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:
May. 11, 2021
Filed:
Feb. 05, 2018
Akebono Brake Industry Co., Ltd., Tokyo, JP;
Motoki Kuroe, Tokyo, JP;
Kanami Nakamura, Tokyo, JP;
AKEBONO BRAKE INDUSTRY CO., LTD., Tokyo, JP;
Abstract
A thermosetting resin composition for a friction material includes a thermosetting resin and a lignocellulose nanofiber dispersed in the thermosetting resin. A method for producing a thermosetting resin composition for a friction material includes a first step and a second step. In the first step, a plant-based biomass containing a lignocellulose is mixed with a dispersion medium to obtain a mixture thereof, and the mixture is subjected to a defibration treatment to obtain a slurry of a lignocellulose nanofiber. In the second step, phenol is reacted with an aldehyde in the presence of an acid catalyst to obtain a thermosetting resin, and the slurry is added to the thermosetting resin. The lignocellulose nanofiber is dispersed in the thermosetting resin while removing the dispersion medium and unreacted phenol.