Process for producing high-purity epoxy resin and epoxy...

Details Process for producing high-purity epoxy resin and epoxy... Process for producing high-purity epoxy resin and epoxy...

2007-09-11

2007-09-11

Sellers, Robert (Department: 1712)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C438S127000, C525S507000, C525S533000

Reexamination Certificate

active

10511553

ABSTRACT:
A process for production a high purity epoxy compound with total chlorine content of 500 ppm or less is characterized in that alkali metal hydroxide is added to a bifunctional epoxy compound represented by the general formula (I), in which content of the component with n=0 is not less than 70% and less than 100%, and that reaction is caused to take place at a temperature of 95-150° C. to produce a multi-functional epoxy compound represented by the general formula (II)

REFERENCES:
patent: 4535150 (1985-08-01), Hunter
patent: 4668807 (1987-05-01), Darbellay et al.
patent: 59-43014 (1984-03-01), None
patent: 61-136513 (1986-06-01), None
patent: 62-064817 (1987-03-01), None
patent: 1-168722 (1989-07-01), None
patent: 5-320309 (1993-12-01), None
patent: 6-298904 (1994-10-01), None
patent: 2000-95975 (2000-04-01), None
patent: 2000-239346 (2000-09-01), None
patent: 2002-37851 (2002-02-01), None
patent: 2002-114834 (2002-04-01), None
patent: 2002-338657 (2002-11-01), None
Japanese Patent Abstract No. 62-064817. dated Mar. 23, 1987.

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