It can be that there is no means of getting rid of the foam because you are applying 2 mm dry film which is very high. The last option with our additives is that you might try instead of BYK®-054 0,8 BYK®-392 + 0,5 BYK®-354 + 0,3-0,5 BYK®-066 N + 1-3 BYKETOL®-OK. You can do some variations in the dosage. If you then still don't obtain good results, you should apply several layers and not only one for such high film thicknesses.

We recommend doing trials with BYK®-9076 and BYK®-9077 between 30-40% delivery form on carbon black.
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In your system you can try BYK®-331 and BYK®-333 to increase the mar resistance. The other possibility I see would be the use of a wax-based additive such as CERAFLOUR® 996, CERAFLOUR® 991, CERACOL® 600, CERACOL® 601. Or a combination of a silicone-based additive with a wax-based additive. Technical Service Support

Garamite is used as a thickener in unsaturated polyester. We have tested several types in our labs. Because Garamite is clay-based, we found a pseudoplastic flow which results in poor air release. In our trials we used 10% of BYK®-R 605 calculated on clay to get more thixotropic behavior, and as defoamer we used BYK®-A 555. Alternatively, you should test silica such as Aerosil in combination with 20% BYK®-R 605 calculated on silica. I would start with a quantity of 3-5% of the clay and 0.3-0.5% of silica.
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We have several additives which will help in solid surface applications. 1) Air release: For best air release I recommend using 0.5% BYK®-A 555 (based on resin). Add the air release additive as soon as possible to prevent the formation of stable air in every following production step. 2) Viscosity and flow: To reduce viscosity and to improve the flow (or increase the amount of filler) you could use 1% BYK®-W 909 (based on resin). This additive should be incorporated before the filler is used. 3) Anti-sedimentation: Sometimes you will have sedimentation of colored flakes in your system. In this case we recommend using 0.5-1.0% BYK®-W 940 (based on filler). You should also use this additive before the filler is incorporated. This additive will prevent the sedimentation of the flakes but could also increase the viscosity a bit. We do not recommend combining 2) and 3)! 4) Leveling: To improve the leveling and the surface facing the air, I recommend you use 0.3% BYK®-330 (based on resin). If you have further questions, do not hesitate to ask. To contact our agent in India, please refer to www.byk.com/agents.
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Bentone gel is made by using an organically modified hectorit or organically modified bentonit which are in powder form. Suppliers are, for example, Elementis and Süd Chemie. The trade name of the Elementis product is Bentone, the trade name of Süd Chemie is Tixogel. These additives are used to increase viscosity and to reduce sagging. A gel is made as follows: Put 85 g of xylene in a container, put it under dissolver, add 10 g of bentonit under stirring, disperse for 5 min., add 5 g of ANTI-TERRA®-204, disperse for 5 min. Apply the gel on glass and check before it is dry if the gel is clear without seeds. Then it is ready to use. In the paint normally 2-3% of such a gel is used. There are many different ways to formulate such a gel. Another solvent is water. There are other additives which work as an activator as well.
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In general, BYK®-410 and BYK®-411 can be used in polyester resins. The limit is the curing. As soon as you cure with cobalt, you cannot use it because it will complex the cobalt. Depending on the application method, the structure build-up may be too slow. This has to be tested. I hope this answers your question. If you need further information, do not hesitate to contact us.
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You already did a good search on our website. BYK®-A 515 would be a good product, but I recommend you use a product with the name BYK®-A 560 which is an improved version of the BYK®-A 515. BYK®-A 560 will dramatically improve the wetting of the glass fiber and reduce air entrapments and porosity, and it will reduce the injection time of your RTM process! I would recommend that you use 0.5% BYK®-A 560 based on resin. BYK®-W 985 is for filled systems only and will not help you in your system. I hope this answer will help you.
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BYK®-R 605 is used as a thixotropy boosting additive in unsaturated polyester, epoxy and vinylester formulations with fumed silica or organically modified clays. BYK®-R 605 increases hydrogen bonding when combined with hydrophilic fumed silica or organically modified clays. It is possible to increase the thixotopy of the system so that a lower amount of fumed silica or clay can be used. This results in good anti-sagging properties with improved flow and deaeration. In vinylester resins, BYK®-R 605 activates hydrophilic fumed silica. Low dosages of BYK®-R 605 (5% based on fumed silica) will stabilize fumed silica in laminating resins and help prevent separation during resin storage. To achieve the best performance of BYK®-R 605, it should be added to the UP resin under stirring prior to the dispersion of fumed silica. Of course, post addition is also possible, but the effect on thixotropy and viscosity might be slightly reduced.
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The following additives are used in button application. Cast process: Usually air release additives are used. BYK®-A 555 is the most powerful product here. If haze is a problem, BYK®-A 550 is the one which should be tested. Centrifugation process: Here, BYK®-S 706 is used to improve orientation of perl pigments. To improve gloss and reduce yellowing, no additives are helpful. Technical Service Support

For your purpose I would propose the use of our wetting and dispersing additive BYK®-W 980. BYK®-W 980 is a solution of a salt of unsaturated polyamine amides and acidic polyester and it improves the dispersion of a wide range of the most common fillers in UP resins. It reduces the viscosity, so that a higher filler loading is possible, and it helps to prevent sedimentation. All the necessary technical data can be found in our Additive Guide on our website www.byk.com.

For this application I recommend the following additives: BYK®-330, BYK®-A 525, BYK®-306.