Title:
METHOD FOR MANUFACTURING NYLON 6
Document Type and Number:
WIPO Patent Application WO/2014/136747
Kind Code:
A1
Abstract:
Provided is a method for manufacturing nylon 6, said method being capable of producing a higher degree of crystallinity in a polymer at the end of a polymerization step performed on an anionically polymerizable caprolactam melt. The present invention is a method in which molten caprolactam in a reactor is anionically polymerized in the presence of a carbodiimide compound and both an anionic-polymerization catalyst and an activator, neither of which is a carbodiimide compound, and a polymer is obtained from the reactor following the end of the polymerization step, yielding nylon 6 with a degree of crystallinity of at least 42% without raising the temperature of the interior of the reactor from the temperature thereof at the end of the polymerization step.
Inventors:
YASUI TSUTOMU (JP)
Application Number:
PCT/JP2014/055385
Publication Date:
September 12, 2014
Filing Date:
March 04, 2014
Export Citation:
Assignee:
NAGASE CHEMTEX CORP (JP)
International Classes:
C08G69/18
Foreign References:
| JP2003518179A | 2003-06-03 | |||
| JP2005513206A | 2005-05-12 | |||
| JPS6429428A | 1989-01-31 | |||
| JP2009197231A | 2009-09-03 | |||
| JP2004124010A | 2004-04-22 | |||
| JP2012041526A | 2012-03-01 | |||
| JPH09328609A | 1997-12-22 | |||
| JP2007084747A | 2007-04-05 | |||
| JP2005513206A | 2005-05-12 | |||
| JPH10292041A | 1998-11-04 |
Other References:
See also references of EP 2966111A4
Attorney, Agent or Firm:
FURUTANI, Shinya (JP)
Shin-ya Furuya (JP)
Shin-ya Furuya (JP)
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