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Polymer particles

A polymer and particle technology, applied in the field of polymer particles, can solve the problems that polymer particles have not been established

Pending Publication Date: 2022-07-08
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, polymer particles that form a coating film with excellent flexibility and chemical resistance have not yet been established

Method used

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  • Polymer particles
  • Polymer particles

Examples

Experimental program
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Effect test

Embodiment 1

[0080] 120 parts of ion-exchanged water and 1 part of アデカリアソーブSR-1025 (an emulsifier manufactured by Adeka Co., Ltd.) were put into the reactor, and stirring was started. To this was added 0.4 part of 2,2'-azobis(2-(2-imidazolin-2-yl)propane) (Wako Pure Chemical Industries, Ltd.) under a nitrogen atmosphere, and 2,2,2,3 methacrylic acid was added to it. 30 parts of 2-trifluoroethyl ester (3FMA), 54 parts of cyclohexyl acrylate (CHA), 2 parts of 4-hydroxybutyl acrylate (4HBA), UF-C052 (polyethylene glycol dimethacrylate, co-prosperity) Tg of polymer obtained by polymerizing polyethylene glycol dimethacrylate UF-C052: -44°C) 14 parts, manufactured by Shaka Chemical Co., Ltd., 9 parts of Adacariya SR-1025 (emulsifier made by Adeka Co., Ltd.) The monomer mixture composed of 115 parts of ion-exchanged water was continuously added dropwise at 60° C. over 2 hours, and a polymerization treatment was performed over 4 hours after the completion of the dropwise addition. The obtained po...

Embodiment 2

[0088] Except having changed the composition ratio of the monomer mixture to the composition shown in Table 1, it carried out similarly to Example 1, and obtained the polymer particle. The obtained polymer particles are as shown in Table 1.

Embodiment 3

[0090] The crosslinking agent (D) was changed to polyalkylene glycol dimethacrylate PDE-600 (manufactured by NOF Corporation, a polymer obtained by polymerizing polyalkylene glycol dimethacrylate PDE-600 Tg: -34°C), except that the composition ratio of the monomer mixture was changed to the composition shown in Table 1, polymer particles were obtained in the same manner as in Example 1. The obtained polymer particles are as shown in Table 1.

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Abstract

Provided are polymer particles containing a structural unit derived from an acrylate monomer, the polymer particles being capable of forming a coating film having excellent flexibility and chemical resistance by being mixed in small amounts with other particles. The present invention relates to particles comprising a polymer having a glass transition temperature (Tg) of from 20 DEG C to 80 DEG C (inclusive), characterized in that a particle film comprising polymer particles has an elastic modulus of 1.7 GPa or less and a volume average particle diameter in water of 100-500 nm, and contains a structural unit derived from an acrylate monomer.

Description

technical field [0001] The present invention relates to polymer particles capable of forming a coating film having excellent flexibility and chemical resistance. Background technique [0002] The polymer particles are used for binder applications aimed at improving the battery characteristics of lithium ion secondary batteries, and for the purpose of imparting adhesiveness by coating to various substrates. Various properties of polymer particles are required depending on the application to be used, and various proposals have been made in order to satisfy such requirements (for example, refer to Patent Documents 1 to 3). [0003] However, polymer particles that form a coating film excellent in flexibility and chemical resistance have not yet been established. [0004] prior art literature [0005] Patent Literature [0006] Patent Document 1: Japanese Patent No. 6111895 [0007] Patent Document 2: Japanese Patent No. 6011608 [0008] Patent Document 3: Japanese Patent No...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F222/18
CPCC08F290/04C08F222/18Y02E60/10C08F220/22C08F220/281C08F222/102C08F2/24
Inventor 今津直树佐藤谦一甲斐信康杉浦美月小田岛智幸
Owner TORAY IND INC