EPO-TEK Specialty UV Curing Adhesives

1 Epoxy adhesive Solutions for Over 45 Years EPO-TEK Specialty UV Curing AdhesivesEpoxy-Based Systems & Acrylate-Based SystemsEpoxy-Based UV BenefitsExcellent adhesion and reliability Due to the epoxy backbone (rather than acrylate backbone)Low shrinkage Average shrinkage is approximately 1-5% (acrylate is typically 10-15%) Low shrinkage leads to low internal stress aiding adhesionNot subject to oxygen inhibition Cationic photoinitiators are not quenched by oxygen Capable of Dark Cure Cation creates the living polymer and continues to be active in the absence of UV light Enables a small degree of Curing in areas never seen by the UV light, for a limited distanceMost are thermally post-curable Greater degree of conversion than UV cure alone (Initial UV cure is required for best thermal post cure results)Shadow Curing is often critical to designs where access to UV light is (mins)

2 OG142OG116-31OG142-112OG198-55OG154-1 LedPulse HgHg LampHg SpotEpoxy UVs can be cured in 1 minute**With proper optimization through: UV lamp selection Using a UV source that generates heat Warming the formulation or substrate before application Down stream thermal Curing following UV exposure-May also improve water resistance300mil Si Die UV Irradiation Aluminum Foil Substrate Shadowed Area Well cured fillet Good cure under edges of die Fully cured centerEffect after UV cure with a thermal post cure on shadowed areasFor complete listing of UV products visit s Special About EPO-TEK UV Curing EpoxiesEpoxy Technology Inc. offers an exclusive line of high performance, UV Curing Adhesives based on Epoxy and Acrylate systems.

3 Our unique formulations provide superior performance for a wide variety of applications. This Guide will assist in determining which product(s) may be best suited for your application. Additional assistance in material selection, optimal lamp choice, and cure recommendations are readily available by contacting our Technical Application Experts at or +1 @ 23 C (cPs)TgHardness Nd*Performance FeaturesApplicationsOG11688,979@ viscosity version of OG116-31 High chemical resistanceHigh Tg & high indexVery high strengthEdge sealFiber optic assemblyGlob topOG116-3120,000 - 30,000@ 10rpm>115 chemical resistanceHigh Tg & high indexISO 10993 compliantFiber optic assemblyGasket seal and glob topMedical devicesOG142-87250 - 600@ 100rpm>100 viscosityExcellent bond strengthMoisture resistanceFiber bundling/assemblyGlob top fillMicromolded lensOG142-95534@ 100rpm>100 viscosityExcellent bond strength Moisture resistanceFiber optic assemblyGlob top fillOptical packagingOG142-1121,200 - 1.

4 700@ 100rpm>90 viscosityHigh moisture resistance Exceptional bond strengthGlob top fillMicromolded lensOptical packagingOG146-104164 @ 100rpm81 low viscosityExcellent non-yellowing propertiesFast cureFiber bundling/assemblyLCD/HapticMedical devicesOG146-178164 @ 100rpm82 viscosity & excellent flow Plastic bondingFast cureFiber bundling/assemblyLCD/HapticOLED/OPVOG159 -2100,000 - 140,000@ >30 1 mil glass beadsExcellent moisture resistanceGlob topLCD/OLED gasket sealOptical packagingUJ1190501 @ 100rpm100 viscosityGood for thick sectionsOLEDUV + Thermal Post Cure For Enhanced PerformanceFor complete listing of UV products visit s Special About EPO-TEK UV Curing EpoxiesEPO-TEK Specialty UV Curing Selector GuideEpoxy Technology Inc.

5 Offers an exclusive line of high performance, UV Curing Adhesives based on Epoxy and Acrylate systems. Our unique formulations provide superior performance for a wide variety of applications. ProductViscosity @ 23 C (cPs)TgHardness Nd*Performance FeaturesApplicationsOG178300 - 600@ 100rpm>50 viscosityLow Tg Excellent bond strength Optical packagingUV/Visible Light Cure ProductViscosity @ 23 C (cPs)TgHardnessNd*Performance FeaturesApplicationsOG133-81,000 - 1,500 @ 100rpm<10 Tg & hardness Excellent flexibilityFlex edge seal/glob topFiber optic assemblyOptical packagingOG1429,000 - 15,000@ 20rpm>95 viscosityHigh strengthMoisture resistanceLCD plug and gasket sealDental applicationsGlob top/OLEDOG154-1 26,000 - 34,000@ 5rpm >100 viscosityHigh TgLow ModulusFiber optic/packaging assemblyGlob topLCD gasket sealUV Cure Only ProductViscosity @ 23 C (cPs)

6 TgHardness Nd*Performance FeaturesApplicationsOG198-54 200 - 450@ 100rpm131 viscosityHigh Tg Excellent bond strengthFiber optic assemblyOptical packagingV-groove alignmentOG198-551,200 - 2,000 @ 100rpm>120 viscosityHigh TgFiber optic assemblyOptical packagingV-groove alignmentUV + Thermal Post CureFor Shadow Curing * Cured index measured at Shear Increases Over Time* Shear (kg)Time (hours)* Above test results for OG116-31 show a die shear increase over time after 30 second UV cure. This type of result is representative of the EPO-TEK Epoxy-Based UV Flood LEDP ulsed Hg LampF Style Hg Flood CureF Style Hg Spot CureOG116 OG116-31 OG142 OG142-112 OG142-87 OG142-95 OG146-178 OG154-1 OG159-2 OG198-54 OG198-55 UJ1190 OG146-104 OG178 Cure Time (min).

7 <1 1-3 3-5 5-10 >10 Selecting Best UV Lamps/Cure TimeThin SectionUV passes easily through highly mobile polymer chains, cures SectionUsing a lower intensity, longer wave length and longer cure time, a good cure can be Thin And Thick Sections Can Be Cured With Epoxy UV sAdditional Epoxy UV Epoxy Technology Inc. 2014 EPO-TEK is a registered trademark of Epoxy Technology, IncThe Information, Statements and Recommendations contained herein are based on information, data, reports or tests believed to be reliable. However, Epoxy Technology, Inc. makes no warranty or guarantee of accuracy or completeness in connection therewith, nor, with respect to any Epoxy Technology, Inc.

8 Products involved, any warranty or merchantability or fitness for a particular purpose or use. For additional information, please visit us at: , or email our Technical Services Group at: Epoxy Technology Inc. 14 Fortune Drive, Billerica, MA 01821 Tel: 978-667-3805 Fax: 978-663-9782 EPO-201-02 Innovative Epoxy adhesive Solutions for Over 45 Years Acrylate-Based UV BenefitsEPO-TEK Specialty UV Curing Selector Product Viscosity @ 23 C (cPs)TgHardnessNd*Performance FeaturesApplicationsOG603150 - 250@ 100rpm>70 viscosityUSP Class VI adhesiveFast cureFiber optic componentsMedical implantsOptical assemblyOG653650 - 850@ 100rpm>40 viscosity, green coloredLight blocking propertiesVery fast cure (1-3 sec @ 365nm)

9 RFID glob top OG6753,426@ 100rpm0 viscosityFast cureLow TgFiber optic assemblyLCD laminationUV Cure Only* Cured index measured at 589nmProduct365nm Flood LEDP ulsed Hg LampF Style Hg Flood CureF Style Hg Spot CureOG603 OG653 OG675 Cure Time (min):<1 1-3 3-5 5-10 >10 Selecting Best UV Lamps/Cure TimeExtremely fast cure (seconds)Generally optically clearNo thermal post cure neededNot sensitive to moisture or other bases