US4551486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interpenetrating polymer network compositions
Assignee: Dentsply Research and Development Corp
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Filing: 1983-11-16
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Granted: 1985-11-05
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Expires: 2003-11-16
Abstract
Abstract This invention provides hardenable compositions useful as construction media for a wide range of applications. Particular utility is found in the dental and medical arts where such compositions are highly suitable for the formation and construction of denture base, denture baseplates, denture liners, denture repair, custom trays, veneering for crowns and bridgework, artificial teeth, veneers and repair for natural teeth, and tooth restorative fillings.
Inventors
- 👤 Louis H. Tateosian
- 👤 W. Donald Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:46
CPC Classifications
C; C08; C08F; C08F265/00; C08F265/04; A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; C08F291/00; Y; Y10; Y10S; Y10S525/00; Y10S525/903
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
80 words
A polymerizable composite composition comprising: a. about 10 to about 70 weight percent multifunctional vinyl crosslinking composition, b. about 3 to about 70 weight percent of crosslinked polymer in the form of discrete particles having average cross-sections up to about 500 microns and being swellable in said composite composition, c. about 3 to about 80 weight percent of inorganic filler comprising silanated silica and d. vinyl functional silane monomer in an amount of about 0.001 to about 2 weight percent.
Claim 2
Dependent Claim
80 words
A polymerizable composite composition comprising: a. about 10 to about 70 weight percent multifunctional vinyl crosslinking composition, b. about 3 to about 70 weight percent of crosslinked polymer in the form of discrete particles having average cross-sections up to about 500 microns and being swellable in said composite composition, c. about 3 to about 80 weight percent of inorganic filler comprising silanated silica and d. vinyl functional silane monomer in an amount of about 0.001 to about 2 weight percent.
Claim 3
Dependent Claim
69 words
The polymerizable composite composition of claim 1 wherein said multifunctional vinyl crosslinking composition is difunctional acrylic crosslinking monomer present in an amount of about 20 to about 60 weight percent, said crosslinked polymer in the form of discrete particles are present in an amount of about 5 to about 60 weight percent, and said inorganic filler is present in an amount of about 5 to about 50 weight percent.
Claim 4
Dependent Claim
87 words
The polymerizable composite composition of claim 1 wherein said multifunctional vinyl crosslinking composition is difunctional acrylic crosslinking monomer present in an amount of about 30 to about 65 weight percent, said crosslinked polymer in the form of discrete particles is present in an amount of about 8 to about 55 weight percent, said inorganic filler is present in an amount of about 8 to about 30 weight percent and said vinyl functional silane monomer is present in an amount of about 0.01 to about 1.5 weight percent.
Claim 5
Dependent Claim
49 words
The polymerizable composite composition of claim 3 wherein said filler comprises inorganic filler chosen from the group consisting of pyrogenic silica, precipitated silica, and fragmented silica gel and mixtures thereof and said vinyl functional silane monomer is present in an amount of about 0.05 to about 1 weight percent.
Claim 6
Dependent Claim
65 words
A polymerizable composite composition comprising: a. multifunctional crosslinking composition, b. crosslinked polymer in the form of discrete particles having average cross-sections up to about 500 microns and being swellable in said composite composition, c. silanated inorganic filler in an amount of about 3 to about 80 weight percent, and d. vinyl functional silane monomer in an amount of about 0.001 to about 2 weight percent.
Claim 7
Dependent Claim
65 words
A polymerizable composite composition comprising: a. multifunctional crosslinking composition, b. crosslinked polymer in the form of discrete particles having average cross-sections up to about 500 microns and being swellable in said composite composition, c. silanated inorganic filler in an amount of about 3 to about 80 weight percent, and d. vinyl functional silane monomer in an amount of about 0.001 to about 2 weight percent.
Claim 8
Dependent Claim
15 words
The polymerizable composite of claim 5 wherein said filler is silanated micro-fine amorphous silicone dioxide.
Claim 9
Dependent Claim
69 words
The polymerizable composite composition of claim 5 wherein said multifunctional vinyl crosslinking composition is difunctional acrylic crosslinking monomer present in an amount of about 20 to about 60 weight percent, said crosslinked polymer in the form of discrete particles is present in an amount of about 5 to about 60 weight percent, and said inorganic filler is present in an amount of about 5 to about 50 weight percent.
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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) | 1988-11-04 | 1989-05-06 | 1989-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-04 | 1993-05-06 | 1993-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-04 | 1997-05-06 | 1997-11-05 | $7700.00 | Window Closed / Lapsed |