{"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\/it\/what-is-a-pigment-index\/","title":{"rendered":"Che cos'\u00e8 l'indice di pigmento?"},"content":{"rendered":"<p>Quando i fornitori di pigmenti a monte dei rivestimenti forniscono i pigmenti, ogni pigmento ha il suo corrispondente numero di indice CI. Quando i clienti a valle dei rivestimenti richiedono colori specifici, ogni colore ha anche il suo corrispondente numero di indice Pantone. Sia l'indice CI che l'indice Pantone vengono utilizzati per distinguere i colori: quali sono le differenze e i collegamenti?<\/p>\n\n\n\n<p><strong>01 Coloranti e pigmenti<\/strong><strong><\/strong><\/p>\n\n\n\n<p>I coloranti sono agenti coloranti con forti effetti tintoriali o fluorescenti che conferiscono colore ai materiali assorbendo selettivamente la luce.<\/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>Solubili in acqua o in solventi organici, presentano affinit\u00e0 per il substrato, legandosi attraverso legami ionici o idrogeno per conferire colore con una certa solidit\u00e0 tintoriale. Sono utilizzati principalmente nei settori tessile, del cuoio, alimentare, cosmetico e in altri campi.<\/p>\n\n\n\n<p>I pigmenti sono sostanze colorate particellari insolubili che forniscono effetti cromatici assorbendo o diffondendo selettivamente la luce, mantenendo la loro struttura cristallina o granulare durante il processo di colorazione.<\/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>I pigmenti sono tipicamente dispersi in un supporto o in un substrato per l'applicazione, come nella produzione di vernici, inchiostri, materie plastiche e prodotti simili.<\/p>\n\n\n\n<p><strong>02 Indice di pigmento (o colorante)<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Il Colour Index (CI) \u00e8 un sistema di classificazione standardizzato per l'industria globale dei coloranti e dei pigmenti. Pubblicato e gestito congiuntamente dalla Society of Dyers and Colourists (DSC) nel Regno Unito e dall'American Association of Textile Chemists and Colorists (AATCC) negli Stati Uniti, ha lo scopo di risolvere la confusione nella nomenclatura commerciale e di ottenere una gestione standardizzata dei coloranti.<\/p>\n\n\n\n<p><strong>1) Indice di colore Nome generico (CIGN)<\/strong><strong><\/strong><\/p>\n\n\n\n<p>CIGN descrive i prodotti commerciali attraverso la categoria di applicazione riconosciuta, la tonalit\u00e0 e il numero di serie. Il formato di denominazione \u00e8:<strong>\u00a0CI + Categoria di applicazione + Colore + Numero di serie. <\/strong>La categoria di applicazione identifica il tipo di colorante, come Pigmento o Vat (colorante di riduzione). Il colore identifica la tonalit\u00e0 di base del colorante, come Giallo, Rosso o Nero. Il numero di serie identifica il numero di sequenza registrato del pigmento. I prodotti pigmentati che condividono la stessa designazione possiedono strutture chimiche identiche nei loro componenti pigmentati.<\/p>\n\n\n\n<p>Esempi di denominazione: C.I. Pigmento Giallo 1, C.I. Pigmento Giallo 3, C.I. Pigmento Rosso 3, C.I. Pigmento Nero 11. Queste denominazioni sono talvolta abbreviate direttamente come PY 1, PY 3, PR 3, PB 11. Sia il pigmento blu che il pigmento nero sono abbreviati in PB. Per evitare confusione, il pigmento blu \u00e8 abbreviato in PB, mentre il pigmento nero \u00e8 abbreviato in PBk.<\/p>\n\n\n\n<p><strong>2) Numero di costituzione dell'indice del colore (CICN)<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Per alcuni pigmenti la cui struttura chimica \u00e8 stata pubblicata, viene assegnato un numero a cinque cifre. Ad esempio, PY 1 corrisponde al CICN 11680 e PY 3 corrisponde al CICN 11710. Le strutture dei pigmenti corrispondenti a CI 11680 e CI 11710 sono mostrate nella figura seguente.