RHOPLEX EI-8764 An Acrylic Polymer for Exterior Insulation and Finish Systems

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1 RHOPLEX EI-8764 An Acrylic Polymer for Exterior Insulation and Finish Systems Description is a high solids, 100% acrylic polymer that functions as the binder for non-cementitious EIFS components. These include the basecoat, adhesive, and finish coat. To these EIFS components imparts good water resistance, adhesion, and durability. polymer provides good colorfastness, resistance to yellowing, and good resistance to chalking. In addition, polymer has good resistance to dirt, but does not contain Rohm and Haas proprietary dirt pick-up resistance chemistry. polymer is not compatible with Portland cement. Table 1 Typical Physical Properties These properties are typical but do not constitute specifications. Product Properties EI-8764 Solids Content, % Weight/Gal, Lbs 8.85 ph Emulsifier Charge Anionic Brookfield Viscosity, Cps Minimum Film Formation Temperature, C 5-9 Tg C (Midpoint) Freeze/Thaw Stability (five -18 C) Key Features ¹Measured by DSC (Differential Scanning Colorimitry) Pass Binder for finish, non-cementitious adhesive, and non-cementitious basecoat; not compatible with Portland cement Textured Finish Formulation Material Pounds Gallons Ethylene Glycol Nopco NXZ Ti-Pure R Attagel Sand #15 Mesh Sand #90 Mesh Copper Nitrate SKANE M Texanol ACRYSOL ASE Water Aqueous Ammonia (28%) Totals 1, PVC, % 70 Volume Solids, % 67 Lbs/Gal 15.2 Weight Solids, % 82.1

2 Table 2 Typical Performance Properties of a Textured Finish Initial ph 9.1 Viscosity, PU 135 Freeze/Thaw Stability (-18 C) ph 9.1 Viscosity, PU 128 After C ph 9.0 Viscosity, PU 138 Flexibility Mandrel Bend (0.625" thick coating) 14 days cure RT 50 F 30 F 4" Pass Pass Pass 2" Pass Pass Some Cracking 1" Pass Pass 1/2" Pass Pass Wet Scrub Resistance % weight loss after 2000 cycles Room temperature, 24-hour cure 3 40 F, 24-hour cure 5 7-Hour Wash Off Resistance Room temperature, 24-hour cure 40 F, 24-hour cure Finish Properties Adhesion to Base Coat No effect No effect 7 days RT cure >1500 gm(c)¹ 7 days RT cure + 1 hour fog box exposure >1500 gm(c)¹ Exterior Exposure after 36 months South 45 South Vertical North Vertical Dirt/Mildew Resistance General Mildew Resistance Resistance to Chalking Resistance to Cracking Resistance to Adhesion Loss not run Resistance to Algae Constants Pigment Volume Content, % 70 Volume Solids, % 67 Weight Solids, % 82.1 ¹Denotes cohesive failure with finish coat

3 Starting Point for a Non-Cementitious Adhesive Based on Material Pounds Gallons Water Natrosol 250 HR (60.5%) Nopco NXZ TAMOL 731 (25%) Attagel Duramite (CaCO 3 ) Texanol NH 4 OH (28%) Totals 1, Weight Solids, % 68.7 Volume Solids, % 53.6 Pigment Volume Content, % 48.1 Table 3 Stability Properties Comparison of Non-Cementitious Adhesive Formulation JR-8724A Versus a Commercially Available Non-Cementitious Adhesive for Physical Properties Latex JR-8724A Commercial Adhesive Workability Very Good Very Good Initial Viscosity, PU ph After 5 Cycles Freeze/Thaw at -18 C Pass 5 cycles Fail First Cycle Viscosity, PU 131 ph 9.20 Heat Aged Stability After C Good Slight Syneresis (redisperses) Viscosity, PU ph Table 4 Comparison of Non-Cementitious Adhesive Formulation JR-8724A Versus a Commercially Available Non-Cementitious Adhesive for Performance Properties Latex JR-8724A Commercial Adhesive 180 Peel Adhesion Strength, lb/in Gloss Alkyd Paint DRY 3.0 (EPS)¹ 2.0 (Adhesive) WET 4.0 (EPS) 1.0 (Adhesive) Tensile Bond Adhesion, psi¹ EPS to Plywood DRY, 7 days 23 (EPS) 25 (EPS) EPS to Densglas Gold DRY, 7 days 27 (EPS) 22 (EPS) EPS to OSB DRY, 7 days 31 (EPS) 27 (EPS) ¹Description in parentheses represents the type of failure: EPS = failure in EPS; Adhesive = failure between sample and substrate

4 Starting Point for a Non-Cementitious Adhesive Based on Material Name Pounds Gallons Water Natrosol 250HR (100%) (60.5%) AMP Nopco NXZ Ethylene Glycol Ti-Pure R-942 (76.5%) Alsibronze Sand #125 Mesh Silica Flour /4" polyester fibers Texanol KATHON LX 1.5% Totals 1, Pigment Volume Content, % 79.5 Volume Solids, % 67.9 Weight Solids, % 83.4 Table 5 Performance Properties of a Non-Cementitious Basecoat Based on Workability After 5 Cycles Freeze/Thaw at -18 C After Heat Aging for 10 Days at 60 C Non-Cementitious Basecoat Very Good Pass 5 Cycles Pass Flexibility, Mandrel Bend Method 72 F Pass 1 inch 40 F Pass 1 inch Typical Performance Properties of a Non-Cementitious Basecoat EPS to Plywood EPS, dry EPS, wet Plywood, dry Plywood, wet ¹Description in parentheses represents type of failure Tensile Bond Adhesion, psi after 7 days 72 F 21 (Cohesive) 180 Peel Adhesion, pl¹ >1500 (Cohesive) 333 (Cohesive) >1500 (Cohesive) 500 (Cohesive) Safe Handling Information 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 Standards, 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 product in their workplace.

5 Rohm and Haas Company sends MSDS on non-hazardous as well as OSHA-hazardous products to both the "bill to" and "ship to" locations of all our customers upon initial shipment (including samples) of all 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 supplier of other materials recommended in this bulletin. ACRYSOL, KATHON, RHOPLEX, AND SKANE are trademarks of Rohm and Haas Company, or of its subsidiaries or affiliates. RHOPLEX is intended to designate goods marketed in North and South America; the same goods may be marketed in other countries, generally under the 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 basis. 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, 2008 All rights reserved. January EIFS-4