UV LED CingUV LED Curing ADDITOLLED 01 1 Dr. X. Deruyttere, October 2010 April 2011 Agenda Introduction The ADDITOL LED 01 Approach lApplication Program Clear Coatings Reactivity y LED Line settings (Distance LED to substrate, LED orientation) Coating Thickness Formulation Viscosity & Dilutiony Dosage ADDITOL LED 01 Gloss Yellowing upon cureg p Stain resistance Pigmented Coatings Conclusions 2 Conclusions Introduction Value Proposition UV LED Allows coating of heat sensitive surfaces Instant on, instant off LED Curing, The LED Transformer Concept Ability to coat small surfaces No ozone generation p No ozone generation Others 3 Could enable new applications which up to now were not feasible with standard high powered lamps. Introduction The first trials EBECRYL 84658585 DPGDA1010 ADDITOL TPO55 Inert AtmosphereYesNo Reactivity at Finger Nail Resistance (m/min) 804x5 NOK Application : 30 by Barcoater on Leneta paper Curing : LED 8W/cm2395 nm, 1cm distance from substrate to LED Reactivity at Finger Nail Resistance (m/min) 804x5 NOK Curing : LED 8W/cm 395 nm, 1cm distance from substrate to LED (perpendicular orientation) 4 Surface curing is an issue ! The ADDITOL LED 01 Approach TfUVbl fliiUV LEDblTransform a UV curable formulation into a UV LED curable formulation by replacing part of the oligomer by a booster resin. This led to the development of ADDITOL LED 01. The approach is also valid for other low energy curing UV technologies (e.g. UVA curing). 5 The ADDITOL LED 01 Approach Example EBECRYL 84658565EBECRYL 84658565 DPGDA1010 ADDITOL LED 0120 ADDITOL TPO55 Reactivity Finger Nail Resistance (m/min) 4x 5 NOK1x 5 Application: 30m by Barcoater on Leneta paper Curing: LED 8W/cm2395 nm, 1cm distance from substrate to LED (perpendicular orientation) O 0 (pp) 6 ADDITOLLED 01 is a co-resin, used as booster for surface cure. The ADDITOL LED 01 Approach ADDITOL LED 01 Physical Data AppearanceLiquid Viscosity, 25C, mPa.s210 Colourpale, pinkish Boiling point 200C Vapour Pressure 100C Cleveland Open Cup Stability 10d 60C 7 The ADDITOL LED 01 Approach EBECRYL8254 (6 f)7555 ADDITOL LED 01 Compatibility EBECRYL8405 (4 f)45 EBECRYL8465 (3 f)45 EBECRYL8807 (2 f)45 HDDA101010 ADDITOLLED 012040404040 ADDITOLTPO55555 ADDITOLITX0,10,10,10,10,1 Fingernail resistant (m/min)1 x 51 x 101 x 251 x 151 x 20 Application : 10m on Leneta Cured with 8W /cm2395nm LED at 2cm substrate lamp distance Good Compatibility with selected Urethane Acrylates The ADDITOL LED 01 Approach EBECRYL37006545 ADDITOL LED 01 Compatibility EBECRYL8007555 HDDA10101010 ADDITOLLED 0120402040ADDITOLLED 0120402040 ADDITOLTPO5555 ADDITOLITX0,10,10,10,1 Fingernail resistant (m/min)1 x 351 x 50 40m/min with 40 parts ADDITOLLED 01 Application Program EBECRYL 8465 (3functional UA)57 Reactivity Oligomer Functionality DPGDA18 EBECRYL 8254 (6functional UA)75 ADDITOL LED 012020ADDITOL LED 012020 IRGACURE 210055 Viscosity (25C, mPa.s)20001400 Fingernail resistant (m/min)1x 101x 40 Application : 30 on Leneta Cured with 8W /cm2395nm LED at 1cm substrate lamp distanceCured with 8W /cm2395nm LED at 1cm substrate lamp distance, LED “inline” with the substrate (22cm) hfbdh 18 Higher surface reactivity is obtained with higher functional oligomers. Application Program Reactivity Summary Effect of Increasing on formulation reactivity Coating thickness DPGDA dilution (*) ADDITOL LED 01 Oligomer Funct. Formulation Higher reactivity Lower (*) Higher functional diluting oligomers might have different impact on the formulation reactivity 30hdll bh ( ) Higher functional diluting oligomers might have different impact on the formulation reactivity. 19 A 30m hard coating will be easier to cure than a 5m flexible coating Agenda Introduction The ADDITOL LED 01 Approach lApplication Program Clear Coatings Reactivity y LED Line settings (Distance LED to substrate, LED orientation) Coating Thickness Formulation Viscosity & Dilutiony Dosage ADDITOL LED 01 Gloss Yellowing upon cureg p Stain resistance Pigmented Coatings Conclusions 20 Conclusions Application Program Clear Coatings Gloss EBECRYL 846560 DPGDA40DPGDA40 ADDITOL LED 0120 IRGACURE 21005 Syloid 162C8 Acematt TS1002 Lancowax PP13622 Viscosity, 25C, mPa.s2150 Fingernail resistant (m/min)2 x 5 Gloss at 60 (%)65Gloss at 60 (%)65 Application : 3035 on Leneta Cured with 8W /cm2395nm LED at 1cm substrate lamp distance, 21 LED “inline” with the substrate (22cm) Difficult to achieve low gloss given the low T cure Application Program Clear Coatings Yellowing after UV LED cure Hg (80W/cm)LEDLED EBECRYL 8465858565 DPGDA101010 ADDITOL LED 0120 ADDITOL BCPK5ADDITOL BCPK5 ADDITOL TPO55 Yellowing, bvalue 24 h (initial)0 (1.4)/0.5 (2.8) Fingernail resistant (m/min)1x 254x5 NOK1x 5 Application : 30 by Barcoater on Leneta paper Curing : LED 8W/cm2395 nm, 1cm distance from substrate to LED (perpend