32 Effect pigments
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Gerhard Pfaff
Abstract
Metal effect pigments and special effect pigments are the two classes of effect pigments. Effect pigments, also termed luster pigments, consist of μm-sized thin platelets that show strong lustrous effects when oriented in parallel alignment in application systems, such as coatings, plastics, printing inks, and cosmetic formulations. Metal effect pigments show a metal-like luster after parallel orientation in the application medium, which has its origin in reflection of light at the surface of the platelet-like metal particles. Special effect pigments, on the other hand, consist of transparent flakes with a high refractive index. Oriented in a parallel way, most of them show a characteristic pearl luster generated by multiple reflections. Many of the special effect pigments are classified as interference pigments because their color generating mechanism is based completely or predominantly on the phenomenon of interference.
Abstract
Metal effect pigments and special effect pigments are the two classes of effect pigments. Effect pigments, also termed luster pigments, consist of μm-sized thin platelets that show strong lustrous effects when oriented in parallel alignment in application systems, such as coatings, plastics, printing inks, and cosmetic formulations. Metal effect pigments show a metal-like luster after parallel orientation in the application medium, which has its origin in reflection of light at the surface of the platelet-like metal particles. Special effect pigments, on the other hand, consist of transparent flakes with a high refractive index. Oriented in a parallel way, most of them show a characteristic pearl luster generated by multiple reflections. Many of the special effect pigments are classified as interference pigments because their color generating mechanism is based completely or predominantly on the phenomenon of interference.
Chapters in this book
- Frontmatter I
- Preface V
- Contents VII
- List of contributors XV
- 23 Color measurement 407
- 24 Cyanine dyes 465
- 25 Diarylethene dyes 503
- 26 Diketopyrrolopyrrole (DPP) pigments 525
- 27 Dioxazine pigments 535
- 28 Disazo (Bishydrazone) condensation pigments 543
- 29 Disazo (Bishydrazone) pigments based on acetoacetanilides 555
- 30 Disazo (Bishydrazone) pigments based on pyrazolones 571
- 31 Dyes: quantum chemical calculation of electronic spectra 577
- 32 Effect pigments 605
- 33 Fluorescence and fluorescent dyes 611
- 34 Fulgide dyes 651
- 35 Hemicyanine dyes 671
- 36 Hemioxonol dyes 685
- 37 Historical pigments, dyes and binders 691
- 38 Indophenol and related dyes 749
- 39 Inorganic luminescent pigments 765
- 40 Iron blue pigments 777
- 41 Iron oxide pigments 783
- 42 Merocyanine dyes 799
- 43 Metal complex pigments 815
- 44 Metal effect pigments 829
- Index 849
Chapters in this book
- Frontmatter I
- Preface V
- Contents VII
- List of contributors XV
- 23 Color measurement 407
- 24 Cyanine dyes 465
- 25 Diarylethene dyes 503
- 26 Diketopyrrolopyrrole (DPP) pigments 525
- 27 Dioxazine pigments 535
- 28 Disazo (Bishydrazone) condensation pigments 543
- 29 Disazo (Bishydrazone) pigments based on acetoacetanilides 555
- 30 Disazo (Bishydrazone) pigments based on pyrazolones 571
- 31 Dyes: quantum chemical calculation of electronic spectra 577
- 32 Effect pigments 605
- 33 Fluorescence and fluorescent dyes 611
- 34 Fulgide dyes 651
- 35 Hemicyanine dyes 671
- 36 Hemioxonol dyes 685
- 37 Historical pigments, dyes and binders 691
- 38 Indophenol and related dyes 749
- 39 Inorganic luminescent pigments 765
- 40 Iron blue pigments 777
- 41 Iron oxide pigments 783
- 42 Merocyanine dyes 799
- 43 Metal complex pigments 815
- 44 Metal effect pigments 829
- Index 849
