Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...
Patent
1994-02-14
1995-09-12
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having at least one -n=c=x group as well as...
528 87, 528 88, 528 93, C08G 1828, C08G 5900, C08G 5968
Patent
active
054497370
ABSTRACT:
A reaction product formed between an epoxy resin, a phenol compound such as bisphenol or the like and an isocyanate compound contains oxazolidone rings and it is a polymeric epoxy resin. Herein is provided an epoxy resin composition comprising said reaction product and a curing agent.
The said reaction product contains oxazolidone rings and epoxy groups, and is excellent in heat resistance and adhesive property. Further said reaction product is made into a polymer by the use of the bisphenol compound and at the same time it contains oxazolidone rings; it is excellent in toughness and water resistance. When a tetrabromobisphenol is used as the bisphenol compound, flame retardance is also good.
Accordingly, the epoxy resin composition of the present invention is excellent in heat resistance, toughness, adhesive property and water resistance. When a brominated compound is used as the phenol compound, the epoxy resin composition of the invention exhibits an excellent flame retardance.
REFERENCES:
patent: 3979365 (1976-09-01), Tanaka et al.
patent: 4070416 (1978-01-01), Narahara et al.
patent: 5112932 (1992-05-01), Koenig et al.
Japan Industrial Standard, K 7236-1986, pp. 1-6.
Japanese Industrial Standard, Z 2247-1993, pp. 1-3.
Izumi Akihiro
Uchida Hiroshi
Ciba-Geigy Corporation
Foelak Morton
Teoli, Jr. William A.
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