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.
More Like This:
| JP2004035760 | POLYAMIDE RESIN BLAST MATERIAL |
| WO/2004/035658 | DECOMPOSITION-RESISTANT POLYAMIDE AND METHOD FOR THE PRODUCTION THEREOF |
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)
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:
May 16, 2019
Filing Date:
November 05, 2018
Export Citation:
Assignee:
HANWHA CHEMICAL CORP (KR)
International Classes:
C08G69/18; C08J5/00; C08K3/12; C08K3/20; C08K3/22; C08K5/16; C08L77/00
Foreign References:
| US4754000A | 1988-06-28 | |||
| EP1091991A1 | 2001-04-18 | |||
| US3423372A | 1969-01-21 | |||
| EP0156129A1 | 1985-10-02 | |||
| US4067861A | 1978-01-10 | |||
| US3878173A | 1975-04-15 | |||
| US5747634A | 1998-05-05 | |||
| US20160102175A1 | 2016-04-14 | |||
| US5519097A | 1996-05-21 | |||
| US3883608A | 1975-05-13 | |||
| US7135428B2 | 2006-11-14 | |||
| US5362448A | 1994-11-08 |
Other References:
M. P. STEVENS: "Polymer Chemistry", 1990, OXFORD UNIVERSITY PRESS, pages: 429
G. ODIAN: "Principles of Polymerization", 1981, JOHN WILEY & SONS, pages: 541
See also references of EP 3708604A4
G. ODIAN: "Principles of Polymerization", 1981, JOHN WILEY & SONS, pages: 541
See also references of EP 3708604A4
Attorney, Agent or Firm:
KIM, Chang Deok (KR)
Download PDF: