US5037473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Denture liners
Assignee: Individual
•
Filing: 1989-04-18
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Granted: 1991-08-06
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Expires: 2009-04-18
Abstract
Abstract A denture liner composition is provided comprising a methacrylate polymer and/or copolymer in powder form to be wetted by a liquid composition containing dimethacrylate, butyl methacrylate, and long chain methacrylate monomers, the mixture setting upon wetting and being polymerized by visible light and chemical action. A method for using the composition in denture liner formation is also provided.
Inventors
- 👤 Joseph M. Antonucci
- 👤 Robert E. Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:12
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/0025; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
200 words
A polymerizable composition for relining dentures comprising: a powder part comprising a methacrylate polymer selected from the group consisting of polymers of methyl methacrylate, ethyl methacrylate and mixtures thereof and benzoyl peroxide as a chemical initiator; and a liquid part comprising a dimethacrylate monomer, a butyl methacrylate monomer, a long chain methacrylate monomer having a chain length of from 6 to 20 carbons, a polymerizable plasticizer, N,N-dimethyl toluidine as a chemical activator, a visible light initiator selected from the group consisting of camphoroquinone, benzyl and mixtures thereof and 4 ethyl N,N-dimethyl amino benzoate as a combined light and chemical initiator, wherein said powder part contains 10 to 99.5% by weight of said methacrylate polymer and 0.5 to 9.0% by weight of said chemical initiator, and said liquid part contains 10 to 80% by weight of said dimethyacrylate monomer, 10 to 50% by weight of said butyl methacrylate monomer, 10 to 40% by weight of said long chain methacrylate monomer, 0 to 69.5% by weight of said polymerizable plasticizer, 0.2 to 1.0% by weight of said chemical activator, 0.1 to 0.5% by weight of said visible light initiator and 0.2 to 1.0% by weight of said combined light and chemical initiator.
Claim 2
Dependent Claim
200 words
A polymerizable composition for relining dentures comprising: a powder part comprising a methacrylate polymer selected from the group consisting of polymers of methyl methacrylate, ethyl methacrylate and mixtures thereof and benzoyl peroxide as a chemical initiator; and a liquid part comprising a dimethacrylate monomer, a butyl methacrylate monomer, a long chain methacrylate monomer having a chain length of from 6 to 20 carbons, a polymerizable plasticizer, N,N-dimethyl toluidine as a chemical activator, a visible light initiator selected from the group consisting of camphoroquinone, benzyl and mixtures thereof and 4 ethyl N,N-dimethyl amino benzoate as a combined light and chemical initiator, wherein said powder part contains 10 to 99.5% by weight of said methacrylate polymer and 0.5 to 9.0% by weight of said chemical initiator, and said liquid part contains 10 to 80% by weight of said dimethyacrylate monomer, 10 to 50% by weight of said butyl methacrylate monomer, 10 to 40% by weight of said long chain methacrylate monomer, 0 to 69.5% by weight of said polymerizable plasticizer, 0.2 to 1.0% by weight of said chemical activator, 0.1 to 0.5% by weight of said visible light initiator and 0.2 to 1.0% by weight of said combined light and chemical initiator.
Claim 3
Dependent Claim
20 words
A composition according to claim 1 wherein said powder part further comprises inorganic or organic filler materials or mixtures thereof.
Claim 4
Dependent Claim
33 words
A compound according to claim 1 wherein said dimethacrylate monomer in said liquid part is selected from the group consisting of bisphenol a dimethacrylate, ethoxylated bisphenol dimethacrylate monomer, urethane dimethacrylate, and mixtures thereof.
Claim 5
Dependent Claim
31 words
A composition according to claim 1 wherein said butyl methacrylate monomer in said liquid part is selected from the group consisting of n-butyl methacrylate monomer, iso-butyl methacrylate monomer, and mixtures thereof.
Claim 6
Dependent Claim
35 words
A composition according to claim 1 wherein said long chain methacrylate monomer in said liquid part is selected from the group consisting of lauryl methacrylate monomer, stearyl methacrylate monomer, iso-bornyl methacrylate monomer, and mixtures thereof.
Claim 7
Dependent Claim
30 words
A composition according to claim 1 wherein said polymerizable plasticizer in said liquid part is selected from the group consisting of dimethyl maleate, diethyl maleate, dibutyl fumarate, and mixtures thereof.
Claim 8
Dependent Claim
27 words
A composition according to claim 2 wherein said inorganic filler materials are selected from the group consisting of fumed silica, calcium-sodium metaphosphate, micro glasses, and mixtures thereof.
Claim 9
Dependent Claim
24 words
A composition according to claim 1 wherein the particle size of the said powder part is between about 5 microns and about 100 microns.
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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) | 1994-08-05 | 1995-02-04 | 1995-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-05 | 1999-02-04 | 1999-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-05 | 2003-02-04 | 2003-08-06 | $7700.00 | Window Closed / Lapsed |