Patent JPS522445A successfully refreshed from Google Patents.
US4139655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photocurable epoxy compositions containing thiopyrylium salts
Assignee: WR Grace and Co
•
Filing: 1978-05-09
•
Granted: 1979-02-13
•
Expires: 1998-05-09
Abstract
Abstract This invention relates to photocurable compositions comprising an epoxy resin and a catalytic amount of a photodecomposable thiopyrylium salt of the formula: <IMAGE> WHERE R1, R2 and R3 are independently selected from the group consisting of hydrogen, alkyl containing 1 to 10 carbon atoms, cycloalkyl containing 5 to 12 carbon atoms, aryl containing 6 to 12 carbon atoms and substituted derivatives thereof, M is a metal or metalloid, X is a halogen radical, a is a whole number equal to 1 to 10 and n is a whole number equal to 1 to 3.
Inventors
- 👤 Jung-Tsien Tsao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:12
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08G59/687; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/115; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31529
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
107 words
A photocurable composition comprising an epoxy resin polymerizable to a higher molecular weight and 0.1 to 10% by weight of said epoxy resin of a photodecomposable thiopyrylium salt of the formula: ##STR5## where R 1 , R 2 and R 3 are independently selected from the group consisting of hydrogen, alkyl containing 1 to 10 carbon atoms, cycloalkyl containing 5 to 12 carbon atoms, aryl containing 6 to 12 carbon atoms and substituted derivatives thereof, M is a metal or metalloid, X is a halogen radical, a is a whole number equal to 1 to 10 and n is a whole number equal to 1 to 3.
Claim 2
Dependent Claim
107 words
A photocurable composition comprising an epoxy resin polymerizable to a higher molecular weight and 0.1 to 10% by weight of said epoxy resin of a photodecomposable thiopyrylium salt of the formula: ##STR5## where R 1 , R 2 and R 3 are independently selected from the group consisting of hydrogen, alkyl containing 1 to 10 carbon atoms, cycloalkyl containing 5 to 12 carbon atoms, aryl containing 6 to 12 carbon atoms and substituted derivatives thereof, M is a metal or metalloid, X is a halogen radical, a is a whole number equal to 1 to 10 and n is a whole number equal to 1 to 3.
Claim 3
Dependent Claim
17 words
A photocurable composition in accordance with claim 1 where the thiopyrylium salt is a 2,4,6-triphenyl thiopyrylium salt.
Claim 4
Dependent Claim
18 words
A photocurable composition in accordance with claim 1 where the thiopyrylium salt is a 2,4-diphenyl, 6-methyl thiopyrylium salt.
Claim 5
Dependent Claim
15 words
A photocurable composition in accordance with claim 1 where the thiopyrylium salt is a tetrafluoroborate.
Claim 6
Dependent Claim
15 words
A photocurable composition in accordance with claim 1 where the thiopyrylium salt is a hexafluorophosphate.
Claim 7
Dependent Claim
114 words
The process of curing an epoxy resin which comprises admixing an epoxy resin with 0.1 to 10% by weight of said epoxy resin of a photodecomposable thiopyrylium salt of the formula: ##STR6## where R 1 , R 2 and R 3 are independently selected from the group consisting of hydrogen, alkyl containing 1 to 10 carbon atoms, cycloalkyl containing 5 to 12 carbon atoms, aryl containing 6 to 12 carbon atoms and substituted derivatives thereof, M is a metal or metalloid, X is a halogen radical, a is a whole number equal to 1 to 10 and n is a whole number equal to 1 to 3 and thereafter exposing said admixture to radiation.
Claim 8
Dependent Claim
114 words
The process of curing an epoxy resin which comprises admixing an epoxy resin with 0.1 to 10% by weight of said epoxy resin of a photodecomposable thiopyrylium salt of the formula: ##STR6## where R 1 , R 2 and R 3 are independently selected from the group consisting of hydrogen, alkyl containing 1 to 10 carbon atoms, cycloalkyl containing 5 to 12 carbon atoms, aryl containing 6 to 12 carbon atoms and substituted derivatives thereof, M is a metal or metalloid, X is a halogen radical, a is a whole number equal to 1 to 10 and n is a whole number equal to 1 to 3 and thereafter exposing said admixture to radiation.
Claim 9
Dependent Claim
12 words
The process according to claim 6 wherein the radiation is UV radiation.
Claim 10
Dependent Claim
14 words
The process according to claim 6 wherein the radiation is high energy ionizing radiation.
Claim 11
Dependent Claim
119 words
The process of coating a substrate which comprises admixing an epoxy resin with 0.1 to 10% by weight of said epoxy resin of a photodecomposable thiopyrylium salt of the formula: ##STR7## where R 1 , R 2 and R 3 are independently selected from the group consisting of hydrogen, alkyl containing 1 to 10 carbon atoms, cycloalkyl containing 5 to 12 carbon atoms, aryl containing 6 to 12 carbon atoms and substituted derivatives thereof, M is a metal or metalloid, X is a halogen radical, a is a whole number equal to 1 to 10 and n is a whole number equal to 1 to 3, coating said admixture on the substrate and thereafter exposing said admixture to radiation.
Claim 12
Dependent Claim
119 words
The process of coating a substrate which comprises admixing an epoxy resin with 0.1 to 10% by weight of said epoxy resin of a photodecomposable thiopyrylium salt of the formula: ##STR7## where R 1 , R 2 and R 3 are independently selected from the group consisting of hydrogen, alkyl containing 1 to 10 carbon atoms, cycloalkyl containing 5 to 12 carbon atoms, aryl containing 6 to 12 carbon atoms and substituted derivatives thereof, M is a metal or metalloid, X is a halogen radical, a is a whole number equal to 1 to 10 and n is a whole number equal to 1 to 3, coating said admixture on the substrate and thereafter exposing said admixture to radiation.
Claim 13
Dependent Claim
12 words
The process according to claim 9 wherein the radiation is UV radiation.
Claim 14
Dependent Claim
14 words
The process according to claim 9 wherein the radiation is high energy ionizing radiation.
Claim 15
Dependent Claim
21 words
The cured epoxy resin formed by irradiating the composition according to claim 1 with ultraviolet radiation or high energy ionizing radiation.
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) | 1982-02-12 | 1982-08-14 | 1983-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-12 | 1986-08-14 | 1987-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-12 | 1990-08-14 | 1991-02-13 | $7700.00 | Window Closed / Lapsed |