Liquid Alkyl Ketene Dimer/GT-LKD 02

Product Description:

This product is a liquid alkyl ketene dimer (AKD), produced through the same synthesis process as solid alkyl ketene dimer (AKD). The difference lies in the raw materials used: liquid AKD is derived from monomer acids, while solid AKD is made from stearic acid.

Usage Notes:

• Liquid AKD cannot be used independently; it must be blended with solid AKD.

  • For surface sizing, mix at a ratio of 30% liquid AKD to 70% solid AKD, using only 90% of the original total AKD quantity to achieve the same effect.

  • For internal sizing, mix at a ratio of 15% liquid AKD to 85% solid AKD, using only 93% of the original total AKD quantity to achieve the same effect.

Key Features:

• Performs better at higher paper machine speeds.

• Prevents sticking on thin paper grades.

• Fast curing time.

• Emulsification process is identical to that of solid AKD.

Structural Differences:

Unlike the straight-chain structure of solid AKD, this liquid AKD has a branched-chain structure. Globally, there are only two types of branched-chain liquid AKD: one from BASF and this product. All others are different.

Technical Specifications:

• Purity: ≥86%

• Iodine Value: ≥90

Liquid AKD Description

This type of liquid AKD is a composite made from various straight-chain fatty acids and branched-chain acids. After hydrogenation, it forms stearic acid, which is then acylated to produce the final product. At room temperature, it appears as a reddish-brown oily liquid with an iodine value ≥99 and an acid value of around 8.

As a new type of surface sizing agent, liquid AKD has been proven through long-term practice to deliver remarkable results, especially in high-quality paper pulps like cultural paper. It can reduce the use of solid AKD by approximately 20%. The effect is slightly less pronounced in corrugated and containerboard papers, where it can reduce solid AKD usage by about 10%.

Special Notes:

• The product is composed of multiple fatty acids with different crystallization points.

• Some precipitation may occur, but it consists of active components.

• It is essential to mix the entire drum thoroughly before use.