Method for deodorizing hydrogenated petroleum resin, and method for producing hydrogenated petroleum resin

Patent metadata

Field	Value
Publication number	US-11485803-B2
Application number	US-201917041773-A
Country	US
Kind code	B2
Filing date	Mar 27, 2019
Priority date	Mar 28, 2018
Publication date	Nov 1, 2022
Grant date	Nov 1, 2022

Abstract

Provided is a new method that effectively reduces odor components that are present in a hydrogenated petroleum resin, and adjusts a softening point to an appropriate range for exhibiting an adhesive performance.A method for deodorizing a hydrogenated petroleum resin, includes stripping a hydrogenated petroleum resin at a gas flow rate of 1 to 45 VVM.

First claim

The invention claimed is:

1. A method for deodorizing a hydrogenated petroleum resin, the hydrogenated petroleum resin comprising a dicyclopentadiene/vinyl aromatic compound hydrogenated resin and volatile components, the method comprising:
hydrogenating a dicyclopentadiene/vinyl aromatic compound polymer in a solvent;
removing the solvent to obtain a dicyclopentadiene/vinyl aromatic compound hydrogenated resin comprising volatile compounds;
blowing a stream of gas inert to the dicyclopentadiene/vinyl aromatic compound hydrogenated resin into the hydrogenated petroleum resin at a gas flow rate of 1 VVM to 45 VVM; and
removing the gas stream with the volatile components from the hydrogenated petroleum resin; wherein
the temperature of the hydrogenated petroleum resin is maintained at a temperature of from 150° C. to 250″ while the stream of gas is blown, and
a softening point of the dicyclopentadiene/vinyl aromatic compound hydrogenated resin is from 90° C. to 105° C.

2. The method for deodorizing a hydrogenated petroleum resin according to claim 1 , wherein the temperature of the hydrogenated petroleum resin is maintained at a temperature of 160 to 240° C. while the stream of gas is blown.

3. The method for deodorizing a hydrogenated petroleum resin according to claim 1 , wherein the gas flow rate is from 5 VVM to 30 VVM.

Assignees

• Maruzen Petrochem Co Ltd

Inventors

• Hayashi Tomoki
• Iijima Yoshikazu
• Matsushita Keisuke

Classifications

• C08F8/04 Primary

  Reduction, e.g. hydrogenation · CPC title

• C08F240/00

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

• C08F6/10 Primary

  Removal of volatile materials, e.g. solvents {(C08F6/001, C08F6/003, C08F6/005, C08F6/006, C08F6/008, C08F6/02, C08F6/04 take precedence)} · CPC title

• C08F212/08

  Styrene · CPC title

• C08F232/04

  having one carbon-to-carbon double bond · CPC title