ACUMER 9400 High-Performance Dispersant for Various Minerals

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1 Technical Data Sheet ACUMER 9400 High-Performance Dispersant for Various Minerals Description ACUMER 9400 high-performance mining polymer is a polycarboxylate dispersant. ACUMER 9400 mining polymer allows for the lowest viscosities in high-solids kaolin slurries, and works well with all clay types under the most extreme conditions. At elevated temperature, ACUMER 9400 polymer outperforms most commercially available clay dispersants. Typical Properties ACUMER 9400 Result Appearance Slightly viscous, golden colored solution polymer Chemical nature Acrylic homopolymer Grade Sodium salt Molecular weight 3,000 4,000 Total solids (%) ~ 42 ph 7 Viscosity Brookfield, 25 C) ~ 600 These properties are typical but do not constitute specifications. Use and Properties ACUMER 9400 products (9400, 9410, 9420, and 9460) are a family of water-soluble polymers supplied in water. Some ph versions are available in only selected geographical regions. Check with your local Dow representative for the availability. ACUMER ph ACUMER 9400 HS is a high-solids version (47.5) of ACUMER 9400, available only in Latin America Region. This polymer is typically used to disperse and stabilize high solids mineral slurries which include calcium carbonate (pcc, gcc), kaolin clay, talc, titanium dioxide, lime and aluminum hydroxide. This polymer is one of the most widely used mineral dispersants globally. Page 1 of 7

2 Recommended Dosage Kaolin (hydrated, calined, delaminated) 70-75% slurries % w/w dry Calcium Carbonate course ground 71-76% solids, 60% < 2 micron % w/w fine ground 71-78% solids, 90% < 2 micron % w/w Kaolin Dispersant The data below describe the effectiveness of ACUMER 9400 high-performance dispersant for various minerals in stabilizing a typical kaolin slurry at 73.5% solids. ACUMER 9400 polymer was compared at equal concentrations to ACUMER 9141 polymer. Polymer % dry/dry Viscosity Brookfield RVT ph 73/5% solids 20 rpm 100 rpm Page 2 of 7

3 The viscosity curves above show that ACUMER 9400 high-performance dispersant has better performance than ACUMER 9141 at 73.5% solids with lower viscosity, at typical dosages. Four weeks stability test results are reported in Graphs III and IV below. Page 3 of 7

4 No phase separation nor sedimentation was observed in stagnant or mixed slurries after 4 weeks. 73.5% kaolin slurries with ACUMER 9400 high-performance dispersant showed good stability after 4 weeks. Page 4 of 7

5 Ceramic Applications Replacement for Phosphates (STPP) Performance ACUMER dispersants benefit most ceramic applications whether it be kaolin slurries, ball clay slurries, or ceramic slip grinding and dispersion. ACUMER dispersants aid in: wettability slip viscosity grinding slip stability Figures 1 and 2 show the relationship of slip viscosity versus slip solids for two ceramic tile manufacturers. Page 5 of 7

6 Conclusion: In both cases, the ACUMER polymers outperformed STPP even at the higher STPP dosage. The rapidly increasing cost of phosphates make the ACUMER polymer option even more attractive. Figure 3 shows the relationship of specific gravity to solids for a typical ceramic slip. The ceramic mix was wet ground to 5% retained on 200 mesh screen. This relationship held for all dispersants tested on this particular slip. Conclusion: As the slip solids increase, the slurry density increases. Page 6 of 7

7 Handling Precautions Storage Before using this product, consult the Material Safety Data Sheet (MSDS)/Safety Data Sheet (SDS) for details on product hazards, recommended handling precautions and product storage. Store products in tightly closed original containers at temperatures recommended on the product label. Dispose in accordance with all local, state (provincial) and federal regulations. Disposal Considerations Empty containers may contain hazardous residues. This material and its container must be disposed in a safe and legal manner. It is the user's responsibility to verify that treatment and disposal procedures comply with local, state (provincial) and federal regulations. Contact your Dow Technical Representative for more information. Product Stewardship Customer Notice Dow has a fundamental concern for all who make, distribute, and use its products, and for the environment in which we live. This concern is the basis for our product stewardship philosophy by which we assess the safety, health, and environmental information on our products and then take appropriate steps to protect employee and public health and our environment. The success of our product stewardship program rests with each and every individual involved with Dow products from the initial concept and research, to manufacture, use, sale, disposal, and recycle of each product. Dow strongly encourages its customers to review both their manufacturing processes and their applications of Dow products from the standpoint of human health and environmental quality to ensure that Dow products are not used in ways for which they are not intended or tested. Dow personnel are available to answer your questions and to provide reasonable technical support. Dow product literature, including safety data sheets, should be consulted prior to use of Dow products. Current safety data sheets are available from Dow. Contact: North America: Latin America: (+55) Europe: (+800) (Toll) Asia-Pacific: (+800) (Toll) NOTICE: No freedom from infringement of any patent owned by Dow or others is to be inferred. Because use conditions and applicable laws may differ from one location to another and may change with time, Customer is responsible for determining whether products and the information in this document are appropriate for Customer's use and for ensuring that Customer's workplace and disposal practices are in compliance with applicable laws and other government enactments. The product shown in this literature may not be available for sale and/or available in all geographies where Dow is represented. The claims made may not have been approved for use in all countries. Dow assumes no obligation or liability for the information in this document. References to Dow or the Company mean the Dow legal entity selling the products to Customer unless otherwise expressly noted. NO WARRANTIES ARE GIVEN; ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED. Page 7 of 7