Omyabrite 1300 X OM: an excellent way to replace partially titanium dioxide. Coatings UA 2012 Conference

Transcription

1 Omyabrite 1300 X OM: an excellent way to replace partially titanium dioxide Coatings UA 2012 Conference

2 Road map of the presentation Topics Different types of calcium carbonate Properties of the different type of calcium carbonate Reformulation at PVC 65 % to replace partially TiO 2 Blends of different fillers at PVC 70% Comparison Omyabrite / TiO 2 at PVC 80% Summary 2

3 Refractive indices for various materials Substance Refractive index n D Calcium carbonate Mica Barium sulphate 1.64 Lithopones Zinc oxide Zinc sulphide 2.37 Titanium dioxide, anatase 2.55 Titanium dioxide, rutile 2.75 Organic binders Water 1.33 Air 1.0 3

4 What is Omyabrite 1300 X - OM The first fine extender dedicated exclusively for water based deco paints A fine filler made with a brand new process A calcium carbonate with innovating properties Nano Edges 4

5 Processes with Natural Calcium Carbonate Natural CaCO 3 Grinding Precipitation Modification GCC PCC MCC 5

6 Differences of GCC, PCC, MCC GCC PCC MCC Physical Properties Particle Size Distribution Particle Porosity Specific Surface Area Oil Absorption Particle Structure 6

7 Particle structures of natural carbonates Chalk CaCO 3 Marble CaCO 3 Limestone CaCO 3 Dolomite CaMg(CO 3 ) 2 7

8 Particle structures of precipitated calcium carbonates (PCC) Scalenoedric Calcite Rhomboedric Calcite Aragonitic PCC 8

9 Particle structures of modified calcium carbonates (MCC) Brain Roses Caviar Golfballs 9

10 Particle Porosity GCC PCC MCC Total intruded volume cm³/g

11 Omyabrite 1300 X - OM Fineness*: Top Cut (d98%) 9 µm Mean Particle Size (d50%) 2,4 µm *measured by Sedigraph 5100 Optical Properties: Brightness (Ry, C/2, DIN 53163) 95 % CIE L*,a*,b* (DIN 6174) 97,8 / 0,05 / 0.90 Specific Properties: BET surface (ISO 9277) 25 to 30 m 2 /g 11 Oil Absorption 40 g/100g

12 Extenders bring Opacity Binder Air Calcium Carbonate by incorporation of air 12

13 Emulsion test paint formulations Product A 150 /kg A 128 /kg S/A film former FILLER (d = 2.7 g/cm³) Additives Water Total PVC 50.0 % 70.0 % 13

14 Dry Opacity of Different Materials Formulation Pigment-free emulsion paint with PVC 50% GCC Omyacoat 420 MCC Omyabrite 1300 X - OM TiO 2 Dry opacity %

15 Sheen of Different Materials Formulation Pigment-free emulsion paint with PVC 50% GCC Omyacoat 420 MCC Omyabrite 1300 X - OM TiO 2 Sheen %

16 Impact onto Wet Scrub Resistance Formulation PVC 77% Wet scrub resistance ISO µ m Start Start 7% MCC Omyabrite I 1300 X - OM 19% MCC Omyabrite II 1300 X - OM

17 Impact onto Wet Scrub Resistance GCC without pores (Omyacarb ) Polymer chain Porous MCC Roses (Omyabrite ) 17

18 2 fine extenders are designed for titanium dioxide reduction. Each of them has its own efficiency which depends on TiO 2 content and PVC Omyacoat 420 for PVC from 80 to 90% Omyacoat 420 allows a significant reduction of TiO 2 content in semi-gloss emulsion paint Omyabrite 1300 X OM can be used in a large range of TiO 2 content and PVC but is very efficient in matt paints with PVC from 60 to 70% and TiO 2 content from 10 to 20% 18

19 Reformulation example at PVC of 65% Raw material Start MCC Water & additives 39,0 38,7 Titanium dioxide 9,5 6,5 Omyacarb 2 35,0 35,0 Omyabrite 1300 X - OM 3,0 Styrene acrylic binder 16,5 16,8 Total 100,0 100,0 Pigment volume concentration 65,0 % 65,0 % Formulation cost saving: 10% 19

20 Visual comparison of draw downs 9.5% TiO 2 6.5% TiO 2 3.0% Omyabrite 1300X OM Comparison of draw down produced by using a 150µm gap resulting in 60-70µm dry film thickness. Paint on the left: Start: contrast ratio of 90.5% (9.5% TiO 2 and 35% Omyacarb 2) 20 Paint on the right: with Omyabrite : contrast ratio of 92.1% (6.5% TiO 2, 35% Omyacarb 2 and 3% Omyabrite 1300 X - OM)

