12 Cerium sulfide pigments
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Gerhard Pfaff
Abstract
Cerium sulfide pigments belong to the inorganic orange and red pigments. They were developed to substitute cadmium and lead containing red and orange colored pigments, in particular in plastics. Cerium(III) sulfide exists in three allotropic modifications, but only γ-Ce2S3, which is colored dark red, is suitable for the use as a pigment. Cerium sulfide pigments are characterized by high color strength, strong hiding power and sufficient thermal stability. Their limited stability in water containing systems and in humid atmospheres is not without problems. The pigments tend to degradation in the presence of water or humidity to form hydrogen sulfide, which limits the application possibilities significantly.
Abstract
Cerium sulfide pigments belong to the inorganic orange and red pigments. They were developed to substitute cadmium and lead containing red and orange colored pigments, in particular in plastics. Cerium(III) sulfide exists in three allotropic modifications, but only γ-Ce2S3, which is colored dark red, is suitable for the use as a pigment. Cerium sulfide pigments are characterized by high color strength, strong hiding power and sufficient thermal stability. Their limited stability in water containing systems and in humid atmospheres is not without problems. The pigments tend to degradation in the presence of water or humidity to form hydrogen sulfide, which limits the application possibilities significantly.
Kapitel in diesem Buch
- Frontmatter I
- Preface V
- Contents VII
- List of contributors XV
- 1 Anthraquinonoid pigments 1
- 2 Apocyanine dyes 15
- 3 Azo (Hydrazone) pigments: general principles 19
- 4 Bismuth vanadate pigments 29
- 5 Black pigments 35
- 6 Cadmium sulfide / selenide pigments 37
- 7 Carbon black pigments 43
- 8 Carbonyl pigments: general principles 61
- 9 Carbonyl pigments: miscellaneous types 69
- 10 Cationic (Basic) dye complex pigments 83
- 11 Ceramic colors 95
- 12 Cerium sulfide pigments 103
- 13 Chromate and molybdate pigments 107
- 14 Chromium oxide pigments 113
- 15 Colorants: general survey 119
- 16 Colorants in building materials 149
- 17 Colorants in coatings 161
- 18 Colorants in cosmetic applications 245
- 19 Colorants in plastic applications 287
- 20 Colorants in printing applications 311
- 21 Colored pigments 345
- 22 Color fundamentals 353
- Index 407
Kapitel in diesem Buch
- Frontmatter I
- Preface V
- Contents VII
- List of contributors XV
- 1 Anthraquinonoid pigments 1
- 2 Apocyanine dyes 15
- 3 Azo (Hydrazone) pigments: general principles 19
- 4 Bismuth vanadate pigments 29
- 5 Black pigments 35
- 6 Cadmium sulfide / selenide pigments 37
- 7 Carbon black pigments 43
- 8 Carbonyl pigments: general principles 61
- 9 Carbonyl pigments: miscellaneous types 69
- 10 Cationic (Basic) dye complex pigments 83
- 11 Ceramic colors 95
- 12 Cerium sulfide pigments 103
- 13 Chromate and molybdate pigments 107
- 14 Chromium oxide pigments 113
- 15 Colorants: general survey 119
- 16 Colorants in building materials 149
- 17 Colorants in coatings 161
- 18 Colorants in cosmetic applications 245
- 19 Colorants in plastic applications 287
- 20 Colorants in printing applications 311
- 21 Colored pigments 345
- 22 Color fundamentals 353
- Index 407
