LUDOX Colloidal Silica - Grace

1 Enriching Lives, Everywhere. LUDOX Colloidal SilicaGrace Materials TechnologiesLUDOX Colloidal SilicaContentsIntroduction3 Colloidal SilicaProduct Portfolio4 LUDOX Colloidal Silica Product RangeFunctions and Applications5 Typical Product Recommendationsby ApplicationBinder ApplicationsCoatings6 Other ApplicationsShipping Containers, Packaging7 Safety IssuesREACHG lobal ScopeGrace Product RangeLUDOX Colloidal SilicaSYLOID Matting Agents for CoatingsSYLOJET Pigments for Ink Jet CoatingsSYLOWHITE Titanium Dioxide Extenders for Paints and Printing InksDURAFILL Special Pigments and Fillers for the Paper and Pulp IndustryTRISYL Silica Gel for Refining Edible OilDARACLAR Beer StabilizersCRYOSIV Desiccant for Refrigerant DryingPHONOSORB Beaded Adsorbents for Insulating GlassSAFETYSORB Desiccants for the Pharmaceutical and Diagnostic ApplicationsSYLOSIV Molecular Sieve Powder for the Polyurethane IndustrySYLOBLANC /SYLODENT /ELFADENT Abrasive and Thickening Agents for the Toothpaste IndustrySHIELDEX Non-toxic Anti-corrosion PigmentsPERKASIL Reinforcing Agents for the Tire and Rubber IndustryAPPERTA Can CoatingsDAREX Can and Closure SealantsSISTIAGA Can CoatingsCELOX Oxygen ScavengersSINCERA Closure SealantsGRACE , Grace DAVISON.

2 APPERTA , CELOX , CRYOSIV , DAREX , DARACLAR , LUDOX ,PHONOSORB , SAFETYSORB ,SHIELDEX , SINCERA , SYLOBLANC , SYLODENT ,SYLOID , SYLOJET ,SYLOSIV , TRISYL and ENRICHING LIVES, EVERYWHERE. are trademarks, registered in the UnitedStates and/or other countries, of W. R. Grace & SISTIAGA is a trademark, registered in theUnited States and/or other countries of Grace , Grace , is a wholly owned subsidiary of W. R. Grace & SYLOWHITE is a trademark of W. R. Grace & , DURAFILL , and PERKASIL are trademarks, registered in the United States and/or othercountries, of Grace Silica GmbH. Grace Silica GmbH is a wholly owned subsidiary of W. R. Grace & SIGMA is a trademark, registered in the United States and/or other countries of Motorola, Inc. Thisbrochure is an independent publication and is not affiliated with, nor has it been authorized, sponsored, orotherwise approved by Motorola, trademark list has been compiled using available published information as of the publication date ofthis brochure and may not accurately reflect current trademark ownership or status.

3 Copyright 2012 W. R. Grace & All rights +H +HAI2O3 OOOOOSiSiSiO2AI orNa +Na +HH +H +NH4 +NH4 +OOOO O orSiSiSi3 The alkalinity of most grades results in particles thatare negatively charged. These grades are stable in thepH 8 - 11 range. Some grades contain surface modifiedsilica particles to give broader stability (pH 4 - 11 ). Othergrades contain particles that have been surface modifiedto render them positively most applications, the desired effects of LUDOX Colloidal Silica are realized after the sol has been mixedwith other components and converted to a dry solid viaa special form of sol-gel reaction. These mixtures canbe gelled by (1) removing water, (2) changing pH, or (3)adding a salt or water-miscible organic solvent. Duringdrying, the hydroxyl groups on the surfaces of theparticles react to form bonds either with other silicaparticles or with other components of the our broad product offering in terms of particle sizes,distribution and surface modification combined with highquality standards, LUDOX Colloidal Silica brings excellentperformance in many different smooth surfaces such as flooring and paper, colloidalsilica particles increase the surface coefficient of friction,giving antislip properties.

