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Metal nanoparticle dispersion and process for producing the same

A metal nanoparticle, manufacturing method technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve problems such as insufficient dispersion stability, achieve excellent self-organization ability, effective specific surface area, The effect of high surface energy

Active Publication Date: 2009-08-12
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, due to the reduction and entry of the metal, the morphology of the shell layer is changed, resulting in insufficient dispersion stability, and further improvement is required.

Method used

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  • Metal nanoparticle dispersion and process for producing the same
  • Metal nanoparticle dispersion and process for producing the same

Examples

Experimental program
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Embodiment

[0102] Hereinafter, the present invention will be described in more detail by citing examples, but the present invention is not limited to these examples. In addition, "%" means "mass %" unless otherwise specified.

[0103] In addition, molecular structures and substance names are indicated in the following abbreviated forms.

[0104] PEI: Polyethyleneimine

[0105] PEG: polyethylene glycol

[0106] PEGM: polyethylene glycol monomethyl ether

[0107] PAEI: polyacetylethyleneimine

[0108] PBEI: Polybenzoylethyleneimine

[0109] PPEI: Polypropionylethyleneimine

[0110] PVAC: polyvinyl acetate

[0111] PVAL: polyvinyl alcohol

[0112] EP: epoxy resin

[0113] BisAEP: bisphenol A epoxy resin

[0114] PSt: polystyrene

[0115] PMMA: polymethyl methacrylate

[0116] MOZ: 2-Methyloxazoline

[0117] EOZ: 2-Ethyloxazoline

[0118] POZ: 2-Phenyloxazoline

[0119] DMA: N,N-Dimethylacetamide

[0120] In the following examples, the machine type used

[0121] 1 H-NMR: man...

Synthetic example 1

[0128] Synthesis Example 1 Synthesis of Polymer Compound (X-1) with PEG-Linear PEI-PBEI Structure

[0129] 1-1[Tosylation reaction of polyethylene glycol]

[0130] In a solution mixed with 10 g (5.1 mmol) of PEGM [the number average molecular weight (Mn) was 2000], 15 g of chloroform and 4 g (51 mmol) of pyridine, was added the solution obtained by dissolving 4.9 g (25.5 mmol) of toluenesulfonyl chloride in 15 g of chloroform. solution, and reacted at 40°C for 4 hours. After the reaction finished, add 30g chloroform to dilute, and wash 2 times with 300g 2.5mol / L hydrochloric acid, wash 2 times with 300g 10% sodium bicarbonate aqueous solution, then wash 2 times with 300g water. The resulting chloroform solution was dried over sodium sulfate, filtered, and then concentrated with an evaporator. It was added to hexane with stirring, precipitated, and vacuum-dried. The yield was 81%. Depend on 1 H-NMR spectrum determines the attribution of each peak (2.4ppm: the methyl group ...

Synthetic example 2

[0140] Synthesis Example 2 Synthesis of Polymer Compound (X-2) with PEG-PEI-BisAEP Structure

[0141] 2-1[Tosylation reaction of EP]

[0142] In a solution mixed with 2g of bisphenol A type epoxy resin EPICLON AM-040-P (manufactured by Dainippon Ink Chemical Industry Co., Ltd.) (epoxy group: 7.9mmol), 10g of chloroform and 6.2g (79mmol) of pyridine, add A solution obtained by dissolving 7.5 g (39.5 mmol) of toluenesulfonyl chloride in 15 g of chloroform was then reacted at 40° C. for 4 hours. After the reaction finished, add 20g chloroform to dilute, and wash twice with 100g 2.5mol / L hydrochloric acid, wash twice with 100g 10% sodium bicarbonate aqueous solution, then wash twice with 100g water. The resulting chloroform solution was dried over sodium sulfate, filtered, and then concentrated with an evaporator. This was added to hexane, precipitated, and dried in vacuo. The yield was 91%. Depend on 1 H-NMR spectrum determines the attribution of each peak (1.6ppm: the methy...

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Abstract

A metal nanoparticle dispersion comprising: a dispersion of a polymer compound (X), which comprises a polyalkyleneimine chain (a), a hydrophilic segment (b) and a hydrophobic segment (c), and metal nanoparticles (Y).

Description

technical field [0001] The present invention relates to a metal nanoparticle dispersion formed by including metal nanoparticles in a dispersion of a polymer compound containing polyalkyleneimine chains, hydrophilic segments and a hydrophobic segment; and to a method of making the metal nanoparticle dispersion. Background technique [0002] Metal nanoparticles are a general term for metal particles having a diameter of 1 to several hundreds of nanometers. Metal nanoparticles are attracting attention in various fields due to their large specific surface area, and are expected to be used in catalysts, electronic materials, magnetic materials, optical materials, various sensors, colorants, medical inspection applications, and the like. However, when the metal is reduced to a nanometer size, the surface energy increases, and melting point depression occurs on the surface of the particles, as a result, fusion bonding between metal nanoparticles is easily caused, and thus, storage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/00C08G73/00C08K3/08
CPCC08K2201/011C08L79/02C08G73/024B82Y30/00C08K3/08C08L79/00C08L79/08
Inventor 松木光一郎李承泽金仁华
Owner DIC CORP
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