ZEOLEX Sodium Aluminosilicate and HYDREX Magnesium Aluminosilicate For TiO₂ Extension

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Thomasine McKenzie
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1 TECHNICAL INFORMATION 1421 ZEOLEX Sodium Aluminosilicate and HYDREX Magnesium Aluminosilicate For TiO₂ Extension L+L TI ZEOLOEX HYDREX for TiO2 Extension, us_6-seiter.indd 17. Aug 2017; 12:38 Uhr

Evonik silicate solutions for the paper market are engineered to provide

effective replacements for titanium dioxide (TiO₂) in many types of paper

In addition to increased quality, by utilizing ZEOLEX sodium

replacement for TiO₂, producers also see improvements in bulk and less

manufactured by precipitating a sodium or magnesium silicate solution with

board with a significant number of light scattering interfaces between air,

Due to their structures, ZEOLEX sodium aluminosilicate and HYDREX magnesium

properly spacing the TiO₂ resulting in opacity and brightness increases

Through advanced product technology and custom application development and

2 Evonik silicate solutions for the paper market are engineered to provide superior performance by improving quality and generating cost savings as a replacement for. ZEOLEX sodium aluminosilicate and HYDREX magnesium aluminosilicate are effective replacements for titanium dioxide (TiO₂) in many types of paper and board grades. In addition to increased quality, by utilizing ZEOLEX sodium aluminosilicate or HYDREX magnesium aluminosilicate as a total or partial replacement for TiO₂, producers also see improvements in bulk and less abrasivity reducing excessive and costly wearing of paper machine parts. ZEOLEX sodium aluminosilicate and HYDREX magnesium aluminosilicate are manufactured by precipitating a sodium or magnesium silicate solution with aluminum sulfate creating a unique pore structure which provides paper or board with a significant number of light scattering interfaces between air, pigment and fiber. Due to their structures, ZEOLEX sodium aluminosilicate and HYDREX magnesium aluminosilicate optimize inter-particle distance for light scatter ing by properly spacing the TiO₂ resulting in opacity and brightness increases along with improved appearance. Through advanced product technology and custom application development and support, we provide the optimal solution for your next paper or board project. END USE BENEFITS Higher Brightness Improved Opacity Improvement to Paper Bulk Low Abrasivity 2 L+L TI ZEOLOEX HYDREX for TiO2 Extension, us_6-seiter.indd 17. Aug 2017; 12:38 Uhr

ZEOLEX Sodium Aluminosilicate Technical Information Figure 1: Replacement Scattering Coefficient, m²/kg 138 137 136 135 134 133 132 131 130 129 128 TiO₂ 100% TiO₂/ ZEOLEX 123, 95/5 TiO₂/ ZEOLEX 123,

particles attached to surface of ZEOLEX sodium aluminosilicate HYDREX Magnesium Aluminosilicate Technical Information Figure 2: Paper Brightness Brightness D65 (%) Ash Content 87,0 22,0 21,5 86,5

3 ZEOLEX Sodium Aluminosilicate Technical Information Figure 1: Replacement Scattering Coefficient, m²/kg TiO₂ 100% TiO₂/ ZEOLEX 123, 95/5 TiO₂/ ZEOLEX 123, 90/10 TiO₂/ ZEOLEX 123, 85/15 TiO₂/ ZEOLEX 123, 80/20 The structure of ZEOLEX sodium aluminosilicate provides the ideal spacing for resulting in high utilization, good light scattering and opacity. particles attached to surface of ZEOLEX sodium aluminosilicate HYDREX Magnesium Aluminosilicate Technical Information Figure 2: Paper Brightness Brightness D65 (%) Ash Content 87,0 22,0 21,5 86,5 21,0 20,5 86,0 20,0 19,5 85,5 19,0 18,5 85,0 18,0 17,5 84,5 17,0 3% 2% HYDREX P HYDREX P 2% HYDREX P 3% HYDREX P 4% HYDREX P 5% Brightness Ash GCC = Ground Calcium Carbonate Brightness is improved as HYDREX magnesium aluminosilicate is increased with the optimum application rate being 5 % and no. 3

4 Figure 3: Paper Bulk Bulk (cm 3 /g) Ash Content 1,60 22,0 21,5 1,55 21,0 20,5 20,0 1,50 19,5 19,0 1,45 18,5 18,0 17,5 1,40 17,0 3% 2% HYDREX P HYDREX P 2% HYDREX P 3% HYDREX P 4% HYDREX P 5% Brightness Ash GCC = Ground Calcium Carbonate HYDREX magnesium aluminosilicate provides a dramatic improvement to paper bulk when compared with. Improvement is related to the differences in filler structure and density. Figure 4: Board Brightness Board Whiteness ISO Brightness, (%) 79,0 Whiteness, (%) 78 78, , , ,0 Reference + HYDREX 74 + HYDREX Whiteness, UV On Whiteness, UV Off HYDREX magnesium aluminosilicate has extremely high brightness, improving body layer coverage together with, resulting in higher board brightness and whiteness than alone. 4

HYDREX P 2% HYDREX P 3% HYDREX P 4% HYDREX

5 Figure 5: Opacity Normalized Opacity, % (80g/m 2 ) Ash Content 92,0 22,0 21,5 91,5 21,0 20,5 91,0 20,0 19,5 90,5 19,0 18,5 90,0 18,0 17,5 89,5 17,0 3% 2% HYDREX P HYDREX P 2% HYDREX P 3% HYDREX P 4% HYDREX P 5% Brightness Ash GCC = Ground Calcium Carbonate Samples with 3 % HYDREX magnesium aluminosilicate plus 1 % as well as 5 % Hydrex magnesium aluminosilicate provide better opacity than the reference with 3 %. 5 L+L TI ZEOLOEX HYDREX for TiO2 Extension, us_6-seiter.indd 17. Aug 2017; 12:38 Uhr

6 This information and any recommendations, technical or otherwise, are presented in good faith and believed to be correct as of the date prepared. Recipients of this information and recommendations must make their own determination as to its suitability for their purposes. In no event shall Evonik assume liability for damages or losses of any kind or nature that result from the use of or reliance upon this information and recommendations. EVONIK EXPRESSLY DISCLAIMS ANY REPRESENTATIONS AND WARRANTIES OF ANY KIND, WHETHER EXPRESS OR IMPLIED, AS TO THE ACCURACY, COMPLETENESS, NON-INFRINGEMENT, MERCHANT- ABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE (EVEN IF EVONIK IS AWARE OF SUCH PURPOSE) WITH RESPECT TO ANY INFORMATION AND RECOMMENDATIONS PROVIDED. Reference to any trade names used by other companies is neither a recommendation nor an endorsement of the corresponding product, and does not imply that similar products could not be used. Evonik reserves the right to make any changes to the information and/or recommendations at any time, without prior or subsequent notice. Europe / Middle-East / Africa / Latin America Evonik Resource Efficiency GmbH Business Line Silica Rodenbacher Chaussee Hanau-Wolfgang Germany phone fax ask-si@evonik.com North America Evonik Corporation Business Line Silica 299 Jefferson Road Parsippany, NJ USA phone fax ask-si-nafta@evonik.com Asia / Pacific Evonik (SEA) Pte. Ltd. Business Line Silica 3 International Business Park #07 18 Nordic European Centre Singapore phone fax ask-si-asia@evonik.com More silica grades from Evonik see also RE-20-US-June17-L+L

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