Title:
再生補強繊維の製造方法
Document Type and Number:
Japanese Patent JP7240567
Kind Code:
B2
Abstract:
Provided is a method of producing recycled reinforcing fibers capable of efficiently recovering reinforcing fibers, even with a solvent method, from a fiber-reinforced resin material comprising a resin component having a chemical structure with basic properties.A method of producing recycled reinforcing fibers, the method including: a step of treating a fiber-reinforced resin material comprising a resin and reinforcing fibers with an acidic solution comprising an acid; and a step of treating the fiber-reinforced resin material with a treatment solution comprising an oxidizing agent to dissolve at least part of the resin of the fiber-reinforced resin material in the treatment solution, wherein the resin comprises a resin component having a chemical structure with basic properties.
Inventors:
Maruko Haruna
Application Number:
JP2022567565A
Publication Date:
March 15, 2023
Filing Date:
December 22, 2021
Export Citation:
Assignee:
Mirai Kasei Co., Ltd.
International Classes:
C08J11/16
Domestic Patent References:
| JP2000034362A | ||||
| JP2019136932A | ||||
| JP2017104847A | ||||
| JP11109138A | ||||
| JP2020114904A |
Foreign References:
| CN102391543A | ||||
| CN111171373A | ||||
| CN104592546A | ||||
| CN102731821A | ||||
| KR1020110047750A | ||||
| EP3754054A1 |
Attorney, Agent or Firm:
Kiyoshi Higashida
Hitoshi Goto
Hitoshi Goto