US3969499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental adhesive materials containing fluoride compounds
Assignee: Lee Pharmaceuticals Inc
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Filing: 1974-11-19
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Granted: 1976-07-13
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Expires: 1994-11-19
Abstract
Abstract A composition of matter comprising a polymeric reaction product of a hydroxy terminated butadiene prepolymer having an average molecular weight of about 400 to 25,000 and containing 1 to 3 hydroxyl groups per molecule and a polyisocyanate reactant present in an amount to provide from 100 to 1200 percent excess isocyanate groups to hydroxyl groups or active hydrogen sites, and from 1 to 70 percent by weight of a compound containing a fluoride ion. In another, and preferred aspect of the invention, the polyisocyanate reactant is present in an amount to provide from 1.5 to 2.7 isocyanate groups for each hydroxyl group or active hydrogen site, the composition containing an aromatic polyol, such as N,N-bis(2-hydroxypropyl) aniline, and wherein the aromatic polyol comprises at least 42 percent but not more than 60 percent of the hydroxyl components. The compositions are especially useful as dental fissure sealants and as means of applying a fluoride to a tooth surface.
Inventors
- 👤 Henry L. Lee, Jr.
- 👤 Jan A. Orlowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:26
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/69; A; A61; A61K; A61K6/00; A61K6/20; A61K6/30; C08K; C08K3/00; C08K3/32; C08L; C08L75/00; C08L75/04
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
76 words
A composition of matter comprising a polymeric reaction product of a hydroxy terminated butadiene prepolymer having an average molecular weight of about 400 to 25,000 and containing 1 to 3 hydroxyl groups per molecule and a polyisocyanate reactant present in an amount to provide from 1.5 to 2.7 isocyanate groups for each hydroxyl group or active hydrogen site, and from 1 to 70% by weight of a fluoride ion containing compound capable of releasing fluoride ion.
Claim 2
Dependent Claim
76 words
A composition of matter comprising a polymeric reaction product of a hydroxy terminated butadiene prepolymer having an average molecular weight of about 400 to 25,000 and containing 1 to 3 hydroxyl groups per molecule and a polyisocyanate reactant present in an amount to provide from 1.5 to 2.7 isocyanate groups for each hydroxyl group or active hydrogen site, and from 1 to 70% by weight of a fluoride ion containing compound capable of releasing fluoride ion.
Claim 3
Dependent Claim
28 words
A composition of matter as claimed in claim 1 wherein said fluoride ion compound is present in the amount of 5 to 50% by weight of the composition.
Claim 4
Dependent Claim
17 words
A composition of matter as claimed in claim 1 wherein said fluoride ion compound is disodium monofluorophosphate.
Claim 5
Dependent Claim
19 words
A composition of matter as claimed in claim 3 wherein about 5 to 15% of disodium monofluorophosphate is present.
Claim 6
Dependent Claim
17 words
A composition of matter as claimed in claim 3 wherein about 10% of disodium monofluorophosphate is present.
Claim 7
Dependent Claim
80 words
A composition of matter comprising a polymeric reaction product of a hydroxy terminated butadiene prepolymer having an average molecular weight of about 400 to 25,000 and containing 1 to 3 hydroxyl groups per molecule and a polyisocyanate reactant present in an amount to provide from 1.5 to 2.7 isocyanate groups for each hydroxyl group or active hydrogen site, and an aromatic polyol, wherein the aromatic polyol comprises at least 42 but not more than 60 percent of the hydroxyl components.
Claim 8
Dependent Claim
80 words
A composition of matter comprising a polymeric reaction product of a hydroxy terminated butadiene prepolymer having an average molecular weight of about 400 to 25,000 and containing 1 to 3 hydroxyl groups per molecule and a polyisocyanate reactant present in an amount to provide from 1.5 to 2.7 isocyanate groups for each hydroxyl group or active hydrogen site, and an aromatic polyol, wherein the aromatic polyol comprises at least 42 but not more than 60 percent of the hydroxyl components.
Claim 9
Dependent Claim
28 words
A composition of matter as claimed in claim 6 further comprising from 1 to 70% by weight of a fluoride ion containing compound capable of releasing fluoride ion.
Claim 10
Dependent Claim
16 words
A composition of matter as claimed in claim 6 wherein the aromatic polyol is N,N-bis(2-hydroxypropyl) aniline.
Claim 11
Dependent Claim
14 words
A composition of matter as claimed in claim 6 containing a silane coupling agent.
Claim 12
Dependent Claim
28 words
A composition of matter as claimed in claim 7 wherein said fluoride ion compound is present in the amount of 5 to 50% by weight of the composition.
Claim 13
Dependent Claim
17 words
A composition of matter as claimed in claim 7 wherein said fluoride ion compound is disodium monofluorophosphate.
Claim 14
Dependent Claim
19 words
A composition of matter as claimed in claim 11 wherein about 5 to 15% of disodium monofluorophosphate is present.
Claim 15
Dependent Claim
17 words
A composition of matter as claimed in claim 11 wherein about 10% of disodium monofluorophosphate is present.
Claim 16
Dependent Claim
13 words
A composition as claimed in claim 12 wherein the aromatic polyol is N,N-bis(2-hydroxypropyl)aniline.
References Cited (Backward Citations)
US3427366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-13 | 1980-01-12 | 1980-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-13 | 1984-01-12 | 1984-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-13 | 1988-01-12 | 1988-07-13 | $7700.00 | Window Closed / Lapsed |