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Title:
POLYHYDRIC HYDROXY RESIN, EPOXY RESIN, PRODUCTION METHOD THEREFOR, EPOXY RESIN COMPOSITION AND CURED PRODUCT THEREOF
Document Type and Number:
WIPO Patent Application WO/2012/043213
Kind Code:
A1
Abstract:
Provided are an epoxy resin, a polyhydric hydroxy resin and composition thereof that produce cured products with excellent flame retardancy, moisture resistance, low elasticity, etc. and are suitable for uses such as sealing electronic parts, circuit board material, etc. By reacting 0.3-1.0 moles of a styrene with respect to 1 mole of a phenol novolac as a polyhydric hydroxy compound in the presence of an acid catalyst, a styrene-modified polyhydric hydroxy resin is obtained, wherein the area% of the monohydric hydroxy compound by-product detected by gel permeation chromatography is 3% or less. An epoxy resin is obtained by reacting the styrene-modified polyhydric hydroxy resin with epichlorohydrin. The epoxy resin composition contains the styrene-modified polyhydric hydroxy resin or epoxy resin as an essential component.

Inventors:
YAMADA HISASHI (JP)
OMURA MASAKI (JP)
AOYAGI EIJIRO (JP)
NAKAHARA KAZUHIKO (JP)
KAJI MASASHI (JP)
Application Number:
PCT/JP2011/070804
Publication Date:
April 05, 2012
Filing Date:
September 13, 2011
Export Citation:
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Assignee:
NIPPON STEEL CHEMICAL CO (JP)
YAMADA HISASHI (JP)
OMURA MASAKI (JP)
AOYAGI EIJIRO (JP)
NAKAHARA KAZUHIKO (JP)
KAJI MASASHI (JP)
International Classes:
C08G8/30; C07C39/15; C08G8/00; C08G59/62
Foreign References:
JPH05295061A1993-11-09
JP2004250479A2004-09-09
JPH05132544A1993-05-28
JPS4852895A1973-07-25
JPS6166709A1986-04-05
Attorney, Agent or Firm:
SASAKI Kazuya et al. (JP)
Kazuya Sasaki (JP)
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Claims:



 
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