Effetti innovativi e funzionali nel coating

Transcription

1 Effetti innovativi e funzionali nel coating Merck Effect Pigments in evereday life Politecnico di Torino 13 Maggio 2014 Stefano Corrado - Account Manager Coatings Merck Spa Milano

2 Introduction to Pigments Substances which are used as colorants and are insoluble in the application medium. DIN 55943: Insoluble substances with corrosion inhibiting or electromagnetic properties are also pigments Inorganic color pigments: e.g. Titanium dioxide, Carbon black, Iron oxides, Metallics, Mica pigments Organic color pigments: Azo pigments Polycyclic pigments (e.g. phthalocyanine, perylene) Functional pigments: e.g. Zinc phosphate (anti-corrosive) Antimony-doped tin dioxide (conductive pigment) Colorants which are soluble in the application medium are called dyes 2

3 Introduction to Effect 3

4 pigment classes absorption pigments Specific color by light absorption Hue/color does not change with angle Color comes from the surface metal effect pigments Metallic gloss by light reflection Brightness strongly depends on angle pearlescent pigments Specific color, gloss and color flop due to interference effects Hue/color may have a strong dependence on angle Colors comes from the depth 4

5 pearlescent pigments interference color layer with a high refractive index transmitted part of the light transparent substrate with laminar structure 5

6 Interference effect 40-60nm 60-80nm nm nm nm 6

7 Different particle size 7

8 Different particle size Particle size distributions M < 15 µm low gloss, very good hiding power F 5-25 µm silky gloss, good hiding power N µm pearlescent, hiding S µm shimmering, low hiding power L µm glittering, non-hiding 8

9 Advantages of Effect Pigments versus Extended Optical Films easy to incorporate in all relevant application systems many possibilities to blend effect pigments with other pigments textural effects caused by single particles different particle sizes vary optical and functional effect easy to manufacture with acceptable costs environmentally save to produce flexibility to equip surfaces with the desired effects by e.g. spraying, printing, extruding 10

10 Overview of Pearlescent Pigments Metal oxide Mica Natural raw material mica limited control of the substrate properties Metal oxide Al 2 O 3 Substrate is produced synthetically exact control of the substrate properties Metal oxide SiO 2 Substrate is produced synthetically exact control of the substrate properties Metal oxide Borosilicate Substrate is produced synthetically exact control of the substrate properties SiO 2 11

11 Merck s effect toolbox natural mica substrate optimized natural mica substrate Al oxide substrate silica substrate glass flake substrate pearl luster effect pigments effect pigments designed for high chroma crystal effect coatings pigments multicolor effect pigments high sparkle effect pigments meoxal Luminous metal effect pigments 12

12 Coatings market applications Automotive OEM Coatings Automotive Repair Coatings Powder Coatings (architectural panels, window and door frames,furniture etc.) Plastic Coatings (for telecomunication and phono articles, automotive parts, sport utilities) Industrial Coating (metal forniture, cooking ware, domestic appliances etc.) Coil Coating (architectural building) Dispersion paints (decorative paints for indoor and outdoor on buildings) Leather Coatings (shoe, handbag, interior design and automotive interior) Wood Coatings (paint for wood indoor and outdoor, kitchen design and forniture) Artist paint (paint for professional and hobby artist) 13

13 Cross-section through a Weather Resistant Pearl Lustre Pigment weather resistance metal oxide mica Additional coating for external applications : Iriodin Xirallic Colorstream Florida Test Humidity test - UV Light - TiO2 photo-activity 14

14 Basic Rules for Formulating Pearl pigments can be incorporated in all coating systems. Use the most transparent formulation possible: the less opacity = the better is the effect, = lower is the concentration Opaque formulations = higher pigment levels. An excess of light scattering destroys pearlescence. Avoid grinding and milling of pearlescent pigments: If mechanical stress on the pigments is too high, the pigment particles might break or the metal oxide layer might be removed from the mica platelet, resulting in loss of luster and color change. Pearlescent pigments disperse well without grinding due to theirlarge particle size and the virtual absence of agglomeration. 15

15 Sedimentation Mica/Metal oxide pigments have a density of approx. 3g/cm 3 so they have a tendency to settle. Easy re-dispersion (by simple stirring) is the most important requirement (no formation of a hard layer/cake) Solutions Continual movement of the paint system during processing Use of suitable additives for easy re-dispersion, which have no negative effect on the pearl lustre. 16

16 Orientation: Influence of the paint system on the appearance wet film dry film with low shrinking dry film with high shrinking parallel orientation = good effect 17

17 in the transportation market 18

18 in the transportation market 19

19 in the transportation market 20

20 in the transportation market 21

21 Merck s effect toolbox natural mica substrate optimized natural mica substrate Al oxide substrate silica substrate glass flake substrate pearl luster effect pigments effect pigments designed for high chroma crystal effect coatings pigments multicolor effect pigments high sparkle effect pigments meoxal Luminous metal effect pigments 22

22 Improvement of color saturation with the Merck Color Space Concept Merck Color Space is a concept based on color metric calculations for a given number of pigments that each possess at least one interference layer. The calculations help to determine their optimal hue angle for the largest possible gamut. 23

23 color space 24

24 in the transportation market 25

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32 33 in the transportation market

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36 in the transportation market 37

37 in the transportation market 38

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39 in the transportation market 40

40 in the transportation market 41 Coatings

41 in the transportation market 42

42 meoxal in the transportation market 43

43 meoxal in the transportation market 44

44 45 stunning architecture

45 applications dispersion paint powder coating coil coating wood coating 46

46 in dispersion paint 47

47 in dispersion paint 48

48 in powder coating Frankfurt am Main, Germany / Main Tower 49

49 in powder coating Esslingent, Germany / Festo Building 50

50 in powder coating Darmstadt, Germany / Merck Pigments Building 51

51 in powder coating Barcelona, Spain / Torres Fira / Arch. Toyo Ito 52

52 in coil coating Scottsdale, Arizona, USA / Appaloosa Library / DWL Architects 53

53 in coil coating Singen, Germany / School Cafetaria / Riede Architects 54

54 in coil coating Bucine, Italy / Visualplex Company 55

55 in coil coating 61 Ananti Club, Seoul, South Korea / Ken Min Architects 56

56 in coil coating Chongquing Zhong Yu Aiduhui - China 57

57 in wood coating 58

58 consumer & lifestyle markets household appliances consumer goods sports goods fashion 59

59 for household appliances 60

60 for household appliances 61

61 for household appliances 62

62 for consumer goods 63

63 for consumer goods 64

64 for plastic coated consumer goods 65

65 for plastic coated consumer goods 66

66 for leather coated sports goods 67

67 for sports goods 68

68 meoxal for sports goods 69

69 for sports goods 70

70 for leather fashion 71

71 for leather fashion 72

72 meoxal for leather fashion 73

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82 Merck SpA Via XI Febbraio Vimodrone MI Account Managers Coatings Performance Materials Pigments & Cosmetics Business Field Decorative Materials Stefano Corrado mobile: