The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 03, 2023
Filed:
Mar. 27, 2019
Maruzen Petrochemical Co., Ltd., Chuo-ku, JP;
Takahiro Kawate, Ichihara, JP;
Yoshikazu Iijima, Ichihara, JP;
MARUZEN PETROCHEMICAL CO., LTD., Chuo-ku, JP;
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.