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Title:
METHOD FOR PRODUCING LIQUID CRYSTAL POLYESTER FILM
Document Type and Number:
Japanese Patent JP2012149232
Kind Code:
A
Abstract:

To produce a liquid crystal polyester film having excellent thermal conductivity in a thickness direction.

The method for producing a liquid crystal polyester film comprises: casting a liquid composition containing a liquid crystal polyester and a solvent; then removing the solvent; raising a temperature of the obtained film from at most 150°C to a temperature of at least a liquid crystal transition temperature and at most 80°C above the liquid crystal transition temperature of the liquid crystal polyester at a rate of at least 1.0°C/minute; and heat-treating at a temperature of at least the liquid crystal transition temperature and at most 80°C above the liquid crystal transition temperature of the liquid crystal polyester to obtain the liquid crystal polyester film. It is preferred to use, as the liquid crystal polyester, those having a liquid crystal transition temperature of at most 320°C.


Inventors:
MIYAKOSHI RYO
KONDO GOJI
OKAMOTO SATOSHI
Application Number:
JP2011273055A
Publication Date:
August 09, 2012
Filing Date:
December 14, 2011
Export Citation:
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Assignee:
SUMITOMO CHEMICAL CO
International Classes:
C08J5/18; C08G63/06
Domestic Patent References:
JP2006088426A2006-04-06
JP2005290100A2005-10-20
JP2007106107A2007-04-26
JP2004250688A2004-09-09
JP2004315678A2004-11-11
Attorney, Agent or Firm:
Toru Nakayama
Toru Sakamoto



 
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