Amino Compound Purification/Separation TRIZ Cases
- Semiconductor-Grade Ethylenediamine Purification Below 50 ppm Water
A molecular sieve plus distillation route dries ethylenediamine below 50 ppm water and removes trace metals for semiconductor processing.
- High-Purity Ethylenediamine Purification for Semiconductor Processing
Molecular sieves, distillation, and dried containers cut water and trace metals in ethylenediamine for cleaner semiconductor processing.
- Trientine Tetrahydrochloride Crystallization for Stable Drug Storage
Controlled anti-solvent crystallization at 50-75°C produces stable trientine tetrahydrochloride crystals with low moisture uptake and simpler processing.
- Precious Metal-Iron Catalyst Reactivation Using Iron(III) Compounds
Adding an iron(III) compound restores spent precious metal-iron catalyst activity in situ, avoiding costly precious metal replacement.
- Glycolaldehyde Amination Route to High-Selectivity Ethyleneamines
A two-step amination and hydrogenation route suppresses glycolaldehyde dimer formation to improve ethyleneamine and ethanolamine yield and selectivity.
- Amine Chromatography with Crown Ether Phase for Low-Water Retention
A salt-containing low-water mobile phase boosts amine retention on crown ether stationary phases while reducing ghost peaks for LC-MS.
- Lipase Resolution of 2,6-Dimethyl-1-Indanamine for Scalable Enantiopurity
Lipase-catalyzed acylation, metal isomerization, and crystallization cut cost and time in producing enantiopure 2,6-dimethyl-1-indanamine.
- PMDETA Purification by By-Product Derivatization Before Distillation
Reactive C=O compounds convert close-boiling PMDETA by-products into separable derivatives, enabling distillation to reach ≥99% purity.
- Magnet Strainer Structure for Fast Catalyst Cleaning
A separated lid and magnetic adsorption unit makes catalyst removal faster, safer, and helps prevent strainer blockages in xylylenediamine production.
- Two-Stage MDA Hydrogenation for PACM Isomer Ratio Control
A two-stage fixed-bed and postreactor hydrogenation process controls PACM isomer ratios while managing exothermic heat and energy use.
- Continuous MDA Hydrogenation with Split Reactors for Isomer Control
Split isothermal and adiabatic hydrogenation stages reduce recirculation energy and by-products while controlling PACM isomer ratios.
- Methylenebis(Cyclohexylamine) Distillation Using a Dividing-Wall Column
A dividing-wall distillation step cuts heat exposure and residence time in methylenebis(cyclohexylamine) purification while avoiding crystallization.
- Continuous MDA Hydrogenation for Low Trans/Trans PACM
Staged fixed-bed hydrogenation with independent heat control keeps PACM trans/trans content low while improving turnover and reducing energy use.