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Desiccant, sealing structure, and organic EL element

A desiccant and sealant technology, applied in the direction of drier, electrical components, electric solid devices, etc., can solve the problems of thickening of desiccant and difficulty in coating desiccant

Pending Publication Date: 2021-10-22
FUTABA CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the desiccant, when adding particles of alkaline earth metal oxides such as calcium oxide as the water-absorbing component, the water-absorbing performance is improved, but the desiccant thickens due to the aggregation of particles, etc., and it tends to be difficult to apply the desiccant

Method used

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  • Desiccant, sealing structure, and organic EL element
  • Desiccant, sealing structure, and organic EL element
  • Desiccant, sealing structure, and organic EL element

Examples

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Effect test

Embodiment 1

[0051] A modified fluororesin having poly(oxyperfluoropropylene) chains, siloxane groups bonded to the poly(oxyperfluoropropylene) chains, and vinyl groups bonded to the siloxane groups (Shin-Etsu Chemical Co., Ltd., product name "SIFEL8370A").

[0052] Calcium oxide particles adjusted to an average particle diameter of 2 μm and a modified fluororesin as a binder were mixed and centrifuged at 1000 rotations / min for 5 minutes to obtain a paste-like desiccant. Table 1 shows the content of calcium oxide particles based on the total amount of the desiccant in terms of mass % and grams per 1 mL of the desiccant. Table 1 also shows the theoretical value of the water absorption capacity of the desiccant obtained from the content of calcium oxide particles.

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Abstract

The invention provides a desiccant, a sealing structure and an organic EL element. The desiccant contains an adhesive; and oxide particles comprising an alkaline earth metal oxide dispersed in the adhesive. The adhesive contains a modified fluororesin. The modified fluororesin has a fluorine-containing chain including a fluorinated hydrocarbon group, a siloxane group bonded to the fluorine-containing chain, and an organic group bonded to the siloxane group and having at least one functional group selected from the group consisting of a vinyl group, an acryloyl group, a methacryloyl group, and an epoxy group.

Description

technical field [0001] The invention relates to a desiccant, a sealing structure and an organic EL element. Background technique [0002] With regard to organic EL elements, it is desired to prevent the occurrence and growth of non-light-emitting portions of the organic layer called black spots. In particular, it is known that even an extremely small amount of water has a great influence on the occurrence of dark spots. Therefore, organic EL elements are generally provided with desiccants for preventing permeation of moisture and oxygen (for example, Patent Documents 1 to 3). [0003] Patent Document 1: Japanese Patent Laid-Open No. 2003-16307 [0004] Patent Document 2: Japanese Patent Laid-Open No. 2007-012372 [0005] Patent Document 3: Japanese Patent Laid-Open No. 2019-084528 [0006] When adding particles of alkaline earth metal oxides such as calcium oxide to the desiccant as a water-absorbing component, the water-absorbing performance is improved, but the desicca...

Claims

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Application Information

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IPC IPC(8): B01J20/04B01J20/28H01L51/52
CPCB01J20/041B01J20/2803H10K50/846H10K50/8426C09F9/00C08L71/02C08K3/22C08G65/336C08G65/226C09K3/10H10K71/00
Inventor 白神崇生小川一道真野亚香音
Owner FUTABA CORPORATION
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