Claim 2
Dependent Claim
104 words
A polymerizable composition, capable of being shipped and stored as a two-package system, consisting essentially of (1) a monomeric or prepolymeric epoxide material or mixture thereof with a monomer selected from the group consisting of lactones and vinyl-containing compounds, said material being polymerizable to higher molecular weights through the action of a cationic catalyst and (2) a radiation-sensitive aromatic diazonium salt of a complex halogenide, which decomposes upon application of energy to release a Lewis Acid effective to initiate polymerization of said epoxide material, dissolved in an organic sulfone, said organic sulfone being substantially inert to said diazonium salt and to said epoxide material.
Claim 3
Dependent Claim
17 words
The composition of claim 1, in which the monomeric or prepolymeric epoxide is a mixture of epoxides.
Claim 4
Dependent Claim
18 words
The composition of claim 1, in which the polymerizable material is a mixture of epoxides and a lactone.
Claim 5
Dependent Claim
19 words
The composition of claim 1, in which the polymerizable material is a mixture of epoxides and a vinylcontaining compound.
Claim 6
Dependent Claim
28 words
The composition of claim 1, in which said solvent is a tetrahydrothiophene-1,1-dioxide of the formula ##EQU8## wherein R is selected from the group consisting of alkyl and hydrogen.
Claim 7
Dependent Claim
11 words
The composition of claim 1, in which said solvent is tetrahydrothiophene-1,1-dioxide.
Claim 8
Dependent Claim
11 words
The composition of claim 1, in which said solvent is dimethyltetrahydrothiophene-1,1-dioxide.
Claim 9
Dependent Claim
16 words
The composition of claim 1 in which said solvent is a mixture of tetrahydrothiophene-1,1-dioxide and dimethyltetrahydrothiophene-1,1-dioxide.
Claim 10
Dependent Claim
114 words
A polymerizable composition, capable of being shipped and stored as a two-package system, consisting essentially of, as one component, a liquid monomeric or prepolymeric epoxide material or mixture of epoxide materials with a monomer selected from the group consisting of gamma butyrolactone, styrene and dodecyl vinyl ether, said mixture being polymerizable to higher molecular weights through the action of a cationic catalyst and as a second component, an aromatic diazonium salt of a complex halogenide which decomposes upon application of energy to provide a halide Lewis acid effective to initiate polymerization of said epoxide material, dissolved in a tetrahydrothiophene-1,1-dioxide solvent, said solvent being substantially inert to said diazonium salt and to said epoxide material.
Claim 11
Dependent Claim
114 words
A polymerizable composition, capable of being shipped and stored as a two-package system, consisting essentially of, as one component, a liquid monomeric or prepolymeric epoxide material or mixture of epoxide materials with a monomer selected from the group consisting of gamma butyrolactone, styrene and dodecyl vinyl ether, said mixture being polymerizable to higher molecular weights through the action of a cationic catalyst and as a second component, an aromatic diazonium salt of a complex halogenide which decomposes upon application of energy to provide a halide Lewis acid effective to initiate polymerization of said epoxide material, dissolved in a tetrahydrothiophene-1,1-dioxide solvent, said solvent being substantially inert to said diazonium salt and to said epoxide material.
Claim 12
Dependent Claim
30 words
The composition of claim 9, in which the total amount of any unpolymerizable volatile solvents present in said composition is less than about 4% by weight of the liquid composition.
Claim 13
Dependent Claim
15 words
The composition of claim 10, in which the polymerizable material is a mixture of epoxides.
Claim 14
Dependent Claim
13 words
The composition of claim 9, in which the aromatic diazonium salt is 4-methoxybenzenediazoniumhexafluorophosphate.
Claim 15
Dependent Claim
11 words
The composition of claim 12, in which the solvent is tetrahydrothiophene-1,1-dioxide.
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) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |