{"id":916,"date":"2026-05-31T14:22:37","date_gmt":"2026-05-31T06:22:37","guid":{"rendered":"https:\/\/bastone-petrochem.com\/?p=916"},"modified":"2026-10-15T11:46:00","modified_gmt":"2026-10-15T03:46:00","slug":"decide-between-three-main-grades-polypropylene-resin","status":"publish","type":"post","link":"https:\/\/bastone-petrochem.com\/es\/decide-between-three-main-grades-polypropylene-resin\/","title":{"rendered":"C\u00f3mo decidir entre los tres grados principales de resina de polipropileno"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Los especificadores suelen llegar a esta decisi\u00f3n de la misma manera. Un proveedor env\u00eda un presupuesto con un c\u00f3digo de grado de cuatro caracteres y un n\u00famero de MFI, y la pregunta pasa de \u201cqu\u00e9 familia de PP\u201d a \u201csi esta es la familia adecuada para lo que estoy construyendo\u201d.\u201d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para el especificador que se abastece de China, la selecci\u00f3n de la familia y la selecci\u00f3n del canal del productor son una sola decisi\u00f3n, no dos. Un grado con c\u00f3digo de productor es un identificador del espacio de nombres de PetroChina o Sinopec. Elegir una familia sin elegir un canal te deja sin poder mapear la decisi\u00f3n a algo que un proveedor pueda realmente entregar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Las tres familias principales de grados de resina de polipropileno \u2014 homopol\u00edmero (HP), copol\u00edmero aleatorio (RCP) y copol\u00edmero de impacto \/ bloque (ICP\/BCP) \u2014 responden a diferentes preguntas de aplicaci\u00f3n. Para la qu\u00edmica subyacente, el <a href=\"https:\/\/bastone-petrochem.com\/es\/what-is-polypropylene-resin\/\">art\u00edculo de antecedentes sobre las tres familias principales de grados de polipropileno<\/a> es la pieza complementaria.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Cinco Criterios Que Deciden Qu\u00e9 Familia de PP Se Adapta a Su Aplicaci\u00f3n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Cinco n\u00fameros de la hoja de especificaciones deciden la elecci\u00f3n de la familia:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ventana MFI<\/strong> \u2014 velocidad de procesamiento, geometr\u00eda de la pieza<\/li>\n<li><strong>Cristalinidad \/ punto de fusi\u00f3n<\/strong> \u2014 rigidez, l\u00edmite de deflexi\u00f3n por calor<\/li>\n<li><strong>Impacto a temperatura<\/strong> \u2014 supervivencia bajo cero<\/li>\n<li><strong>Claridad<\/strong> \u2014 botella transparente vs. caja opaca<\/li>\n<li><strong>Costo<\/strong> \u2014 el homopol\u00edmero es el piso; el ICP tiene una prima por la fase de caucho EPR<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Cada eje te empuja hacia una familia diferente: la claridad y la resistencia a largo plazo para tuber\u00edas te llevan al RCP, el impacto bajo cero te lleva al ICP, la rigidez pura y el costo m\u00e1s bajo te llevan al HP.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Familia<\/th><th>Tm (\u00b0C)<\/th><th>Densidad (g\/cm\u00b3)<\/th><th>Ductilidad a baja temperatura<\/th><th>Aplicaciones t\u00edpicas<\/th><th>Ejemplos de SKU del canal de China<\/th><\/tr><\/thead><tbody><tr><td>Homopol\u00edmero (HP)<\/td><td>160\u2013165<\/td><td>0.904\u20130.908<\/td><td>Fr\u00e1gil por debajo de 0 \u00b0C<\/td><td>Cinta para bolsas tejidas, FIBC, monofilamento, fibra, no tejido, inyecci\u00f3n r\u00edgida<\/td><td>T30S, S1003, S2025<\/td><\/tr><tr><td>Copol\u00edmero aleatorio (RCP)<\/td><td>135\u2013159<\/td><td>0.904\u20130.908<\/td><td>D\u00factil cerca de 0 \u00b0C<\/td><td>Tuber\u00eda PP-R para agua caliente\/fr\u00eda, envases transparentes de pared delgada, botellas moldeadas por soplado<\/td><td>T4401<\/td><\/tr><tr><td>Copol\u00edmero de impacto \/ bloque (ICP\/BCP)<\/td><td>160\u2013165<\/td><td>0.898\u20130.900<\/td><td>D\u00factil hasta aproximadamente \u221220 \u00b0C<\/td><td>Parachoques automotrices, cajas de bater\u00edas, contenedores para congelador, carcasas sometidas a pruebas de ca\u00edda<\/td><td>Grados ICP en el canal de PetroChina \/ Sinopec \/ CNOOC<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00f3mo Elegir Homopol\u00edmero (HP) para Aplicaciones de PP Prioritarias en Rigidez<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">El polipropileno homopol\u00edmero gana cuando la rigidez, la dureza y el costo importan m\u00e1s que la claridad o la tenacidad bajo cero. El desglose de Machine Design de Paul Martin describe la cadena como \u201csolo mon\u00f3mero de propileno en forma s\u00f3lida semicristalina\u201d.\u201d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Esa estructura le da al HP el punto de fusi\u00f3n m\u00e1s alto de la familia (160\u2013165 \u00b0C) y una densidad de 0.904\u20130.908 g\/cm\u00b3. El HP es fr\u00e1gil por debajo de 0 \u00b0C. Una pieza que vive en un congelador o en un muelle de carga exterior en invierno no debe especificarse en homopol\u00edmero.