CRAYVALLAC® PA3 WDA 20

• Formulation:

Ready to use

Easy handling

Post addition

• Storage:

Antisettling

In-can appearance

Syneresis resistance

Viscosity stability

• Application:

Edge-coverage

Sag resistance

Sprayability

• Film Properties:

Gloss

Levelling

Transparency

• Safer Solutions:

APEO Free

Heavy Metal Free

• Total Bio content (%): 17
• Thickening Mechanism:

Non Associative

• Viscosity Contribution:

Low Shear contribution

Mid Shear contribution

• In order to obtain maximum efficiency from CRAYVALLAC® PA3 WDA 20, it is necessary to disperse this product without destroying the crystalline fibres.
• It is therefore preferable to incorporate CRAYVALLAC® PA3 WDA 20 under low to medium shear conditions over as short a time period as possible.
• There are two main methods by which CRAYVALLAC® PA3 WDA 20 can be incorporated:
• Post addition: Using a high-speed disperser, CRAYVALLAC® PA3 WDA 20 is added during the final stages of production, when the coating has been partially thinned to a viscosity of 600- 800mPas (ICI cone and plate at 10000s-1) and the peripheral speed reduced to approximately 4m.s-¹.
• Too high a speed will result in reduced performance, whereas, too low a speed will result in extended incorporation times.
• In general, the time required for incorporation should be kept to a minimum in order to minimize overshear.
• Master batch preparation:
• To be prepared by dispersing CRAYVALLAC® PA3 WDA 20 in a resin and/or solvent using low to medium shear rates.
• This dispersion can then be added to the finished coating.

• It should be stored in the original containers in a dry place at temperatures between 5°C (41°F) and 30°C (86°F).
• Avoid exposure to direct sunlight or frost.
• In these conditions, this product should be used within 24 months from production.