JPS6437045A - Electronic component sealing agent - Google Patents
Electronic component sealing agentInfo
- Publication number
- JPS6437045A JPS6437045A JP19330587A JP19330587A JPS6437045A JP S6437045 A JPS6437045 A JP S6437045A JP 19330587 A JP19330587 A JP 19330587A JP 19330587 A JP19330587 A JP 19330587A JP S6437045 A JPS6437045 A JP S6437045A
- Authority
- JP
- Japan
- Prior art keywords
- sealing agent
- iii
- electronic component
- occupies
- formulas
- 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
Abstract
PURPOSE:To obtain an electronic component sealing agent quite low in melt viscosity, high in tenacity, and excellent in heat- and humidity-resistant features by a method wherein such a sealing agent is composed of a specified aromatic polyester. CONSTITUTION:The agent of this design is an aromatic polyester which includes structural units represented by formulas I-IV. Unit I occupies 40-90mol% of the entirety, II+III+IV occupies 60-10mol%, mol ratio II/III is 8/2-2/8, and IV/[II+III+IV] occupies 0-40mol% of the entirety. There exists a 'meta-' or 'para-' relationship, wherein the meta/para ratio is 0/100-35/65, between carbonyl groups in dicarboxylic acids in formulas I and III. In the formulas, R represents one or more substitutional groups selected out of t-butyl groups and phenyl groups, X represents a group such as formula V, and Y represents a group such as formula VI. This method yields an electronic component sealing agent, low in melt viscosity, high in tenacity, and excellent in humidity- and heat-resistant features.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19330587A JPS6437045A (en) | 1987-07-31 | 1987-07-31 | Electronic component sealing agent |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19330587A JPS6437045A (en) | 1987-07-31 | 1987-07-31 | Electronic component sealing agent |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6437045A true JPS6437045A (en) | 1989-02-07 |
Family
ID=16305700
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19330587A Pending JPS6437045A (en) | 1987-07-31 | 1987-07-31 | Electronic component sealing agent |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6437045A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0394813A2 (en) * | 1989-04-26 | 1990-10-31 | The Dow Chemical Company | Melt processable thermotropic aromatic copolyesters and process for preparing same |
EP0399349A2 (en) * | 1989-05-25 | 1990-11-28 | The Dow Chemical Company | Melt processable thermotropic aromatic copolyesters and process for preparing same |
-
1987
- 1987-07-31 JP JP19330587A patent/JPS6437045A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0394813A2 (en) * | 1989-04-26 | 1990-10-31 | The Dow Chemical Company | Melt processable thermotropic aromatic copolyesters and process for preparing same |
EP0394813A3 (en) * | 1989-04-26 | 1992-04-08 | The Dow Chemical Company | Melt processable thermotropic aromatic copolyesters and process for preparing same |
EP0399349A2 (en) * | 1989-05-25 | 1990-11-28 | The Dow Chemical Company | Melt processable thermotropic aromatic copolyesters and process for preparing same |
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