Making it Greener With Myrifilm® Zero-VOC Coalescing Solvent
ZeroVOC VOC Zero low odor high efficiency
Myrifilm® Zero-VOC Coalescing Solvent:
Bringing Formulation Flexibility and Reduced Cost to Compliant Coatings
Formulators of compliant coatings using Myrifilm as their coalescing solvent may be able to reduce formulation costs. Myrifilm is a bio-based, ultra low odor coalescing agent, whose high efficiency enables lower use levels than traditional coalescing agents in some formulations. Because it is zero-VOC, Myrifilm allows the formulation flexibility needed to meet the most stringent environmental compliance regulations while maintaining desired coating performance. Myrifilm can be used in a wide variety of resins and works particularly well in higher Tg resins, resulting in superior coating performance. COALESCING SOLVENT TECHNOLOGY - HIGH PERFORMANCE COMPLIANT COATINGS WITHOUT HIGHER COST Coatings formulators must always balance the competing demands of performance, cost and compliance. As regional VOC regulations have become increasingly stringent, coatings manufacturers have been forced to make changes to their formulations to reduce the level of VOC. Resin suppliers have approached this problem by developing lower Tg resins, with reduced VOC. These multi-phase resins offer compliant performance, but tend to increase formulation cost. Myriant’s coalescing solvent is zero-VOC and highly efficient, using less with comparable performance especially when used in higher Tg resin formulations. Choosing Myrifilm as the coalescing solvent allows the formulator to work with more traditional, lower cost resins. The benefit? Better finished paint performance in coatings that will form films utilizing higher Tg resins.
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Myrifilm® Zero-VOC Coalescing Solvent:
Bringing Formulation Flexibility and Reduced Cost to Compliant Coatings Coalescing Solvent Technology Coalescing solvents are a key functional component of waterborne coating systems. In a typical waterborne paint, polymer particles are dispersed in water along with pigment particles and a number of other functional additives. As the paint is applied to a surface, the water begins to evaporate and the particles begin to approach each other. The polymer particles, assisted by the coalescing solvent, begin to flow together to create a coherent polymer film. This film, which adheres to the surface and holds the pigment particles in place, has properties that are critical to the performance of the final paint. The coalescing solvent must not adversely affect the properties of the finished paint by softening the film or having a residual unpleasant odor.
Paint and pigment particles dispersed in water
Paint applied to surface
The particles come into contact and begin to flow together with the help of the coalescing solvent...
...to make a dry film - a hard tough polymer layer holding pigments in place.
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Myrifilm® vs. Conventional Coalescing Solvents Identical Performance with Low Odor and Zero-VOC
Performance Compared to Conventional Coalescing Solvents Myrifilm was evaluated in a typical formulation using Dow Rhoplex SG-30 semi-gloss all acrylic resin. The properties of both the paint and the finished film were evaluated. The control coalescing solvents used were Texanol™ (Eastman), TXIB (Eastman), Optifilm 400™ (Eastman) and dipropylene glycol monobutyl ether (DPnB) (Dow). Semi-Gloss Formulation Function
Raw Material Water TiO2 Slurry Propylene Glycol KATHON™ LX 1.5% Rhoplex™ SG-30 Myrifilm®/Texanol™ Aerosol® OT-75 BYK®-022
Pigment Solvent Microbicide Acrylic Resin Coalescing Solvent Wetting Agent Defoamer
Weight (lb.) 79.3 325.5 34.6 1.8 501.4 12.5 1.5 2.1
Ammonia (28%)
pH Control
1.0
Acrysol™ SCT-275 Acrysol™ RM-2020NPR Water
Rheology Modifier HEUR Rheology Modifier
16.2 17.3 56.3 1049.5
Total
Property KU Viscosity (Initial/24 h) Sag Leveling Contrast Ratio (Air-dry, 24h) Gloss 20°/60°/85° Block Resistance (120 °F, 24 h) Scrub Resistance (2,400 cycles) Low Temperature Coalescing (40 °F, 10 mil) Tint Strength (Red) %TSUC Tint Strength (Yellow) %TSUC Tint Strength (Blue) %TSUC
Physical Properties Typical Total VOC g/L Density, lb/gal Vol % Solids PVC
Property Comparison of Typical Coalescing Solvents Semi-Gloss Semi-Gloss Semi-Gloss Semi-Gloss Acrylic with Acrylic with Acrylic with Acrylic with Myrifilm® TexanolTM TXIB Optifilm 400 87.9/104.2 90.7/107.8 99.3/115.7 94.7/112.3 10.7 10 11.3 10.7 4 4 4 4
150 10.49 33.97 21.95
Semi-Gloss Acrylic with DPnB 83.8/95.4 7.3 3.8
96.24
96.25
96.43
96.98
96.4
44.4/74.4/97.9
39.8/75.3/97.8
39.8/75.1/97.6
45.5/78.0/98.2
37.4/73.3/96.2
5
6
5.33
5.67
6
8
8
9
9
8
5
5
5
5
5
103.3 83.5 101.4
99.8 99.4 100
104.3 80.1 105.8
100.8 74.3 99.7
97.1 90.1 80.5
These results show that Myrifilm has performance characteristics comparable to traditional coalescing solvents. Myrifilm gives similar final gloss and contrast ratio, along with good block and scrub resistance. Page 3
Myrifilm® vs. TexanolTM
Identical Performance with Low Odor and Zero-VOC Myrifilm is an Efficient Coalescing Solvent To compare the coalescing solvents, Myrifilm and Texanol were added to separate laboratory semi-gloss formulation samples. Myrifilm’s efficiency was highlighted in producing identical film properties at half the concentration of Texanol with very low odor and zero-VOC.
