Dental polymerizable monomers

Patent metadata

Field	Value
Publication number	US-10130564-B2
Application number	US-201515300696-A
Country	US
Kind code	B2
Filing date	Mar 31, 2015
Priority date	Mar 31, 2014
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

Provided are dental polymerizable monomers that can give cured products having high toughness and high rigidity, dental polymerizable monomer compositions containing the polymerizable monomers, and dental compositions containing the dental polymerizable monomer compositions, and cured products thereof having high mechanical properties. The dental polymerizable monomer (A) which includes a urethane acrylate obtained from an appropriately rigid diisocyanate and an appropriately flexible hydroxyacrylate is used to prepare a dental polymerizable monomer composition containing the dental polymerizable monomer, and a dental composition containing the dental polymerizable monomer composition.

First claim

The invention claimed is:

1. A dental polymerizable monomer (A) comprising a urethane acrylate that has at least one acryloyl group and is represented by the general formula (1) below:

wherein in the general formula (1), R a is a group which has a divalent C 6-9 aromatic hydrocarbon group or a divalent C 6-9 bridged cyclic hydrocarbon group in the middle and is bonded to nitrogen atoms in adjacent carbamoyl groups via an unsubstituted methylene group; R b and R c are each independently a C 2-6 linear alkylene group or a C 2-6 linear oxyalkylene group, each of which is optionally substituted with a C 1-3 alkyl group or a (meth)acryloylmethylene group in place of a hydrogen atom; and R d represents a hydrogen atom or a methyl group.

2. The dental polymerizable monomer (A) according to claim 1 , wherein in the general formula (1), R d is a hydrogen atom.

3. The dental polymerizable monomer (A) according to claim 1 , wherein in the general formula (1), R a is a group represented by the formula (2) or (3) below

4. The dental polymerizable monomer (A) according to claim 3 , wherein in the general formula (2), R a is a group represented by the formula (4) below

5. The dental polymerizable monomer (A) according to claim 1 , wherein R b and R c in the general formula (1) independently at each occurrence represents a C 2-6 linear alkylene group or a C 2-6 linear oxyalkylene group, each of which is optionally substituted with a C 1-3 alkyl group in place of a hydrogen atom.

6. A dental polymerizable monomer composition comprising the dental polymerizable monomer (A) described in claim 1 .

7. The dental polymerizable monomer composition according to claim 6 , wherein the viscosity at 25° C. is 1 to 100,000 mPa·s.

8. A dental composition comprising the dental polymerizable monomer composition described in claim 6 , a polymerization initiator and a filler.

9. A dental material obtained by curing the dental composition described in claim 8 .

Assignees

• Mitsui Chemicals Inc
• Shofu Inc
• Sun Medical Co Ltd

Inventors

• Yoshinaga Kazuhiko
• Naruse Hiroshi
• Teramae Mitsuji
• Fuchigami Kiyomi
• Fujimura Hidefumi
• Tsuchikawa Masuji
• Imai Hirofumi

Classifications

• A61K6/79 Primary

  Initiators · CPC title

• A61K6/30

  Compositions for temporarily or permanently fixing teeth or palates, e.g. primers for dental adhesives · CPC title

• A61K6/889

  Polycarboxylate cements; Glass ionomer cements · CPC title

• A61K6/71

  Fillers · CPC title

• A61K6/887 Primary

  Compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title