Patent US4360693A successfully refreshed from Google Patents.
US4360693A
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1,4-Bis[(3'-methacroyl-2'-hydroxypropoxy)methyl]cyclohexane derivatives thereof
Assignee: SCIENTIFIC PHARMACEUTICALS Inc A CORP OF CA
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Filing: 1981-04-07
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Granted: 1982-11-23
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Expires: 2001-04-07
Abstract
Abstract Dimethacrylates are provided having the following chemical structure: ##STR1## where ##STR2## is a saturated, 6 membered, monocyclic, hydrocarbyl ring system; and R 1 , R 2 and R 3 are the same or different and are hydrogen or alkyl or alkoxy groups having 1 to 12 carbon atoms. These compounds are useful in dental material which cures to form polymes 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 this compound in situ on teeth and a tooth comprising a polymer of this compound.
Inventors
- 👤 Jan A. Orlowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:11
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/26; C08F20/30; A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
47 words
A dimethacrylate of the following chemical structure: ##STR13## where ##STR14## is a saturated, 6 membered, monocyclic, hydrocarbyl ring system; and R 1 , R 2 and R 3 are the same or different and are hydrogen or alkyl or alkoxy groups having 1 to 12 carbon atoms.
Claim 2
Dependent Claim
47 words
A dimethacrylate of the following chemical structure: ##STR13## where ##STR14## is a saturated, 6 membered, monocyclic, hydrocarbyl ring system; and R 1 , R 2 and R 3 are the same or different and are hydrogen or alkyl or alkoxy groups having 1 to 12 carbon atoms.
Claim 3
Dependent Claim
21 words
A dimethyacrylate according to claim 1 wherein R 1 , R 2 and R 3 have 1 to 4 carbon atoms.
Claim 4
Dependent Claim
9 words
A dimethacrylate according to claim 1 which is 1,4-bis[(3'-methacroyl-2'-hydroxypropoxy)methyl]cyclohexane.
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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) | 1985-11-22 | 1986-05-24 | 1986-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-22 | 1990-05-24 | 1990-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-22 | 1994-05-24 | 1994-11-23 | $7700.00 | Window Closed / Lapsed |