alkylketene dimmer AKD CAS NO.144245-85-2

Alkyl ketene dimer
Alkylketene dimer AKD is a reactive neutral paper sizing agent.
Chinese name: Alkyl ketene dimer
Foreign name alkylketene dimmer AKD
Also known as paper additive
Characterized as a waxy solid
Melting point 46 ℃
PH 3-4
Milky white or yellowish lotion
Solid content 10-15%
Easy to decompose in dispersed cold water
Relative density 1.010+0.005
AKD is an unsaturated lactone, which is a wax like solid insoluble in water with a melting point of around 51-52 ℃. AKD used as paper sizing agent must be made into lotion. The particle size of its product is about 0.5~2 μ m. The lotion is white and easy to hydrolyze, so its storage period is generally short, only 3~6 months. Due to the development of synthesis and emulsification technology, the solid content of AKD lotion can reach 40% or more, and its hydrolysis and migration tendency is greatly limited.
It is a reactive neutral paper sizing agent mainly used as an internal sizing agent for copper plate base paper, photocopy paper, archival paper, dictionary paper, and high-quality writing paper. The pH value of glue can reach around 8.0, so it can be called alkaline glue and is widely used domestically and internationally. This product can also be used for surface gluing.

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