Patent US4337349A successfully refreshed from Google Patents.
US4337349A
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Dimethacrylate adducts of glycidyl methacrylate with diesters of bis (hydroxymethyl) tricyclo[5.2.1.02,6] decane and dicarboxylic acids
Assignee: Scientific Pharmaceuticals Inc
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Filing: 1980-06-02
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Granted: 1982-06-29
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Expires: 2000-06-02
Abstract
Abstract Dimethacrylates are provided having the following chemical structure: ##STR1## where n represents a number of 2 to 8; R 1 and R 2 are the same or different and are hydrogen or groups of the formula: ##STR2## where R 3 is an aliphatic, aromatic or cycloaliphatic group having 1 to 14 carbon atoms. These compounds are useful in dental material which cures to form polymers having high mechanical strength, low water sorption, resistance to staining, good color stability when exposed to short-wave radiation (e.g., sunlight) and good chemical resistance to the oral environment. Also provided are a method for polymerizing these compounds in situ on teeth and a tooth comprising polymers of these compounds.
Inventors
- 👤 Jan A. Orlowski
- 👤 David V. Butler
- 👤 Patrick D. Kidd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:54
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; C08F20/36; A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
76 words
A dimethacrylate of the following chemical structure: ##STR17## where n represents a number of 2 to 8; R 1 and R 2 are the same or different and are hydrogen or one or more groups of the formula: ##STR18## where R 3 is an aliphatic group of 1-14 carbon atoms, aromatic group of 6-14 carbon atoms or cycloaliphatic having 3 to 14 carbon atoms, and at least one of R 1 and R 2 is ##STR19##
Claim 2
Dependent Claim
76 words
A dimethacrylate of the following chemical structure: ##STR17## where n represents a number of 2 to 8; R 1 and R 2 are the same or different and are hydrogen or one or more groups of the formula: ##STR18## where R 3 is an aliphatic group of 1-14 carbon atoms, aromatic group of 6-14 carbon atoms or cycloaliphatic having 3 to 14 carbon atoms, and at least one of R 1 and R 2 is ##STR19##
Claim 3
Dependent Claim
24 words
A dimethacrylate according to claim 1 wherein R 3 is an aromatic group of 6-14 carbon atoms which aromatic group is a haloaryl group.
Claim 4
Dependent Claim
16 words
A dimethacrylate according to claim 2 wherein R 3 is haloaryl and the haloaryl is chloroaryl.
Claim 5
Dependent Claim
11 words
A dimethacrylate according to claim 1 wherein R 3 is alkyl.
Claim 6
Dependent Claim
11 words
A dimethacrylate according to claim 4 wherein R 3 is butyl.
Claim 7
Dependent Claim
16 words
A dimethacrylate according to claim 1 wherein R 1 is hydrogen and R 2 is ##STR20##
Claim 8
Dependent Claim
15 words
A dimethacrylate according to claim 1 wherein R 1 and R 2 are both ##STR21##
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) | 1985-06-28 | 1985-12-28 | 1986-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-28 | 1989-12-28 | 1990-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-28 | 1993-12-28 | 1994-06-29 | $7700.00 | Window Closed / Lapsed |