# US 11,433,005 B2 · Dental filling material and dental polymerizable composition

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- Number: US 11,433,005 B2
- Document ID: US11433005B2
- Status: Granted
- Kind: B2
- Application number: 17/040,708
- Filed: 2018-12-04
- Published: 2021-01-14
- Granted: 2022-09-06
- Earliest claimed: 2018-03-29
- Assignees: GC Corporation
- Applicants: GC Corporation
- Inventors: Hiroki Kato; Satoshi Jin
- Web page: https://patentgrep.com/patent/US11433005B2

## CPC

- A61K 6/887: Compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- A61K 6/836: Glass
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)

## Abstract

According to one aspect of the present invention, a dental filling material is manufactured by surface-treating an inorganic filling material with a silane coupling agent having an epoxy group and then by causing a ring-opening reaction with a composition containing an epoxide having a (meth)acryloyl group.

## Claims

### Claim 1

A dental filling material that is manufactured by surface-treating an inorganic filling material with a silane coupling agent having an epoxy group and then by causing a ring-opening reaction with a composition containing a ring-opening reaction initiator and containing an epoxide having a (meth)acryloyl group, wherein the ring-opening reaction initiator includes at least one of N,N-diethyl-1,3-diaminopropane, 2,2′-diaminodiethylamine, bis(4-aminophenyl)sulfone or phthalic anhydride.

### Claim 2

A dental filling material that is manufactured by causing a silane coupling agent having an epoxy group, a composition containing a ring-opening reaction initiator and containing an epoxide having a (meth)acryloyl group, and an inorganic filling material to react, wherein the ring-opening reaction initiator includes at least one of N,N-diethyl-1,3-diaminopropane, 2,2′-diaminodiethylamine, bis(4-aminophenyl)sulfone or phthalic anhydride.

### Claim 3 (depends on 1)

A dental polymerizable composition comprising:
the dental filling material according to claim 1 and
a (meth)acrylate.

### Claim 4 (depends on 3)

The dental polymerizable composition according to claim 3, wherein the dental polymerizable composition is a dental restorative material.

### Claim 5 (depends on 2)

A dental polymerizable composition comprising:
the dental filling material according to claim 2 and
a (meth)acrylate.

### Claim 6 (depends on 5)

The dental polymerizable composition according to claim 5, wherein the dental polymerizable composition is a dental restorative material.

### Claim 7 (depends on 1)

The dental polymerizable composition according to claim 1, further comprising at least one of a chemical polymerization initiator or a photopolymerization initiator in addition to the ring-opening reaction initiator.