US5321053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental compositions
Assignee: Kuraray Co Ltd
•
Filing: 1990-02-06
•
Granted: 1994-06-14
•
Expires: 2010-02-06
Abstract
Abstract A dental composition comprising a vinyl monomer containing at least one acidic group in the molecule thereof and an initiator capable of photopolymerizing said monomer by visible light, characterized in that said initiator consisting essentially of: (a) a photosensitizer selected from an alpha -diketone, a quinone and a derivative thereof, and, (b) an accelerator selected from a compound containing at least one mercapto group in the molecule thereof is provided by the present invention.
Inventors
- 👤 Kenichi Hino
- 👤 Junichi Yamauchi
- 👤 Koji Nishida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:21
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: 13
Claim 1
Independent Claim
65 words
A dental composition, comprising: (i) a vinyl monomer containing at least one acidic group selected from the group consisting of: ##STR61## wherein X represents a halogen atom, and (ii) an initiator which photopolymerizes said monomer by visible light, wherein said initiator comprises: (a) an α-diketone and (b) an accelerator which is at least one member selected from the group consisting of 2-mercaptobenzoxazole, 2-mercaptobenzothiazole and 2-mercaptobenzimidazole.
Claim 2
Dependent Claim
65 words
A dental composition, comprising: (i) a vinyl monomer containing at least one acidic group selected from the group consisting of: ##STR61## wherein X represents a halogen atom, and (ii) an initiator which photopolymerizes said monomer by visible light, wherein said initiator comprises: (a) an α-diketone and (b) an accelerator which is at least one member selected from the group consisting of 2-mercaptobenzoxazole, 2-mercaptobenzothiazole and 2-mercaptobenzimidazole.
Claim 3
Dependent Claim
18 words
The dental composition of claim 1, wherein said initiator comprises (a) camphorquinone, and (b) 2-mercaptobenzimidazole, 2-mercaptobenzothiazole, or 2-mercaptobenzoxazole.
Claim 4
Dependent Claim
11 words
The dental composition of claim 1, wherein said initiator comprises camphorquinone.
Claim 5
Dependent Claim
23 words
The dental composition of claim 1, wherein component (i) comprises said vinyl monomer and an ester of a monofunctional or polyfunctional (meth)acrylic acid.
Claim 6
Dependent Claim
18 words
The dental composition of claim 4, wherein said component (i) comprises triethylene glycol dimethylacrylate (3G), or 2,2-bis[4-(3-methacryloyloxypropoxy)phenyl]propane (bis-GMA).
Claim 7
Dependent Claim
18 words
The dental composition of claim 5, wherein said initiator comprises (a) camphorquinone, and (b) 2-mercaptobenzimidazole, 2-mercaptobenzothiazole, or 2-mercaptobenzoxazole.
Claim 8
Dependent Claim
21 words
The dental composition of claim 1, wherein said acidic group is an acidic group selected from the group consisting of ##STR62##
Claim 9
Dependent Claim
26 words
The dental composition of claim 1, wherein a vinyl monomer copolymerizable with said vinyl monomer containing at least one acidic group is incorporated in said composition.
Claim 10
Dependent Claim
9 words
The dental composition of claim 1, comprising a filler.
Claim 11
Dependent Claim
22 words
The composition of claim 1, wherein said vinyl monomer is H 2 C═C(CH 3 )--COO--CH 2 ) 10 --OP(O) (OH) 2 .
Claim 12
Dependent Claim
44 words
A dental composition, comprising: (i) a vinyl monomer containing at least one acidic group, said vinyl monomer being beta-methacryloyloxyethylphenyl phosphoric acid; and (ii) an initiator capable of photopolymerizing said monomer by visible light, wherein said initiator consists essentially of: (a) camphorquinone and (b) 2-mercaptobenzoxazole.
Claim 13
Dependent Claim
44 words
A dental composition, comprising: (i) a vinyl monomer containing at least one acidic group, said vinyl monomer being beta-methacryloyloxyethylphenyl phosphoric acid; and (ii) an initiator capable of photopolymerizing said monomer by visible light, wherein said initiator consists essentially of: (a) camphorquinone and (b) 2-mercaptobenzoxazole.
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) | 1997-06-13 | 1997-12-13 | 1998-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-13 | 2001-12-13 | 2002-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-13 | 2005-12-13 | 2006-06-14 | $7700.00 | Window Closed / Lapsed |