What is the resin's nature? Solvent-free, hard-elastic, UV-curable polyurethane dispersion. Technical data: Solids content: 34-36% ph-value: 7.5-9.0 Viscosity: 20-200 mpas MFFT: approx. 0 C Features: Excellent chemical and stain resistance in transparent and pigmented systems High scratch resistance Non yellowing High abrasion resistance Good wetting of pigments and matting agents What is the suggested field of application? Clear and pigmented wood coatings On site UV coatings Coatings on PVC Dual cure coatings page 1 of 7
Suitable raw materials Defoamers: Byk 024 (BYK Chemie) Byk 028 (BYK Chemie) Tego Airex 902 W (Evonik Tego Chemie) Tego Foamex 822 (Evonik Tego Chemie) Substrate wetting agents: Byk 346 (BYK Chemie) Tego Wet 280 (Evonik Tego Chemie) Dow Corning 67 (Dow Corning) Photoinitiators: Irgacure 184 (BASF) Irgacure 819 (BASF) Irgacure 500 (BASF) Matting agents: Acematt TS 100 (Evonik) Ultralube D-816 (Keim Additec) Ceraflour 920 (BYK Cera) Rheology control additives: DSX 1514 (BASF) DSX 2000 (BASF) Rheolate 288 (Elementis) Tego ViscoPlus 3000 (Evonik Tego Chemie) Tego ViscoPlus 3030 (Evonik Tego Chemie) page 2 of 7
Formulation Proposal UV 220-01 wood and plastic coatings, white 1 ALBERDINGK LUX 220 VP 61.50 Alberdingk Boley 2 Tego Foamex 822 0.60 Evonik Tego Chemie 3 Tego Airex 902 W 0.30 Evonik Tego Chemie 4 Byk 346 0.30 BYK Chemie 5 Pigment paste CT-231* 25.00 Quantity of TiO 2 : 17.94% 6 Dowanol DPM 2.90 Dow Chemical 7 Water (deion.) 6.70 8 Irgacure 500 1.00 BASF 9 Irgacure 819 DW 1.20 BASF 10 Rheolate 288 (50%)** 0.50 Elementis Premix pos. 6 + 7 before use Curing Conditions: Pre-drying: Feed: UV-curing: 5-10 min at 50 C, convection dryer 5 m/min 1 x Ga-doped lamp per 120 W/cm 1 x Ga-doped + Hg-doped lamp, each per 120 W/cm For additional crosslinking we suggest to add 10.0% of following blend of polyisocyanate on the total formulation: Bayhydur XP 2487/1 in MPA = 80:20 (pot life after addition: approx. 6h) page 3 of 7
* Pigment Paste Formulation CT-231 1 Water (deion.) 12.90 2 Surfynol CT-231 7.50 Air Products 3 Tego Foamex 825 0.40 Evonik Tego Chemie 4 Kronos 2190 75.00 Kronos Titan 5 Water (deion.) 4.20 Disperse for 20 min. under high shear rate ** Rheology modifier 1 Rheolate 288 50.00 Elementis 2 Ethylendiglycol (EDG) 35.00 BASF 3 Water (deion.) 15.00 page 4 of 7
Chemical Resistance* UV 220-01 wood and plastic coatings, white Test Chemicals Test Duration Test Results** Ethanol (48%) 1h 5 NH 4 OH (10%) 1min 5 Water (deion.) 16h 5 Coffee (4%) 16h 5 Tea (1%) 16h 5 Red wine 5h 4 Cola 16h 5 Na 2 CO 3 (10%) 2min 5 1h 5 Fatty acid 5h 5 16h 5 **5 = best / 0 = worst *tested according to EN 12720 the fatty acid test simulates the resistance of the film to human hand fat or hand lotions page 5 of 7
Formulation Proposal UV 220-02 wood and plastic coatings, yellow 1 ALBERDINGK LUX 220 VP 73.20 Alberdingk Boley 2 Tego Foamex 822 0.60 Evonik Tego Chemie 3 Tego Airex 902 W 0.30 Evonik Tego Chemie 4 Byk 346 0.30 BYK Chemie 5 Pigment paste AQ 810 12.70 Quantity of yellow: 7.00% Rolston Color & Coatings 6 Dowanol DPM 2.90 Dow Chemical 7 Water (deion.) 7.60 8 Irgacure 500 1.00 BASF 9 Irgacure 819 DW 1.20 BASF 10 Rheolate 288 (50%)* 0.20 Elementis * Rheology modifier Premix pos. 6 + 7 before use 1 Rheolate 288 50.00 Elementis 2 Ethylendiglycol (EDG) 35.00 BASF 3 Water (deion.) 15.00 Curing conditions: Pre-drying: 10 15 min at 50 C, convection dryer Feed: 5 m/min UV-curing: 1 x Ga-doped lamp per 120 W/cm page 6 of 7
Chemical Resistance* UV 220-02 wood and plastic coatings, yellow Test Chemicals Test Duration Test Results** Ethanol (48%) 1h 4 NH 4 OH (10%) 1min 5 Water (deion.) 16h 5 Coffee (4%) 16h 4 Tea (1%) 16h 5 Red wine 5h 5 Cola 16h 5 Na 2 CO 3 (10%) 2min 5 1h 5 Fatty acid 5h 5 16h 5 **5 = best / 0 = worst *tested according to EN 12720 the fatty acid test simulates the resistance of the film to human hand fat or hand lotions page 7 of 7