4 Colloidal Silica particles can reactwith a material bearing the opposite charge, resulting inintense flocculation. This effect is useful in the manufactureof insulation articles, paper and LUDOX particles are charge stabilized; that is, acharge is induced on the particle surfaces so that theyrepel each GradesIntroductionLUDOX Colloidal Silica contains discrete, spherical parti-cles of amorphous Silica in the low nanometer size particles are dispersed in water, are non-porous andexhibit no detectable Colloidal Silica is especially useful in applicationsrequiring chemical inertness and heat resistance in thefinal product. The particles develop strong adhesive andcohesive bonds and are effective inorganic binders for alltypes of granular and fibrous materials, especially whereuse at elevated temperature is Particle InteriorpH Stable GradesSilica Particle Interior4 Specialty Grades<Grades formulated with ethylene glycol for Freeze Stabilized (FS) grades or for easier equipment cleanup (CL-X, PG-E)<Fining (F) gradesLUDOX Colloidal Silica Product Range(1) M = Monodisperse, P = Polydisperse / (2) Specific Surface Area / (3) PIC = Precision Investment Casting / (4) Freeze stabilized (FS) grade available / (5) Fining (F) grade available(6)

5 Formulated for easier clean up in paper frictionizingStrong binderperformanceExcellent combinationof binder performanceand stabilityExcellent surfacemodificationperformance andformulation stabilityOptimum surfacemodification andpolishing performance Particle Characteristics Negative Sols Positive Sols (Anionic) (Cationic) Particle Size Particle Size SSA (1) Sodium Ammonium pH Stable PIC (3)Chloride Relative Distribution (2) (m2/g SiO2) Counter Ion Counter Ion Alkaline Acidic BindersCounter Ion Benefits Very small M 320 400 SM SM-AS M 198 258 HS-30(4,5) AS-30 AM HSA SK CL HS-30 HIPH SK-F Small HS-40(4)

6 SK-R LS P 230 290 PX-30(4,5) M 110 150 TM-50 AS-40 TMA CL-P Intermediate CL-X(6) P 130 180 PT-40 PT-40AS PG-E(6) Large P 60 90 PW-30(4) PW-50(4) BenefitsProduct PortfolioParticles<are discrete, uniform spheres of amorphous Silica <are non-porous<have no detectable crystallinityGrades are distinguished by.

7 <Particle Size/Specific Surface Area<Particle Size Distribution MMonodisperse PPolydisperse<Stabilization <Negatively charged particles Alkaline grades with either sodium or ammonium counter ions Surface modified grades for broader pH stability <Positively charged particles by surface modification< Silica contentCost effective,large productrangeFugitive counterion, low sodiumcontentBroad pHstabilityBroad pHstability,low sodiumcontentStable,enhancedbinders,see SK brochurefor detailsAdsorbs tonegativelycharged surfaces5 Function and ApplicationsBinder for granular & fibrous material<Strong ionic or hydrogen bonding with polymers<Temperature resistant and chemically inert Precision Investment Casting Vacuum formed refractory shapes Insulation board Catalysts Specialty CoatingsSurface Modifier<Particles increase coefficient of friction of surfaces Paper, cardboard Coatings Flooring Surface polishingFlocculant<Particles ionically bond with polymers or other particles of opposite charge Paper retention & drainage Beverage fining (wine, beer) Insulation boardTypical Product Recommendations by ApplicationBinder ApplicationsColloidal Silica is the preferred binder for making ceramic molds in the precision investment casting process.

8 Water basedcolloidal Silica is a safer alternative to ethyl silicate binders. lts high temperature characteristics and chemical inertness makesit ideal for binding a wide variety of refractory materials for the casting of many metals and alloys. Colloidal Silica may also beused to bind materials made from ceramic fibers, such as insulation and ceramic parts, and in catalysts and molecular sieveswhere it increases strength and reduces picture of monodisperse LUDOX Colloidal silicaTEM picture of polydisperse LUDOX Colloidal silica100nm10nm100nm10nm LUDOX Colloidal Silica Grades Uses SM HS AM AS SK TM PX-30 PT-40 PT-40AS High temperature binder Precision Investment Casting 3 3 3 3 Vacuum formed fibrous shapes 3 3

9 3 3 3 3 3 Refractory cements 3 3 Stool and mold coatings 3 3 lnsulation board 3 3 Catalysts, molecular sieves 3 3 3 3 Reinforcing agent Adhesives.

10 Caulks 3 3 3 3 3 3 3 Elastomeric foams 3 3 36 LUDOX Colloidal Silica Grades Uses SM HS LS AM AS TM TMA CL CL-P PX-30 PW Coatings Paper and film 3 3 3 3 3 Duplicating paper 3 3 3 Latex films 3 3 3 3 3 Inorganic coatings Electrical steel 3 3 3 3 Bricks 3 3 3 Steam promotor 3