Title:
NOVOLAC RESIN AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2010/079673
Kind Code:
A1
Abstract:
Disclosed is a method for producing a novolac resin, wherein a phenol and an aldehyde are reacted with each other in the presence of a catalyst that contains calcium chloride and an acid. The method is characterized in that a novolac resin having a low molecular weight and a low melt viscosity is efficiently produced by reacting a phenol and an aldehyde with each other under mild conditions.
Inventors:
TAKIMOTO SHINICHI (JP)
ONO NORIYOSHI (JP)
ONO NORIYOSHI (JP)
Application Number:
PCT/JP2009/070880
Publication Date:
July 15, 2010
Filing Date:
December 15, 2009
Export Citation:
Assignee:
SHOWA HIGHPOLYMER (JP)
TAKIMOTO SHINICHI (JP)
ONO NORIYOSHI (JP)
TAKIMOTO SHINICHI (JP)
ONO NORIYOSHI (JP)
International Classes:
C08G8/00; C08G8/04
Foreign References:
| JP2007297574A | 2007-11-15 | |||
| JP2002128849A | 2002-05-09 | |||
| JPH0523785A | 1993-02-02 |
Attorney, Agent or Firm:
OHTANI, Tamotsu (JP)
Tamotsu Otani (JP)
Tamotsu Otani (JP)
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