Alkyl ketene dimer (AKD)

Alkyl ketene dimer (AKD) is a chemical compound used primarily in papermaking as a sizing agent. This product is added to paper to reduce its absorbency, which improves the ink or toner receptivity of the paper surface. AKD is particularly effective as a sizing agent for paper and board made from recycled fibers.

The use of AKD as a sizing agent offers several advantages, including:

  1. Improved printability: AKD-treated paper exhibits better ink holdout and print quality due to reduced ink penetration and improved ink adhesion.
  2. Enhanced water resistance: AKD imparts water repellency to paper, making it resistant to moisture and humidity.
  3. Reduced environmental impact: AKD is biodegradable and does not pose significant environmental hazards when used in papermaking processes.

Product Characteristics

Appearance: White emulsion
Solid content: 20 ± 0.5%
PH: 3-5
Viscosity(25 °C): ≤ 50 mPa. s
Ionic Type: Cationic
Solubility: Easily soluble in water


Gum Rosin Emulsion

Dipfix double fortified rosin emulsion offer versatility and compatibility with a wide range of materials, making them valuable additives in various industrial processes where adhesion, binding, and coating properties are required. It is an excellent thickener, it is suitable for a wide range of hot melt material modifier, rubber, adhesives, pressure sensitive adhesive tape, hot melt coating, paint, advanced inks, packaging, anti-rust oil industry, water repellent for gypsum mix and paper sizing.

In paper making process gum rosin emulsions can be used as sizing agents or additives in papermaking processes to improve paper strength, surface properties, and printability.


  1. Excellent initial tack
  2. Cold resistance
  3. Low molecular weight, easy to emulsify
  4. Have good compatibility with SIS, SBS, EVA and natural rubber
  5. Radiation-resistant, anti-crystallization, oxygen, heat, light relatively stable, acid, alkali, and strong electric insulation
  6. Soluble in benzene, toluene, turpentine, gasoline, soluble in water, methanol and ethanol

Technical Specifications

Dark brown emulsion form is ready for direct addition after dilution
Solubility: Easily soluble in cold and mild hot water at 60°C
Solid Content: 50% <
PH value on paper machine: 8.5 to 10.5
Storage: Stored at ventilated, cool and dry place
Usage: 0.5% to 1% of the pulp weight