Claims
- 1. An epoxy resin composition comprising epoxy resins selected from the group consisting of diglycidyl ether of 3,3',5,5'-tetramethyl-4,4'-dihydroxydiphenylmethane, diglycidyl ether of 2,2',3,3',5,5'-hexamethyl-4,4'-dihydroxydiphenylmethane and diglycidyl ether of 2,2'-dimethyl-5,5'-di-tert-butyl-4,4'-dihydroxydiphenylmethane, polyphenols as epoxy resin curing agents, and inorganic fillers in an amount of 75% by weight or more, wherein said epoxy resins are solidified by crystallization and have epoxy equivalent of 250 or less and hydrolyzable chlorine content of 1,500 ppm or less by crystallization.
- 2. Cured epoxy resins which are obtained by solidifying epoxy resins selected from the group consisting of diglycidyl ether of 3,3',5,5'-tetramethyl-4,4'-dihydroxydiphenylmethane, diglycidyl ether of 2,2',3,3',5,5'-hexamethyl-4,4'-dihydroxydiphenylmethane and diglycidyl ether of 2,2'-dimethyl-5,5'-di-tert-butyl-4,4'-dihydroxydiphenylmethane and having 250 or less of epoxy equivalent and 1,500 ppm or less of hydrolyzable chlorine content by crystallization, and curing the resulting solid by adding polyphenols as epoxy resin curing agents and adding inorganic fillers in an amount of 75% by weight or more to the resulting solid.
Priority Claims (1)
Number |
Date |
Country |
Kind |
5-163930 |
Jun 1993 |
JPX |
|
Parent Case Info
This application is a continuation of application Ser. No. 08/591,263 filed Dec. 6, 1995, now abandoned.
US Referenced Citations (9)
Foreign Referenced Citations (7)
Number |
Date |
Country |
61-47725 |
Mar 1986 |
JPX |
62-115021 |
May 1987 |
JPX |
62-115057 |
May 1987 |
JPX |
4-183709 |
Jun 1992 |
JPX |
4-198211 |
Jul 1992 |
JPX |
4-288317 |
Oct 1992 |
JPX |
4-372619 |
Dec 1992 |
JPX |
Non-Patent Literature Citations (1)
Entry |
Lee et al, "Handbook of Epoxy Resins", McGraw Hill Pub., pp. 5-16 to 5-18 and 14-1 to 14-4, 1982. |
Continuations (1)
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Number |
Date |
Country |
Parent |
591263 |
Dec 1995 |
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