# US 2014/0194590 A1 · Process for production of thermoplastic cured epoxy resin with transparency to visible light, and thermoplastic epoxy resin composition

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- Number: US 2014/0194590 A1
- Document ID: US20140194590A1
- Status: Published application
- Kind: A1
- Application number: 14/205,950
- Filed: 2014-03-12
- Published: 2014-07-10
- Earliest claimed: 2009-01-09
- Assignees: Nagase Chemtex Corporation
- Applicants: Nagase Chemtex Corporation
- Inventors: Yutaka TSUJIMURA
- Web page: https://patentgrep.com/patent/US20140194590A1

## CPC

- C08G 59/686: {containing nitrogen}
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

## Abstract

Provided are a thermoplastic epoxy resin composition comprising (A) an epoxy compound having two epoxy groups in one molecule, (B) a compound having two phenolic hydroxyl groups in one molecule, and at least one compound selected from the group consisting of dihexylamine, diheptylamine, di(2-ethylhexyl)amine, N-ethylhexylamine, trihexylamine, dioctylamine, tri n-octylamine, N,N-dimethyl-n-octylamine, and N,N-dimethyldecylamine as (C) a curing accelerator, and a thermoplastic cured epoxy resin with transparency to visible light produced by curing the thermoplastic epoxy resin composition.

## Claims

### Claim 1

A thermoplastic epoxy resin composition comprising (A) an epoxy compound having two epoxy groups in one molecule, (B) a compound having two phenolic hydroxyl groups in one molecule, and at least one compound selected from the group consisting of dihexylamine, diheptylamine, di(2-ethylhexyl)amine, N-ethylhexylamine, trihexylamine, dioctylamine, tri-n-octylamine, N,N-dimethyl-n-octylamine, and N,N-dimethyldecylamine as (C) a curing accelerator.

### Claim 2 (depends on 1)

The thermoplastic epoxy resin composition according to claim 1, wherein the curing accelerator (C) is tri-n-octylamine.

### Claim 3 (depends on 1)

The thermoplastic epoxy resin composition according to claim 1, wherein the curing accelerator (C) further contains at least one compound selected from the group consisting of monoethanolamine, diethanolamine, triethanolamine, triisopropanolamine, tri(2-butanol)amine, tri(t-butanol)amine, tri(2-pentanol)amine, tri(3-methyl-2-butanol)amine, tri(2-methyl-2-butanol)amine, N-butyldiethanolamine, and N,N-dibutylethanolamine.

### Claim 4 (depends on 3)

The thermoplastic epoxy resin composition according to claim 3, wherein the curing accelerator (C) consists of a combination of tri n-octylamine and at least one compound selected from the group consisting of monoethanolamine, diethanolamine, triethanolamine, triisopropanolamine, tri(2-butanol)amine, tri(t-butanol)amine, tri(2-pentanol)amine, tri(3-methyl-2-butanol)amine, tri(2-methyl-2-butanol)amine, N-butyldiethanolamine, and N,N-dibutylethanolamine.

### Claim 5 (depends on 1)

The thermoplastic epoxy resin composition according to claim 1, wherein the curing accelerator (C) is contained in an amount of 0.01 to 10 parts by weight relative to 100 parts by weight of the epoxy compound (A).

### Claim 6 (depends on 2)

The thermoplastic epoxy resin composition according to claim 2, wherein tri n-octylamine as the curing accelerator (C) is contained in an amount of 0.01 to 2.3 parts by weight relative to 100 parts by weight of the epoxy compound (A).

### Claim 7 (depends on 3)

The thermoplastic epoxy resin composition according to claim 3, wherein the curing accelerator (C) is contained in an amount of 0.01 to 10 parts by weight relative to 100 parts by weight of the epoxy compound (A).

### Claim 8 (depends on 1)

The thermoplastic epoxy resin composition according to claim 1, wherein the compounded amount of the epoxy compound (A) and the compound (B) is 0.9 to 1.1 mol of the compound (B) relative to 1 mole of the epoxy compound (A).

### Claim 9 (depends on 1)

A thermoplastic cured epoxy resin with transparency to visible light produced by curing the thermoplastic epoxy resin composition according to claim 1.

### Claim 10 (depends on 9)

The thermoplastic cured epoxy resin with transparency to visible light produced by curing the thermoplastic epoxy resin composition according to claim 9, wherein the curing accelerator (C) is tri-n-octylamine.