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US5886064A
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Fine-grained polymerizable compositions flowable under pressure or shear stress
Assignee: Ivoclar AG
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Filing: 1995-12-06
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Granted: 1999-03-23
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Expires: 2015-12-06
Abstract
Abstract A granular, polymerizable composition which contains at least one polymerizable monomer and/or oligomer and a polymerization initiator and optionally an accelerator and at least 70% by wt. filler and additionally 0.5 to 28% by wt. dendrimer and which becomes flowable under compressive or shear stress. The composition can be packed in similar manner to amalgam and is particularly suitable as dental material or for the production of a dental material.
Inventors
- 👤 Volker Rheinberger
- 👤 Norbert Moszner
- 👤 Thomas Voelkel
- 👤 Peter Burtscher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:07
CPC Classifications
C; C08; C08F; C08F283/00; A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887; C08F290/00; C08F290/02; C08F290/06; C08L; C08L101/00; C08L101/005; Y; Y10; Y10S; Y10S424/00; Y10S424/16
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
75 words
A granular, polymerizable composition comprising at least one polymerizable monomer and/or oligomer, a polymerization initiator, at least one filler, and a dendrimer, wherein said composition contains at least 70% by wt. of said filler, and 0.5 to 28% by wt. of said dendrimer and becomes flowable under pressure and/or shear stress and wherein said dendrimer is selected from the group consisting of a propylenimine, a polyether, a polythioether, a polyphenylenamide, and a polyphenylene ester dendrimer.
Claim 2
Dependent Claim
75 words
A granular, polymerizable composition comprising at least one polymerizable monomer and/or oligomer, a polymerization initiator, at least one filler, and a dendrimer, wherein said composition contains at least 70% by wt. of said filler, and 0.5 to 28% by wt. of said dendrimer and becomes flowable under pressure and/or shear stress and wherein said dendrimer is selected from the group consisting of a propylenimine, a polyether, a polythioether, a polyphenylenamide, and a polyphenylene ester dendrimer.
Claim 3
Dependent Claim
15 words
A granular, polymerizable composition according to claim 1, wherein the dendrimer has polymerizable terminal groups.
Claim 4
Dependent Claim
29 words
A granular, polymerizable composition according to claim 2, wherein the dendrimer comprises terminal groups selected from the group consisting of meth(acrylic), allyl, styryl, vinyl, vinyloxy, and vinylamine terminal groups.
Claim 5
Dependent Claim
23 words
A granular, polymerizable composition according to claim 1, which contains as the polymerizable monomer and/or oligomer one or more mono- or polyfunctional methacrylates.
Claim 6
Dependent Claim
23 words
A granular, polymerizable composition according to claim 1, which contains 0.5 to 28% by wt. of at least one polymerizable monomer and/or oligomer.
Claim 7
Dependent Claim
96 words
A granular, polymerizable composition according to claim 1, wherein the filler is selected from the group consisting of amorphous, pyrogenic and/or precipitated silica with a BET surface area of 30 to 300 m 2 /g, zinc oxide (ZnO), X-ray opaque glass, barium sulphate, ytterbium fluoride and/or amorphous, spherical particles of silica with up to 20 mol % of an oxide of at least one element from Groups I, II, III and IV of the Periodic Table with a refractive index of 1.50 to 1.58 and with an average primary particle size of 0.1 to 1.0 μm.
Claim 8
Dependent Claim
16 words
A granular, polymerizable composition according to claim 1, which contains up to 92% by wt. filler.
Claim 9
Dependent Claim
31 words
A granular, polymerizable composition according to claim 1, wherein the initiator for photopolymerization is a photoinitiator selected from the group consisting of benzophenone, a benzophenone derivative, benzoin, and a benzoin derivative.
Claim 10
Dependent Claim
16 words
A granular, polymerizable composition according to claim 8, wherein the initiator for photopolymerization is an α-diketone.
Claim 11
Dependent Claim
25 words
A granular, polymerizable composition according to claim 1, wherein the initiator is a cold polymerization initiator comprising benzoyl or lauryl peroxide and additionally an amine.
Claim 12
Dependent Claim
15 words
A granular, polymerizable composition according to claim 1, wherein said composition further comprises an accelerator.
Claim 13
Dependent Claim
12 words
A dental material comprising a granular polymerizable composition according to claim 1.
Claim 14
Dependent Claim
28 words
A dental material according to claim 12, wherein the dental material is selected from the group consisting of artificial teeth, inlays, onlays, crowns, bridges, and tooth filling materials.
Claim 15
Dependent Claim
59 words
A granular, polymerizable composition comprising at least one polymerizable monomer and/or oligomer, a polymerization initiator, at least one filler, and a dendrimer, wherein said composition contains at least 70% by wt. of said filler, and 0.5 to 28% by wt. of said dendrimer and becomes flowable under pressure and/or shear stress, wherein said dendrimer has an ideally-branched dendrimer structure.
Claim 16
Dependent Claim
59 words
A granular, polymerizable composition comprising at least one polymerizable monomer and/or oligomer, a polymerization initiator, at least one filler, and a dendrimer, wherein said composition contains at least 70% by wt. of said filler, and 0.5 to 28% by wt. of said dendrimer and becomes flowable under pressure and/or shear stress, wherein said dendrimer has an ideally-branched dendrimer structure.
Claim 17
Dependent Claim
12 words
A granular, polymerizable composition according to claim 9 further comprising an amine.
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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) | 2002-03-22 | 2002-09-21 | 2003-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-03-22 | 2006-09-21 | 2007-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-03-22 | 2010-09-21 | 2011-03-23 | $7700.00 | Window Closed / Lapsed |