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Sealing agent for electrochemical device in which nonaqueous electrolytic solution is used, and sealing agent composition for electrochemical device

A non-aqueous electrolyte and electrochemical technology, applied in the field of sealant compositions for electrochemical devices, can solve the problems of insufficient sealing performance, insufficient wettability and sufficient tightness, etc., and achieve sufficient sealing Effect

Active Publication Date: 2018-08-31
ZEON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since TPC is a resin with higher polarity than polypropylene, etc., there are cases where sufficient wettability and sufficient adhesion cannot be obtained in sealants that do not contain polar groups
That is, when a sealant not containing a polar group, such as a sealant for a polypropylene gasket, is used for a TPC gasket, the sealing performance may become insufficient.

Method used

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  • Sealing agent for electrochemical device in which nonaqueous electrolytic solution is used, and sealing agent composition for electrochemical device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0110] 55 parts of polymer (1) obtained in Polymerization Example 1 as (A) conjugated diene polymer, 15 parts of styrene as (B) aromatic vinyl-conjugated diene block polymer SIS content of 15%, Mw=32000, 30 parts of amine-modified styrene-ethylene-butylene as hydrogenated product of (C) amine-modified aromatic vinyl-conjugated diene block polymer Alkene-styrene block copolymer (Tuftec MP10, manufactured by Asahi Kasei Chemicals Co., Ltd.), 5 parts of carbon black (furnace black with a primary particle size of 10 nm) as (D) inorganic filler, and an organic solvent (xylene) in a belt The mixture was mixed while heating to 50° C. in a flask with a stirring blade to obtain a uniform solution (sealant composition) having a solid content concentration of 5%.

Embodiment 2

[0112] 65 parts of polymer (1) obtained in Polymerization Example 1 as (A) conjugated diene polymer, and 13 parts of polymer (1) as (B) aromatic vinyl-conjugated diene block polymer were carried out. Example 1 Same SIS, 22 parts of amine-modified styrene-ethylene-butylene-styrene block polymer as hydrogenated product of (C) amine-modified aromatic vinyl-conjugated diene block polymer Segment copolymer (Tuftec MP10, manufactured by Asahi Kasei Chemicals), 5 parts of the same carbon black as (D) inorganic filler and organic solvent (xylene) as in Example 1 were heated to 50° C. in a flask with stirring wings. While mixing, a uniform solution (sealant composition) having a solid content concentration of 10% was obtained.

Embodiment 3

[0114] 60 parts of polymer (2) obtained in Polymerization Example 2 as (A) conjugated diene polymer, and 10 parts of polymer (2) as (B) aromatic vinyl-conjugated diene block polymer were carried out. Example 1 Same SIS, 30 parts of amine-modified styrene-ethylene-butylene-styrene block polymer as hydrogenated product of (C) amine-modified aromatic vinyl-conjugated diene block polymer Segment copolymer (Tuftec MP10, manufactured by Asahi Kasei Chemicals), 5 parts of the same carbon black as (D) inorganic filler and organic solvent (xylene) as in Example 1 were heated to 50° C. in a flask with stirring wings. While mixing, a uniform solution (sealant composition) having a solid content concentration of 12% was obtained.

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Abstract

The objective of the present invention is to provide a sealing agent for an electrochemical device in which a nonaqueous electrolytic solution is used, the sealing agent having adequate sealing performance for a high-polarity resin. This sealing agent contains (A) a conjugated diene polymer, (B) an aromatic vinyl-conjugated diene block polymer, and (C) a hydrogenation product of an amine-modifiedaromatic vinyl-conjugated diene block polymer.

Description

technical field [0001] The present invention relates to a sealant for electrochemical devices that can be used in electrochemical devices using non-aqueous electrolytic solutions such as lithium ion batteries, and a sealant composition for electrochemical devices using the sealant. Background technique [0002] As an electrochemical device using an electrolytic solution (non-aqueous electrolytic solution) containing an organic solvent, there are electric double layer capacitors and lithium ion batteries. In the electrochemical device described above, it is necessary to prevent evaporation and leakage of the sealed electrolyte solution, and to prevent intrusion of water and water vapor from the outside. Therefore, sealants are widely used in electrochemical devices. [0003] Vinyl aromatic hydrocarbon-conjugated diene block polymers or hydrogenated products thereof, conjugated diene polymers, and the like have been proposed as sealing agents (for example, refer to Patent Doc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/08C08K3/00C08L47/00C08L53/02C09K3/10H01G11/80H01M10/052H01M10/0566H01M50/171H01M50/186H01M50/193
CPCC08K3/00C09K3/10C08L47/00C08L53/02H01G11/80H01M10/052H01M10/0566Y02E60/10H01M50/171H01M50/186H01M50/193C08K3/013C08L53/025H01M10/0525H01M50/183Y02E60/13Y02T10/70C08L25/18C08L67/00C08L2205/025C08L2205/03C08L2207/04
Inventor 前田耕一郎
Owner ZEON CORP
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