Title:
EPOXY RESIN MIXTURE AND EPOXY RESIN COMPOSITION FOR POWDER COATING MATERIAL
Document Type and Number:
Japanese Patent JP3874962
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain an epoxy resin mixture which has a crystallizing property at ordinary temperature, has excellent handling workability, can express an excellent low viscosity in a melted state and is useful as a powder coating material, by compounding a tetrabromobisphenol A type epoxy resin and a bisphenol type epoxy resin in a specific ratio.
SOLUTION: This epoxy resin mixture comprises (A) 40-95 pts.wt. of a tetrabromobisphenol A type epoxy resin of formula I [(n) is 0-1 on the average] and (B) 5-60 pts.wt. of a 4,4'-bisphenol type epoxy resin of formula II [(m) is 0-0.5 on the average]. The mixture is preferably obtained by reacting a mixture of tetrabromobisphenol A with 4,4'-bisphenol with an epihalohydrin in an amount of 4-40 moles per mole of the mixture of the phenol compounds in the presence of an alkali metal hydroxide. The mixture of the tetrabromobisphenol A with the 4,4'-bisphenol is prepared so as to finally give the above ratio. The obtained mixture preferably has a melt viscosity of ≤0.4 P at 150°C.
Inventors:
Atsushi Hayakawa
Yasuyuki Murata
Yasuyuki Murata
Application Number:
JP10985599A
Publication Date:
January 31, 2007
Filing Date:
March 15, 1999
Export Citation:
Assignee:
Japan Epoxy Resin Co., Ltd.
International Classes:
C08G59/30; C08G59/06; C08G59/24; C08G59/42; C08G59/50; C09D5/03; C09D163/00; (IPC1-7): C08G59/30; C08G59/06; C08G59/24; C08G59/42; C08G59/50; C09D5/03; C09D163/00
Domestic Patent References:
| JP6256686A | ||||
| JP8109274A |
Attorney, Agent or Firm:
Kanaya