Enhanced TDS
Identification & Functionality
- Carrier
- Chemical Family
- Agrochemical Functions
- CASE Ingredients Functions
- Technologies
- Product Families
Features & Benefits
- CASE Ingredients Features
Applications & Uses
- Markets
- Applications
- Compatible Substrates & Surfaces
- Coating End Applications
- Applications
- Dispex® AA 4140 is an ideal dispersing agent for a wide range of water-based coatings.
- It is based on an organic polymer and provides improved storage stability of both pigment dispersion and formulated paint when compared with inorganic dispersing agents, e.g. polyphosphate products.
- There is little or no adverse reaction to high temperatures or pH changes. Dispex® AA 4140 is effective over a wide pH range of 5 - 12 and up to temperatures in excess of 100°C. Dispex® AA 4040 is the ammonia neutralized version of the same polymer.
- Incorporation
- Dispex® AA 4140 should be added under stirring before adding pigments or fillers to the grind. In general, the pH of the final preparation should be in the region of 8.5 to obtain optimum dispersing efficiency.
- The optimum amount of dispersing agent required to form a stable dispersion strongly depends on the pigment’s chemical nature, the particle surface and shape.
- The polymer base of the latex also plays a very important role. In general, underdosing of the dispersing agent will lead to insufficient stability of the pigment disperions. Likewise to other dispersing agents the formulator should apply 1.5 - 2.0 times the determined optimum level of dispersing agent to avoid storage problems.
Properties
- Physical Form
Packaging & Availability
- Country Availability
- Packaging Type
- Packaging Information
- 1250kg Composite - IBC (PE/Metal)
- 25kg PE-Jerrican
- 270KG Plastic tighthead drum
- Bulk
Storage & Handling
- Storage Information
Although Dispex® AA 4140 is freeze-thaw stable it should be stored at temperatures above 5°C to allow easy handling.