RHOPLEX SG-10M 100% Acrylic Emulsion For Interior/Exterior Semigloss Latex Paints Description RHOPLEX SG-10M emulsion is a versatile 100% acrylic copolymer that was designed for use in high-quality interior/exterior semigloss paints. RHOPLEX SG-10M emulsion provides paint formulators with an opportunity to achieve excellent early and ultimate block resistance, and very good flow and leveling. This product establishes a new level of performance for aqueous semigloss applications. The results of laboratory tests comparing the performance properties of RHOPLEX SG-10M emulsion against RHOPLEX AC-417M emulsion, a basic time-proven acrylic vehicle, are included in this bulletin to demonstrate the unique performance characteristics of RHOPLEX SG-10M emulsion in interior paints. Years of exposure and commercial experience demonstrate the excellent exterior durability you would expect from a Rohm and Haas RHOPLEX 100% acrylic binder. Some of the appealing features of RHOPLEX SG-10M emulsion based formulations are shown at bottom of page. Application and Performance Properties Flow The excellent flow properties of a formulation based on RHOPLEX SG-10M emulsion are much better than those of a formulation based on RHOPLEX AC-417M emulsion. RHOPLEX SG-10M emulsion is designed for maximum performance with associative rheology modifiers and is superior to commercial acrylic and vinyl/acrylic polymers. Block Resistance Figures 1 and 2 illustrate the dramatically superior block resistance obtained by using RHOPLEX SG-10M emulsion instead of RHOPLEX AC-417M emulsion in tests conducted over a seven day period at room temperature and at 120 F. There is a rapid development of block resistance with no film damage after one day at room temperature. Figure 2 also shows the excellent performance of coatings based on RHOPLEX SG-10M emulsion at elevated temperatures. Figure 1 - Room Temperature Block Resistance
Figure 2 - High Temperature Block Resistance Scrub Resistance The superior abrasive scrub resistance furnished by formulations based on RHOPLEX SG-10M emulsion over those based on RHOPLEX AC-417M emulsion is shown in Figure 3. Moreover, the use of RHOPLEX SG-10M emulsion produces an excellent balance of adhesion and scrub resistance. Figure 3 - Abrasive Scrub Resistance Durability Based on composition, RHOPLEX SG-10M emulsion promises to have very good exterior durability. Outdoor exposure testing of RHOPLEX SG-10M emulsion based coatings has been recently initiated. Features Application Excellent flow and leveling Good thickener efficiency Good hiding Performance Superior block resistance at room and elevated temperatures Excellent scrub resistance Excellent wet and dry adhesion to a variety of substrates High gloss potential Good gloss clarity on tinting Typical Physical Properties These properties are typical but do not constitute specifications. Appearance Solids Content 50.0% Brookfield Viscosity (25 C, #2 spindle @ 60 rpm) Specific Gravity of Latex @ 25 C 1.1 Weight per Gallon @ 25 C 8.82 Dry Bulking Value Wet Bulking Value White milky liquid 50-400 cp max 0.106 gal/lb 0.113 gal/lb ph 8.5-9.0 Minimum Film Formation Temperature (MFT) 16 C
Key Property Comparison Summary Typical Properties of Interior Semigloss Formulations Based on RHOPLEX SG-10M Emulsion and RHOPLEX AC-417M Emulsion Property RHOPLEX SG-10M RHOPLEX AC-417M Pigment Volume content, % 23.7 23.7 Volume Solids, % 34.0 34.0 Pigment TiO 2 TiO 2 Thickener ACRYSOL RM-2020NPR HEC Initial Viscosity, KU 88 92 Equilibrated Viscosity, ICI 1.6 1.5 Equilibrated ph 8.7 9.1 Brushed Film Build (g/sq ft) 13.6 9.5 Brushed Flow very good fair Brushed Gloss (20 /60 ) 34/75 9/55 Drawdown Gloss (20 /60 ) 32/75 14/57 Block Resistance* 1 day (120 F/room temp.) 3 days 7 days 1.5/8.5 8/9 8/9 0/2 0/6 0/8 Scrub Resistance (cycles) 1000 500 Adhesion Weighted Pull >1000 g >1000 g 7 days (Gloss Alkyd) Thickener Efficiency ++ standard Hiding + standard Stain Removal equal standard Color Acceptance OK OK Heat Age Stability (10 days) pass pass Freeze/Thaw Stability (5 cycles) pass pass * Rating: 0-10 (10 best) + = moderately improved + = greatly improved Formulating Guidelines Rheology Modifiers RHOPLEX SG-10M emulsion is best formulated with urethane rheology modifiers to get the best flow in a film. A combination of ACRYSOL RM-2020NPR modifier and ACRYSOL RM-825 modifier exhibit excellent flow and leveling. ACRYSOL RM-5 modifier gives inferior flow and HEC should be avoided. Dispersants TAMOL 731 dispersant gives the best overall properties. Slight improvements in gloss can be achieved with TAMOL 1124 dispersant, and TAMOL 165 dispersant can be used if water sensitivity is an issue. TAMOL 681 dispersant is not recommended because it shows poorer performance for block resistance. Polyacid dispersants such as TAMOL 1254 and Colloid 226 have very poor color acceptance and stability in combination with ACRYSOL RM-2020NPR modifier. Biocides KATHON LX 1.5% preservative is recommended as a biocide, but the order of addition is important. To avoid flocculation problems, KATHON LX 1.5% biocide should be added to the grind before the addition of the pigments. Coalescents Texanol is the coalescent recommended for use with RHOPLEX SG-10M emulsion. For marginal drying conditions, formulators should use this product at a level of 10% on latex binder solids to ensure adequate film formation. In interior applications lower levels of Texanol, as little as 6%, can be used. However the film formation properties of paints containing low levels of coalescent should be tested before use under adverse conditions.
