US4437959A
Expired / Lapsed
US
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Photopolymerizable composition based on epoxy compound
Assignee: Toshiba Corp
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Filing: 1982-09-23
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Granted: 1984-03-20
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Expires: 2002-09-23
Abstract
Abstract A photopolymerizable composition based on an epoxy compound contains as a curing catalyst a combination of an α-ketosilyl compound with an aluminum compound having at least one organic radical directly bonded to the aluminum atom, and further contains as a photosensitizer a benzophenone compound and/or a thioxanthone compound.
Inventors
- 👤 Shuzi Hayase
- 👤 Shuichi Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:13
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/40; C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08G59/70; G; G03; G03F; G03F7/00; G03F7/004; G03F7/075; G03F7/0755
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
98 words
A photopolymerizable composition comprising: an epoxy compound; a curing catalyst including at least one aluminum compound having at least one organic radical directly bonded to the aluminum atom, and at least one α-ketosilyl compound; and at least one photosensitizer selected from the group consisting of benzophenone compounds represented by a formula: ##STR16## (where each R is independently a halo group, an alkyl group, an aromatic group or a substituted aromatic group, an n is an integer from 0 to 5), and thioxanthone compounds represented by a formula: ##STR17## (where R and n have the same meanings as above).
Claim 2
Dependent Claim
98 words
A photopolymerizable composition comprising: an epoxy compound; a curing catalyst including at least one aluminum compound having at least one organic radical directly bonded to the aluminum atom, and at least one α-ketosilyl compound; and at least one photosensitizer selected from the group consisting of benzophenone compounds represented by a formula: ##STR16## (where each R is independently a halo group, an alkyl group, an aromatic group or a substituted aromatic group, an n is an integer from 0 to 5), and thioxanthone compounds represented by a formula: ##STR17## (where R and n have the same meanings as above).
Claim 3
Dependent Claim
32 words
The composition according to claim 1, wherein the aluminum compound is contained in an amount of 0.001 to 5 parts by weight based on 100 parts by weight of the epoxy compound.
Claim 4
Dependent Claim
53 words
The composition according to claim 2, wherein the aluminum compound is selected from the group consisting of trimethoxy aluminum, triethoxy aluminum, triisopropoxy aluminum, triphenoxy aluminum, triparamethylphenoxy aluminum, isopropoxydiethoxy aluminum, tributoxy aluminum, triacetoxy aluminum, aluminum tristearate, aluminum tributylate, aluminum tripropionate, aluminum triisopropionate, tris(acetylacetonato)aluminum, tris(trifluoroacetylacetonato)aluminum, tris(hexafluoroacetylacetonato(aluminum, tris(ethylacetoacetato)aluminum, tris(salicylaldehydato)aluminum, tris(diethyl malonato)aluminum, tris(propylacetoacetato)aluminum, tris(butylacetato)aluminum, tris(dipivaloylmethanato)aluminum, diacetylacetonatodipivaloylmethanatoaluminum, ##STR18##
Claim 5
Dependent Claim
32 words
The composition according to claim 1, wherein the α-ketosilyl compound is contained in an amount of 0.1 to 10 parts by weight based on 100 parts by weight of the epoxy compound.
Claim 6
Dependent Claim
38 words
The composition according to claim 4, wherein the α-ketosilyl compound is represented by a formula: ##STR19## (where each R° is independently a hydrocarbon group or a substituted hydrocarbon group, and n is an integer from 0 to 3).
Claim 7
Dependent Claim
18 words
The composition according to claim 5, wherein the α-ketosilyl compound is selected from the group consisting of: ##STR20##
Claim 8
Dependent Claim
31 words
The composition according to claim 1, wherein the photosensitizer is contained in an amount of 0.05 to 5 parts by weight based on 100 parts by weight of the epoxy resin.
Claim 9
Dependent Claim
18 words
The composition according to claim 7, wherein the benzophenone compound is selected from the group consisting of: ##STR21##
Claim 10
Dependent Claim
20 words
The composition according to claim 7, wherein the thioxanthone compound is a member selected from the group consisting of: ##STR22##
Claim 11
Dependent Claim
17 words
The composition according to any one of claims 1 to 9, further comprising an active proton-containing compound.
Claim 12
Dependent Claim
33 words
A composition according to claim 10, wherein the active proton-containing compound is contained in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of the epoxy compound.
Claim 13
Dependent Claim
22 words
A composition according to claim 11, wherein the active proton-containing compound is selected from the group consisting of water, alcohol and thiol.
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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) | 1987-03-20 | 1987-09-19 | 1988-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-20 | 1991-09-19 | 1992-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-20 | 1995-09-19 | 1996-03-20 | $7700.00 | Window Closed / Lapsed |