The Use of Light Stabilizers in Coatings with Acid Catalyzed - Quartz ...

The Use of Light Stabilizers inCoatings with Acid CatalyzedYung-Chi YangSupervisorTechnology DepartmentSpecialty Chemicals Division ,Everlight Chemical Industrial CorporationTaiwan2010/06/24Everlight Chemical Industrial Corporation

Why Coatings need LightStabilizer?UV-lightMetalProtective CoatingSubstrate(metal,wood,plastic)DegradationExamples of coating degradation.. ?WoodWithoutLight Stabilizers• cracking• chalking• gloss loss• delamination• color changeEverlight Chemical Industrial Corporation 3

Solar Light100 200 300 400 500 600 700 800 900 1000 l [nm]…UV-CUV UVB Avisible light (400nm-760nm) 71%ultraviolet (UV) rays(100nm-400nm) 7%ultra red rays(760nm-50um) 22%Everlight Chemical Industrial Corporation 4

Everlight’s UV-Absorbers forCoatingsNNNHONNNNNNOHCH 2 CH 2 CO(OCHOH2 CH 2 ) 6~7 OH+EVERSORB ® 74 (UVA)PowderNNNHOEVERSORB 76,76HPowderCH 2 CH 2 CO(O C H 2 CH 2 ) 6~7 OHPEG300EVERSORB ® 80/80C (UVA)LiquidEVERSORB ® 80 : General spec.,Iodine Index : 5-7EVERSORB ® 80C :High-spec.,Iodine Index

Everlight’s HALS for CoatingsH 3 CCH 3OH 3 C N O C (CH 2 ) 8 C O N CH 3H 3 C CH 3H 3 CCH 3+OH 3 C N O CH 3 C CH 3O(CH 2 ) 8OCH 3 C CH 3H 3 C CH 3OCH 3EVERSORB ® 93/93Capplied in non-acidic systemLiquidN-R Head Group –pK b = 5-6O CH 2HCO.OC 4H 9CO.OHEVERSORB 60,60HpowderHNCH 3N CH 3EVERSORB ® 93 : General spec.:APHA 50-70EVERSORB ® 93C:High-spec.:APHA

Eversorb for Acidic CoatingsEverlight Chemical Industrial Corporation 9

What Cause HALS lose efficiency• In general, the HALS has low basic and easyto react with acidic material .1R=-H-CH3R1NRRRN1[O]+[Acid] [H ]HRNO .R=O+ROHEverlight Chemical Industrial Corporation 10R .RNOROO .To cause HALS function lose efficiencyThe acid function lose efficiencyR

What Happen to HALS reacts withacidic material ?Cause HALS function to lose efficiencyCan’t protect your products after exposureColor ChangeAlkyd Resin(AK) AK+1% N-R HALSEverlight Chemical Industrial Corporation 11

A Liquid NOR HALSEVERSORB ® 95C 8H 17.ONHO.CO.(CH 2) 8.CO.OHNO.C 8H 17Recommended for acid systemsLiquidHighly soluble in wide range of solventsN-OR Head Group –pK b = 9-10Everlight Chemical Industrial Corporation 12

Eversorb ® 95-A Liquid NOR HALSDon’t cause HALS function to lose efficiencyCan protect your products after exposureAlkyd Resin(AK) AK+1% N-OR HALSEverlight Chemical Industrial Corporation 13

Light Stabilizers Offered byEVERLIGH for acidic Coatings -Eversorb ®ChemicalsclassRecommendSystemFunctionsProductsAppearanceEversorb95HALSacid catalyzed,oxidative dryingand nitro cellulosecoatingsPrevent discolorationof pigmented coatingsand enhanced glossretentionEversorb85Blend UV-AbsorberPlus HALSacid catalyzed,oxidative dryingand nitro cellulosecoatingsPrevent discolorationof clear coatings andenhanced glossretentionEVERSORB 95 0.5 - 3 % (based on solidcontent)EVERSORB 85 1 - 3 % (based on solidcontent)Everlight Chemical Industrial Corporation 14

