METHOD FOR PREPARING POLYAMIDE BY ANION RING-OPENING POLYMERIZATION AND POLYAMIDE PREPARED THEREBY

Title:

METHOD FOR PREPARING POLYAMIDE BY ANION RING-OPENING POLYMERIZATION AND POLYAMIDE PREPARED THEREBY

Document Type and Number:

WIPO Patent Application WO/2019/093729

Kind Code:

A3

Abstract:

The present invention relates to a method for preparing a polyamide by anion ring-opening polymerization and a polyamide prepared thereby and, more specifically, to a method for preparing a polyamide by anion ring-opening polymerization and a polyamide prepared thereby, wherein the method is an eco-friendly processing method not using a solvent as a catalyst and enables polymerization to a uniform molecular weight with a high conversion rate in a short polymerization reaction time at a low temperature, compared with an existing polymerization method. The method for preparing a polyamide by anion ring-opening polymerization according to the present invention to attain such a purpose is a method for preparing a polyamide by an anion polymerization reaction, wherein lactam, and relative to 100 parts by weight of the entire lactam, 0.01-20 parts by weight of an alkali metal as an initiator, 0.3-10 parts by weight of a molecular weight adjuster, and 0.002-1.0 parts by weight of carbon dioxide as an activator may be included. As described above, the present invention is directed to an eco-friendly processing method not using a solvent as a catalyst and has an effect of enabling polymerization to a uniform molecular weight with a high conversion rate in a short polymerization reaction time at a low temperature, compared with an existing polymerization method.

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Inventors:

DO SEUNG HOE (KR)
LEE JIN SEO (KR)
KWON KYUNG HO (KR)
KIM DO KYOUNG (KR)
LEE HYE YEON (KR)
YIM KYOUNG WON (KR)

Application Number:

PCT/KR2018/013328

Publication Date:

June 27, 2019

Filing Date:

November 05, 2018

Export Citation:

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Assignee:

HANWHA CHEMICAL CORP (KR)

International Classes:

C08G69/18; C08J5/00; C08K3/12; C08K3/20; C08K3/22; C08K5/16; C08L77/00

Foreign References:

JP2012017476A	2012-01-26
KR20140115171A	2014-09-30
KR20130097294A	2013-09-03
KR20130015154A	2013-02-13
KR20160083649A	2016-07-12
KR20150065080A	2015-06-12

Other References: