49 Naphthopyran dyes
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Andrew Towns
Abstract
This article covers the most commercially important type of photochromic dye. It outlines which of its subclasses are of most use and how they are manufactured. The history of the industrial exploitation of this kind of colorant is briefly given before illustrating its versatility with examples of the most useful ways in which photochromic properties can be manipulated by making adjustments to molecular structure.
Abstract
This article covers the most commercially important type of photochromic dye. It outlines which of its subclasses are of most use and how they are manufactured. The history of the industrial exploitation of this kind of colorant is briefly given before illustrating its versatility with examples of the most useful ways in which photochromic properties can be manipulated by making adjustments to molecular structure.
Chapters in this book
- Frontmatter I
- Preface V
- Contents VII
- List of contributors XV
- 45 Mixed metal oxide pigments 849
- 46 Monoazo (Monohydrazone) pigments based on acetoacetanilides 859
- 47 Monoazo (Monohydrazone) pigments based on benzimidazolones 871
- 48 Monoazo (Monohydrazone) pigments based on 2-naphthol and derivatives 885
- 49 Naphthopyran dyes 909
- 50 Organic pigments: general principles 925
- 51 Oxonitride pigments 955
- 52 Oxonol dyes 959
- 53 Perylene and perinone pigments 967
- 54 Photochromic dyes 979
- 55 Phthalocyanine blue pigments 1015
- 56 Phthalocyanine green pigments 1029
- 57 Phthalocyanine pigments: general principles 1035
- 58 Pigments: general aspects 1041
- 59 Polymethine dyes 1057
- 60 Quinacridone pigments 1071
- 61 Special effect pigments 1081
- 62 Spirooxazine dyes 1105
- 63 Spiropyran dyes 1125
- 64 Streptocyanine dyes 1153
- 65 Streptomerocyanine dyes 1165
- 66 Titanium dioxide pigments 1177
- 67 Transparent pigments 1195
- 68 Ultramarine pigments 1203
- 69 White pigments 1211
- 70 Zinc oxide pigments 1213
- 71 Zinc sulfide pigments 1219
- Index 1225
Chapters in this book
- Frontmatter I
- Preface V
- Contents VII
- List of contributors XV
- 45 Mixed metal oxide pigments 849
- 46 Monoazo (Monohydrazone) pigments based on acetoacetanilides 859
- 47 Monoazo (Monohydrazone) pigments based on benzimidazolones 871
- 48 Monoazo (Monohydrazone) pigments based on 2-naphthol and derivatives 885
- 49 Naphthopyran dyes 909
- 50 Organic pigments: general principles 925
- 51 Oxonitride pigments 955
- 52 Oxonol dyes 959
- 53 Perylene and perinone pigments 967
- 54 Photochromic dyes 979
- 55 Phthalocyanine blue pigments 1015
- 56 Phthalocyanine green pigments 1029
- 57 Phthalocyanine pigments: general principles 1035
- 58 Pigments: general aspects 1041
- 59 Polymethine dyes 1057
- 60 Quinacridone pigments 1071
- 61 Special effect pigments 1081
- 62 Spirooxazine dyes 1105
- 63 Spiropyran dyes 1125
- 64 Streptocyanine dyes 1153
- 65 Streptomerocyanine dyes 1165
- 66 Titanium dioxide pigments 1177
- 67 Transparent pigments 1195
- 68 Ultramarine pigments 1203
- 69 White pigments 1211
- 70 Zinc oxide pigments 1213
- 71 Zinc sulfide pigments 1219
- Index 1225
