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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:
A2
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.

Inventors:
DO, Seung Hoe (910-803, 56 Eungubinam-ro,Yuseong-gu, Daejeon, 34090, KR)
LEE, Jin Seo (A-749, 109 Pangyoyeok-ro,Bundang-gu, Seongnam-si, Gyeonggi-do, 13531, KR)
KWON, Kyung Ho (105-302, 97-1 Haedong-ro,Dong-gu, Daegu, 41051, KR)
KIM, Do Kyoung (151 Seodong-ro, Geumjeong-gu, Busan, 46320, KR)
LEE, Hye Yeon (30263-9, Namhyeon-gilGwanak-gu, Seoul, 08807, KR)
YIM, Kyoung Won (243 Samgak-dong, Buk-gu, Gwangju, 61047, KR)
Application Number:
KR2018/013328
Publication Date:
May 16, 2019
Filing Date:
November 05, 2018
Export Citation:
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Assignee:
HANWHA CHEMICAL CORPORATION (86 Cheonggyecheon-ro, Jung-gu, Seoul, 04541, KR)
International Classes:
C08G69/18; C08J5/00; C08K3/12; C08K3/20; C08K3/22; C08K5/16; C08L77/00
Attorney, Agent or Firm:
KIM, Chang Deok (50214, Teheran-ro 19-gilGangnam-gu, Seoul, 06131, KR)
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