TECHNICAL INFORMATION62.090-E5 (replaces 62.090-E4) Page 1 of 11 November 2004 AQUAFLOW® hydrophobically modified polyacetal polyether Liquid associative rheology modifiers for waterborne industrial coatings AQUAFLOW hydrophobically modified polyacetal polyether rheology modifiers for waterborne industrial 1K and 2K paints based on acrylic, modified acrylic or styrene-acrylic latexes, epoxyester emulsions, urethaneacrylic dispersions, alkyd emulsions, epoxies and acrylic/polyisocyanates. In general, AQUAFLOW NLS-200 and NLS-210 are used to control the low shear viscosity, while AQUAFLOW NHS-300 optimizes the high shear viscosity of any paint formulation. AQUAFLOW hydrophobically modified polyacetal polyethers are liquid materials and, due to the fact that the products are low in viscosity, they can be added easily during the paint manufacturing process. The products are designed for spray-applied coatings to yield superior flow in combination with good film build and wet edge coverage while providing the coating with maximum film gloss, water resistance and corrosion resistance. Due to their chemical similarities, maximum blend compatibility is obtained when the two thickeners are used together. However, with appropriate formulating, they may also be used in conjunction with other associative and conventional thickeners. Alkyd-like flow can be generated with these materials in waterborne coating systems based on the above-mentioned binder systems. Compared to urethane-based associative thickeners (HEUR’S) AQUAFLOW hydrophobically modified polyacetal polyethers (HM-PAPE) demonstrate improved compatibility with colourants and electrolytes, while they remain stable during storage in the wide pH-range 2 – 12. The products have demonstrated reduced viscosity-loss on tinting compared to existing HEUR’s, while with AQUAFLOW NHS-300 a higher ICI viscosity can be generated compared to materials currently available in the market place. FORMULATING BENEFITS • Excellent flow and levelling • Full film build development (brush, roller application) • Controlled thickening response • Excellent sprayability (air, airless, HVLP) • Improved blocking resistance vs HEURs • Good corrosion resistance • Good colour acceptance and colour development • Easy to incorporate • Less critical to dosing compared to HEURs • • • • • • • • Full gloss development Tolerance to salts, electrolytes Excellent water resistance Excellent stain resistance Stability at wide pH-range Bio-stable Cost efficient performance Easy optimization of rheology TYPICAL PROPERTIES AQUAFLOW NLS-200 Composition Appearance Solids, weight % AQUAFLOW NLS-210 AQUAFLOW NHS-300 Å Å Æ Æ Viscosity * hydrophobically modified polyacetal polyether white - opaque liquid 25 25 80/20 water/diethylene 75/25 water/diethylene glycol monobutyl ether glycol monobutyl ether 2500 – 5500 mPa.s 2000 – 5000 mPa.s 4500 – 8000 mPa.s Specific gravity 1,05 g/cc 1,04 g/cc Carrier 1,05 g/cc 20 water 0 * Brookfield LVFviscosity meter at 25 C Hercules does not recommend any use of its products that would violate any patent or other rights. Aqualon, a Division of Hercules Incorporated Widnes/Uk, Rijswijk/NL, Düsseldorf/D, Le Pecq/F, Castelmaggiore (BO)/I, Tarragona/E, Warsaw/PL since the thickening mechanism is based on hydrophobic forces too. AQUAFLOW NLS-200 or NLS-210 and AQUAFLOW NHS-300 can be