Eversorb 95- Enhanced Color Retentionfor Acidic CoatingsResin : Nitrocellulose(NC) Exposure Time : 1000 hoursTest Methods :ASTM G154-2(Q-U-V with UVB-313 light bulb )Dosage of Light Stabilizer: 2% Eversorb 80 and 1% Eversorb 952% Eversorb 80+1% Eversorb 952% Eversorb 80Blank0 2 4 6 8 10 12 14 16 18 20 22 24Delta difference color (ΔE)12011010090807060504030201002% Eversorb 80+1% Eversorb 952% Eversorb 8060o GlossBlankblank 2% Eversorb 80 2% EV- 80+ EV- 95Everlight Chemical Industrial Corporation 15

Eversorb 85- Enhanced Color Retentionfor Acidic CoatingsResin : Nitrocellulose(NC) Exposure Time : 1000 hoursTest Methods :ASTM G154-2(Q-U-V with UVB-313 light bulb )Dosage of Light Stabilizer: 2% Eversorb 852% Eversorb 85Blank0 2 4 6 8 10 12 14 16 18 20 22 24Delta difference color (ΔE)12011010090807060504030201002% Eversorb 8560o GlossBlankblank2% Eversorb 85Everlight Chemical Industrial Corporation 16

Eversorb Light Stabilizers forEnvironmental Friendly CoatingsEverlight Chemical Industrial Corporation 17

Eversorb AQ Series for Water-borne CoatingsEverlight Chemical Industrial Corporation 18

Waterborne UV Absorbers obstacleLiquid Hydroxyphenyl-benzotrialzole (UVA)1.Dispersed test in AcrylicWaterborne Resin(5g UVA/100g -AcrylicWaterborne Resin)filter2.Dispersed test in PUWaterborne Resin(5g UVA/100g -PUWaterborne Resin)filterLiquid benzotrialzole is not easy to disperse in waterborneresinEverlight Chemical Industrial Corporation 19

Eversorb Light Stabilizers are suitablefor Waterborne CoatingsLiquid performance products (EVERSORB AQ Series)1.Dispersed test in AcrylicWaterborne Resin(5g Ev.-AQ1/100g -AcrylicWaterborne Resin)filter2.Dispersed test in PUWaterborne Resin(5g Ev.-AQ1 /100g -PUWaterborne Resin)filterLiquid Ev.-AQ1 is easy to disperse in waterborne resinEverlight Chemical Industrial Corporation 20

Light Stabilizers Offered byEVERLIGH for Waterborne Coatings -Eversorb ®ChemicalsclassRecommendSystemFunctionsProductsAppearanceEversorbAQ1Blend UV-AbsorberPlus HALS-Nonionic-Amphoteric-AnionicPrevent discolorationof clear coatings andenhanced glossretentionEversorbAQ2Blend UV-AbsorberPlus HALS-CationicPrevent discolorationof clear coatings andenhanced glossretentionEversorbAQ3UV-Absorber-Nonionic-Amphoteric-AnionicPrevent discolorationof clear coatingsEversorbAQ4HALS-Nonionic-AnionicPrevent discolorationof pigmented coatingsand enhanced glossretentionEVERSORB AQ series 0.5 - 3 % (based on solid content)Everlight Chemical Industrial Corporation 21

Eversorb AQ1/AQ3- Enhanced Color & GlossRetention for PU Waterborne Clear WoodCoatingsResin : Polyurethane(PU) Waterborne Clear CoatingExposure Time : 1000 hours Additives:EVERSORB AQ1& AQ3Test Methods :ASTM G154-2 (Q-U-V with UVB-313 light bulb )Fig.1-1 Delta difference color (ΔE)Fig.1-2 60o Gloss0 hrs originalFig.2-1 Delta difference color (ΔE)0 hrs Fig.2-2 60o Gloss 90original1000 hrs13.1Control 1000 hrs53Control1000 hrs 2 3%Eversorb AQ11000 hrs833%Eversorb AQ11000 hrs1.23%Eversorb AQ31000 hrs753%Eversorb AQ30 2 4 6 8 10 12 14 16difference color (ΔE)20 30 40 50 60 70 80 90 10060 o GlossΔE=13.1G=53ΔE=13.1ΔE=2G=53 G=83ΔE=1.2G=75After TestBefore TestCompare EV-AQ1 with EV-AQ3, if we want to enhance color retention, EV-AQ3 is better than EV-AQ1, If we want to enhance gloss retention, EV-AQ1 is better than EV-AQ3.Everlight Chemical Industrial Corporation 22

