RayKote 2020 Typical Physical Properties* * These properties are typical, but do not constitute specifications

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1 RayKote 2020 RayKote 2020 Technical Bulletin Styrene Acrylic Epoxy Hybrid Emulsion Polymer RayKote 2020 is a styrene acrylic epoxy hybrid polymer specifically designed for high performance, low VOC, industrial maintenance coatings. RayKote 2020 can be formulated into highly durable topcoats and high gloss direct-to-metal finishes. It provides excellent adhesion over variety of metal substrates. Due to its low coalescent demand, coatings formulated with RayKote 2020 can meet current stringent VOC regulations. Key Features Outstanding corrosion resistance Excellent adhesion High gloss finish Low coalescent demand, low VOC Good exterior durability RayKote 2020 Typical Physical Properties* Polymer type Styrene acrylic epoxy emulsion Weight solids 50% Viscosity (Brookfield Model RVT) 360 cps, #2/100 rpm ph 8.5 Tg (DSC) 17 C MFFT (ASTM D-2354) 11 C Particle size (Mean) 0.11 micron Surfactant charge Anionic Weight per gallon 8.7 lbs/gal Freeze thaw stability Do Not Freeze * These properties are typical, but do not constitute specifications For more than 45 years, Specialty Polymers has been developing state of the art resins for the paint, coatings and adhesive industries. With more than 300 products to choose from, Specialty Polymers has the right polymer to meet your needs. Ver 2.0 GM 2/5/18 1

2 Benefits of RayKote 2020 Comparative Testing RayKote 2020 is designed to give a good balance of corrosion resistance, adhesion and exterior durability. It can be formulated with low levels of coalescent for Direct to Metal coatings which are under 100 gm/liter VOC. Picture 1. Dry and wet adhesion to different metal substrates. RayKote 2020 (left hand side of each panel) has better wet adhesion than the competitive polymers. Ver 2.0 GM 2/5/18 2

3 Comparative Testing Picture 2. ASTM B117 Salt Fog Resistance, mils DFT on CRS Ver 2.0 GM 2/5/18 3

4 Suggested Formulation RayKote 2020 Gloss White DTM Topcoat Brushing Enamel Suggested formulation GM Raw Materials Weight (lbs) Volume (gal) Water Ammonium Benzoate Sodium Nitrate (40%) Ammonia (28%)* Tamol Surfynol 104DPM Byk TiPure R706** Water*** RayKote Water DPnB**** Tafigel PUR Butyl Carbitol Total 1, * Mix until Ammonium Benzoate is dissolved ** Add as needed for good dispersion *** Cowles grind for 20 minutes **** Adjust viscosity to 80 KU with premix Typical Physical Properties Weight per gallon, lbs/gal VOC, lbs/gal 0.78 Weight solids, % PVC % Volume solids, % Coalescent, % VOC, g/l Initial viscosity (75 85) 80 ph ( ) degree gloss 78 Ver 2.0 GM 2/5/18 4

5 Performance Properties of Gloss White DTM Topcoat Brushing Enamel Property RayKote 2020 Volume Solids PVC VOC (gm/l) 95 Gloss 20 Deg Gloss Deg Gloss 79 Scrub Conditions Scrub Cycles to First Break 915 / 1104 Scrub Cycles to Cut Through 1172 / 1340 Scrub First Break % of Control Ctrl Scrub Cut Through % of Control Ctrl Chemical Resistance: 2 Week Dry, 1 Hour Spot Gasoline (Rated Best) 4 (Sl. Softer) MEK (Rated Best) 4 (Sl. Softer) 2% NaOH (Rated Best) 5 (Exc.) Adh to Matte CRS 1 Week Dry, 1 Hour Soak Adh to CRS Wet Knife Peel (1-5, 5 Best) 4 Adh to CRS Wet X Hatch % Removed 0 Adh to Untreated Al 1 Week Dry, 1 Hour Soak Adh to Al Wet Knife Peel (1-5, 5 Best) 3 Adh to Al Wet X Hatch % Removed 10 Adh Galvanized Steel 1 Week Dry, 1 Hour Soak Adh Wet Knife Peel (1-5, 5 Best) 4 Adh Wet X Hatch % Removed 0 Adh to Polished CRS 1 Week Dry, 1 Hour Soak Adh Wet Knife Peel (1-5, 5 Best) 0 Adh Wet X Hatch % Removed 40 QUV 300 Hours QUV 60 Deg gloss 75 % 60 Degree Gloss Loss 300 Hrs -4 Salt Fog ASTM B117, Matte CRS, 96 Hrs Undercut at Scribe, mm from scribe 5/5 Blistering (Size: 1-10, 10 Best) 8F/8F Ver 2.0 GM 2/5/18 5

6 Formulation Guidelines Coalescent: Hydrophobic coalescents such as Dowanol DPnB and Texanol work well with the RayKote A coalescent level of 10% on binder solids is recommended for best coalescence at low temperatures. For more rapid hardness development, part of the hydrophobic coalescent can be replaced by Butyl Carbitol, however the total coalescent level may need to be raised since the hydrophilic coalescents are less efficient at reducing the film formation temperature. Lower VOC formulations can be achieved by replacing part of the coalescent with a plasticizer like Optifilm 400. Dispersant: Hydrophobic dispersants such as Tamol 165A or Tamol 2002 give good gloss, corrosion resistance and stability with RayKote Other dispersants should be carefully evaluated for their effect on corrosion resistance. Rheology Modifiers: HEUR rheology modifiers like Acrysol SCT-275 or a combination of the Munsing Tafigel PUR40 and Acrysol RM-12W work well with the RayKote 2020 and to give good sag resistance in spray applications. For bushed or rolled applications, rheology modifiers such as the Tafigel PUR80 can be used in combination with the Tafigel PUR40 to build the high shear for higher brush applied film thicknesses. Using HEC thickeners can give lower gloss and corrosion resistance and these thickeners are not recommended with RayKote Defoamers: Dispersible silicone defoamers like Tego Foamex 1488 or Byk 024 give good defoaming and high gloss in paints made with RayKote Some mineral oil defoamers can give lower gloss with RayKote 2020 and are not recommended. Anticorrosive Pigments: Performance with anticorrosive pigments is under evaluation. Many anticorrosive pigments can give lower gloss and formulations containing anticorrosive pigments should be evaluated carefully for their effect on gloss and heat age stability. IMPORTANT INFORMATION If any product is defective in workmanship or materials, Specialty Polymers, Inc. will replace the product. The information contained in this Technical Bulletin is intended to be a guideline. It is offered in good faith, but without guarantee. We recommend users of the product perform their own testing to determine the suitability of the product in their application. Ver 2.0 GM 2/5/18 6