Method for producing hydrogenated petroleum resin

Patent metadata

Field	Value
Publication number	US-11773200-B2
Application number	US-201917041189-A
Country	US
Kind code	B2
Filing date	Mar 27, 2019
Priority date	Mar 28, 2018
Publication date	Oct 3, 2023
Grant date	Oct 3, 2023

Abstract

Provided is a method for producing a hydrogenated petroleum resin having good compatibility with a base polymer and a good hue under a hydrogen pressure of 4 MPaG or less. A method for producing a hydrogenated petroleum resin, includes a hydrogenation step of hydrogenating a polymerization product of dicyclopentadiene and a vinyl aromatic compound in the presence of a catalyst, in which hydrogenation step is performed under conditions (A) to (C): (A) an amount of the catalyst used: 0.125 to 0.4 parts by mass relative to 100 parts by mass of a resin in the polymerization product, (V) a reaction pressure: 4 MPaG or less, and (C) a reaction temperature: 240° C. or higher.

First claim

The invention claimed is:

1. A method for producing a hydrogenated petroleum resin, the method comprising hydrogenating a polymerization product of dicyclopentadiene and a vinyl aromatic compound in the presence of a nickel or palladium catalyst,
wherein the hydrogenating is performed under the following conditions (A) to (C):
(A) an amount of the catalyst employed is 0.125 to 0.4 parts by mass relative to 100 parts by mass of a resin in the polymerization product,
(B) a reaction pressure is 4 MPaG or less; and
(C) a reaction temperature is 250° C. or higher.

2. The method of claim 1 , wherein the polymerization product is obtained by thermally polymerizing the dicyclopentadiene and the vinyl aromatic compound.

3. The method of claim 1 , further comprising thermally polymerizing the dicyclopentadiene and the vinyl aromatic compound, to obtain a polymerization product that is employed in the hydrogenating as the polymerization product of the dicyclopentadiene and the vinyl aromatic compound.

4. The method of claim 1 , wherein the vinyl aromatic compound is represented by the following formula (1):

wherein R 1 represents a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group or an aralkyl group.

5. The method of claim 1 , wherein the catalyst is a nickel catalyst.

6. The method of claim 1 , wherein the reaction pressure is normal pressure to 4 MPaG.

7. The method of claim 1 , wherein the reaction temperature is 250 to 300° C.

8. The method of claim 1 , wherein the catalyst is a palladium catalyst.

Assignees

• Maruzen Petrochem Co Ltd

Inventors

• Kawate Takahiro
• Iijima Yoshikazu

Classifications

• C08F240/00 Primary

  Copolymers of hydrocarbons and mineral oils, e.g. petroleum resins · CPC title

• C08F4/44

  selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides · CPC title

• C08F4/80

  selected from iron group metals or platinum group metals · CPC title

• C08F8/04

  Reduction, e.g. hydrogenation · CPC title

• C08F232/08

  having condensed rings (coumarone-indene polymers C08F244/00) · CPC title