Molecular Formula | C32H60O2 |
Molar Mass | 476.8176 |
Appearance | Light yellow waxy solid |
Storage Condition | 贮存于阴凉、干燥处,避免日晒雨淋;贮存温度 为5~35℃,产品保质期6个月。 |
Physical and Chemical Properties | Neutral lotion. Calcium carbonate can be used as filler, with high one-way retention, good whiteness, opacity, hand strength, folding resistance, aging resistance and printing performance. |
Use | AKD neutral sizing agent can be directly used for pulp sizing in neutral papermaking in paper mills. It can endow paper with superior resistance to water and acid-base solution penetration, as well as the ability to resist edge penetration. It can greatly improve the physical properties of paper and is widely used for neutral sizing in the production of copperplate base paper, electrostatic copying paper, double adhesive paper, carbon free copy paper, archival paper, photographic base paper, water pine base paper, stamp base paper, catering paper, and other types of paper. |
Caution | Transport general chemicals to prevent high temperatures, sun exposure, and freezing. If there is a leak during transportation, rinse with water. |
1. Synthesis of AKD intermediate (stearoyl chloride)
Add a certain amount of cyclohexane to the reaction vessel, and then add stearic acid and PCI3 [n (C17H35 COOH): nPCl 3=1:2.18] under stirring. React at 60 ° C for 3.5 hours, let it stand and cool down, filter out the by-product H3PO3, steam out the solvent, and obtain a brown liquid called stearoyl chloride.
2. Synthesis of Hexadecyl Dimethylene Ketone (AKD)
Firstly, cyclohexane was added to the reactor, followed by the addition of stearoyl chloride and triethylamine [mass ratio=1.25] under stirring. The dechlorination reaction was carried out at 40 ℃ for 8 hours. Filter and remove byproduct N (C2H5) 3 · HCI, evaporate solvent, and obtain crude AKD product. Fine products obtained after recrystallization and products obtained after emulsification.