{"id":9080,"date":"2025-09-10T08:48:33","date_gmt":"2025-09-10T08:48:33","guid":{"rendered":"https:\/\/chromeclair.com\/?p=9080"},"modified":"2025-09-10T08:48:36","modified_gmt":"2025-09-10T08:48:36","slug":"what-is-a-pigment-index","status":"publish","type":"post","link":"https:\/\/chromeclair.com\/fr\/what-is-a-pigment-index\/","title":{"rendered":"Qu'est-ce qu'un indice pigmentaire ?"},"content":{"rendered":"<p>Lorsque les fournisseurs de pigments en amont des rev\u00eatements fournissent des pigments, chaque pigment a son num\u00e9ro d'index CI correspondant. Lorsque les clients des rev\u00eatements en aval demandent des couleurs sp\u00e9cifiques, chaque couleur a \u00e9galement son num\u00e9ro d'indice Pantone correspondant. L'indice CI et l'indice Pantone sont tous deux utilis\u00e9s pour distinguer les couleurs. Quelles sont donc leurs diff\u00e9rences et leurs liens ?<\/p>\n\n\n\n<p><strong>01 Colorants et pigments<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Les colorants sont des agents colorants \u00e0 fort pouvoir colorant ou fluorescent qui donnent de la couleur aux mat\u00e9riaux en absorbant s\u00e9lectivement la lumi\u00e8re.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"616\" src=\"https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/1-1-1-1024x616.webp\" alt=\"\" class=\"wp-image-9081\" srcset=\"https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/1-1-1-1024x616.webp 1024w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/1-1-1-300x181.webp 300w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/1-1-1-768x462.webp 768w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/1-1-1-1536x925.webp 1536w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/1-1-1-2048x1233.webp 2048w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/1-1-1-18x12.webp 18w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/1-1-1-990x596.webp 990w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/1-1-1-441x265.webp 441w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/1-1-1-800x482.webp 800w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/1-1-1-150x90.webp 150w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/1-1-1-500x301.webp 500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Solubles dans l'eau ou les solvants organiques, ils pr\u00e9sentent une affinit\u00e9 pour le substrat, s'y attachant par des liaisons ioniques ou hydrog\u00e8ne pour conf\u00e9rer une couleur avec une certaine solidit\u00e9 de teinture. Ils sont principalement utilis\u00e9s dans les textiles, le cuir, l'alimentation, les cosm\u00e9tiques et d'autres domaines.<\/p>\n\n\n\n<p>Les pigments sont des substances color\u00e9es particulaires insolubles qui produisent des effets de couleur en absorbant ou en diffusant s\u00e9lectivement la lumi\u00e8re, en conservant leur structure cristalline ou granulaire tout au long du processus de coloration.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"616\" src=\"https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/3-13-1024x616.webp\" alt=\"\" class=\"wp-image-9082\" srcset=\"https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/3-13-1024x616.webp 1024w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/3-13-300x181.webp 300w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/3-13-768x462.webp 768w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/3-13-1536x925.webp 1536w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/3-13-2048x1233.webp 2048w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/3-13-18x12.webp 18w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/3-13-990x596.webp 990w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/3-13-441x265.webp 441w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/3-13-800x482.webp 800w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/3-13-150x90.webp 150w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/3-13-500x301.webp 500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Les pigments sont g\u00e9n\u00e9ralement dispers\u00e9s dans un support ou un substrat en vue d'une application, par exemple dans la fabrication de peintures, d'encres, de plastiques et de produits similaires.<\/p>\n\n\n\n<p><strong>02 Indice de pigment (ou de colorant)<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Le Colour Index (CI) est un syst\u00e8me de classification normalis\u00e9 pour l'industrie mondiale des colorants et des pigments. Publi\u00e9 et mis \u00e0 jour conjointement par la Society of Dyers and Colourists (SDC) au Royaume-Uni et l'American Association of Textile Chemists and Colorists (AATCC) aux \u00c9tats-Unis, il vise \u00e0 dissiper la confusion dans la nomenclature commerciale et \u00e0 parvenir \u00e0 une gestion normalis\u00e9e des colorants.<\/p>\n\n\n\n<p><strong>1) Nom g\u00e9n\u00e9rique de l'indice de couleur (CIGN)<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Le CIGN d\u00e9crit les produits commerciaux par leur cat\u00e9gorie d'application reconnue, leur teinte et leur num\u00e9ro de s\u00e9rie. Le format de d\u00e9nomination est le suivant :<strong>\u00a0CI + Cat\u00e9gorie d'application + Couleur + Num\u00e9ro de s\u00e9rie. <\/strong>La cat\u00e9gorie d'application identifie le type de colorant, tel que Pigment ou Vat (colorant de r\u00e9duction). La couleur identifie la teinte de base du colorant, comme le jaune, le rouge ou le noir. Le num\u00e9ro de s\u00e9rie identifie le num\u00e9ro de s\u00e9quence enregistr\u00e9 du pigment. Les produits pigmentaires partageant la m\u00eame d\u00e9signation poss\u00e8dent des structures chimiques identiques dans leurs composants pigmentaires.