Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
CHOPPED CARBON FIBER BUNDLE AND PRODUCTION METHOD FOR CHOPPED CARBON FIBER BUNDLE
Document Type and Number:
WIPO Patent Application WO/2022/004872
Kind Code:
A1
Abstract:
A chopped carbon fiber bundle comprising: carbon fibers; and a sizing agent, wherein the sizing agent contains a compound having a maleimide group, and the compound having a maleimide group is liquid at 25°C. A production method for a chopped carbon fiber bundle, the method comprising: a step for adding, to a long carbon fiber bundle to which a primary sizing agent has been deposited, an aqueous dispersion of a secondary sizing agent containing a compound having a maleimide group, to obtain a long carbon fiber bundle further containing the aqueous dispersion of the secondary sizing agent; and a step for cutting the long carbon fiber bundle containing the aqueous dispersion of the secondary sizing agent. Provided is a chopped carbon fiber bundle that has improved heat resistance and feedability, and that is capable of being produced with high productivity.

Inventors:
KANETA KENJI (JP)
Application Number:
PCT/JP2021/025108
Publication Date:
January 06, 2022
Filing Date:
July 02, 2021
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MITSUBISHI CHEM CORP (JP)
International Classes:
D06M15/37; D06M15/55; D06M101/40
Foreign References:
JP2013142120A2013-07-22
JP2014231652A2014-12-11
JPH08156110A1996-06-18
JPH0138911B21989-08-17
US20050136237A12005-06-23
CN104695228A2015-06-10
JPH07506836A1995-07-27
JP2020125559A2020-08-20
JP2021095532A2021-06-24
Attorney, Agent or Firm:
SHIGENO, Tsuyoshi et al. (JP)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: TABLET AND METHOD FOR MANUFACTURING SAME

Next Patent: SALT OF CURCUMIN MONOGLUCURONIDE