Metal salts of maleimide compounds as conductivity promoters
A technology of maleimide and maleimide acid, which is applied to conductive materials, semiconductor devices, semiconductor/solid-state device components dispersed in non-conductive inorganic materials, etc., can solve the problem of affecting the rheological properties of the composition. And other issues
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Embodiment 1
[0019] Embodiment 1. Preparation of maleimide caproic acid (2.1MOL) / semi-pentahydrate copper nitrate (II) (1.0MOL)
[0020]
[0021] Raw material, maleimide caproic acid
Prepared by adding one molar equivalent of maleic anhydride in acetonitrile to one molar equivalent of 6-aminocaproic acid in acetic acid. The mixture was reacted at room temperature for three hours. The white crystals formed were filtered off, washed with cold acetonitrile and dried to give the amic acid adduct. The amic acid was mixed with triethylamine in toluene, and the mixture was heated to 130° C. for two hours. The water of reaction was collected in a Dean-Stark trap. The organic solvent was evaporated and enough 2M HCl was added to reach a pH of 2. Extracted with ethyl acetate, MgSO 4 Drying followed by evaporation of the solvent affords 6-maleimidocaproic acid (MCA).
[0022] MCA (76.83 g, 0.3641 mol) and 100 mL of water were combined in a 1 liter four necked round bottom flask equipp...
Embodiment 2
[0025] Embodiment 2. Preparation of maleimide propionic acid (2.1MOL) / semi-pentahydrate copper nitrate (II) (1.0MOL)
[0026]
[0027] Maleimide propionic acid (61.58 g, 0.3641 mol) and 100 mL of water were combined in a 1 liter four necked round bottom flask equipped with a mechanical stirrer, thermometer and pH probe. The reaction was heated to 60°C with stirring, resulting in a slightly cloudy golden solution. When the reaction solution was cooled to room temperature, a solution of copper(II) nitrate hemipentahydrate (Aldrich, 223395, 98%) (50.00 g, 0.2150 mol in 50 ml of water) was prepared.
[0028] Join NH 4 OH (28-30% assay), raising the pH to 2.31 to ~7.0. After joining NH 4 During the OH period, the reaction temperature rose to 44°C, and the reactant became quite transparent orange-red. The reaction was cooled to 25°C and the measured pH was 6.64. At this temperature, the reaction became cloudy and a pink solid precipitated out of solution. Add 50 mL of wat...
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