Eversorb AQ4- Enhanced Color Retention forAcrylic Waterborne Pigmented CoatingsResin : Acrylic(AC) Waterborne CoatingPigmented : Carmine red NO. 420-25Exposure Time : 2000 hours Additives:EVERSORB AQ4Test Methods :ASTM G154-2 (Q-U-V with UVB-313 light bulb )Fig.2-1 Delta difference color (ΔE)0 hrs original0 hrsFig.3-2 60o Gloss50original1000 hrs5.8Control1000 hrs21Control1000 hrs1.11% Eversorb AQ41000 hrs381% Eversorb AQ41000 hrs0.763% Eversorb AQ41000 hrs423% Eversorb AQ40 1 2 3 4 5 6difference color (ΔE)10 15 20 25 30 35 40 45 50 55 6060 o GlossΔE=5.8G=21ΔE=0.76G=42After TestBefore TestEverlight Chemical Industrial Corporation 23

Eversorb UR Series for UV Curable CoatingsEverlight Chemical Industrial Corporation 24

Conflicts of UV Light’s Dual RoleUV LightUVPhoto initiatorsLightStabilizersUV irradiation would initiatepolymerization andphoto degradation processesprevent UV radiation fromreaching to coatingsEverlight Chemical Industrial Corporation 25

Light Stabilizers Offered byEVERLIGH for UV Curable Coatings -Eversorb ®RecommendPhoto initiators(PI)SystemRecommendDFT(μm)FunctionsProductsAppearanceEversorbUR 210•PI-184(alpha-HydroxyKetone) < 40•NO impact on thecuring speed•Improve coatingdurabilityEversorbUR 220•PI-184/1173(alpha-HydroxyKetone)•PI-TPO( Mono AcylPhosphine)> 40•NO impact on thecuring speed•Improve coatingdurabilityEVERSORB UR series 0.5 - 3 %Everlight Chemical Industrial Corporation 26

Eversorb UR210/220-Not affect curingspeed for UV Curable Clear CoatingsExperiment procedureFormulation : Epoxy Acrylate 38% w/wTPGDA24% w/wHDDA38% w/walpha-Hydroxy Ketone (photo initiator) 5%Curing condition: 1x150w/cm 2 (High pressure Hg lamp))Curing Method: WWR on coated Leneta chartsEversorb UR210 forEversorb UR220 forDry film thickness(DFT) :10 μm Dry film thickness(DFT) :140 μmBlank1% Eversorb UR2102% Eversorb UR2103% Eversorb UR2100 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16Min. energy to reach curing need (J/cm2)Blank1% Eversorb UR2202% Eversorb UR2203% Eversorb UR2200 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16Min. energy to reach curing need (J/cm2)Everlight Chemical Industrial Corporation 27

Eversorb UR210– Prevent Discolorationfor UV Curable Clear CoatingsExperiment procedureModel: Q-U-V Accelerated Weathering TesterTest Model: ASTM G154-2(QUV with UVB-313 light bulb )Test Time: 100 hoursMaterial:MetalDry film thickness(DFT) :40 μm3% Eversorb UR2102% Eversorb UR2101% Eversorb UR210Blank0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30Delta yellowness index ( △ YI)blank3% Eversorb UR210Everlight Chemical Industrial Corporation 28

Eversorb UR220 – Prevent Discolorationfor UV Curable Clear CoatingsExperiment procedureModel: Q-U-V Accelerated Weathering TesterTest Model: ASTM G154-2(QUV with UVB-313 light bulb )Test Time: 100 hoursMaterial: woodDry film thickness(DFT) :140 μm3% Eversorb UR2202% Eversorb UR2201% Eversorb UR220Blank0 1 2 3 4 5 6 7 8 9 10 11 12Delta difference color ( △ E)blank 3% Eversorb UR220Everlight Chemical Industrial Corporation 29

