1. Introduce

AKD neutral sizing agent is an alkyl ketene dimer ( abbreviated AKD), a cationic surface active agent as raw materials, homogenizing the emulsion formed white emulsion , a suitable alkaline (pH value 7.5 ~ 8.5 ) under the conditions of reaction papermaking sizing agent . Widely used in various high-grade cultural paper , photographic paper, fruit bag paper, packaging paper and paperboard production of adhesive tapes and other facilities.

2. The sizing mechanism

AKD emulsion particles by means of a cationic starch, polyacrylamide units or dual retention system keep the fiber surface , the press and the initial drying phase , AKD particles melted and spread uniformly on the fiber surface and the re- distribution , the formation of highly oriented monomolecular layer, drying and storage phases with hydroxyl groups on the fiber molecule esterification reaction and firmly bonded to the fibers , hydrophobic long-chain aliphatic group steering paper , so as to achieve excellent water results.

3. The product features
1) Significantly improved paper strength , toughness , whiteness and opacity. Improve the printability of paper .
2) Paper gives good optical properties and chemical stability , the paper long shelf life, easy to turn yellow .
3) High tolerance for calcium carbonate filler ( 10 ~ 30% ) , saving fiber raw materials , reduce slurry consumption .
4) Without aluminum sulphate , white water soluble solids greatly reduced, Whitewater lockable cycle , reduce environmental pollution , water conservation .
5) As the alkaline papermaking conditions , the device can be reduced corrosion, extend the mesh fabric , felt life.

6) Small bubbles , no dirt, clean the wet end system to improve runnability. 

4. Technical Indicators
1) Appearance : white emulsion
2) Solid content : 10 ± 0.5%, 12 ± 0.5%, 15 ± 0.5%, 19 ± 1%
3) pH value: 3-4
4) Ionic: Cation
5) Density : 1.01
6) Dispersion: cold water dispersible

7) Stability: 90 days (25 ℃)