21 TiO 2 partial replacement at PVC 65% Raw materials Start MCC Water & additives 32, Titanium dioxide Omyacarb Omyacarb Omyabrite 1300 X OM 4.10 Styrene acrylic binder Total Pigment Volume Concentration 65,0 % 65,0 % 21

22 TiO 2 partial replacement at PVC 65% Properties Start MCC Ry over white Ry over black Contrast ratio (%) Yellowness index Sheen PVC (%) Identical optical properties - Formulation cost saving: 11% 22

23 High performance matt emulsion paint: TiO 2 partial replacement by Omyabrite 1300 X OM Raw materials Start MCC Water & additives 30, Titanium dioxide Omyacarb Finntalc M Omyabrite 1300 X OM 7.00 Styrene acrylic binder Total Pigment Volume Concentration 60,0 % 60,0 % 23

24 High performance matt emulsion paint: TiO 2 partial replacement by Omyabrite 1300 X OM Properties Start MCC Ry over white Ry over black Contrast ratio (%) Yellowness index Sheen WSR (200 cycles) WSR (Class) 1 1 PVC (%) Identical optical properties - Formulation cost saving: 20% 24

25 Carbon Footprint in medium pvc matt emulsion paint with similar opacity, brightness and mattness. Value Added to Omya s Customers Reference Reformulation with 20.0% TiO 2 with 11.0% TiO % Omyabrite 1300X 100 Reduction - 15 % 85 25

26 Fillers for Blending Mineral fillers D50% /µm D98% /µm Oil absorption / g/100g Omyacarb Omyacarb Omyacoat Omyabrite 1300X OM TiO

27 Emulsion test paint formulations Product A 150 /kg A 128 /kg S/A film former FILLER (d = 2.7 g/cm³) Additives Water Total PVC 50.0 % 70.0 % 27

28 Overview of all Filler PVC 70% Formulation Pigment-free emulsion paints Opacity /% 90 Omyabrite 1300X Sheen /% Omyacoat Omyacarb Omyacarb Omyacoat 420 Omyacarb Omyacarb 2 Omyacarb Omyabrite 1300X Omyacarb 2 Left axis /% Right axis /% 28 Weight blend ratio

29 Parallel Draw Down Emulsion Test Paint A 128 (PVC = 70%) Opacity as a function of the particle size 29 UF A2 A5 A10

30 Dry different PVC level Formulation Pigment-free emulsion paints Dry 150 µm gap height /% TiO Omyabrite 1300X OM Omyacoat 420 Omyacarb 2 PVC /%

31 PVC ladder Opacity as a function of Pigment Volume Concentration 31

32 Blends versus Dry PVC 80% Dry 150 µm gap height /% TiO 2 Omyabrite 1300X Omyacarb Omyabrite 1300X TiO 2 32 Weight blend ratio

33 Blends versus Dry PVC 80% Dry 150 µm gap height /% TiO 2 Omyabrite 1300X weight-% TiO weight-% TiO 2 85 Omyabrite 1300X plus TiO weight-% TiO Omyacarb Omyabrite 1300X TiO 2 33 Weight blend ratio

34 Blends versus Wet PVC 80% Wet 150 µm gap height /% 100 TiO 2 Omyabrite 1300X 75 Omyabrite 1300X plus TiO weight-% TiO weight-% TiO weight-% TiO Omyacarb Omyabrite 1300X TiO 2 34 Weight blend ratio

35 Costs versus PVC 80% 150 µm gap height /% DRY OPACITY WET TiO 2 Omyabrite 1300X Omyabrite 1300X weight-% TiO % 60-6% EUR/ton

36 Summary of the presentation Omyacoat 420 is dedicated to cheap emulsion paints formulations with low binder and titanium dioxide content and with PVC from 80 to 90%. Omyabrite 1300 X OM has a range of high efficiency at PVC from 60 to 70% and allows : - a weight by weight titanium dioxide partial replacement - while maintaining a high level of optical and mechanical properties - and having a close level of wet opacity of titanium dioxide Omyabrite 1300 X OM allows also to replace most extenders which helps to rationalization Omyabrite 1300 X OM is the closest extender to applicative properties of titanium dioxide and more economic 36

37 Final Message If you feel overrun by paint topics call for help! 37

38 Thank you very much for your attention! Omya [the natural benefit] 38