<\/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>Nel 1997, con la proliferazione di coloranti con strutture chimiche diverse, in particolare di coloranti monoazoici, i numeri CI a cinque cifre sono apparsi insufficienti. Di conseguenza, il sistema di numerazione CI \u00e8 stato ampliato a sei cifre. Ad esempio, il numero CICN del giallo vanadato di bismuto (PY 184) \u00e8 771740.<\/p>\n\n\n\n<p><strong>3) Designazione del colon<\/strong><strong><\/strong><\/p>\n\n\n\n<p>I due punti \"\uff1a\"sono utilizzati per indicare variazioni minori nei numeri dei pigmenti, come ad esempio il blu ftalocianina PB 15, PB 15:1, PB 15:2 e PB 15:3. I corrispondenti numeri CICN sono 74160, 74160:1, 74160:2 e 74160:3. I loro numeri CICN corrispondenti sono 74160, 74160:1, 74160:2 e 74160:3. Questi indici indicano pigmenti con strutture chimiche identiche o quasi identiche, ma con forme cristalline diverse.<\/p>\n\n\n\n<p>Il PB 15 presenta la forma cristallina fondamentale \u03b1, con una tonalit\u00e0 di rosso-blu. Tuttavia, questa forma \u00e8 instabile e si trasforma in fase \u03b2 a temperature elevate o in solventi, causando spostamenti di fase del colore. Il PB 15:1 \u00e8 una forma stabile in fase \u03b1. La sostituzione parziale dell'atomo di cloro aumenta la stabilit\u00e0 della fase \u03b1, preservando il colore blu della fase rossa e riducendo la tendenza alla trasformazione di fase. Il PB 15:2 \u00e8 una forma amorfa in fase \u03b1. Il trattamento superficiale della resina interrompe la cristallinit\u00e0, migliorando le propriet\u00e0 di dispersione e anti-flocculazione. Il PB 15:3 \u00e8 la forma pi\u00f9 comune nei rivestimenti. Si tratta di una forma a fase \u03b2 che presenta una fase verde di colore blu. Questa fase \u00e8 la pi\u00f9 stabile e offre un'eccellente resistenza agli agenti atmosferici e al calore.<\/p>\n\n\n\n<p><strong>03 Indice Pantone<\/strong><strong><\/strong><\/p>\n\n\n\n<p>L'indice Pantone si riferisce al sistema di corrispondenza Pantone (PMS) e ai campioni di colore, alle librerie e agli strumenti associati. L'indice Pantone \u00e8 una vasta libreria di riferimento standardizzata che assegna un numero unico a ciascun colore. \u00c8 il sistema di corrispondenza dei colori spot pi\u00f9 diffuso e autorevole al mondo.<\/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'indice Pantone fornisce un linguaggio di comunicazione del colore unificato e standardizzato per designer, produttori, stampatori, marchi, ecc. Quando un designer specifica un numero di colore Pantone (ad esempio \"Pantone 277 C\"), le tipografie, i fornitori di tessuti, i produttori di vernici e altri soggetti in tutto il mondo possono individuare lo stesso identico colore sulla base di questo numero standard per la produzione, garantendo la coerenza dei colori.<\/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>L'indice Pantone copre praticamente tutti i settori che richiedono un controllo preciso del colore, come la grafica e la stampa, il tessile e l'abbigliamento, la plastica, i rivestimenti, gli inchiostri e il design dei prodotti.<\/p>\n\n\n\n<p><strong>04 Differenze tra indice CI e indice Pantone<\/strong><strong><\/strong><\/p>\n\n\n\n<p>L'indice CI si rivolge a pigmenti o coloranti, assegnando un numero unico a ciascun colorante in base alla sua struttura chimica.<\/p>\n\n\n\n<p>L'indice Pantone \u00e8 progettato per i colori, assegnando un numero unico a ciascun colore all'interno del Pantone Matching System. Questi colori possono essere la tonalit\u00e0 di un singolo pigmento o colorante, oppure un colore creato mescolando pi\u00f9 materiali monocolore in proporzioni specifiche. Poich\u00e9 Pantone utilizza un numero limitato di colori di base, la stragrande maggioranza delle voci dell'Indice Pantone sono sfumature create mescolando questi colori di 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 v27.7 - 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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