Defoamers Henkel s Foamaster VL has effectively suppressed foam in the Rohm and Haas test formulations. A typically used level is two pounds per 100 gallons of paint. Handling of Emulsions As with all hard emulsion polymers, special care should be taken with RHOPLEX SG-10M emulsion to avoid the formation of dried polymer particles that can cause grit problems. We recommend that the material be filtered before the emulsion is pumped into the letdown vessel. Filter bags with 100-250 micron (150-60 mesh) size have proven effective. Another situation to avoid while handling the emulsion is the generation of foam. There should be no free fall of emulsion. It is imperative that suitable materials of construction of tanks, pumps, lines, and other auxiliary equipment be used. We recommend stainless steel or plastic. See our brochure 1-PRM for more details. Suggested Formulations Starting point formulations customized to your specific application needs are available from either your local technical representative or the Rohm and Haas corporate headquarters in. Suppliers of Suggested Raw Materials Trade Name Function Supplier ACRYSOL RM-5 ACRYSOL RM-825 Rheology Modifiers Rohm and Haas Company ACRYSOL RM-2020NPR Foamaster VL Defoamer Henkel Corp. Ambler, PA KATHON LX 1.5% Biocide Rohm and Haas Company TAMOL 165, TAMOL 681M, TAMOL 731, TAMOL 1124, TAMOL 1254 Dispersants Rohm and Haas Company Texanol Coalescent Eastman Chemical Products Kingsport, TN Safe Handling Information Based on the character of similar materials, this product is not expected to be toxic via single acute oral or dermal exposure. It may be a mild-to-moderate skin and eye irritant. Rohm and Haas Material Safety Data Sheets (MSDS) contain pertinent information that you may need to protect your employees and customers against any known health or safety hazards associated with our products. Under the OSHA Hazard Communication Standard, workers must have access to and understand MSDS on all hazardous substances to which they are exposed. Thus, it is important that you provide appropriate training and information to your employees and make sure they have available to them MSDS on any hazardous products in their workplace. Rohm and Haas Company sends MSDS on non-osha-hazardous products to both the "bill to" and "ship to" locations of all our customers upon initial shipment (including samples) of all of our products (whether or not they are considered OSHA-hazardous). If you do not have access to one of these MSDS, please contact your local Rohm and Haas representative for an additional copy. Updated MSDS are sent upon revision to all customers of record. In addition, MSDS are sent on an annual basis to all customers of record. MSDS should be obtained from your suppliers of other materials recommended in this bulletin.
ACRYSOL, KATHON, and TAMOL are registered trademarks of Rohm and Haas Company, or of its subsidiaries or affiliates, and are intended to designate goods marketed in North and South America; the same goods may be marketed in other countries, generally under other company trademark designations. These suggestions and data are based on information we believe to be reliable. They are offered in good faith, but without guarantee, as conditions and methods of use of our products are beyond our control. We recommend that the prospective user determine the suitability of our materials and suggestions before adopting them on a commercial scale. Suggestions for uses of our products or the inclusion of descriptive material from patents and the citation of specific patents in this publication should not be understood as recommending the use of our products in violation of any patent or as permission or license to use any patents of the Rohm and Haas Company. Rohm and Haas, 2007 All rights reserved. June 1997 81A143