<\/p>\n\n\n\n<p>Exemples de d\u00e9nomination : C.I. Pigment Yellow 1, C.I. Pigment Yellow 3, C.I. Pigment Red 3, C.I. Pigment Black 11. Ces noms sont parfois abr\u00e9g\u00e9s directement en PY 1, PY 3, PR 3, PB 11. Le bleu pigmentaire et le noir pigmentaire sont tous deux abr\u00e9g\u00e9s en PB. Pour \u00e9viter toute confusion, le pigment bleu est abr\u00e9g\u00e9 en PB, tandis que le pigment noir est abr\u00e9g\u00e9 en PBk.<\/p>\n\n\n\n<p><strong>2) Num\u00e9ro de constitution de l'indice de couleur (CICN)<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Pour certains pigments dont la structure chimique a \u00e9t\u00e9 publi\u00e9e, un num\u00e9ro \u00e0 cinq chiffres leur est attribu\u00e9. Par exemple, PY 1 correspond au CICN 11680, et PY 3 correspond au CICN 11710. Les structures des pigments correspondant au CI 11680 et au CI 11710 sont pr\u00e9sent\u00e9es dans la figure ci-dessous.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"616\" src=\"https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/1-1024x616.jpg\" alt=\"\" class=\"wp-image-9083\" srcset=\"https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/1-1024x616.jpg 1024w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/1-300x181.jpg 300w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/1-768x462.jpg 768w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/1-1536x925.jpg 1536w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/1-2048x1233.jpg 2048w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/1-18x12.jpg 18w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/1-990x596.jpg 990w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/1-441x265.jpg 441w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/1-800x482.jpg 800w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/1-150x90.jpg 150w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/1-500x301.jpg 500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"616\" src=\"https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/2-1-1024x616.jpg\" alt=\"\" class=\"wp-image-9084\" srcset=\"https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/2-1-1024x616.jpg 1024w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/2-1-300x181.jpg 300w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/2-1-768x462.jpg 768w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/2-1-1536x925.jpg 1536w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/2-1-2048x1233.jpg 2048w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/2-1-18x12.jpg 18w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/2-1-990x596.jpg 990w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/2-1-441x265.jpg 441w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/2-1-800x482.jpg 800w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/2-1-150x90.jpg 150w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/2-1-500x301.jpg 500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>En 1997, avec la prolif\u00e9ration de colorants aux structures chimiques diverses - en particulier les colorants monoazo\u00efques - les num\u00e9ros CI \u00e0 cinq chiffres sont apparus insuffisants. Par cons\u00e9quent, le syst\u00e8me de num\u00e9rotation des CI a \u00e9t\u00e9 \u00e9tendu \u00e0 six chiffres. Par exemple, le num\u00e9ro CICN du jaune de vanadate de bismuth (PY 184) est 771740.<\/p>\n\n\n\n<p><strong>3) D\u00e9signation du colon<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Les deux points \"\uff1a\" sont utilis\u00e9s pour indiquer des variations mineures dans les num\u00e9ros des pigments, comme le bleu de phtalocyanine PB 15, PB 15:1, PB 15:2 et PB 15:3. Les num\u00e9ros CICN correspondants sont 74160, 74160:1, 74160:2 et 74160:3. Ces indices d\u00e9signent des pigments dont les structures chimiques sont identiques ou presque identiques, mais dont les formes cristallines diff\u00e8rent.<\/p>\n\n\n\n<p>Le PB 15 pr\u00e9sente la forme cristalline \u03b1 fondamentale, avec une teinte bleue en phase rouge. Cependant, cette forme est instable et se transforme en phase \u03b2 \u00e0 des temp\u00e9ratures \u00e9lev\u00e9es ou dans des solvants, ce qui entra\u00eene des d\u00e9phasages de couleur. Le PB 15:1 est une forme \u03b1-phase stable. La substitution partielle d'atomes de chlore am\u00e9liore la stabilit\u00e9 de la phase \u03b1, pr\u00e9servant la couleur bleue de la phase rouge et r\u00e9duisant la tendance \u00e0 la transformation de phase. Le PB 15:2 est une forme \u03b1-phase amorphe. Le traitement de surface de la r\u00e9sine perturbe la cristallinit\u00e9, am\u00e9liorant la dispersion et les propri\u00e9t\u00e9s anti-floculation. Le PB 15:3 est la forme la plus courante dans les rev\u00eatements. Il s'agit d'une forme \u03b2-phase pr\u00e9sentant une phase verte de couleur bleue. Cette phase est la plus stable et offre une excellente r\u00e9sistance aux intemp\u00e9ries et \u00e0 la chaleur.