Title:
A manufacturing method of tris phenol methane, and a manufacturing method of an epoxy resin
Document Type and Number:
Japanese Patent JP6059515
Kind Code:
B2
Abstract:
Provided are low color trisphenol methanes, method for producing the same and use thereof. When reacting phenols with aromatic hydroxy aldehydes under acid catalysis and heat, the reaction is performed at a temperature of 100°C or less from the start of the reaction until the reaction rate reaches 90%, after which the temperature is raised and the reaction is performed at over 100°C and 130°C or less in order to produce the trisphenol methanes. Thus, trisphenol methanes with a Gardner color scale of 9 or less (as a 0.5 mass% THF solution), and a low color epoxy resin can be obtained.
Inventors:
Kazuya Takemura
Application Number:
JP2012254952A
Publication Date:
January 11, 2017
Filing Date:
November 21, 2012
Export Citation:
Assignee:
JFE Chemical Co., Ltd.
International Classes:
C07C37/20; C07C39/16; C08G59/06
Domestic Patent References:
| JP10218815A | ||||
| JP8259484A | ||||
| JP7333842A | ||||
| JP2006160663A | ||||
| JP2006113136A | ||||
| JP2005154719A | ||||
| JP2008184417A | ||||
| JP9286847A | ||||
| JP11199658A | ||||
| JP7118603A |
Attorney, Agent or Firm:
Nozomi Watanabe
Haruko Sanwa
Haruko Sanwa