Title:
CORROSION-RESISTANT ELECTRONIC SUBSTRATE AND COATING COMPOSITION USED FOR SAME
Document Type and Number:
WIPO Patent Application WO/2019/030953
Kind Code:
A1
Abstract:
Provided are a corrosion-resistant electronic substrate wherein corrosion resistance is enhanced by means of shielding against corrosive gas such as hydrogen sulfide gas, and a corrosive gas-resistant shielding coating composition for forming a coating layer over the corrosion-resistant electronic substrate. A corrosion-resistant electronic substrate 1 comprises a substrate body 3 whereon are mounted a plurality of electronic components 2, after which a first coating layer 4 is formed over the entirety or a part of the surface thereof, followed by a second coating layer 5, so as to coat a conductive metal portion 20 including electrodes 21 of the electronic components 2 with the coating layers 4 and 5. The first coating layer 4 has a tanδ of at least 0.10 at -20°C to 0°C and 10 Hz according to a post-curing DMA. The second coating layer 5, in the context of the distribution of measured values of free volume radius according to positron annihilation lifetime method post-curing, has at least 70% distribution area for radii of 0.32 nm or less (excluding 0).
Inventors:
NISHIKAWA KAZUYOSHI (JP)
NAKAMURA MASAKI (JP)
NAKAMURA MASAKI (JP)
Application Number:
PCT/JP2018/006335
Publication Date:
February 14, 2019
Filing Date:
February 22, 2018
Export Citation:
Assignee:
OMRON TATEISI ELECTRONICS CO (JP)
International Classes:
H05K3/28; C09D5/00; C09D5/08; C09D201/00
Domestic Patent References:
| WO2014175169A1 | 2014-10-30 |
Foreign References:
| JP2015002237A | 2015-01-05 | |||
| JP2001168493A | 2001-06-22 | |||
| JP2007004085A | 2007-01-11 |
Attorney, Agent or Firm:
ARC PATENT ATTORNEYS' OFFICE (JP)
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