Patent EP0150952A2 successfully refreshed from Google Patents.
EP0150952A2
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Photopolymerizable composition
Assignee: Kuraray Co Ltd
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Filing: 1985-01-15
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Granted: —
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Expires: 2005-01-15
Abstract
Abstract A photopolymerizable composition is composed of a polymerizable monomer and an initiator capable of polymerizing said monomer upon exposure to visible light. The initiator consists essentially of (a) at least one photosensitizer selected from an a-diketone, quinone, and their derivatives, (b) at least one accelerator selected from aldehyde containing no amino groups and its derivatives, and possibly (c) an organic peroxide. A filler may be included in the composition, especially if it is for dental use.
Inventors
- 👤 Kenichi Hino
- 👤 Junichi Yamauchi
- 👤 Koji Nishida
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 22:50
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
59 words
A photopolymerizable composition composed of a polymerizable monomer and an initiator capable of polymerizing the monomer upon exposure to visible light, characterized in that the initiator consists essentially of (a) at least one photosensitizer selected from an a-diketone, a quinone, and their derivatives, and (b) at least one accelerator selected from aldehydes containing no amino groups, and their derivatives.
Claim 2
Dependent Claim
59 words
A photopolymerizable composition composed of a polymerizable monomer and an initiator capable of polymerizing the monomer upon exposure to visible light, characterized in that the initiator consists essentially of (a) at least one photosensitizer selected from an a-diketone, a quinone, and their derivatives, and (b) at least one accelerator selected from aldehydes containing no amino groups, and their derivatives.
Claim 3
Dependent Claim
20 words
A composition as claimed in claim 1, in which the initiator comprises a photosensitizer, an accelerator, and an organic peroxide.
Claim 4
Dependent Claim
97 words
A photopolymerizable composition as claimed in claim 1 or 2, in which the a-diketone, quinone and their derivatives are compounds represented by the following formulae: where A denotes an aliphatic hydrocarbon group of 1 to 20 carbon atoms, and any two of A may be the same or different, and any two of A may be bonded to one another to form a cyclic structure; and A' denotes 2 to 4 hydrogen atoms or an aliphatic hydrocarbon group or groups having 1 to 20 carbon atoms, and any two of A' may be the same or different.
Claim 5
Dependent Claim
31 words
A composition as claimed in claim 3, in which the photosensitizer is one or more of anthraquinone, naphthoquinone, acenaphthenequinone, phenanthrenequinone, and their derivatives having one or more C 1-20 alkyl substituents.
Claim 6
Dependent Claim
26 words
A composition as claimed in claim 3, in which the photosensitizer is one or more of camphorquinone, diacetyl, 2,3-pentanedione, 2,3-or 3,4-hexanedione, or 2,3-, 3,4- or 4,5-octanedione.
Claim 7
Dependent Claim
76 words
A composition as claimed in any one of claims 1 to 5, in which the aldehyde or its derivative is a compound - represented by the formula B(CHO) n , where n is 1, 2 or 3 and B is 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, optionally having a C -20 substituent.
Claim 8
Dependent Claim
57 words
A composition as claimed in claim 6, in which the aldehyde is a C 1-20 alkylmoaoaldehyde or alkyldialdehyde, a C 1-20 polyalkyl ether mono- or dialdehyde, or a compound represented by the formula: (where s is 1 or 2; X is a C 1-20 alkyl, alkoxy or polyalkylether group; and t is 0, 1, 2 or 3.
Claim 9
Dependent Claim
33 words
A composition as claimed in claim 2, or in any one of claims 3 to 7 as appendant to claim 2, in which the organic peroxide is a diacyl peroxide or peroxy ester.
Claim 10
Dependent Claim
21 words
A composition as claimed in claim 8, in which the organic peroxide is benzoyl peroxide, t-butyl perbenzoate, di-t-butyl peroxyisophthalate, or 2,5-dimethyl-2,5-di(benzoylperoxy)hexane.
Claim 11
Dependent Claim
17 words
A composition as claimed in any one of claims 1 to 9, that further comprises a filler.
Claim 12
Dependent Claim
14 words
A composition as claimed in claim 10, for use as a dental filling material.
References Cited (Backward Citations)
No citation records indexed.
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