Semi-Gloss Formulation Raw Material Weight (lb.) Grind Water 29.000 TM Tamol 731A 8.000 DeIonic LF 80MOD 2.000 ® DEE FO 3010A 0.500 ® Tafigel PUR 80 17.000 ® Minex 10 50.000 ® Attagel 50 3.000 Disperse 30 minutes to a 6-7 grind Water 81.000 Letdown TiO2 Slurry
280.000
Water Tafigel® PUR 80 RopaqueTM Ultra Orgal P850RR Myrifilm®/TexanolTM DEE FO® 3010A Tafigel® PUR 61 Total
80.000 12.000 60.000 410.000 10.000/20.000 1.500 10.000 1054.0/1064.0
Physical Properties Total VOC g/L 4 Density, lb/gal 10.54 Vol % Solids 36.84 Wt% Solids 48.79 PVC 34.09
Normalized ContrastRatio Normalized Normalizedcontrast contrastratio ratio 1212 1010 88
Blocking Blocking
66 4 2 0
Leveling Leveling
Normalized 60°60° Gloss Normalized Gloss 60° Gloss 60° Gloss
4 2 0
Normalized 85° Gloss Normalized 85° Gloss 85° Gloss 85° Gloss
Sag Sag Loading Myrifilm 50% loading Texanol Standard Dosage Loading Myrifilm 50% loading Texanol Standard Dosage
Dosage KU Viscosity Contrast Ratio 60 ° Gloss 85 ° Gloss Sag Leveling Blocking
Myrifilm® TexanolTM 1.2 wt% relative to resin 2.4 wt% relative to resin 124.2 123 97 97 23 21.6 62.9 60.4 12 11.7 5 5 2 2
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Myrifilm’s Performance in a Wide Range of Resins For Waterborne Coatings and Adhesives Performance in Other Resins In order to evaluate Myrifilm’s performance in other resin systems, the same semi-gloss formulation was used. The resin was replaced as indicated in the following table, and low temperature (5 °C) film-forming characteristics were evaluated. These results show that Myrifilm is an effective coalescent in a broad range of typical resins used for both coatings and adhesives.
Rhoplex SG-30 (Acrylic) with Myrifilm® Rhoplex SG-30 (Acrylic) with TexanolTM Styrofan ND 593 (Styrene/Butadiene) with Myrifilm® Styrofan ND 593 (Styrene/Butadiene) with TexanolTM Acronal S504 (Acrylic) with Myrifilm® Acronal S504 (Acrylic) with TexanolTM Acronal 296D (Styrene/Acrylic) with Myrifilm® Acronal 296D (Styrene/Acrylic) with TexanolTM
Low Temperature Coalescing Low Temperature Coalescing (10 mil/250 Micron Film) (5 mil/125 Micron Film) 4 3 3 1 5 4 5 5 5 5 5 5 5 5 5 5
Summary Myrifilm is a bio-based, ultra low odor, broad spectrum coalescing solvent. Because Myrifilm is zero-VOC, based on ASTM D6886 testing, it allows the formulation flexibility needed to meet increasingly stringent environmental compliance regulations. Myrifilm can be used in a wide variety of resins and works particularly well in higher Tg resins, resulting in superior coating performance. Myrifilm is a highly efficient coalescing agent, enabling lower use levels in some formulations, which can reduce overall formulation cost.
CO2
LOWER CARBON FOOTPRINT
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NO GREEN PRICE PREMIUM
NON-FOOD BASED
HIGH PERFORMANCE
Myrifilm® Zero-VOC Coalescing Solvent For Waterborne Coatings and Adhesives
Myrifilm is a bio-based, ultra low odor, broad spectrum coalescing solvent. This high-efficiency coalescing solvent is zero-VOC, low odor and non-HAPS (Hazardous Air Pollutants) and can be used in a wide range of waterborne coating formulations. Applications Myrifilm can replace conventional coalescing solvents in a wide variety of waterborne coating systems, especially acrylic, styrene-acrylic and ethylene-vinyl acetate copolymers. Because it is zero-VOC, Myrifilm allows the formulation flexibility that is needed to meet increasingly stringent environmental compliance regulations, without compromising performance. Coatings formulated with Myrifilm display good hardness, tint strength and scrub resistance, without the need for substantial reformulation. As with any product, the performance of Myrifilm must be verified by the end user. Product Specifications Purity Moisture Color Acid Number Visual
Value 99.5 wt% < 500 ppm < 10 Pt-Co 0.01 mg KOH/g Clear and free of suspended matter
Safety and Regulatory Myrifilm is listed on the U.S. TSCA inventory, the Canadian DSL, the Korean ECL, the Australian AICS and is registered under REACH. When using this product, the information and advice given in the Material Safety Data Sheet should be observed. Normal precautions for the handling of chemicals, including wearing proper personal protective equipment, should be followed at all times. The Material Safety Data Sheet is available on request.
Handling and Storage Store in a tightly closed container in a cool, well-ventilated area away from sources of heat or ignition.
Packaging
Samples are available in 1-liter or 1-gallon bottles. Product is available in steel drums, totes or in bulk.
SAMPLES AVAILABLE! Order today by calling + 1 855.MYRIANT or visiting www.myriant.com. Page 6
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