JPS6485214A - Preparation of high-purity flame-retardant epoxy resin - Google Patents
Preparation of high-purity flame-retardant epoxy resinInfo
- Publication number
- JPS6485214A JPS6485214A JP22409587A JP22409587A JPS6485214A JP S6485214 A JPS6485214 A JP S6485214A JP 22409587 A JP22409587 A JP 22409587A JP 22409587 A JP22409587 A JP 22409587A JP S6485214 A JPS6485214 A JP S6485214A
- Authority
- JP
- Japan
- Prior art keywords
- flame
- epoxy resin
- retardant epoxy
- obtd
- novolak resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Epoxy Resins (AREA)
- Sealing Material Composition (AREA)
Abstract
PURPOSE:To prepare a high-purity flame-retardant epoxy resin having excellent heat resistance and flame retardance, by using an amino compd. when a novolak resin is reacted with bromine or after the reaction and epoxidizing the brominated novolak resin obtd. CONSTITUTION:When a novolak resin of the formula (wherein R is H, CH3; n is an average value and 0-10) is brominated by reacting with bromine and the brominated novolak resin obtd. is reacted with epihalohydrin in the presence of an alkali to prepare a flame-retardant epoxy resin, the above described bromination reaction is carried out in the presence of an amino compd. (e.g., hydrazine, dimethylamine, or urea) and/or the product of the bromination reaction is treated with an amino compd. A high-purity and flame-retardant epoxy resin having excellent heat resistance and flame retardance and being especially suitable for a sealing resin for semiconductors is obtd. by using the brominated novolak resin thus obtd.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22409587A JPS6485214A (en) | 1987-06-16 | 1987-09-09 | Preparation of high-purity flame-retardant epoxy resin |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14792487 | 1987-06-16 | ||
JP22409587A JPS6485214A (en) | 1987-06-16 | 1987-09-09 | Preparation of high-purity flame-retardant epoxy resin |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18252789A Division JPH0681779B2 (en) | 1989-07-17 | 1989-07-17 | Manufacturing method of high-purity flame-retardant epoxy resin |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6485214A true JPS6485214A (en) | 1989-03-30 |
Family
ID=26478315
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22409587A Pending JPS6485214A (en) | 1987-06-16 | 1987-09-09 | Preparation of high-purity flame-retardant epoxy resin |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6485214A (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6063218A (en) * | 1983-09-14 | 1985-04-11 | Sumitomo Chem Co Ltd | Bromine-containing novolak-type phenolic resin glycidyl ether and sealing compound consisting mainly of the same |
JPS60210622A (en) * | 1984-04-05 | 1985-10-23 | Sanyo Kokusaku Pulp Co Ltd | Production of high-purity, flame-retarding epoxy resin |
JPS61162514A (en) * | 1985-01-09 | 1986-07-23 | Hitachi Ltd | Flame-retardant epoxy resin molding composition, and electronic part encapsulated therewith |
JPS61168617A (en) * | 1985-01-21 | 1986-07-30 | Sanyo Kokusaku Pulp Co Ltd | Production of high-purity brominated epoxy resin |
-
1987
- 1987-09-09 JP JP22409587A patent/JPS6485214A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6063218A (en) * | 1983-09-14 | 1985-04-11 | Sumitomo Chem Co Ltd | Bromine-containing novolak-type phenolic resin glycidyl ether and sealing compound consisting mainly of the same |
JPS60210622A (en) * | 1984-04-05 | 1985-10-23 | Sanyo Kokusaku Pulp Co Ltd | Production of high-purity, flame-retarding epoxy resin |
JPS61162514A (en) * | 1985-01-09 | 1986-07-23 | Hitachi Ltd | Flame-retardant epoxy resin molding composition, and electronic part encapsulated therewith |
JPS61168617A (en) * | 1985-01-21 | 1986-07-30 | Sanyo Kokusaku Pulp Co Ltd | Production of high-purity brominated epoxy resin |
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