Brandon L. HuntBrandon L. HuntTechnical Team LeaderTechnical Team Leader

Kansas SBEAP: Reducing Solvent Emissions SeminarKansas SBEAP: Reducing Solvent Emissions Seminar

Wichita, KSWichita, KS

March 10, 2009March 10, 2009

Reducing Solvent EmissionsReducing Solvent Emissions in in

Liquid CoatingsLiquid Coatings

Why is Solvent in Why is Solvent in Coatings?Coatings?

SolubilitySolubility Reduces viscosityReduces viscosity

Ease of applicationEase of application AtomizationAtomization PotlifePotlife

Film formationFilm formation Dry timeDry time

Sag resistanceSag resistance Flow/LevelFlow/Level

Low VOC/HAP TechnologyLow VOC/HAP Technology

Application TechnologyApplication Technology

Formulation/Process Formulation/Process TechniquesTechniques

Future TrendsFuture Trends

Avenues to Reducing Avenues to Reducing EmissionsEmissions

Low VOC/HAP TechnologyLow VOC/HAP Technology WaterborneWaterborne

Comparable durabilityComparable durability

Ability for very low VOCAbility for very low VOC

Proper solvents can make HAP-freeProper solvents can make HAP-free

Temperature and humidity dependentTemperature and humidity dependent

Must not be allowed to freezeMust not be allowed to freeze

Low VOC/HAP TechnologyLow VOC/HAP Technology High SolidsHigh Solids

Low VOC/HAP levelsLow VOC/HAP levels Up to 100% solidsUp to 100% solids Aesthetic limitations to higher solidsAesthetic limitations to higher solids

Exempt Solvents/Solvent SubstitutionExempt Solvents/Solvent Substitution Exempt solvents count as VOC in other Exempt solvents count as VOC in other

countriescountries Exempt reducer can reduce emissions but does not Exempt reducer can reduce emissions but does not

alter the compliance VOCalter the compliance VOC Few solvents are exempt; limited Few solvents are exempt; limited

solubilitysolubility Substitute solvents can achieve HAP compliance Substitute solvents can achieve HAP compliance

without significantly changing coatingwithout significantly changing coating

Low VOC/HAP TechnologyLow VOC/HAP Technology Energy Cure (UV/EB)Energy Cure (UV/EB)

Part size limitationsPart size limitations Curing equipment investmentCuring equipment investment Zero VOCZero VOC

Application TechnologyApplication Technology

Transfer EfficiencyTransfer Efficiency Electrostatic, HVLPElectrostatic, HVLP

VOC reductionVOC reduction Gas carrierGas carrier

Formulation/Process Formulation/Process TechniquesTechniques

Eliminate LayersEliminate Layers DTM TechnologyDTM Technology

Eliminate pretreatment or primerEliminate pretreatment or primer

Lower Dry Film ThicknessLower Dry Film Thickness Topcoat pigmentationTopcoat pigmentation

Improved hiding power of pigmentsImproved hiding power of pigments Higher performance resinsHigher performance resins

Solvent replacementSolvent replacement Extender pigmentsExtender pigments Reactive diluents/additivesReactive diluents/additives

Future TrendsFuture Trends

Eliminate LayersEliminate LayersSelf-Stratifying TechnologySelf-Stratifying Technology

Eliminate pretreatment or primerEliminate pretreatment or primer

Hybrid TechnologyHybrid TechnologyPowder/EB CurePowder/EB Cure

Other Green TechnologyOther Green Technology

Eliminate Cr (VI)Eliminate Cr (VI)Chrome Hazard Free TechnologyChrome Hazard Free Technology

PretreatmentsPretreatmentsPrimersPrimersSurfacersSurfacers

Sherwin-Williams Sherwin-Williams InitiativesInitiatives

We believe the optimal green coating should do two things: minimize the impact on air quality and deliver maximum performance. So we've developed the GreenSure symbol to help you identify the products that meet our highest green coating standards.

EcoVision is our company-wide commitment to look for and implement ways that reduce our impact on the environment. It's a shared and ongoing vision that all Sherwin-Williams employees can help achieve.

www.sherwin-williams.com/pro/green/

Websites for further Websites for further information:information:

www.sherwin-www.sherwin-williams.comwilliams.com

www.swaerospace.comwww.swaerospace.com

Thank you!!Thank you!!

AcknowledgementsAcknowledgements: : Kenneth Gabele Kenneth Gabele Manager, Sherwin-Williams Regulatory Information Manager, Sherwin-Williams Regulatory Information ServicesServicesHeidi Perez-Hernandez Heidi Perez-Hernandez Chemist, Sherwin-Williams Aerospace CoatingsChemist, Sherwin-Williams Aerospace Coatings