used as a single thickener or in combination. In very responsive latex systems AQUAFLOW NHS-300 can be used as single rheology modifier. The costs in use for the AQUAFLOWs is found to be significantly less than that of commercial HEURs.090-E5 Page 2 of 11 PRODUCT SAFETY Read and understand the Safety Data Sheets (SDS) before using these products.com. However. The products can be combined very well with materials like NATROSOL ® Plus 330 PA. Nl and Rohm and Haas. Note: Original paint formulations from Zeneca. modified acrylic or styrene-acrylic latexes. Furthermore AQUAFLOWs are stable in a wide pH-range. In Table 1 through Table 7 generic coating systems are exemplified together with their paint properties: For detailed information please contact our local sales representative. epoxyester emulsions. Compared to paints thickened with competitive urethane based non-ionic associative thickeners. The higher softening temperatures of AQUAFLOWs compared to those of existing HEURs contribute to improved blocking resistance. to optimize the balance between low shear (Brookfield/Stormer viscosity) and high shear (ICI viscosity). so flocculation of binder particles can in this way be avoided. whereas the viscosity retention for competitive HEURs is significantly less. agent or distributor or send an email to paint-eur@herc. 2K epoxies. Formulating with AQUAFLOW HM-PAPEs can be done in a similar way as with HEURs. On top AQUAFLOW HM-PAPEs demonstrate good compatibility with critically stabilized latexes. parquet lacquers etc. In these coating systems AQUAFLOW NHS-300 delivers higher ICI viscosity than high shear effective products currently available in the market. Figure 2 is attached and self-explaining.62. as a result of its designed molecular structure it is less critical in use as outlined above. AQUAFLOW NLS-200 thickened paints exhibit better colour development and lower viscosity loss on tinting. USA. urethane-acrylic dispersions and alkyd emulsions. 2K acrylic-polyicocyanates. GENERIC GUIDE FORMULATIONS In our coating studies we included primers and top coats for metal and wood substrates. FORMULATING GUIDELINES AND BENEFITS AQUAFLOW® HM-PAPEs non-urethane thickeners are designed to impart outstanding flow and levelling characteristics to acrylic. . To summarize the value positioning of the products. in attached chart (Figure 1) it is shown that the viscosity of a 4 wt% solution of AQUAFLOW NLS-200 is relatively stable over the entire pH-range after 21 days of storage at ambient temperature. 62.090-E5 Page 3 of 11 Figure 1 pH -stability of AQUAFLOW® versus HEURs Viscosity retention of 4 % solutions after 21 o days at 25 C V i s c o s i t y r e t e n t i o n % 100 90 80 70 60 50 40 30 20 10 0 12 11 10 9 8 7 6 5 4 3 2 pH of solution Low Shear effective HEUR AQUAFLOW NLS-200 . 090-E5 Page 4 of 11 Figure 2 Position of AQUAFLOWS vs HEURs • Easily incorporated • Compatible with critically stabilized latexes • Stable in pH range 2-12 • Improved tolerance to Performance electrolytes • Improved colour acceptance • Suitable for Spray.Roller-. Brush • Improved blocking resistance Aquaflows HEUR Lower cost in use Economic Advantage .62. 8 39.or brush application AQUAFLOW NHS-300 can be added to the required level of increased film build TABLE 1A Properties of the waterborne anti-corrosion paint PAINT PROPERTY Paint diluted to 40-65 sec. 5 = best Rating 1 – 10 .1 4. 