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US4668712A
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Photopolymerizable composition
Assignee: Kuraray Co Ltd
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Filing: 1985-01-07
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Granted: 1987-05-26
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Expires: 2005-01-07
Abstract
Abstract A photopolymerizable composition composed of a polymerizable monomer and an initiator capable of polymerizing said monomer upon exposure to visible light, characterized in that said initiator consists essentially of (a) at least one kind of photosensitizer selected from an alpha -diketone, quinone, and derivatives thereof, and (b) at least one kind of accelerator selected from an aldehyde containing no amino groups and derivatives thereof.
Inventors
- 👤 Kenichi Hino
- 👤 Junichi Yamauchi
- 👤 Koji Nishida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:56
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/46; C08F2/48; C08F2/50; A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887; G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/031
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
56 words
A photopolymerizable composition, which comprises a polymerizable monomer and an initiator capable of polymerizing said monomer upon exposure to visible light, wherein said initiator comprises (a) at least one kind of photosensitizer selected from α-diketone compounds, (b) at least one kind of accelerator selected from an aldehyde containing no amino groups, and (c) an organic peroxide.
Claim 2
Dependent Claim
56 words
A photopolymerizable composition, which comprises a polymerizable monomer and an initiator capable of polymerizing said monomer upon exposure to visible light, wherein said initiator comprises (a) at least one kind of photosensitizer selected from α-diketone compounds, (b) at least one kind of accelerator selected from an aldehyde containing no amino groups, and (c) an organic peroxide.
Claim 3
Dependent Claim
58 words
A photopolymerizable composition as set forth in claim 1, wherein the α-diketone compounds are represented by the following formula: ##STR12## where A denotes an aliphatic hydrocarbon group of 1 to 20 carbon atoms, wherein two of A may be the same or different, and wherein two of A may bond to each other to form a cyclic structure.
Claim 4
Dependent Claim
24 words
A photpolymerizable composition as set forth in claim 2, wherein the photosensitizer is camphorquinone, diacetyl, 2,3-pentanedione, 2,3- or 3,4-hexanedione, or 2,3-, 3,4-, or 4,5-octanedione.
Claim 5
Dependent Claim
79 words
A photopolymerizable composition as set forth in claim 2, wherein the aldehyde is a compound represented by the formula B(CHO) n , where B denotes an acyclic or alicyclic saturated or unsaturated aliphatic hydrocarbon group of 1 to 20 carbon atoms or a monocyclic or polycyclic aromatic hydrocarbon group of 1 to 20 carbon atoms, wherein the hydrocarbon group may have a substituent group of 1 to 20 carbon atoms, and n is an integer of 1 to 3.
Claim 6
Dependent Claim
69 words
A photopolymerizable composition as set forth in claim 4, wherein the aldehyde is alkylmonoaldehyde or alkyldialdehyde of 1 to 20 carbon atoms, polyalkyl ether mono- or dialdehyde of 1 to 20 carbon atoms, or a compound represented by the formula ##STR13## where s is 1 or 2; X denotes an alkyl, alkoxy, or polyalkylether of 1 to 20 carbon atoms; and t is an integer of 0 to 3.
Claim 7
Dependent Claim
20 words
A photopolymerizable composition as set forth in claim 1, wherein the organic peroxide is a diacyl peroxide or peroxy ester.
Claim 8
Dependent Claim
22 words
A photopolymerizable composition as set forth in claim 6, wherein the organic peroxide is benzoyl peroxide, t-butyl perbenzoate, di-t-butyl peroxyisophthalate, or 2,5-dimethyl-2,5-di(benzoylperoxy)hexane.
Claim 9
Dependent Claim
14 words
The photopolymerizable composition as set forth in claim 1, which further comprises a filler.
Claim 10
Dependent Claim
69 words
A photopolymerizable composition for use in dental applications, which comprises a photopolymerizable monomer; an initiator capable of polymerizing said monomer upon exposure to visible light, wherein said initiator comprises (a) at least one kind of photosensitizer selected from α-diketone compounds (b) at least one kind of accelerator selected from an aldehyde containing no amino groups, and (c) an organic peroxide; and from about 20-90% by weight of a filler.
Claim 11
Dependent Claim
69 words
A photopolymerizable composition for use in dental applications, which comprises a photopolymerizable monomer; an initiator capable of polymerizing said monomer upon exposure to visible light, wherein said initiator comprises (a) at least one kind of photosensitizer selected from α-diketone compounds (b) at least one kind of accelerator selected from an aldehyde containing no amino groups, and (c) an organic peroxide; and from about 20-90% by weight of a filler.
Claim 12
Dependent Claim
22 words
The composition of claim 9, wherein said photopolymerizable monomer is contained in an amount of from about 80 to 10% by weight.
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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) | 1990-05-25 | 1990-11-24 | 1991-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-25 | 1994-11-24 | 1995-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-25 | 1998-11-24 | 1999-05-26 | $7700.00 | Window Closed / Lapsed |