Title:
PRODUCTION METHOD FOR POLYAMIDE-4 PARTICLES
Document Type and Number:
WIPO Patent Application WO/2019/069799
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a new method for producing polyamide-4 particles having a small particle diameter. The production method for polyamide-4 particles of the present invention comprises either polymerizing 2-pyrrolidone in the presence of a polymerization initiator and the lithium salt of 2-pyrrolidone in an aprotic solvent incompatible with 2-pyrrolidone or polymerizing 2-pyrrolidone in the presence of a polymerization initiator, the lithium salt of 2-pyrrolidone, and the sodium salt of 2-pyrrolidone in an aprotic solvent incompatible with 2-pyrrolidone. The obtained polyamide-4 particles have a volume-average particle diameter of 1-100 μm and have a molecular-weight distribution (Mw/Mn) of 1.0-5.0.
More Like This:
| WO/2004/069878 | HETEROCYCLE FUNCTIONALIZED DENDRITIC POLYMERS |
| JPH05295109 | PRODUCTION OF HIGH-PURITY 2-PYRROLIDONE POLYMER |
Inventors:
FUKAWA NAOHIRO (JP)
Application Number:
PCT/JP2018/036109
Publication Date:
April 11, 2019
Filing Date:
September 27, 2018
Export Citation:
Assignee:
NIPPON SODA CO (JP)
International Classes:
C08G69/24
Foreign References:
| JPH06322109A | 1994-11-22 | |||
| JPH0472329A | 1992-03-06 | |||
| JPH05295108A | 1993-11-09 | |||
| JP2009155608A | 2009-07-16 | |||
| JPH07316288A | 1995-12-05 | |||
| JP2017193534A | 2017-10-26 | |||
| JP2016186068A | 2016-10-27 | |||
| JPS376746B1 | ||||
| JPH0539355A | 1993-02-19 |
Other References:
RODA, J. ET AL.: "Polymerization of lactams, 37a, Isolation and Characterization of Clkali Carboxylates of 2-Pyrrolidone", MAKROMOL. CHEM., RAPID COMMUN., vol. 1, 1980, pages 165 - 169, XP055591846
See also references of EP 3693405A4
See also references of EP 3693405A4
Attorney, Agent or Firm:
HIROTA, Masanori (JP)
Download PDF:
Previous Patent: CLEANING RESIN COMPOSITION FOR INJECTION MOLDING MACHINES AND MOLDS
Next Patent: PNEUMATIC TIRE
Next Patent: PNEUMATIC TIRE