10 = best Easy.0 Epoxyester solution 68.0 Dilute to correct viscosity (e. DIN 4).6 5..1 26. HVLP : 40-65 sec.7 26.5 0.8 61.62.6 Ammonia (25%) to pH~ 8.5 + water 48.7 18.090-E5 Page 5 of 11 TABLE 1 Waterborne anti-corrosion paint Binder: acrylic latex and epoxyester emulsion INGREDIENTS Water Amino propanol Dispersant Dispersant Corrosion inhibitor Butyl Glycol Defoamer TiO2 BaSO4 Talc Zinc phosphate Zinc oxide PARTS BY WEIGHT (Kg/1000 Kg) 58.g.5 0.5 Total 1000.3 Coalescent 9.5 AQUAFLOW® NLS-200 1.9 Modified acrylic latex (44%) 501. For roller.1 5.1 Defoamer 0. DIN 4 Sprayability Film appearance Film build Dry adhesion (ASTM D-3359) Wet adhesion (ASTM D-3359) Blistering resistance (D-714) 200 hours salt spray resistance (B 117) Syneresis Pigment sedimentation 1) 2) Rating 1 – 5 .8 Grind 30 minutes/6000 rpm Water 30.4 92. regular Very smooth 80 microns 200 microns (airless Good (rating 3) Good (rating 3) Excellent Excellent (rating 9) None None 1) 1) 2) . 0 Dispersant 3. HVLP : 30-40 sec.0 Butyl glycol 60.0 TiO2 181. For roller or brush application AQUAFLOW NHS-300 can be added to the required level of increased film build TABLE 2A Properties of the waterborne top coat Paint diluted to 30-40 sec. DIN 4 Sprayability Film appearance Film build Syneresis Pigment sedimentation PAINT PROPERTY Sprayed on anti-corrosion primer Easy. DIN 4).5 Defoamer 3.0 Modified acrylic latex (44 wt%) 15.g.1 Grind at 4000 rpm for 20 min.1 Stir for 10 minutes at low speed NaNO2 4.3 Dilute to correct viscosity (e.5 Stir for 15 minutes Total 1051.0 AQUAFLOW® NLS-200 6.1 Preservative 2.090-E5 Page 6 of 11 TABLE 2 Waterborne top coat Binder: modified acrylic latex INGREDIENTS PARTS BY WEIGHT (Kg/1000 Kg) Water 31. regular Very smooth 80-90 microns 200 microns (airless) Slight None .0 Water 26. Modified acrylic latex (44 wt%) 719.62. HVLP : 30-40 sec. 5 = best Easy.2 1006 Dispersion of paint components was done at high speed to avoid cratering.0 20 pH ~ 8.090-E5 Page 7 of 11 TABLE 3 Waterborne universal clear wood lacquer Binder: acrylic latexes INGREDIENTS Acrylic latex 1 Acrylic latex 2 Wax emulsion Preservative Diethyleneglycol monomethylether Defoamer Flatting agent AQUAFLOW® NLS-200 Defoamer Ammonia (25%) Total PARTS BY WEIGHT (Kg/1000 Kg) 720 80 50 10 100 10 10 6.g. regular Very smooth 80-90 microns 30% (flattened) Excellent (rating 5) Excellent Excellent Good Good Good resistance 1) .62. For roller or brush application AQUAFLOW NHS-300 can be added to the required level of increased film build TABLE 3A Properties of the waterborne universal clear wood lacquer PAINT PROPERTY Paint diluted to 30-40 sec. DIN 4 Sprayability Film appearance Film build Film gloss 600 Dry adhesion (ASTM D-3359) Water resistance (drop test) Stain resistance (coffee) Stain resistance (alcohol 48%) Stain resistance (ammonia 25%) Hot pan test Substrate used: mahogany wood 1) Rating 1 – 5 . DIN 4). Dilute to correct viscosity (e. DIN 4 : ~40 sec Levelling Film appearance Film hardness (König.62. s) Film gloss 600 Dry adhesion (ASTM D-3359) Water resistance (drop test) Stain resistance (coffee) Stain resistance (alcohol 48%) Stain resistance (ammonia 25%) Hot pan test Substrate used: mahogany wood 1) Rating 1 – 5 . 