公开(公告)号：US20230126192A1

公开(公告)日：2023-04-27

申请号：US17907720

申请日：2021-03-29

Applicant: ENEOS Corporation

Inventor： Masahide KOBAYASHI ,  Masao OZAWA ,  Toshinori KUGA

IPC: C08F240/00 ,  C08F8/04

Abstract: Provided is a method for producing a petroleum resin using a tube-type reactor, the method producing a petroleum resin that exhibits good properties as an adhesive component for a hot-melt adhesive which has a narrow molecular weight distribution and a high softening point, and which exhibits good adhesive capability and also has little insoluble matter. A method of producing a petroleum resin by using a raw material containing at least a cyclopentadiene-based component (A) and a styrene-indene-based aromatic component (B) so as to carry out a thermal polymerization reaction of the raw material, the method comprising: a first polymerization reaction step of thermally polymerizing the raw material using a loop reactor; and a second polymerization reaction step of thermally polymerizing a polymerization reaction product obtained in the first polymerization reaction step using a plug flow reactor.