公开(公告)号：US20180313037A1

公开(公告)日：2018-11-01

申请号：US15763486

申请日：2016-09-27

Applicant: KURARAY CO., LTD.

Inventor： Tomohiro HAYAKAWA ,  Toshimichi KUSUNOKI ,  Hiroyuki KAWAI ,  Hideo KIYOYAMA

IPC: D21H21/08 ,  C08L63/00 ,  C08L75/08 ,  B01F17/00 ,  D21H13/50 ,  D21H17/00 ,  D21H17/57 ,  D21H17/52

CPC classification number: D21H21/08 ,  B01F17/0028 ,  B01F17/005 ,  B01F17/0092 ,  C08G18/4833 ,  C08G18/4837 ,  C08G18/73 ,  C08L63/00 ,  C08L75/08 ,  D21H13/50 ,  D21H15/02 ,  D21H17/36 ,  D21H17/52 ,  D21H17/57 ,  D21H17/72 ,  C08L71/02

Abstract: Provided is a dispersant for carbon fibers which allows uniform dispersion of relatively long carbon fibers, e.g., carbon fibers with a length of 12.5 mm or more, particularly 10.0-100.0 mm, more particularly 12.5-50.0 mm in an aqueous medium.A dispersant for carbon fibers used by combining: (A) a random copolymer of phenylglycidyl ether and ethylene oxide, or a random copolymer of phenylglycidyl ether, ethylene oxide and propylene oxide; and (B) a polyether-based polyurethane resin based on a bifunctional polyol and hexamethylene diisocyanate, the bifunctional polyol being polyethylene glycol and/or an ethylene oxide-propylene oxide random copolymer.