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Method for manufacturing hydrogenated nitrile rubber

A technology of hydrogenated nitrile rubber and a manufacturing method, which is applied in the field of rubber cross-linked products, can solve the problems of inability to use heat and oil resistance, resistance, that is, insufficient heat and oil resistance, and achieve excellent adhesion, heat and oil resistance Excellent properties, high tensile strength and elongation

Active Publication Date: 2020-06-09
ZEON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, when the hydrogenated nitrile rubber obtained in Patent Document 1 is subjected to repeated immersion in oil and thermal aging, its resistance, that is, heat resistance and oil resistance is not sufficient, and it cannot be used in contact with oil at high temperatures. Applications of heat and oil resistance

Method used

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  • Method for manufacturing hydrogenated nitrile rubber

Examples

Experimental program
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Effect test

Embodiment 1

[0119] The aluminum sulfate aqueous solution (C1-1) of 1500 parts is adjusted so that the concentration of aluminum sulfate is 0.2% by weight. The above-mentioned aluminum sulfate aqueous solution (C1-1) contains 100 parts of nitrile rubber component is 3 parts of aluminum sulfate. The prepared 0.2% by weight aluminum sulfate aqueous solution (C1-1) was heated to 30°C. Next, nitrile rubber latex (L1) in an amount of 100 parts in terms of nitrile rubber components was added to 1500 parts (3 parts in terms of aluminum sulfate) of an aqueous aluminum sulfate solution (C1-1) heated to 30° C. , was solidified by stirring at a temperature of 30° C., and the obtained solidified product was washed with water, separated by filtration, and vacuum-dried at 60° C. for 12 hours to obtain a solid nitrile rubber (N1).

[0120] Next, the obtained nitrile rubber (N1) was dissolved in acetone so that the concentration was 12% by weight, whereby an acetone solution (S1-1) of nitrile rubber was ...

Embodiment 2

[0125] The aluminum sulfate aqueous solution (C1-2) of 1000 parts is adjusted so that the concentration of aluminum sulfate is 0.2% by weight. The above-mentioned aluminum sulfate aqueous solution (C1-2) contains 100 parts of nitrile rubber component is 2 parts of aluminum sulfate. The prepared 0.2% by weight aluminum sulfate aqueous solution (C1-2) was heated to 30°C. Next, nitrile rubber latex (L1) in an amount of 100 parts in terms of nitrile rubber components was added to 1000 parts (2 parts in terms of aluminum sulfate) of an aqueous aluminum sulfate solution (C1-2) heated to 30° C. , was stirred at a temperature of 30° C. to solidify, and the obtained solidified product was washed with water, separated by filtration, and vacuum-dried at 60° C. for 12 hours to obtain a solid nitrile rubber (N2).

[0126] Next, using the obtained nitrile rubber (N2), preparation of an acetone solution and hydrogenation reaction were performed in the same manner as in Example 1 to obtain a...

Embodiment 3

[0130] The magnesium sulfate aqueous solution (C1-3) of 500 parts is adjusted to the magnesium sulfate concentration and is 2% by weight, and the above-mentioned magnesium sulfate aqueous solution (C1-3) contains 100 parts of nitrile rubber component is 10 parts of magnesium sulfate. The prepared 2% by weight aqueous solution of magnesium sulfate (C1-3) was heated to 30°C. Next, 100 parts of nitrile rubber latex (L1) in terms of nitrile rubber components was added to 500 parts (10 parts in terms of magnesium sulfate) of an aqueous solution of magnesium sulfate (C1-3) heated to 30°C. , was stirred at a temperature of 30° C. to solidify, and the obtained solidified product was washed with water, separated by filtration, and vacuum-dried at 60° C. for 12 hours to obtain a solid nitrile rubber (N3).

[0131] Next, using the obtained nitrile rubber (N3), preparation of an acetone solution, hydrogenation reaction, and coagulation after the hydrogenation reaction were performed in t...

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Abstract

Provided is a method for manufacturing a hydrogenated nitrile rubber having an iodine value not more than 120, the method comprising: a first coagulation step for adding, as a coagulant, a non-halogenatom-containing metallic salt to a latex of a nitrile rubber so as to coagulate the nitrile rubber; a solution preparation step for dissolving the coagulated nitrile rubber in an organic solvent so as to prepare a nitrile rubber solution; a hydrogenation step for performing a hydrogenation reaction on the nitrile rubber solution so as to obtain a hydrogenated nitrile rubber solution; and a secondcoagulation step for adding, as a coagulant, a divalent metallic salt to the hydrogenated nitrile rubber so as to coagulate the hydrogenated nitrile rubber.

Description

technical field [0001] The present invention relates to a method for producing hydrogenated nitrile rubber, and in more detail, relates to a method for producing hydrogenated nitrile rubber capable of forming high tensile strength and elongation, heat and oil resistance, and high production efficiency. Cross-linked rubber with excellent properties and excellent adhesion to metals. Background technique [0002] Nitrile rubber (acrylonitrile-butadiene copolymer rubber) has been used as a material for automotive rubber parts such as hoses and hard tubes by making effective use of its oil resistance, mechanical properties, and chemical resistance. In addition, the polymerization of nitrile rubber Hydrogenated nitrile rubber (hydrogenated acrylonitrile-butadiene copolymer rubber) obtained by hydrogenating the carbon-carbon double bond in the main chain, because of its excellent heat resistance, it is used for rubber such as belts, hoses, and separators Components. [0003] For ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08C19/02C08C1/15
CPCC08C1/15C08C19/02C08F236/12C08F236/06C08K3/04C08F220/44C08F2/26C08F4/34C08F2/38C08F220/1804C08L15/005C08F8/04C08F6/22
Inventor 中井章人
Owner ZEON CORP
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