# US 4,398,007 A · Denture-base resin composition and method for using the same

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- Number: US 4,398,007 A
- Document ID: US4398007A
- Status: Granted
- Kind: A
- Application number: 06/199,625
- Filed: 1980-10-22
- Granted: 1983-08-09
- Earliest claimed: 1980-10-22
- Assignees: G-C Dental Industrial Corp.
- Inventors: Takao Kubota; Shigenobu Kusakai
- Web page: https://patentgrep.com/patent/US4398007A

## CPC

- A61K 6/887: Compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C08F 2/44: Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
- C08F 20/14: Methyl esters {, e.g. methyl (meth)acrylate}
- 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)
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS

## Abstract

The denture-base resin composition of the present invention contains a liquid component obtained by incorporation of 0.5 to 20% by weight of a particular silane compound and 0.5 to 10% by weight of a unsaturated carboxylic acid into a methyl methacrylate monomer. Examples of the silane compound used in the present invention includes .gamma.-glycidoxypropyltrimethoxysilane, .gamma.-glycidoxypropyltriethoxysilane, .gamma.-methacryloxypropyltriethoxysilane, etc. The liquid component may be mixed with a methyl methacrylate polymer in a mixing ratio (by weight) of 1:3 to 3:1.

## Claims

### Claim 1

A denture-base resin composition comprising a methyl methacrylate monomer containing 0.5 to 20% by weight of a particular silane compound expressed by the general formula: ##STR7## wherein D: a hydrolyzable group
n: an integer of 1, 2 or 3
b: an integer of 0, 1 or 2
n+b: an integer of 1, 2 or 3
R': is a monovalent hydrocarbon group
R: an alkylene group having 1 to 4 carbon atoms
c: an integer of 0 to 1 ##STR8## wherein X: a hydrogen atom or a hydrocarbon group having 1 to 6 carbon atoms, and mixed with 0.5 to 10% by weight of a unsaturated carboxylic acid.

### Claim 2 (depends on 1)

The denture-base resin composition as recited in claim 1, in which the unsaturated carboxylic acid used is a unsaturated monocarboxylic acid.

### Claim 3 (depends on 1)

The denture-base resin composition as recited in claim 1, in which the unsaturated carboxylic acid used is a unsaturated polycarboxylic acid.

### Claim 4 (depends on 2, 3)

The denture-based resin composition as recited in claim 2 or 3, in which the methyl methacrylate monomer contains 0.1 to 5% by weight of a cross-linking agent.