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">El espacio del HP es amplio comercialmente en los canales de PetroChina y Sinopec:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>T30S<\/strong> \u2014 grado can\u00f3nico para monofilamento y cinta para sacos tejidos, cuerda y extrusi\u00f3n de cinta FIBC<\/li>\n<li><strong>S1003<\/strong> \u2014 misma ventana con un ajuste de MFI ligeramente diferente<\/li>\n<li><strong>S2025<\/strong> \u2014 fibra y <a href=\"https:\/\/bastone-petrochem.com\/es\/pp-grade-spunbond-nonwoven-lines\/\">aplicaciones de no tejidos spunbond<\/a><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Las cotizaciones de extrusi\u00f3n de cinta que veo con m\u00e1s frecuencia pasan por este conjunto de grados HP.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1376\" height=\"768\" src=\"https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/05\/how-to-decide-between-the-three-main-grades-of-polypropylene-resin-1.png\" alt=\"Gr\u00e1nulos de resina de polipropileno homopol\u00edmero junto a muestras de cinta de bolsas tejidas para aplicaciones de extrusi\u00f3n de cinta\" class=\"wp-image-915\" srcset=\"https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/05\/how-to-decide-between-the-three-main-grades-of-polypropylene-resin-1.png 1376w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/05\/how-to-decide-between-the-three-main-grades-of-polypropylene-resin-1-300x167.png 300w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/05\/how-to-decide-between-the-three-main-grades-of-polypropylene-resin-1-1024x572.png 1024w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/05\/how-to-decide-between-the-three-main-grades-of-polypropylene-resin-1-768x429.png 768w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/05\/how-to-decide-between-the-three-main-grades-of-polypropylene-resin-1-600x335.png 600w\" sizes=\"auto, (max-width: 1376px) 100vw, 1376px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00f3mo Elegir Copol\u00edmero Aleatorio (RCP) para Tuber\u00eda PP-R y Envases Transparentes<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">El polipropileno copol\u00edmero aleatorio gana para tuber\u00eda PP-R de agua caliente y fr\u00eda y para envases de pared delgada donde se necesita tanto claridad como cierta flexibilidad. Hasta aproximadamente el 6% de eteno se dispersa aleatoriamente a trav\u00e9s de la cadena. Esto interrumpe la cristalinidad, reduce el punto de fusi\u00f3n al rango de 135\u2013159 \u00b0C y acerca el l\u00edmite de fragilidad a 0 \u00b0C mientras abre la claridad.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">El copol\u00edmero aleatorio para tuber\u00eda, como el PetroChina Dushanzi T4401, se encuentra en esta familia. Ascent Petrochem publica T4401 con un MFI de 0.25 g\/10min (230 \u00b0C \/ 2.16 kg), densidad de 0.90 g\/cm\u00b3 y una temperatura m\u00e1xima de operaci\u00f3n de 95 \u00b0C para tuber\u00eda PP-R de agua caliente\/fr\u00eda.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">PetroChina Dushanzi opera una planta de PP Innovene de 550 KTA con licencia de INEOS \u2014 el productor publicado detr\u00e1s del espacio PP-R de T4401 en nuestro canal.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Si est\u00e1 obteniendo PP para tuber\u00eda de agua fr\u00eda y caliente, apunte a un copol\u00edmero aleatorio en la banda de MFI de 0.25\u20130.30 g\/10min. T4401 es la referencia m\u00e1s com\u00fan, con equivalentes de Sinopec disponibles como segunda fuente.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">No sustituya homopol\u00edmero por copol\u00edmero aleatorio en una aplicaci\u00f3n de tuber\u00eda sin volver a calificar. El homopol\u00edmero es fr\u00e1gil cerca de 0 \u00b0C y no posee la <a href=\"https:\/\/bastone-petrochem.com\/es\/how-long-does-pp-plastic-last\/\">clasificaci\u00f3n de resistencia hidrost\u00e1tica a largo plazo<\/a> para PP-R. Es una puerta de recalificaci\u00f3n, no un simple cambio de lista de precios.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1376\" height=\"768\" src=\"https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/05\/how-to-decide-between-the-three-main-grades-of-polypropylene-resin-2.png\" alt=\"Muestras de tuber\u00eda de resina de copol\u00edmero aleatorio de polipropileno PP-R para sistemas de agua caliente y fr\u00eda&lt;br&gt;\" class=\"wp-image-913\" srcset=\"https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/05\/how-to-decide-between-the-three-main-grades-of-polypropylene-resin-2.png 1376w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/05\/how-to-decide-between-the-three-main-grades-of-polypropylene-resin-2-300x167.png 300w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/05\/how-to-decide-between-the-three-main-grades-of-polypropylene-resin-2-1024x572.png 