IR-823 Silicone Surface Additive with Slight Reduction of Surface
Composition:
| IR-823 | Aralkyl modified polymethyl alkyl siloxane |
Typical Properties:
| Acid value, mg KOH/g | Density at 20°C, g/ml | Non-volatile matter, % | Flashpoint, °C | |
| IR-823 | 129 | 0.99 | >96 | >100 |
Proposed Dosages:
| Dosage based upon inorganic pigments, % | |
| IR-823 | 0.05-0.6 |
Functions:
These additives slightly reduce the surface tension of paint systems, which thus improves flow and leveling and displays partial defoaming properties. Additionally, they prevent “Bénard Cell” formation.
Uses:
| Solvent-borne coatings | Aqueous coatings | |
| IR-823 | Recommended | – |
Addition Methods&Process Technology Instructions:
These additives can be added during any production process, including post-addition.
Special Features:
| IR-823 | – IR-823 defoaming effect (i.e., no or only slight foam stabilization) depends on the polarity of the paint system. It is heat resistant up to 250°C and does not decrease inter-coat adhesion when overcoated. – In inwood and furniture coatings, IR-823 is used to orient the flatting agent in flat topcoats and multi-coat systems. – IR-823 cannot increase shine even in polyurethane, acid curing, and unsaturated polyester coatings, then the optimal orientation of the flatting agent can be achieved. – Inflow coat systems, IR-823, provide a stable curtain. – IR-823 supports the orientation of flatting agents and aluminum flakes in industrial coatings in metallics paints. |
Packing:
Packed in iron drums of 25 kg or 200 kg net each. The validity period is 12 months in sealed containers.
