Petroleum resin, hydrogenated petroleum resin, and production method for hydrogenated petroleum resin

Patent metadata

Field	Value
Publication number	US-12084537-B2
Application number	US-201916978532-A
Country	US
Kind code	B2
Filing date	Mar 8, 2019
Priority date	Mar 8, 2018
Publication date	Sep 10, 2024
Grant date	Sep 10, 2024

Abstract

The present invention relates to a petroleum resin having the content of a volatile organic compound component of less than 100 wt ppm; and a hydrogenated petroleum resin having the content of a volatile organic compound component of less than 100 wt ppm.

First claim

The invention claimed is:

1. A method for producing a hydrogenated petroleum resin comprising:
a copolymerization reaction step of subjecting a cyclopentadiene-based compound and a vinyl aromatic compound to a copolymerization reaction in the presence of a polymerization solvent;
a step of performing a removal treatment of a volatile component which is contained in a copolymerization reaction product liquid obtained in the copolymerization reaction step, to obtain a petroleum resin;
a hydrogenation reaction step of subjecting the petroleum resin to a hydrogenation reaction in the presence of a hydrogenation solvent;
a step of performing a removal treatment of an unreacted component and a volatile component which are contained in a hydrogenation reaction product liquid obtained in the hydrogenation reaction step, to obtain a hydrogenated petroleum resin concentrate; and
a removal step of a volatile organic compound component by removing a volatile organic compound component from the hydrogenated petroleum resin concentrate, to obtain a hydrogenated petroleum resin containing 6 to 10% by mass of a hydrogenated low-molecular weight material having a molecular weight of 200 to 350,
wherein the removal step of a volatile organic compound component is constituted of a first step of supplying the hydrogenated petroleum resin into a thin film distillation apparatus, to control the content of the volatile organic compound component to less than 2,000 wt ppm; and a second step of supplying the hydrogenated petroleum resin having passed the first step into a nitrogen-stripping apparatus or a steam distillation apparatus, to control the content of the volatile organic compound component to less than 100 wt ppm.

2. The method for producing a hydrogenated petroleum resin according to claim 1 , wherein the content of the hydrogenated low-molecular weight material which is contained in the hydrogenated petroleum resin in the hydrogenated petroleum resin concentrate is 7 to 13% by mass in 100% by mass of the hydrogenated petroleum resin containing the hydrogenated low molecular material.

3. The method for producing a hydrogenated petroleum resin according to claim 1 , wherein in the thin film distillation apparatus, a treatment temperature is 100 to 300° C., a treatment pressure is 0.1 to 15 kPa, and a treatment time is 5 to 180 minutes.

4. The method for producing a hydrogenated petroleum resin according to claim 1 , wherein in the nitrogen-stripping apparatus or the steam distillation apparatus, a treatment temperature is 150 to 300° C., a treatment pressure is 0.5 to 150 kPa, a nitrogen or steam flow rate is 100 to 1,000,000 mL/mite relative to 100% by mass of the hydrogenated petroleum resin, and a treatment time is 10 to 180 minutes.

5. The method for producing a hydrogenated petroleum resin according to claim 1 , wherein the nitrogen-stripping apparatus is a rotary evaporator or a flash drum, and the steam distillation apparatus is a flash drum or a stripping tower.

Assignees

• Idemitsu Kosan Co

Inventors

• Yokota Kiyohiko
• Kobayashi Kenji
• Kuroki Masakatsu

Classifications

• C09J145/00

  Adhesives based on homopolymers or copolymers of compounds having no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic or in a heterocyclic system; Adhesives based on derivatives of such polymers (based on polymers of cyclic esters of polyfunctional acids C09J131/00; based on polymers of cyclic anhydrides or imides C09J135/00) · CPC title

• C09J125/08

  Copolymers of styrene (C09J129/08, C09J135/06, C09J155/02 take precedence) · CPC title

• C09J11/08 Primary

  Macromolecular additives · CPC title

• C08F232/08

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

• C08F212/08

  Styrene · CPC title