A method for selective hydrogenation

Patent metadata

Field	Value
Publication number	US-2020369794-A1
Application number	US-201816769709-A
Country	US
Kind code	A1
Filing date	Dec 19, 2018
Priority date	Dec 29, 2017
Publication date	Nov 26, 2020
Grant date	—

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.

2 . The method for selective hydrogenation according to claim 1 , wherein the hydrogenation subject is petroleum resin.

3 . The method for selective hydrogenation according to claim 1 , wherein the hydrogenation catalysts comprise a selective hydrogenation catalyst and a non-selective hydrogenation catalyst.

4 . The method for selective hydrogenation according to claim 3 , wherein the weight ratio of the non-selective hydrogenation catalyst and selective hydrogenation catalyst is 1:0.01 to 1:100.

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

6 . The method for selective hydrogenation according to claim 3 , 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.

7 . The method for selective hydrogenation according to claim 3 , wherein the non-selective hydrogenation catalyst comprises nickel(Ni).

8 . 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.

9 . 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.

10 . 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.

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

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

13 . The method for selective hydrogenation according to claim 1 , wherein the 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

• C10G45/60

  characterised by the catalyst used · CPC title

• B01J37/035

  Precipitation on carriers · CPC title

• B01J23/755

  Nickel · CPC title

• C08F8/04 Primary

  Reduction, e.g. hydrogenation · CPC title

• B01J27/02

  Sulfur, selenium or tellurium; Compounds thereof · CPC title