Patent US4064027A successfully refreshed from Google Patents.
US4064027A
Expired / Lapsed
US
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UV curable composition
Assignee: Dow Silicones Corp
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Filing: 1973-09-28
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Granted: 1977-12-20
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Expires: 1993-09-28
Abstract
Abstract A composition curable upon exposure to ultraviolet light is disclosed which consists essentially of a vinyl-containing siloxane and siloxane-containing, silicon-bonded hydrogen atoms. A mercaptofunctional silicone can be employed in the composition as a cure accelerator. Another composition curable upon exposure to ultraviolet light which is disclosed consists essentially of a mercaptofunctional siloxane and a vinyl-containing siloxane.
Inventors
- 👤 George A. L. Gant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:21
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/28; C08K; C08K5/00; C08K5/0008; C08K5/0025; C08K5/04; C08K5/07; C08L; C08L83/00; C08L83/04; C08L83/08; D; D21; D21H; D21H19/00; D21H19/10; D21H19/14; D21H19/24; D21H19/32; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/46; C08G; C08G77/00; C08G77/04; C08G77/045; C08G77/12; C08G77/20; C08G77/22; C08G77/24; C08G77/28; C08G77/42; C08G77/44; C08G77/70; C08J2383/00
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
141 words
A composition, curable upon exposure to ultraviolet light, which consists essentially of A. a siloxane consisting essentially of from 0.5 to 100 mole percent of vinyl containing siloxane units of the general formula (CH 2 =CH)R n SiO.sub.(3-n/2) wherein R is a monovalent hydrocarbon or monovalent halogenated hydrocarbon radical and n has a value from 0 to 2, any non-vinyl containing siloxane units present having the general formula R' m SiO.sub.(4-m/2) wherein R' is a monovalent hydrocarbon or monovalent halogenated hydrocarbon radical and m has a value from 0 to 3, B. a siloxane containing at least one silicon bonded hydrogen atom, the ratio of silicon bonded vinyl groups in (A) to the silicon bonded hydrogen atoms in (B) being in the range of 1:100 to 100:1, and (C) a photosensitizing amount of 0.01 to 20 percent by weight a photosensitizer.
Claim 2
Dependent Claim
141 words
A composition, curable upon exposure to ultraviolet light, which consists essentially of A. a siloxane consisting essentially of from 0.5 to 100 mole percent of vinyl containing siloxane units of the general formula (CH 2 =CH)R n SiO.sub.(3-n/2) wherein R is a monovalent hydrocarbon or monovalent halogenated hydrocarbon radical and n has a value from 0 to 2, any non-vinyl containing siloxane units present having the general formula R' m SiO.sub.(4-m/2) wherein R' is a monovalent hydrocarbon or monovalent halogenated hydrocarbon radical and m has a value from 0 to 3, B. a siloxane containing at least one silicon bonded hydrogen atom, the ratio of silicon bonded vinyl groups in (A) to the silicon bonded hydrogen atoms in (B) being in the range of 1:100 to 100:1, and (C) a photosensitizing amount of 0.01 to 20 percent by weight a photosensitizer.
Claim 3
Dependent Claim
25 words
A composition as defined in claim 1 wherein R contains from 1 to 30 carbon atoms, and R' contains from 1 to 30 carbon atoms.
Claim 4
Dependent Claim
25 words
A composition as defined in claim 2 wherein n has an average value of about 1, and m has an average value of about 2.
Claim 5
Dependent Claim
41 words
A composition as defined in claim 3 wherein R is selected from the group consisting of the methyl, ethyl, phenyl, chloropropyl and 3,3,3-trifluoropropyl radicals, and R' is selected from the group consisting of the methyl, ethyl, phenyl, chloropropyl and 3,3,3-trifluoropropyl radicals.
Claim 6
Dependent Claim
19 words
A composition as defined in claim 4 wherein R is a methyl radical and R' is a methyl radical.
Claim 7
Dependent Claim
22 words
A composition as defined in claim 5 wherein siloxane (A) is composed of 100 mole percent of the vinyl containing siloxane units.
Claim 8
Dependent Claim
30 words
A composition as defined in claim 1 wherein siloxane (A) is a trimethylsilyl endblocked siloxane composed of vinylmethylsiloxane units and dimethylsiloxane units, and siloxane (B) is a trimethylsilyl endblocked methylhydrogensiloxane.
Claim 9
Dependent Claim
30 words
A composition as defined in claim 1 wherein siloxane (A) is a vinyldimethylsilyl endblocked siloxane composed of vinylmethylsiloxane units and dimethylsiloxane units, and siloxane (B) is a trimethylsilyl endblocked methylhydrogensiloxane.
Claim 10
Dependent Claim
23 words
A composition as defined in claim 1 wherein siloxane (A) is a mixture of vinylmethylcyclosiloxanes, and siloxane (B) is a trimethylsilyl endblocked methylhydrogensiloxane.