<\/p>\n\n\n\n<p><strong>03 Index Pantone<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Le Pantone Index fait r\u00e9f\u00e9rence au Pantone Matching System (PMS) et \u00e0 ses nuanciers, biblioth\u00e8ques et outils associ\u00e9s. Le Pantone Index est une vaste biblioth\u00e8que de r\u00e9f\u00e9rence normalis\u00e9e qui attribue un num\u00e9ro unique \u00e0 chaque couleur. Il s'agit du syst\u00e8me de correspondance des couleurs d'accompagnement le plus largement utilis\u00e9 et faisant autorit\u00e9 dans le monde.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"436\" src=\"https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/4-14-1024x436.webp\" alt=\"\" class=\"wp-image-9085\" srcset=\"https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/4-14-1024x436.webp 1024w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/4-14-300x128.webp 300w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/4-14-768x327.webp 768w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/4-14-1536x654.webp 1536w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/4-14-2048x871.webp 2048w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/4-14-18x8.webp 18w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/4-14-990x421.webp 990w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/4-14-441x188.webp 441w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/4-14-800x340.webp 800w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/4-14-150x64.webp 150w, https:\/\/chromeclair.com\/wp-content\/uploads\/2025\/09\/4-14-500x213.webp 500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>L'index Pantone fournit un langage de communication unifi\u00e9 et standardis\u00e9 pour les designers, les fabricants, les imprimeurs, les marques, etc. Lorsqu'un designer sp\u00e9cifie un num\u00e9ro de couleur Pantone (tel que \"Pantone 277 C\"), les imprimeries, les fournisseurs de tissus, les fabricants de peinture et d'autres acteurs dans le monde entier peuvent localiser exactement la m\u00eame couleur sur la base de ce num\u00e9ro standard pour la production, garantissant ainsi la coh\u00e9rence des couleurs.<\/p>\n\n\n\n<p>Pantone\u2019s core lies in spot colors. Spot colors are produced using pre-mixed specific inks (or dyes, paints) rather than simulated through the overlay of CMYK four-color halftones. Spot colors offer greater accuracy, vibrancy, and consistency, unaffected by printing press settings or monitor variations. They are particularly suited for applications demanding precise color matching, such as brand identity colors and iconic packaging. For example, Pantone 277 C in the Pantone color guide is formulated using the following three inks in the specified ratios:<\/p>\n\n\n\n<p><strong>PANTONE Pro. Blue\u00a0 \u00a03.42<\/strong><strong><\/strong><\/p>\n\n\n\n<p><strong>PANTONE Violet v.2\u00a0 \u00a01.69<\/strong><strong><\/strong><\/p>\n\n\n\n<p><strong>PANTONE HD Ext.\u00a0 \u00a0 \u00a0\u00a0<\/strong><strong>94.89<\/strong><\/p>\n\n\n\n<p>Le Pantone Index couvre pratiquement tous les domaines n\u00e9cessitant un contr\u00f4le pr\u00e9cis des couleurs, tels que la conception graphique et l'impression, le textile et l'habillement, les plastiques, les rev\u00eatements, les encres et la conception de produits.<\/p>\n\n\n\n<p><strong>04 Diff\u00e9rences entre l'indice CI et l'indice Pantone<\/strong><strong><\/strong><\/p>\n\n\n\n<p>L'indice CI cible les pigments ou les colorants, en attribuant un num\u00e9ro unique \u00e0 chaque colorant sur la base de sa structure chimique.<\/p>\n\n\n\n<p>L'index Pantone est con\u00e7u pour les couleurs, attribuant un num\u00e9ro unique \u00e0 chaque couleur dans le syst\u00e8me de correspondance Pantone. Ces couleurs peuvent \u00eatre la teinte d'un seul pigment ou colorant, ou une couleur cr\u00e9\u00e9e par le m\u00e9lange de plusieurs mat\u00e9riaux unicolores dans des proportions sp\u00e9cifiques. \u00c9tant donn\u00e9 que Pantone utilise un nombre limit\u00e9 de couleurs de base, la grande majorit\u00e9 des entr\u00e9es de l'index Pantone sont des nuances cr\u00e9\u00e9es par le m\u00e9lange de ces couleurs de base.<\/p>","protected":false},"excerpt":{"rendered":"<p>When pigment suppliers upstream of the coatings supply pigments, each pigment has its corresponding CI index number. When downstream coating customers request specific colors, each color also has its corresponding Pantone index number. Both the CI index and Pantone index are used to distinguish colors, so what are their differences and connections? 01 Dyes and [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-9080","post","type-post","status-publish","format-standard","hentry","category-gel-polish"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What is a pigment index?<\/title>\n<meta name=\"description\" content=\"When pigment suppliers upstream of the coatings supply pigments, each pigment has its corresponding CI index number. When downstream coating customers request specific colors, each color also has its corresponding Pantone index number. 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