Epoxy-amine adduct, resin composition, sizing agent, carbon fiber coated with sizing agent, and fiber-reinforced composite material

Patent metadata

Field	Value
Publication number	US-9388294-B2
Application number	US-201314401477-A
Country	US
Kind code	B2
Filing date	Apr 30, 2013
Priority date	May 16, 2012
Publication date	Jul 12, 2016
Grant date	Jul 12, 2016

Abstract

Provided is an epoxy-amine adduct that offers high reactivity, contributes to better adhesion between a resin and a reinforcing fiber in a fiber-reinforced composite material, and can be easily blended with another component such as a resin. The epoxy-amine adduct has two or more amino groups per molecule and is obtained by a reaction of an epoxy compound (A) having two or more alicyclic epoxy groups per molecule with an amine compound (B) having two or more amino groups per molecule. The epoxy compound (A) is preferably a compound represented by Formula (a):

First claim

The invention claimed is:

1. An epoxy-amine adduct represented by Formula (I):

wherein at least one of R 2′ is a first divalent group, at least one other of R 2′ is a second divalent group, and the rest of R 2′ are, in each occurrence, selected from the first divalent group and the second divalent group, the first divalent group comprising two or more divalent linear or branched chain aliphatic hydrocarbon groups bonded to each other via a heteroatom-containing linkage group, the second divalent group comprising a divalent linear or branched chain aliphatic hydrocarbon group and a divalent cyclic aliphatic hydrocarbon group directly bonded to each other; X is, in each occurrence independently, selected from a single bond and a divalent group comprising at least one atom; and q represents an integer from 2 to 150.

2. A sizing agent comprising the epoxy-amine adduct of claim 1 .

3. A sizing-agent-coated carbon fiber comprising:
a carbon fiber; and
the sizing agent of claim 2 applied to the carbon fiber.

4. A fiber-reinforced composite material comprising:
the sizing-agent-coated carbon fiber of claim 3 ; and
one selected from the group consisting of:
a thermoplastic resin; and
a cured product of a curable compound.

5. A resin composition comprising:
the epoxy-amine adduct of claim 1 ; and
a thermoplastic resin.

6. The resin composition according to claim 5 , as a resin composition for a fiber-reinforced composite material.

7. A prepreg comprising:
the resin composition of claim 6 ; and
a reinforcing fiber impregnated or coated with the resin composition.

8. A fiber-reinforced composite material formed from the prepreg of claim 7 .

Assignees

• Daicel Corp

Inventors

• Sakane Masanori

Classifications

• C07C2601/14

  The ring being saturated · CPC title

• Y10T428/2918

  including free carbon or carbide or therewith [not as steel] · CPC title

• C08K5/17 Primary

  Amines; Quaternary ammonium compounds · CPC title

• C08G65/00 Primary

  Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule · CPC title

• C08G59/24

  carbocyclic · CPC title