Patent US4394494A successfully refreshed from Google Patents.
US4394494A
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Dental filling material
Assignee: Lion Corp
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Filing: 1981-06-22
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Granted: 1983-07-19
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Expires: 2001-06-22
Abstract
Abstract A dental filling material capable of forming a cured product with improved physical properties comprises a polymerizable monomer to be polymerized upon application, characterized in that the polymerizable monomer comprises a reaction product of two moles of a compound selected from the group consisting of hydroxyalkyl diacrylates and hydroxyalkyl dimethacrylates with on mole of an organic diisocyanate alone or in admixture with another polymerizable monomer. The reaction product may be bis(1,3-dimethacryloyloxy-2-propanetriyl)-N,N'-hexamethylene dicarbamate or bis(1,3-diacryloyloxy-2-propanetriyl)-N,N'-hexamethylene dicarbamate. The reaction product may be used in admixture with trimethylolpropane triacrylate and/or trimethacrylate and (mono-, di- or tri-)ethylene glycol diacrylate and/or dimethacrylate. The reaction product may also be used in admixture with bis-oxyethylenic bisphenol-A diacrylate and/or dimethacrylate and (mono-, di- or tri-)ethylene glycol diacrylate and/or dimethacrylate.
Inventors
- 👤 Mikio Miyake
- 👤 Shinya Kitoh
- 👤 Satoshi Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:06
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/891; A61K6/893; A61K6/887
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
39 words
A polymerizable monomer having the formula: ##STR6## wherein R 1 , R 2 , R 3 and R 4 are each hydrogen or a methyl group and n is equal to a value varying from 2 to 10 .
Claim 2
Dependent Claim
39 words
A polymerizable monomer having the formula: ##STR6## wherein R 1 , R 2 , R 3 and R 4 are each hydrogen or a methyl group and n is equal to a value varying from 2 to 10 .
Claim 3
Dependent Claim
48 words
A dental filling composition, comprising: a polymerizable monomer having the formula I: ##STR7## wherein R 1 , R 2 , R 3 and R 4 are each a hydrogen ora methyl group and n is equal to a value varying from 2 to 10 and a filler material.
Claim 4
Dependent Claim
48 words
A dental filling composition, comprising: a polymerizable monomer having the formula I: ##STR7## wherein R 1 , R 2 , R 3 and R 4 are each a hydrogen ora methyl group and n is equal to a value varying from 2 to 10 and a filler material.
Claim 5
Dependent Claim
17 words
A dental filling composition according to claim 2, wherein said monomer of formula I is bis(1,3-dimethacryloyl-oxy-2-propanetriyl)-N,N'-hexamethylene dicarbamate.
Claim 6
Dependent Claim
17 words
A dental filling composition according to claim 2, wherein said monomer of formula I is bis(1,3-diacryloyloxy-2-propanetriyl)-N,N'-hexamethylene dicarbamate.
Claim 7
Dependent Claim
17 words
A dental filling composition according to claim 2, and further including at least one other polymerizable monomer.
Claim 8
Dependent Claim
46 words
A dental filling composition according to claim 2, wherein said monomer of formula I is present in admixture with another polymerizable monomer, said monomer of formula I being present in an amount of 5 to 80% by weight of the total weight of the polymerizable monomers.
Claim 9
Dependent Claim
33 words
A dental filling composition according to claim 6, wherein said monomer of formula I is present in an amount of 10 to 60% by weight of the total weight of the polymerizable monomers.
Claim 10
Dependent Claim
66 words
A dental filling composition according to claim 2, wherein said monomer of formula I is present in admixture with a polymerizable monomer selected from the group consisting of trimethylolpropane triacrylate, trimethylolpropane trimethacrylate and mixtures thereof, and a polymerizable monomer having the general formula II: ##STR8## wherein R is a hydrogen or a methyl group, and m is equal to a value varying from 1 to 3.
Claim 11
Dependent Claim
31 words
A dental filling composition according to claim 8, wherein said monomer of formula II is selected from the group consisting of triethylene glycol diacrylate, triethylene glycol dimethacrylate and a mixture thereof.