Conclusions1.Everlight chemical has full series of light stabilizers foracidic (Eversorb 95/85), waterborne (Eversorb AQ series)and UV curable (Eversorb 210/220) coatings toprevent degradation efficiently, and enhance the value ofdurability of coating products.2. According to customer’s requirements, you have thechoices of our best products to enhance your productdurability on weathering.Everlight Chemical Industrial Corporation 30

Eversorb Light Stabilizers forEnvironmental Friendly CoatingsEversorb AQ SeriesWater-borneCoatings✔✔UV-CurableCoatingsHighSolidCoatingsHigh Solid(Acid)CoatingsEversorb UR Series✔✔Eversorb 95 ✔ ✔ ✔ ✔✔Eversorb 85 ✔ ✔ ✔ ✔✔Eversorb 60,60HEversorb 74 ✔ ✔Eversorb 76,76HEversorb 80,80C ✔ ✔ ✔✔Eversorb 81/82 ✔ ✔ ✔✔Eversorb 83 ✔ ✔ ✔✔Eversorb 84 ✔ ✔ ✔✔Eversorb 93,93C ✔ ✔ ✔✔PowderCoatingsEverlight Chemical Industrial Corporation ✔✔:recommended , ✔: can be used 31✔✔✔✔

Everlight Group in BriefFounded in 1972• Listed in Taiwan Stock Exchange since 1988• 1,200 Employees in world-wide• Revenue: US $190 M (2007) 19%YoY GR• Capital: US $130 M (2007)• Management Systems:• 1994 ISO 9001 Quality Management System• 1996 ISO 14001 Environmental Management System• 1999 Six Sigma• 2001 OHSAS 18001 Occupational Health and Safety Assessment System• 2002 U.S. FDA cGMP inspected (Misoprostol API)• 2007 QC 080000 Hazardous Substance Process Management SystemEverlight Chemical Industrial Corporation 32

Everlight products portfolios• Color ChemicalsDyes (Textiles,Leather, Metal, Paper, Food ……)Functional dyes ( IR dye , DSSC Dye, Dichromic Dye)Printer consumables (Digital printing ink, Color toners )• Specialty ChemicalsUV absorbers (Plastics, Resins, Adhesives, Coatings,Cosmetics, Textiles and Optoelectronics)• Active Pharmaceutical IngredientsProstaglandin APIs (Misoprostol, PGE1,…)Cardiovascular APIs (Felodipine)Intermediates (NEPA/NEPA-NCA)• Electronic ChemicalsPhotoresists,(IC, LCD, PCB, PDCR)Developer and processing chemicals (IC, LCD)Polishing Slurry ( wafer polishing)• Nano-materialsfunctional Coatings for Anti-reflective , Anti-finger prints,Anti-Fog , Anti-Glare , Self cleaning , Anti-microbials,…...Everlight Chemical Industrial Corporation 33

Global Marketing, Sales, &Technical ServicesEverlight Chemical Industrial Corporation 34

Investment in Innovation• 120 Researchers (morethan 10% of totalemployment), including17 PhD’s and 58 Masters)• Invests more than 4% ofRevenue on research• 51 U.S. Patents granted(105 countries), 37pendingEverlight Chemical Industrial Corporation 35

UV Absorbers Manufacturing Factory• The 2 ndlargestBenzotriazolemanufacturerin the worldEverlight Chemical Industrial Corporation 36

Eversorb ® Add Value to Your ProductsEverlight Chemical Industrial Corporation 37

Thank you for your attentionPlease visit our homepage:http:/www.everlight-uva.com.twhttp:/www.everlight-uva.comE-mail:gigi@ecic.com.twTEL:886-3-4837682 Ext.813ASIA PACIFIC COATING SHOW 2010Everlight Chemical Industrial Corporation 38