Alkyl Ketene Dimer (AKD) wax is not a one-size-fits-all product. Manufacturers often encounter different grades, such as AKD 1840, AKD 1865, and AKD 1895, each tailored for specific performance requirements in papermaking. NINGBO INNO PHARMCHEM CO.,LTD. clarifies the distinctions between these grades and their ideal applications, helping paper mills select the most suitable product for their needs.

The primary difference between these AKD grades typically lies in the composition of the fatty acids used in their synthesis, specifically the chain length and the degree of unsaturation. These variations influence the melting point, reactivity, and ultimately, the performance characteristics of the AKD wax. Generally, higher numbers (like 1865 or 1895) may indicate a higher proportion of longer-chain fatty acids or a more saturated composition, leading to higher melting points and potentially different sizing efficiencies.

AKD 1840 is often characterized by a slightly lower melting point and a broader spectrum of fatty acid chain lengths. It is a versatile grade widely used for general-purpose internal sizing of various paper types, including cultural paper, copy paper, and packaging paper. Its balanced properties make it a reliable choice for many standard papermaking applications.

AKD 1865 typically features a slightly higher melting point and a more defined fatty acid composition, often favoring C18 chain lengths. This grade can offer enhanced sizing performance, particularly for papers requiring superior water resistance and improved aging properties. It is well-suited for high-quality writing papers and certain types of specialty papers where durability is a key concern.

AKD 1895, representing a grade with potentially the highest melting point and a more specific fatty acid profile, is often chosen for demanding applications. This could include papers that undergo rigorous processing or require exceptional resistance to moisture and chemicals. Its precise formulation can lead to optimized performance in specialized paper grades, ensuring consistent quality and durability.

NINGBO INNO PHARMCHEM CO.,LTD. advises that the choice of AKD grade should be based on the specific paper product's end-use requirements, the papermaking process conditions, and the desired balance of properties. Consulting with NINGBO INNO PHARMCHEM CO.,LTD. can provide valuable guidance in selecting the optimal AKD grade to achieve the best results in your papermaking operations.