Method for preparing polyaromatic oxide and polyaromatic oxide prepared thereby

Patent metadata

Field	Value
Publication number	US-9845275-B2
Application number	US-201515028286-A
Country	US
Kind code	B2
Filing date	Jan 15, 2015
Priority date	Jan 22, 2014
Publication date	Dec 19, 2017
Grant date	Dec 19, 2017

Abstract

Disclosed are a method of preparing polyaromatic oxide and polyaromatic oxide prepared thereby, wherein the method includes (a) placing a plurality of kinds of polyaromatic hydrocarbons and water in a reactor and then stirring them; (b) increasing the temperature inside the reactor to 150 to 300° C. and then feeding a gas containing 10 wt % or more of oxygen into the reactor to increase the partial pressure of oxygen inside the reactor to 2 to 30 bar; and (c) reacting the plurality of kinds of polyaromatic hydrocarbons with oxygen to oxidize the plurality of kinds of polyaromatic hydrocarbons.

First claim

The invention claimed is:

1. A method of preparing a polyaromatic oxide, comprising:
(a) placing a plurality of kinds of polyaromatic hydrocarbons and water in a reactor and then stirring the plurality of kinds of polyaromatic hydrocarbons and water;
(b) increasing a temperature inside the reactor to 150 to 300° C. and then feeding a gas containing 10 wt % or more of oxygen into the reactor to increase a partial pressure of oxygen inside the reactor to 2 to 30 bar; and
(c) reacting the plurality of kinds of polyaromatic hydrocarbons with oxygen to oxidize the plurality of kinds of polyaromatic hydrocarbons, while maintaining the temperature and the partial pressure of oxygen.

2. The method of claim 1 , wherein in (b), the gas contains oxygen in an amount of 20 to 100 wt %.

3. The method of claim 1 , wherein the polyaromatic hydrocarbons have a molecular weight ranging from 200 to 1500.

4. The method of claim 1 , wherein the polyaromatic hydrocarbons include 5 to 50 benzene rings.

5. The method of claim 1 , wherein the polyaromatic hydrocarbons comprise pitch obtained from fossil fuel or fossil fuel products.

6. The method of claim 1 , further comprising (d) cooling the reactor, thus obtaining a cooled product, after (c).

7. The method of claim 6 , further comprising (e) purifying the cooled product, thus obtaining a mixture comprising a plurality of kinds of polyaromatic hydrocarbon oxides.

8. The method of claim 1 , wherein the polyaromatic oxide is used as a dispersant for a hydrocarbon compound or derivatives thereof.

9. The method of claim 8 , wherein the hydrocarbon compound comprises any one or more selected from the group consisting of carbon nanotubes, graphene, and graphite.

Assignees

• Lg Chemical Ltd

Inventors

• Kim Ji Eun
• Lee Won Jae
• Choe Yong Jin
• Kwon Won Jong
• Nam Hyun
• Sohn Kwon Nam

Classifications

• C07B33/00

  Oxidation in general · CPC title

• D01F9/15

  from coal pitch · CPC title

• C08G59/00

  Polycondensates containing more than one epoxy group per molecule (low-molecular-weight polyepoxy compounds C07); Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups · CPC title

• C08J7/14 Primary

  with acids, their salts or anhydrides · CPC title

• C08G73/00

  Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00 {(polycarbodiimides prepared from isocyanates C08G18/025, C08G18/797)} · CPC title