Pat-Add AF 21
- CASE Ingredients Features
- Long Shelf Life
- Chemical Family
- Mineral Oils
PAT-ADD AF 21 is a defoamer for use in waterborne coatings like dispersion paints as well as in aqueous inks and pigment dispersions.PAT-ADD AF 21 is a mineral oil based compound, showing extremely strong interface activity.PAT-ADD AF 21 is very versatile in application and is efficient in various waterborne systems for defoaming and anti-foaming purposes during manufacturing and application.
Properties
- Physical Form
- Dispersion
Identification
- CASE Ingredients Functions
- Anti-Foaming AgentDefoamer
Product families
- Foam Control
Other characteristics
- Brand
- Pat-Add
- End Uses
- Top Coat, Waterborne Coating, Waterborne Ink
- Functions
- Anti-Foaming Agent, Defoamer
- Compatible Polymers & Resins
- Polyvinyl Chloride (PVC)
- Markets
- Building & Construction
- Paints & Coatings
- Use Levels
- 0.1-0.5%
- Appearance
- White to Pale yellow Dispersion
- Properties
PAT-ADD AF 21 is water-dispersible, but requires strong incorporation forces in order to be properly dispersed. PAT-ADD AF 21 is most suitable for use in high PVC-dispersion paints, flat paints and pigment dispersions.
- Application
Strong defoaming, easy incorporation, accurate dosage. Dispersion of hydrophobes in a mineral oil compound with polysiloxane.
- Coating Type
- Top Coat
- Waterborne Coating
- Technology
- CASE Ingredients
- Dispersible In
- Water
- Ink and Toner Type
- Waterborne Ink
- Addition and Dosage
The optimal amount of PAT-ADD AF 21 to be used is system related, but generally is between 0,1 and 0,5% PAT-ADD AF 21, calculated on the total weight of the foaming formulation. The product needs proper incorporation conditions; it is recommended to add part of the required dosage prior to pigment dispersion and the remaining half immediately after dispersion, straight to the mill-base or during let-down, using effective mixing. Improper mixing may result in insufficient defoaming action and may cause side effects such as effecting gloss or film appearance. The optimum concentration to be used depends on the individual requirements and conditions.
- Compatible Polymers and Resins
- Polyvinyl Chloride (PVC)
Technical data
Table 1 of 1
4 rows| Characteristic | Value | Unit |
|---|---|---|
| Viscosity at 25°C | approx. 4000 | cPs |
| Specific gravity at 25°C | approx. 0.935 | — |
| Polarity | Non-ionic | — |
| Active matter content | 100.0 | % |
