EP0155812A2
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Dental compositions
Assignee: Kuraray Co Ltd
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Filing: 1985-03-12
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Granted: —
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Expires: 2005-03-12
Abstract
Abstract A dental composition comprises a vinyl monomer containing at least one acidic group in the molecule and an initiator capable of photopolymerizing the monomers by visible light, in which the initiator comprises (a) a photosen- s i tizerthat is an α-diketone or a quinone or a derivative of an a-diketone or a quinone, and (b) an accelerator containing at least one mercapto group in the molecule.
Inventors
- 👤 Kenichi Hino
- 👤 Junichi Yamauchi
- 👤 Koji Nishida
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 18:29
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/46; C08F2/48; C08F2/50; A; A61; A61K; A61K6/00; A61K6/60; A61K6/62; A61K6/70; A61K6/71; A61K6/77
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
66 words
A dental composition comprising a vinyl monomer containing at least one acidic group in the molecule and an initiator capable of photopolymerizing the monomer by visible light, characterized in that the initiator consists essentially of a photosensitizer that is an a-diketone, a quinone or a derivative of an a-diketone or a quinone, together with an accelerator that contains at least one mercapto group in the molecule.
Claim 2
Dependent Claim
66 words
A dental composition comprising a vinyl monomer containing at least one acidic group in the molecule and an initiator capable of photopolymerizing the monomer by visible light, characterized in that the initiator consists essentially of a photosensitizer that is an a-diketone, a quinone or a derivative of an a-diketone or a quinone, together with an accelerator that contains at least one mercapto group in the molecule.
Claim 3
Dependent Claim
89 words
A composition according to claim 1 in which the photosensitizer is a compound represented by the general formula: where A represents a C 1-20 aliphatic hydrocarbon residue and any two As may be the same or different or any two As may be combined with one another to form a cyclic structure; and A' represents 2, 3 .r 4 hydrogen atoms, a C 1-4 alkoxy group or a C 1-20 aliphatic hydrocarbon group, and if there is more than one A', the A's may be the same or different.
Claim 4
Dependent Claim
49 words
A composition according to claim 1 or 2 in which the accelerator is of the general formula B - SH in which B represents (a) a substituted or unsubstituted aliphatic C 1-40 hydrocarbon group or (b) a substituted or unsubstituted aromatic hydrocarbon group having up to 40 carbon atoms.
Claim 5
Dependent Claim
95 words
A composition according to claim 1 or 2 in which the accelerator is of the general formula where D forms a 5- or 6-membered ring together with the residue and is bound through a single bond or a double bond or is composed of 2 or 3 carbon atoms forming a part of 'one aromatic ring, or is composed of one nitrogen atom bound to one carbon atom; and X represents -O-, -S-, =C-, , or NR where R is H or C 1-4 alkyl; or NR where R is H or C 1-4 alkyl.
Claim 6
Dependent Claim
36 words
A composition according to claim 1 or 2 in which the accelerator is of the general formula where E represents a phenyl group, which optionally contains a C 1-20 substituent, or a C 1-20 alkyl group.
Claim 7
Dependent Claim
25 words
A dental composition according to any one of claims 1 to 5 in which the acidic group in the vinyl monomer is a or group.
Claim 8
Dependent Claim
26 words
A composition according to any one of claims 1 to 6 including a vinyl monomer copolymerizable with the vinyl monomer containing at least one acidic group.
Claim 9
Dependent Claim
16 words
A composition according to any one of claims 1 to 7 that also contains a filler.
Claim 10
Dependent Claim
59 words
A kit for restoration of a tooth comprising a combination of (1) a dental composition comprising a vinyl monomer containing at least one acidic group in the molecule and an initiator and an acccelerator as defined in claim 1, and (2) a dental filling composition comprising a polymerizable monomer, an initiator capable of polymerizing the monomer and a filler.
Claim 11
Dependent Claim
21 words
A kit according to claim 9 in which the accelerator is an aldehyde containing no amino group or a derivative thereof.
Claim 12
Dependent Claim
26 words
A kit according to claim 9 or 10 in which the initiator is a redox type initiator consisting essentially of an organic peroxide and an amine.
References Cited (Backward Citations)
No citation records indexed.
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