Claim 12
Dependent Claim
89 words
A dental filling composition according to claim 8, wherein said monomer of formula I is present in an amount of 5 to 80% by weight of the total weight of the polymerizable monomers, said monomer selected from the group consisting of trimethylolpropane triacrylate, trimethylolpropane trimethacrylate and a mixture thereof is present in an amount of 10-60% by weight of the total weight of the polymerizable monomers, and said monomer of formula II is present in an amount of 10-60% by weight of the total weight of the polymerizable monomers.
Claim 13
Dependent Claim
89 words
A dental filling composition according to claim 10, wherein said monomer of formula I is present in an amount of 10 to 60% by weight of the total weight of the polymerizable monomers, said monomer selected from the group consisting of trimethylolpropane triacrylate, trimethylolpropane trimethacrylate and a mixture thereof is present in a amount of 15-50% by weight of the total weight of the polymerizable monomers, and said monomer of formula II is present in an amount of 15-50% by weight of the total weight of the polymerizable monomers.
Claim 14
Dependent Claim
80 words
A dental filling composition according to claim 2, wherein said monomer of formula I is present in admixture with a polymerizable monomer having the general formula II: ##STR9## wherein R is a hydrogen or a methyl group, and m is equal to a value varying from 1 to 3, and a polymerizable monomer having the general formula III: ##STR10## wherein R is a hydrogen or a methyl group, and m is equal to a value varying from 1 to 3.
Claim 15
Dependent Claim
17 words
A dental filling composition according to claim 12, wherein said monomer of formula I is bis(1,3-dimethacryloyl-oxy-2-propanetriyl)-N,N'-hexamethylene dicarbamate.
Claim 16
Dependent Claim
17 words
A dental filling composition according to claim 12, wherein said monomer of formula I is bis(1,3-diacryloyloxy-2-propanetriyl)-N,N'-hexamethylene dicarbamate.
Claim 17
Dependent Claim
31 words
A dental filling composition according to claim 12, wherein said monomer of formula II is selected from the group consisting of triethylene glycol diacrylate, triethylene glycol dimethacrylate and a mixture thereof.
Claim 18
Dependent Claim
74 words
A dental filling composition according to claim 12, wherein said monomer of formula I is present in an amount of 5 to 80% by weight of the total weight of the polymerizable monomers, said monomer of formula II is present in an amount of 10-60% by weight of the total weight of the polymerizable monomers, and said monomer of formula III is present in an amount of 10-80% by weight of the polymerizable monomers.
Claim 19
Dependent Claim
78 words
A dental filling composition according to claim 16, wherein said monomer of formula I is present in an amount of 10 to 60% by weight of the total weight of the polymerizable monomers, said monomer of formula II is present in an amount of 10-60% by weight of the total weight of the polymerizable monomers, and said monomer of formula III is present in an amount of 10-60% by weight of the total weight of the polymerizable monomers.
Claim 20
Dependent Claim
56 words
A dental filling composition, comprising: a polymerizable monomer having the formula I: ##STR11## wherein R 1 , R 2 , R 3 and R 4 are each a hydrogen or a methyl group, and n is equal to a value varying from 2 to 10; at least one other polymerizable monomer; a filler; and a catalyst.
Claim 21
Dependent Claim
56 words
A dental filling composition, comprising: a polymerizable monomer having the formula I: ##STR11## wherein R 1 , R 2 , R 3 and R 4 are each a hydrogen or a methyl group, and n is equal to a value varying from 2 to 10; at least one other polymerizable monomer; a filler; and a catalyst.
Claim 22
Dependent Claim
32 words
A dental filling composition according to claim 18, wherein said polymerizable monomer I is present in an amount of 5 to 80% by weight of the total weight of the polymerizable monomers.
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) | 1986-07-18 | 1987-01-17 | 1987-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-18 | 1991-01-17 | 1991-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-18 | 1995-01-17 | 1995-07-19 | $7700.00 | Window Closed / Lapsed |