Photoepolymerization initiater

A technology of photopolymerization initiators and compounds, applied in dental preparations, dental prostheses, compression mold cups, etc., can solve the problem of decreased polymerization activity, and achieve the effects of high mechanical strength, high polymerization activity, and good storage stability

Active Publication Date: 2004-10-20
TOKUYAMA CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even if the temperature does not exceed 50°C, it can be expected that the polymerization activity will also decrease if it is stored for a longer period of time.

Method used

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  • Photoepolymerization initiater
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  • Photoepolymerization initiater

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0106]The present invention will be described more specifically by means of working examples below, but the present invention is not limited by the following manner.

[0107] Abbreviations for compounds used in the following Examples and Comparative Examples.

[0108] (1) Abbreviation

[0109] (A) α-diketone

[0110] CQ: Camphorquinone

[0111] (B1) Aliphatic amine compound

[0112] (B1-1) A compound having two to three saturated aliphatic groups substituted with electron-attracting groups.

[0113] TEOA: Triethanolamine

[0114] EDEOA: N-Ethyldiethanolamine

[0115] MDEOA: N-Methyldiethanolamine

[0116] TAA: Triallylamine

[0117] (B1-2) A compound having only one saturated aliphatic group substituted with an electron-attracting group.

[0118] DMEM: N,N-dimethylaminoethyl methacrylate

[0119] DEEOA: N,N-Diethylethanolamine

[0120] (B1-3) A compound not containing a saturated aliphatic group substituted with an electron-attracting group.

[0121] TEA: Triethylam...

Embodiment 1

[0190] As polymerizable monomers, D2.6E (70 parts by mass), 3G (25 parts by mass) and UDMA (5 parts by mass) were used, and a polymerization initiator, namely, CQ (0.3 parts by mass), DMPT (0.25 parts by mass) was added thereto. parts), DMEM (0.25 parts by mass) and TCT (0.4 parts by mass). The mixture was dissolved in the dark to obtain a homogeneous solution. The curing properties and Vickers hardness of the solutions were evaluated by using three dental irradiators (LM, A95, TP). The results are shown in Table 1.

Embodiment 2 and 3

[0205] Embodiment 2 and 3, comparative examples 3 to 6

[0206] Solutions were prepared in the same manner as in Example 1, except that the composition of the polymerization initiator was changed as shown in Table 2, and evaluated. Curing performance was evaluated with a halogen lamp (TP). The results are shown in Table 2.

[0207] Table 2

[0208] Photopolymerization initiator / mass parts TP curing properties hardness

[0209] CO DMPT DMEM TCT Ph2IPF6 5 10 15 LM A95 TP

[0210] sec sec sec.

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Abstract

A photopolymerization initiator comprising (A) an alpha -diketone compound such as camphorquinone, (B1) an aliphatic amine compound such as triethanolamine or N-methyldiethanolamine, (B2) an aromatic amine compound such as ethyl p-dimethylaminobenzoate or N,N-dimethyl p-toluidine, and (C) a triazine compound substituted with a trihalomethyl group, such as 2,4,6-tris(trichloromethyl)-s-triazine or 2-phenyl-4,6-bis(trichloromethyl)-s-triazine. The photopolymerization initiator remains stable against the environmental light such as the indoor illumination light from a fluorescent lamp or the dental light illuminating the interior of the oral cavity, is excellently handled, is quickly cured by the irradiation with an intense light emitted from a light irradiator for polymerization, provides a cured body having excellent properties, can be stably preserved even at high temperatures, and is very useful as a dental composite resin.

Description

technical field [0001] The present invention relates to a novel photopolymerization initiator useful for dental materials, photoresist materials, printing plate materials and holographic materials, especially for dental materials. More specifically, the present invention relates to a photopolymerization initiator that is more stable than conventional photopolymerization initiators under ambient light (with weak intensity), but which is stable under strong light such as from halogen lamps, xenon lamps, or laser diodes. Under the irradiation of a special irradiator, the polymerization is completed rapidly in a short period of time, so that highly cured objects can be obtained without reducing the activity even after a longer period of storage. Background technique [0002] Various photopolymerization initiators capable of generating radicals or ions to polymerize polymerizable unsaturated compounds and cyclic compounds upon irradiation with light have ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K6/083A61K6/884C08F2/50
CPCA61K6/0052A61K6/08C08F2/50A61K6/62A61K6/884
Inventor 原忠司铃木健岛田缕美子风间秀树秋积宏伸鹿志村睦美
Owner TOKUYAMA CORP
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