METHOD FOR PREPARING (METH)ACRYLONITRILE-BASED POLYMER FOR MANUFACTURE OF CARBON FIBER

Title:

METHOD FOR PREPARING (METH)ACRYLONITRILE-BASED POLYMER FOR MANUFACTURE OF CARBON FIBER

Document Type and Number:

WIPO Patent Application WO/2019/066342

Kind Code:

A1

Abstract:

The present invention relates to a method for preparing a (meth)acrylonitrile-based polymer for the manufacture of a carbon fiber, comprising a step of injecting, into a reactor, a reaction solution comprising a (meth)acrylonitrile-based monomer and a reaction solvent, and carrying out solution polymerization, wherein the solution polymerization is carried out under a condition in which the consumption power of the reactor is 1-5 kW/m3 when the viscosity of the reaction solution within the reactor is 0.1-250 poise, and the solution polymerization is carried out under a condition in which the consumption power of the reactor is 8-13 kW/m3 when the viscosity of the reaction solution within the reactor is greater than 250 poise and less than or equal to 450 poise.

Inventors:

CHO JEONG HUN (KR)
SONG YOUNG SOO (KR)
KIM HYUN MIN (KR)
KIM CHANG HUN (KR)
KIM HYO YONG (KR)
CHO JOON HEE (KR)

Application Number:

PCT/KR2018/010876

Publication Date:

April 04, 2019

Filing Date:

September 14, 2018

Export Citation:

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Assignee:

LG CHEMICAL LTD (KR)

International Classes:

C08F20/44; C08F2/01; C08F2/04; D01F9/22

Foreign References:

JP2013237746A	2013-11-28
KR860000807B1	1986-06-28
KR20140013174A	2014-02-05
JP2014201728A	2014-10-27
JP2015048378A	2015-03-16
JP2012201739A	2012-10-22

Other References: