Patent US3876404A successfully refreshed from Google Patents.
Patent EP0336417A2 successfully refreshed from Google Patents.
EP0336417A2
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EP
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Phosphonate initiators for light cured compositions
Assignee: Dentsply Sirona Inc
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Filing: 1989-04-06
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Granted: —
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Expires: 2009-04-06
Abstract
Abstract An initiator system for photo curing olefinically unsaturated monomers is provided. The initiator system, in its preferred embodiment comprises an acylphosphonate, camphorquinone and an amine. Using the initiator of the invention produces a cured polymer with unexpectedly improved properties.
Inventors
- 👤 Sabine Dr. Venz
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 02:07
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/46; C08F2/48; C08F2/50; A; A61; A61K; A61K6/00; A61K6/60; A61K6/62; A61K6/70; A61K6/71; A61K6/77
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
34 words
A photopolymerizable composition for dental use comprising at least one olefinically unsaturated monomer and a catalyst comprising acyl phosphonate as a photoinitiator/photoaccelerator, said composition being curable in the visible light range of the spectrum.
Claim 2
Dependent Claim
34 words
A photopolymerizable composition for dental use comprising at least one olefinically unsaturated monomer and a catalyst comprising acyl phosphonate as a photoinitiator/photoaccelerator, said composition being curable in the visible light range of the spectrum.
Claim 3
Dependent Claim
16 words
The composition of Claim 1 wherein the monomer includes at least one acrylic or methacrylic ester.
Claim 4
Dependent Claim
10 words
The composition of Claim 1 which includes a vicinal diketone.
Claim 5
Dependent Claim
9 words
The composition of Claim 3 which includes an amine.
Claim 6
Dependent Claim
10 words
The composition of Claim 1 which includes a tertiary amine.
Claim 7
Dependent Claim
14 words
The composition of Claim 1 wherein the composition contains a finely divided inorganic filler.
Claim 8
Dependent Claim
96 words
The composition of Claim 1 wherein said acylphosphonate has the formula wherein R₁ is aryl, alkyl, OH or OR where R is aryl or alkyl; R₂ and R₃ may be the same or different and together may form a ring and are selected from the group comprising aryl, alkyl and H; wherein alkyl is a saturated or unsaturated chain comprising from 1 to 18 carbon atoms, and aryl represents an aromatic carbon or heterocyclic ring or rings having 4-10 carbon atoms which may have substituents comprising halogen and lower alkyl totaling from 1-6 additional carbon atoms.
Claim 9
Dependent Claim
14 words
The composition of Claim 7 wherein said alkyl contains a methacrylate or acrylate moiety.
Claim 10
Dependent Claim
14 words
The composition of Claim 1 wherein said catalyst comprises benzoyl di (2,6 dimethylphenyl) phosphonate.
Claim 11
Dependent Claim
18 words
The use of the composition of Claim 1 for treating teeth by its application to a prepared tooth.
Claim 12
Dependent Claim
17 words
A photopolymerizable composition comprising at least one olefinically unsaturated monomer and a catalyst system comprising acyl phosphonate.
Claim 13
Dependent Claim
17 words
A photopolymerizable composition comprising at least one olefinically unsaturated monomer and a catalyst system comprising acyl phosphonate.
Claim 14
Dependent Claim
11 words
12 The composition of Claim 11 which includes a vicinal diketone.
Claim 15
Dependent Claim
9 words
The composition of Claim 12 which includes an amine.
Claim 16
Dependent Claim
18 words
The use of the composition of Claim 12 for treating teeth by its application to a prepared tooth.
References Cited (Backward Citations)
No citation records indexed.
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