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US4872936A
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Polymerizable cement mixtures
Assignee: Ernst Muehlbauer KG
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Filing: 1988-05-09
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Granted: 1989-10-10
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Expires: 2008-05-09
Abstract
Abstract The invention concerns polymerizable cement mixtures containing (a) polymerizable unsaturated monomers and/or oligomers and/or prepolymers containing acid groups and/or their reactive acid-derivative groups, (b) reactive fillers that can react with these acids or acid derivatives, and (c) curing agents that can be employed especially in dentistry as improved dental mixtures as well as in medicine.
Inventors
- 👤 Jurgen Engelbrecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:06
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/50; A61K6/54; A61K6/20; A61K6/30; A61K6/80; A61K6/884; A61K6/887; A61K6/889
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
50 words
A polymerizable cement mixture comprising (a) at least one polymerizable unsaturated monomer, oligomer or prepolymer containing an acid group or a reactive acid derivative thereof, (b) at least one finely divided reactive filler that can react ionically with the acids or acid derivative of (a), and (c) a curing agent.
Claim 2
Dependent Claim
50 words
A polymerizable cement mixture comprising (a) at least one polymerizable unsaturated monomer, oligomer or prepolymer containing an acid group or a reactive acid derivative thereof, (b) at least one finely divided reactive filler that can react ionically with the acids or acid derivative of (a), and (c) a curing agent.
Claim 3
Dependent Claim
24 words
A mixture according to claim 1, wherein (a) contains at least two polymerizable groups and at least two acid groups or reactive derivatives thereof.
Claim 4
Dependent Claim
25 words
A mixture according to claim 1, wherein (a) contains at least three polymerizable groups and at least three acid groups or their reactive derivative groups.
Claim 5
Dependent Claim
23 words
A mixture according to claim 1, wherein the polymerizable unsaturated monomer, oligomer or prepolymer of (a) contains acrylic, methacrylic, vinyl and/or styryl groups.
Claim 6
Dependent Claim
19 words
A mixture according to claim 1, wherein the unsaturated monomer, oligomer or prepolymer (a) contains acrylic and/or methacrylic groups.
Claim 7
Dependent Claim
40 words
A mixture according to claim 1, wherein the acid groups of (a) are carboxylic acid radicals, the radicals ##STR18## radicals --SO 2 --H, SO 3 H, --O--SO 3 H, or the radicals ##STR19## wherein R is alkyl, aryl or vinyl.
Claim 8
Dependent Claim
33 words
A mixture according to claim 1, wherein (a) comprises reactive acid derivatives selected from the group consisting of acid halides, anhydrides, or acid amides, nitriles, or esters that hydrolyze readily into the acid.
Claim 9
Dependent Claim
15 words
A mixture according to claim 1, wherein (a) comprises a halophosphoric acid ester of bis-GMA.
Claim 10
Dependent Claim
31 words
A mixture according to claim 1, wherein (a) comprises an oligomeric or prepolymeric backbone to which are bonded both polymerizable unsaturated groups and acid radicals, their salts, or their reactive derivatives.
Claim 11
Dependent Claim
22 words
A mixture according to claim 9, wherein the oligomeric or prepolymeric backbone is a homo- or copolymer of an ethylenically unsaturated monomer.
Claim 12
Dependent Claim
30 words
A mixture according to claim 10, wherein (a) comprises poly(meth)acrylated oligomaleic acid, poly(meth)acrylated polymaleic acid, poly(meth)acrylated poly(meth)acrylic acid, poly(meth)acrylated polycarboxyl-polyphosphonic acid, poly(meth)acrylated polychlorophosphoric acid, poly(meth)acrylated polysulfonate or poly(meth)acrylated polyboric acid.
Claim 13
Dependent Claim
21 words
A mixture according to claim 9, wherein the oligomeric or prepolymeric backbone is a polyester, polyamide, polyether, polysulfone, polyphosphazene or polysaccharide.
Claim 14
Dependent Claim
23 words
A mixture according to claim 1, wherein (a) is a polymerizable unsaturated oligomer or polymer having a molecular weight of at least 500.
Claim 15
Dependent Claim
21 words
A mixture according to claim 1, wherein (a) is a polymerizable unsaturated prepolymer having a molecular weight of at least 1,500.
Claim 16
Dependent Claim
21 words
A mixture according to claim 1, wherein (a) is a polymerizable unsaturated prepolymer having a molecular weight of at most 100,000.
