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Long chain ester mixture containing end carboxyl prepared electrolysing solution and process for producing the same

A carboxyl-terminated, long-chain ester technology, applied in the field of aluminum electrolytic capacitor driving electrolyte and its preparation, to achieve the effects of good solubility and high flashover voltage

Active Publication Date: 2010-06-16
SHENZHEN CAPCHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electrolytic solution prepared by the present invention overcomes the defects existing in the existing electrolytic solution

Method used

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  • Long chain ester mixture containing end carboxyl prepared electrolysing solution and process for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Example 1: 1.5 mol (303 g) of sebacic acid, 1 mol (106 g) of diethylene glycol, and 4 g of 98% sulfuric acid were mixed uniformly, slowly heated to 160° C., kept at a constant temperature for 3 hours under stirring, washed off the sulfuric acid with hot water after cooling, and The esterified product is made into ammonium salt and formulated into 20% ethylene glycol solution.

Embodiment 2

[0049] Example 2: 1.6mol (323g) of sebacic acid, 1mol (182g) of mannitol, and 4g of 98% sulfuric acid were mixed uniformly, slowly heated to 160°C, kept at a constant temperature for 3 hours under stirring, washed off the sulfuric acid with hot water after cooling, and the The esterified product is made into ammonium salt, and then made into 20% ethylene glycol solution.

Embodiment 3

[0050] Example 3: 1.6 mol (323 g) of sebacic acid, 1 mol (92 g) of glycerin, and 4 g of 98% sulfuric acid were mixed evenly, slowly heated to 160 ° C, kept at a constant temperature for 3 hours under stirring, and after cooling, the sulfuric acid was washed away with hot water, and the ester Compound made into ammonium salt, dubbed 20% ethylene glycol solution.

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Abstract

The invention relates to a long chain ester hybrid which used in the aluminum electrolytic capacitor to drive cherish end carboxyl group as well as the electrolyte and the preparation method of the electrolyte, which feature lies in: the electrolyte has high fire voltage and good solubility, of which the long chain ester hybrid of the cherish end carboxyl group contains dual or polybasic alcohol get along with dual or polyatomic acid condensed through 1-3 mole ratio, and the sum of the carbon on the alcohol backbone and the carbon on the acid backbone are 10 or above 10; the electrolyte contains the salt, ethylene glycol, additive and water; The preparation method of electrolyte includes: The preparation of esterification -> the preparation of ammonium salt -> the preparation of glycol solution -> join the chemical additive and the water -> electrolyte.

Description

technical field [0001] The invention relates to an aluminum electrolytic capacitor driving electrolyte and a preparation method thereof, and mainly refers to an electrolyte of a carboxyl-terminated long-chain ester mixture and a preparation method thereof. Background technique [0002] The electrolyte of the known medium and high voltage electrolytic capacitors uses ethylene glycol as the solvent, boric acid or ammonium pentaborate and other inorganic compounds as the main solute, and later uses azelaic acid, sebacic acid, dodecanedioic acid and its ammonium Salt and the like are used as the main solute of the electrolyte, and the above inorganic salts and organic acid salts are also used as the solute. Such electrolytes have the problem of low flash fire voltage. Among them, boric acid or its salt will also produce water with ethylene glycol at high temperature to affect the life of the capacitor, while ammonium sebacate, ammonium dodecanoic acid, etc. have low solubility i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/022H01G9/035C07C69/003C08G63/66
Inventor 郑仲天
Owner SHENZHEN CAPCHEM TECH CO LTD