The disadvantages of the conventional organic ion exchange resins are low heat resistance and poor resistance to organic solvents. Ion exchangers made of clay materials and zeolite have long been known. Their disadvantages include poor reproducibility of performance and poor water resistance.
IXE is a series of inorganic ion exchangers which overcame the disadvantages of conventional organic and inorganic ion exchangers. It has been industrialized by our company for the first time in the world.
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(1)Characteristics of IXE
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Superior heat resistance and can be used at high temperatures of 3100oC.
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A high ion selectivity; specific ions can be separated from co-existing ions.
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| Ion exchangers |
Tested solution |
Parameters |
Adsorption order |
| IXE-300 |
0.1N-HNO3 |
Kd
α |
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| Strong acid ion exchange resin with sulfonic acid groups |
0.2N-HNO3 |
Kd
α |
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Kd (distribution coefficient): Ion concentration in the ion exchanger/ion concentration in the solution (ml/g)
 (separation factor): Kd(A)/Kd(B)
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Effective even under conditions with very little moisture
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Superior resistance to organic chemicals and to melt resin at high temperatures
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High resistance to radiation and does not degrade in the presence of strong radiation.
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High resistance to oxidation and can be used under acidic atmosphere
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Ability to adsorb gas at high temperature
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(2)Major grades of IXE
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| Grades |
Types |
Forms |
Ingredients |
Total exchange capacity (meq/g) |
| IXE-100 |
Cation exchange |
Fine powder |
Zirconium system |
Na+ 6.6 |
| IXE-300 |
Cation exchange |
Fine powder |
Antimony system |
Na+ 4.0 |
| IXE-500 |
Anion exchange |
Fine powder |
Bismuth system |
Cl- 3.9 |
| IXE-530 |
Anion exchange |
Fine powder |
Bismuth system |
Cl- 3.7 |
| IXE-550 |
Anion exchange |
Fine powder |
Bismuth system |
Cl- 4.1 |
| IXE-600 |
Cation and anion exchange |
Fine powder |
Antimony and bismuth system |
Na+ 2.0
Cl- 2.0 |
| IXE-633 |
Cation and anion exchange |
Fine powder |
Antimony and bismuth system |
Na+ 1.3
Cl- 2.8 |
| IXE-700F |
Cation and anion exchange |
Fine powder |
Magnesium and aluminum system |
Cl- 4.5 |
| IXE-800 |
Cation and anion exchange |
Fine powder |
Zirconium system |
Cl- 1.0 |
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(3)Main applications of IXE
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Reliability of electrical and electronics parts are improved
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IXE can be added and mixed into IC encapsulating material, conductive paste, circuit board materials, and end seal materials of aluminum electrolytic capacitors. This helps trap ionic impurities and inhibits the corrosion of aluminum wiring and electrodes. As a result, improvement in moisture proofing properties can be anticipated. In addition, a preventive effect on migration of wiring materials can be anticipated.
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Improved durability of film performance
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IXE can be added and mixed into the water system, solvent system, and powdered paints. This helps trap ionic impurities, inhibits the detachment and swelling of coated film, and inhibits the degradation of base materials.
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Purification of resins and organic solvents
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Treatment with IXE removes ionic impurities from organic solvents, melt resins, and resin solution.
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Removal of toxic ions
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Toxic ions such as arsenous acid, fluoroboric acid, lead, and cadmium are adsorbed and removed from industrial and mine wastewater. Radioactive cesium and strontium are also adsorbed.
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(4)Examples of applications of IXE
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Traps halides ions in epoxy resin
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A fixed amount of IXE-600 was added to the epoxy resin composition, cured, and pulverized. Extraction tests were performed at 121oC and 2 atm.
- Cresol novolac epoxy resin: 58 parts
- Brominated phenol novolac epoxy resin: 8 parts
- Phenol novolac resin: 33 parts
- Triphenylphosphine: 1 part
- IXE-600: 0, 2, and 4 parts
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Inhibition of corrosion of aluminum wiring
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A fixed amount of IXE-633 was added to the epoxy resin composition, and aluminum wire board was coated. Unsaturated pressure cooker bias tests were performed.
- Bisphenol A expoxy resin: 86 parts
- Triethylenetetramine: 14 parts
- IXE-633: 2.5 parts
- Wire width20µm,wire interval20µm
- Test conditions 130ºC,85%RH,20V,20h
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