Claim 11
Dependent Claim
25 words
A composition as defined in claim 1 which also contains (D) a mercaptofunctional silicone in an amount sufficient to accelerate the cure of the composition.
Claim 12
Dependent Claim
109 words
A composition as defined in claim 10 wherein (D) is a silane having the general formula [(HS) p R"'] q --R"" s SiX 4-q-s wherein R"' is a divalent or trivalent hydrocarbon radical one bond of which is attached to the silicon atom and the other bonds are attached to the mercapto groups, p has a value of 1 when R"' is divalent and a value of 2 when R"' is trivalent, q has a value of 1 or 2, R"" is a monovalent hydrocarbon radical, s has a value from 0-3, X is a hydrolyzable group, and the sum of q and s is from 1 to 4.
Claim 13
Dependent Claim
28 words
A composition as defined in claim 11 wherein R"' is a propylene radical, p is 1, q is 1, s is 0, and X is a methoxy group.
Claim 14
Dependent Claim
135 words
A composition as defined in claim 10 wherein (D) is a siloxane having the general formula [(HS) p R"'] q R"" v SiO.sub.(4-q-v/2) wherein R"' is a divalent or trivalent hydrocarbon radical one bond of which is attached to the silicon atom and the other bonds are attached to the mercapto groups, p has a value of 1 when R"' is divalent and a value of 2 when R"' is trivalent, q has a value of 1 or 2, R"" is a monovalent hydrocarbon radical, v has a value from 0-2, and the sum of q and v is from 1 to 3, any other siloxane units present in (D) having the general formula Q t SiO.sub.(4-t/2) wherein Q is a monovalent hydrocarbon or monovalent halogenated hydrocarbon radical, and t has a value from 0-3.
Claim 15
Dependent Claim
36 words
A composition as defined in claim 13 wherein R"' is a propylene radical, p is 1, q is 1, R"" is a methyl radical, v is 1, Q is a methyl radical, and t is 3.
Claim 16
Dependent Claim
42 words
A composition, curable upon exposure to ultraviolet light, which consists essentially of 1. a siloxane consisting essentially of from 0.1 to 100 mole percent of mercaptopropylsilsesquioxane units, any other siloxane units present in (1) being methylsilsesquioxane, propylsilsesquioxane, dimethylsiloxane and trimethylsiloxane units, and
Claim 17
Dependent Claim
42 words
A composition, curable upon exposure to ultraviolet light, which consists essentially of 1. a siloxane consisting essentially of from 0.1 to 100 mole percent of mercaptopropylsilsesquioxane units, any other siloxane units present in (1) being methylsilsesquioxane, propylsilsesquioxane, dimethylsiloxane and trimethylsiloxane units, and
Claim 18
Dependent Claim
41 words
a mixture of vinylmethylcyclosiloxanes, the ratio of the mercapto groups in (1) to the vinyl groups in (2) being in the range of 1:100 to 100:1, and (3) a photosensitizing amount of 0.01 to 20 percent by weight of a photosensitizer.
Claim 19
Dependent Claim
41 words
a mixture of vinylmethylcyclosiloxanes, the ratio of the mercapto groups in (1) to the vinyl groups in (2) being in the range of 1:100 to 100:1, and (3) a photosensitizing amount of 0.01 to 20 percent by weight of a photosensitizer.
Claim 20
Dependent Claim
83 words
A composition, curable upon exposure to ultraviolet light, which consists essentially of 1. a siloxane consisting essentially of from 0.1 to 100 mole percent of mercaptopropylsilsesquioxane units, any other siloxane units present in (1) being propylsilsesquioxane, dimethylsiloxane and trimethylsiloxane units, and 2. a mixture of vinylmethylcyclosiloxanes, the ratio of the mercapto groups in (1) to the vinyl groups in (2) being in the range of 1:100 to 100:1, and (3) a photosensitizing amount of 0.01 to 20 percent by weight of a photosensitizer.
Claim 21
Dependent Claim
83 words
A composition, curable upon exposure to ultraviolet light, which consists essentially of 1. a siloxane consisting essentially of from 0.1 to 100 mole percent of mercaptopropylsilsesquioxane units, any other siloxane units present in (1) being propylsilsesquioxane, dimethylsiloxane and trimethylsiloxane units, and 2. a mixture of vinylmethylcyclosiloxanes, the ratio of the mercapto groups in (1) to the vinyl groups in (2) being in the range of 1:100 to 100:1, and (3) a photosensitizing amount of 0.01 to 20 percent by weight of a photosensitizer.
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) | 1980-12-19 | 1981-06-20 | 1981-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-19 | 1985-06-20 | 1985-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-19 | 1989-06-20 | 1989-12-20 | $7700.00 | Window Closed / Lapsed |