Claim 17
Dependent Claim
21 words
A mixture according to claim 1, wherein (a) is a polymerizable unsaturated prepolymer having a molecular weight of at most 20,000.
Claim 18
Dependent Claim
25 words
A mixture according to claim 1, wherein (a) contains further aldehyde, epoxide, isocyanate, or halotriazine groups in addition to the acid groups and polymerizable groups.
Claim 19
Dependent Claim
28 words
A mixture according to claim 1, additionally containing other polymerizable unsaturated monomers, oligomers and/or prepolymers that do not have acid groups or reactive acid-derivative groups that hydrolyze readily.
Claim 20
Dependent Claim
30 words
A mixture according to claim 1, additionally containing other compounds that have acid groups or their reactive acid-derivative groups that hydrolyze readily but do not have unsaturated and polymerizable groups.
Claim 21
Dependent Claim
31 words
A mixture according to claim 1, wherein the polymerizable compounds that have acid groups or acid derivative groups are present in a proportion of at least 5% of the polymerizable compounds.
Claim 22
Dependent Claim
31 words
A mixture according to claim 1, wherein the polymerizable compounds that have acid groups or acid-derivative groups are present in a portion of about 20% to 60% of the polymerizable compounds.
Claim 23
Dependent Claim
49 words
A mixture according to claim 1, wherein the reactive fillers (b) are metal compounds, glasses or ceramics or zeolites that contain metal compounds, oxidizable metals, and boron nitride, as well as the products derived from sintering mixtures of these metal compounds or of glasses or ceramics that contain them
Claim 24
Dependent Claim
15 words
A mixture according to claim 1, wherein (b) comprises a metal oxide or metal hydroxide.
Claim 25
Dependent Claim
14 words
A mixture according to claim 1, wherein (b) comprises silicate-cement powders or ion-leaching glasses.
Claim 26
Dependent Claim
24 words
A mixture according to claim 1, wherein (b) comprises finely powdered silver or silver alloys sintered with finely powdered ion-leaching glass or silicate-cement powders.
Claim 27
Dependent Claim
14 words
A mixture according to claim 1, which contains further inorganic or organic nonreactive filler.
Claim 28
Dependent Claim
35 words
A mixture according to claim 1, wherein the total filler content is between 10 and 95% of the mixture and the proportion of reactive filler (b) in the total filler content is at least 5%.
Claim 29
Dependent Claim
35 words
A mixture according to claim 1, wherein the total filler content is between 10 and 95% of the mixture and the proportions of reactive filler (b) in the total filler content is at least 30%.
Claim 30
Dependent Claim
16 words
A mixture according to claim 1, wherein the curing agent is a polymerization catalyst or system.
Claim 31
Dependent Claim
29 words
A mixture according to claim 1, wherein the curing agent is a photoinitiated polymerization catalyst comprising a mixture of an α-diketone and a tertiary amine and/or a tertiary phosphine.
Claim 32
Dependent Claim
51 words
A mixture according to claim 1, wherein (c) is a polymerization catalyst system comprising two separate constituents, one an organic peroxide and the other a tertiary amine, a sulfur compound wherein sulfur is present in oxidation state +2 or +4, or a mixture of both, or contains bivalent chelating metal ions.
Claim 33
Dependent Claim
38 words
A mixture according to claim 31, wherein the constituent of the bicomponent system that contains the sulfur compound contains no polymerizable compounds that have acid or acid groups but contains at least one polymerizable monomer with hydroxyl groups.
Claim 34
Dependent Claim
34 words
A method for repairing, filling, veneering or lining an oxidic, mineral, vitreous, ceramic, metallic or biological substrate, comprising applying to said substrate a mixture according to claim 1, and causing that mixture to harden.
Claim 35
Dependent Claim
63 words
A method for adhering (a) an oxidic, mineral, vitreous, ceramic, metallic or biological substrate to (b) an oxidic, vitreous, ceramic, metallic, biological or acrylic substrate, comprising the steps of (c) applying to said substrate (a) a mixture according to claim 1; (d) bringing said substrate (b) in good contact with said mixture on said substrate (a) and (e) causing that mixture to harden.
Claim 36
Dependent Claim
16 words
A method according to claim 33, wherein said biological substrate is hard dental tissue or bone.
Claim 37
Dependent Claim
25 words
A method for producing a shaped object, comprising moulding a mixture according to claim 1 into a predetermined shape, and causing that mixture to harden.
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