5 = best Excellent Very smooth ~150 s 95 % Excellent (rating 5) Excellent Good Good Good Good resistance 1) .and roller application INGREDIENTS Urethane-acrylic latex Ethyldiglycol Defoamer Preservative Wax emulsion Defoamer AQUAFLOW® NHS-300 Water Wetting agent Total PARTS BY WEIGHT (Kg/1000 Kg) 890 40 4 10 50 08 19 26 5 1052 AQUAFLOW NLS-200 or NLS-210 can be used in combination with AQUAFLOW NHS-300 to attain a desired balance of low and high shear viscosity TABLE 4A Properties of the waterborne parquet lacquer PAINT PROPERTY Paint viscosity : 55-60 KU.090-E5 Page 8 of 11 TABLE 4 Waterborne parquet lacquer Binder: urethan-acrylic latex for brush. 3 1012. regular Very smooth 80 microns Excellent (rating 5) Good (rating 3) Excellent 1) 1) .4 44.0 Dilute to correct viscosity (e. HVLP : 30-40 sec.6 144. DIN 4).62.or brush application AQUAFLOW NHS-300 can be added to the required level of increased film build TABLE 5A Properties of the waterborne two-component anti-corrosion primer PAINT PROPERTY Paint diluted to 30-40 sec. For roller.7 16.1 135. 5 = best Easy.3 4.8 163.8 3.g.0 Disperse Corrosion inhibitor AQUAFLOW® NLS-200 Water 5.2 Component 2 Hardener in coalescing solvent Total 99.5 1.090-E5 Page 9 of 11 TABLE 5 Waterborne two component anti-corrosion primer Binder: acrylic polyol latex INGREDIENTS PARTS BY WEIGHT (Kg/1000 Kg) Component 1 Acrylic polyol latex (45%) Defoamer/Stabilizer Defoamer Red oxide pigment Talc Sr/Al – polyphosphate SiO2 Water 322.4 71. DIN 4 Sprayability Film appearance Film build Dry adhesion (ASTM D-3359) Wet adhesion (ASTM D-3359) Blistering resistance (D-714) 1) Rating 1 – 5 . 0 Defoamer 4.3 AQUAFLOW® NLS-200 1.62. DIN 4 Sprayability Film appearance Film build Dry adhesion (ASTM D-3359) 1) Rating 1 – 5 .6 Disperse Acrylic polyol latex (45%) 57.9 Component 2 Hardener in coalescing solvent 177.or brush application AQUAFLOW NHS-300 can be added to the required level of increased film build TABLE 6A Properties of the waterborne two-component top coat formula PAINT PROPERTY Paint diluted to 30-40 sec.g.0 Dispersant 3. HVLP : 30-40 sec.5 Dilute to correct viscosity (e.090-E5 Page 10 of 11 TABLE 6 Waterborne two-component top coat Binder: acrylic polyol latex INGREDIENTS PARTS BY WEIGHT (Kg/1000 Kg) Component 1 Acrylic polyol latex (45%) 406. regular Very smooth 100 microns Good (rating 3) 1) .0 Co-solvent 9.5 Total 965.1 Emulsifier 16.0 TiO2 262. 5 = best Easy.1 Water 9. For roller. DIN 4).0 Water 19. 9 Thinner 21.5 Substrate additive 3.4 CaCO3 76. For roller. 5 = best Easy.0 Talc 78.g.6 Red oxide pigment 68.9 Disperse Defoamer 2. DIN 4).6 Sr/Al – polyphosphate 78. HVLP : 30-40 sec.4 Water 41.3 Total 1000.3 Dispersant 9.62. DIN 4 Sprayability Film appearance Film build Dry adhesion (ASTM D-3359) Wet adhesion (ASTM D-3359) Blistering resistance (D-714) Pot life 1) Rating 1 – 5 .1 AQUAFLOW® NLS-200 11. regular Very smooth 100 microns Excellent (rating 5) Good (rating 4) Excellent 2.0 Dilute to correct viscosity (e.2 Component 2 Epoxy resin dispersion 358.090-E5 Page 11 of 11 TABLE 7 Waterborne two-component anti-corrosion primer Binder: epoxy resin INGREDIENTS PARTS BY WEIGHT (Kg/1000 Kg) Component 1 Hardener in coalescing solvent 82.5 – 3 hours 1) 1) .or brush application AQUAFLOW NHS-300 can be added to the required level of increased film build TABLE 7A Properties of the waterborne two-component anti-corrosion primer PAINT PROPERTY Paint diluted to 30-40 sec.7 Defoamer 1.1 Water 166.