Incorporation and Processing Instructions. The additive can be incorporated in different ways. Either disperse GARAMITE directly in the millbase or add it. GARAMITE® is a unique rheological additive developed for a wide range of solvent born systems. Compared to fumed silica and organoclays. Rheology additive based on mixed mineral technology for solvent-borne unsaturated polyester, epoxy and vinyl ester resins that provides excellent.
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We have shown that Garamite fills this need in many cases as compared to conventional organoclays, polyamides and fumed silicas.
If needed to gain a little more efficiency, one can use polar activators in a manner similar to traditional organoclays.
Figure 11 evaluates the effectiveness of Garamite compared to organoclay in a PU system. Not only gafamite sag resistance increased, but runs are reduced or eliminated Figure 3.
The package viscosity tends to go higher and the sag and settling resistance trend lower, making it difficult for the end user to provide a uniform surface to protect the substrate. It is also more efficient and easier to handle in manufacturing less dusty, higher bulk density and not sensitive to shear. The information presented here was acquired by UL from the producer of the product or material or original information provider. Garamite Compared to Organoclay There are a variety of organoclays, but for the purpose of this article we will stick to the basics and compare and contrast activated versus self-activating organoclays.
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China Rheological Additive Counter to Garamite – China Organoclay, Rheological Additive
Properties such as sag resistance and settling resistance become more difficult to balance with package viscosity. MMT Advantages In practical terms we have found that Garamite tends to build less package viscosity while providing more sag resistance than organoclays. How to Use Garamite The use of Garamite is very similar to organoclays.
MMTs are compared to various thixotrope technologies used in different types of industrial coatings, including highsolids epoxies, low-HAPs systems, high-solids alkyds, chainstopped alkyds and zinc primers. As regulations call for gadamite VOC levels, it becomes increasingly difficult to design coatings with appropriate rheology.
In this case the polyamide had the highest viscosity but did not do well for the prevention of settling during heat aging Figure 9. While not completely necessary, this will consistently garamtie the most efficient results.
The morphology also plays a role in ease of incorporation. garamige
In unfilled systems, another shortcoming would be that the MMTs do not perform quite as well for sag resistance. The content of such third party sites is not within our control, and we cannot and will not take responsibility for the information or content.
As with the previous study, we compared the MMT to a polyamide, conventional and self-activating organoclays, and a blank. However, MMT networks use agramite spacing than do traditional organoclays, due to the different particle shapes involved. Industrial White Topcoat The next study looked at an industrial white topcoat.
GARAMITE® by Byk – Paint & Coatings
Always be mindful of the fact the actual rheology of the finished system may not match exactly. This page can be found at http: However, this property is not noticed in filled systems.
Unlike organoclays, Garamite is easily incorporated into the coating formulation without using a high level of quaternary amine. This is also the first time in this article we use a rheological enhancer, the BYK R Notice the phase separation of the modification made with organoclay. This website provides links to other websites owned by third parties. Conclusions As coating formulations move to lower VOCs and higher solids, the demand on the thixotrope becomes more difficult as it pertains to package viscosity, sag and settling resistance.
This can make the other thixotropes much more difficult to deal with in the long run. Placement can be important to both pot life and shelf life and should be tested. In part, we believe this has to do with the difference in having a combination of rods and plates and having more spacing, making it much more difficult for Mother Nature to put the clay back to its natural state.
This allows for lower package viscosity, lower cost gramite increased ease of manufacture. How MMTs Work 198 thicken systems similarly to the way in which organoclays work, using hydrogen bonding to form a three-dimensional network Figure 1. Zinc The next study intended to find the level of Garamite needed to suspend zinc through the use of high-solids pregels.
When working with epoxies do not be afraid to try various combinations between Part A garamits Part B. But for reactivity and storage stability it should be tested to see if the water in Garamite causes issues in these watersensitive formulations. Stability can be lost in different areas, whether it be sag resistance falling off or package viscosity rising substantially.
Mixed Mineral Thixotropes MMTs are a combination of two different morphologies; one being a plate, the other being a rod. The lowest levels, considered to be traditional organoclays, have to be activated with some type of polar activator.
Rheological Additive Counter to Garamite 1958
This system turned out to be a little more difficult than the previous system, as it took the higher 4 pounds per gallon level of Garamite to eliminate the settling. This morphology plays a role in not only the ease of incorporation, but also in the efficacy of sag resistance and settling resistance over heat aging.
We also found that the quaternary amine does not play as important a role in determining efficiency in a specific solvent system, like with traditional organoclays. This article explains how and why Garamite works.
When comparing MMTs to fumed silica, the big difference is in bulk densities.