Method for selective hydrogenation

Patent metadata

Field	Value
Publication number	US-11447581-B2
Application number	US-201816769709-A
Country	US
Kind code	B2
Filing date	Dec 19, 2018
Priority date	Dec 29, 2017
Publication date	Sep 20, 2022
Grant date	Sep 20, 2022

Abstract

The invention relates to a method for selective hydrogenation. More specifically, it relates to a method for selective hydrogenation capable of improving selectivity and reaction efficiency in the hydrogenation process of petroleum resin.

First claim

What is claimed is:

1. A method for selective hydrogenation comprising the steps of:
dispersing two or more kinds of hydrogenation catalysts in a solvent to prepare a catalyst slurry; and
mixing the catalyst slurry, a hydrogenation subject, and hydrogen gas to conduct a hydrogenation process,
wherein the hydrogenation subject is petroleum resin,
wherein the hydrogenation catalysts comprise a selective hydrogenation catalyst and a non-selective hydrogenation catalyst,
wherein the selective hydrogenation catalyst is one in which nickel and a cocatalyst are supported on a carrier, and the cocatalyst comprises sulfur and copper, and
wherein the non-selective hydrogenation catalyst comprises nickel (Ni).

2. The method for selective hydrogenation according to claim 1 , wherein a weight ratio of the non-selective hydrogenation catalyst and selective hydrogenation catalyst is 1:0.01 to 1:100.

3. The method for selective hydrogenation according to claim 1 , further comprising an additional selective hydrogenation catalyst comprising one or more noble metals selected from the group consisting of palladium (Pd), platinum (Pt), ruthenium (Ru), and rhodium (Rh).

4. The method for selective hydrogenation according to claim 1 , wherein the solvent includes one or more selected from the group consisting of pentane, hexane, heptane, nonane, decane, cyclohexane, methylcyclohexane, benzene, toluene and xylene.

5. The method for selective hydrogenation according to claim 1 , wherein the hydrogenation process is conducted at a temperature of 100 to 400° C. and a pressure of 1 to 200 bar.

6. The method for selective hydrogenation according to claim 1 , wherein the hydrogenation process is conducted in an autoclave type reactor equipped with a stirrer or a loop type reactor that mixes reaction fluid while circulating.

7. The method for selective hydrogenation according to claim 1 , wherein a product obtained after conducting the hydrogenation process has an APHA value measured according to ASTM D1209 of 150 or less.

8. The method for selective hydrogenation according to claim 1 , wherein a product obtained after conducting the hydrogenation process has aromaticity measured by NMR analysis of 30% or less.

9. The method for selective hydrogenation according to claim 1 , wherein a product obtained after conducting the hydrogenation process is used for a pressure sensitive adhesive or an adhesive.

Assignees

• Hanwha Solutions Corp

Inventors

• Seo Sang Ho
• Choi Ji Hye
• Han Kee Do
• Park Seong Ho
• Jeon Bong Sik

Classifications

• B01J23/8926

  Copper and noble metals · CPC title

• B01J37/031

  Precipitation · CPC title

• C09J157/02

  Copolymers of mineral oil hydrocarbons · CPC title

• B01J37/0201

  Impregnation · CPC title

• B01J23/40

  of the platinum group metals · CPC title