BASF Rheovis AS 1130 Thickener
product description
Thickening and Rheology Control Additives
Rheovis® AS 1130 is a derivative of a class of highly efficient rheology-controlling thickeners for a variety of waterborne coating systems.
chemical properties
Aqueous acrylic copolymer emulsion
It achieves the effect of controlling rheology by strong swelling of high molecular weight polymer in alkaline aqueous solution.
performance
|
Exterior |
white liquid (emulsion) |
|
store |
Relax® AS 1130 should be stored in a cool, dry place |
Basic performance (non-delivery specification)
|
solid content |
~ 30% |
|
Viscosity 25°C (77°F) |
~ 40 mPa·s |
|
Density 20°C (68°F) |
~ 1.05 g/cm3 |
|
pH |
~ 3.5 |
application
Reelox® AS 1130 is an ideal rheology control additive for waterborne coatings. Adding it to the paint can improve the thixotropic properties of the paint, so that the paint will not produce wire drawing in the process of spraying at different speeds. This product is especially suitable for airless spraying.
BASF also offers Rheovis® HS 1332, Rheovis® HS 1212 and Rheovis® HS 1152 rheology control additives with more Newtonian properties.
Relax® AS 1130 works best with a pH range of 7.5-10.5.
Because Reelox® AS 1130 is a chemically synthesized derivative, it is much less affected by microorganisms than cellulose derivatives. Therefore, the dosage of fungicides can be reduced in the formulation, and the application range is wider.
Rheology additives should be added in the last step of coating production, not during pigment milling, which avoids irreversible damage to the thixotropic properties of the coating system under high shear stress. Since Relux® AS 1130 is a liquid, post-addition is very convenient. At the same time, it is also beneficial to adjust the viscosity of each batch of coatings to meet the needs of different products.
Reelox® AS 1130 can be poured directly into the mixture under the conditions of efficient mixing equipment. During this process, the pH value is always below 7.5, and then alkaline substances, amines or other bases are added to adjust the pH value to ensure the thickening effect. The water resistance of the dry film can be improved if a volatile base such as ammonia is used as a neutralizing agent.
Recommended dosage
Experiment within the recommended dosage range to determine the best dosage for the desired effect.
1.0%~3.5% of the total formula
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