Title:
BISMALEIMIDE
Document Type and Number:
Japanese Patent JP2020066690
Kind Code:
A
Abstract:
To provide bismaleimide having both excellent dielectric characteristics (dielectric constant and dielectric loss tangent) and excellent dimentional stability, and usable as an isolation layer of a printed circuit for a high-frequency band, an antenna substrate or the like.SOLUTION: There is provided bismaleimide using imide-extended diamine as a diamine component, which is bismaleimide in which the imide-extended diamine contains dimer diamine and fluorine-containing diamine. In this case, 'imide-extended diamine' is 'polyimide with amino groups at both ends' formed by reacting tetracarboxylic dianhydride with an excessive amount of diamine, followed by dewatering cyclization.SELECTED DRAWING: None
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Inventors:
SHIGETA AKIRA
YOSHIDA TAKESHI
YAMADA HIROKI
TAKEUCHI KO
SUGIMOTO YOSUKE
ECHIGO YOSHIAKI
YOSHIDA TAKESHI
YAMADA HIROKI
TAKEUCHI KO
SUGIMOTO YOSUKE
ECHIGO YOSHIAKI
Application Number:
JP2018200984A
Publication Date:
April 30, 2020
Filing Date:
October 25, 2018
Export Citation:
Assignee:
UNITIKA LTD
International Classes:
C08F22/40; C08G73/10
Domestic Patent References:
| JP2018115156A | 2018-07-26 | |||
| JP2017121807A | 2017-07-13 | |||
| JP2016194055A | 2016-11-17 | |||
| JP2014001289A | 2014-01-09 |
Foreign References:
| US20160237311A1 | 2016-08-18 | |||
| WO2017017923A1 | 2017-02-02 | |||
| WO2010053186A1 | 2010-05-14 |