1024w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/05\/how-to-decide-between-the-three-main-grades-of-polypropylene-resin-2-768x429.png 768w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/05\/how-to-decide-between-the-three-main-grades-of-polypropylene-resin-2-600x335.png 600w\" sizes=\"auto, (max-width: 1376px) 100vw, 1376px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00f3mo Elegir Copol\u00edmero de Impacto (ICP\/BCP) para Aplicaciones Bajo Cero y de Prueba de Ca\u00edda<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"\/es\/product\/pp-k8003\/\">Copol\u00edmero de impacto de polipropileno<\/a> gana cuando la pieza debe soportar impactos bajo cero o abuso en pruebas de ca\u00edda: parachoques automotrices, cajas de bater\u00edas, contenedores de congelador. La morfolog\u00eda es una matriz de homopol\u00edmero con una fase de copol\u00edmero aleatorio de propileno mezclada que contiene 45\u201365% de etileno en la fase de caucho.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Esa fase dispersa de caucho de etileno-propileno (EPR) es lo que sobrevive al impacto en fr\u00edo mientras la matriz mantiene una rigidez general razonable. La densidad disminuye ligeramente a 0.898\u20130.900 g\/cm\u00b3, y la ductilidad se mantiene hasta aproximadamente \u221220 \u00b0C.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dentro de la familia ICP, la ventana de MFI en s\u00ed misma es un eje de selecci\u00f3n. Pedro Zaccaria de Syntex America informa que pasar de P640J (MFI 10) a P945J (MFI 65) en la serie P de SCGC reduce el Izod con muesca a 23 \u00b0C en aproximadamente un 34% (98 \u2192 65 J\/m). El m\u00f3dulo de flexi\u00f3n aumenta aproximadamente un 17% (1,177 \u2192 1,373 MPa) en el mismo intervalo.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Zaccaria expone claramente la versi\u00f3n interfamiliar del mismo punto: la decisi\u00f3n entre <a href=\"https:\/\/bastone-petrochem.com\/es\/homopolymer-vs-copolymer\/\">homopol\u00edmero y copol\u00edmero de impacto<\/a> es \u201cno flujo \u2014 es morfolog\u00eda\u201d porque la fase EPR es lo que sobrevive al impacto bajo cero. Las calidades de ICP est\u00e1n disponibles bajo pedido en <a href=\"\/es\/top-10-polypropylene-resin-suppliers\/\">proveedores del canal de PetroChina, Sinopec y CNOOC<\/a>. El c\u00f3digo espec\u00edfico depende del MFI objetivo de la aplicaci\u00f3n y de la especificaci\u00f3n de temperatura de impacto.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1376\" height=\"768\" src=\"https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/05\/how-to-decide-between-the-three-main-grades-of-polypropylene-resin-3.png\" alt=\"Diagrama de morfolog\u00eda de resina de copol\u00edmero de impacto de polipropileno que muestra la fase de caucho EPR dispersa en la matriz de homopol\u00edmero&lt;br&gt;\" class=\"wp-image-914\" srcset=\"https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/05\/how-to-decide-between-the-three-main-grades-of-polypropylene-resin-3.png 1376w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/05\/how-to-decide-between-the-three-main-grades-of-polypropylene-resin-3-300x167.png 300w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/05\/how-to-decide-between-the-three-main-grades-of-polypropylene-resin-3-1024x572.png 1024w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/05\/how-to-decide-between-the-three-main-grades-of-polypropylene-resin-3-768x429.png 768w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/05\/how-to-decide-between-the-three-main-grades-of-polypropylene-resin-3-600x335.png 600w\" sizes=\"auto, (max-width: 1376px) 100vw, 1376px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Por Qu\u00e9 el C\u00f3digo de Grado de Polipropileno en Su Presupuesto Decide la Elecci\u00f3n de la Familia<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">El c\u00f3digo de grado en una <a href=\"\/es\/product-category\/synthetic-resin\/pp\/\">cotizaci\u00f3n china de polipropileno<\/a> es un identificador de espacio de nombres de PetroChina o Sinopec, no un ID gen\u00e9rico de ASTM. El MFI que recibe un comprador depende de la versi\u00f3n del c\u00f3digo del productor que se cotice.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ascent Petrochem publica T4401 con MFI 0.25 g\/10min para tuber\u00eda PP-R. Chemdo lista \u201cPP pipe grade T4401\u201d alineado con PPH-Y40 \/ H39S a un nominal de 40 g\/10min seg\u00fan GB\/T 3682.1-2018. Mismo c\u00f3digo de cinco caracteres, dos p\u00e1ginas de distribuidor, aproximadamente una relaci\u00f3n de MFI de 160\u00d7 \u2014 pero los 40 g\/10min de Chemdo son la especificaci\u00f3n de H39S, con T4401 solo en el t\u00edtulo de la p\u00e1gina.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cuando estoy calificando un nuevo proveedor de PP \u2014 por ejemplo, agregando PetroChina Dushanzi T4401 como segunda fuente para un primario de Sinopec \u2014 ejecuto tres lotes en la l\u00ednea antes de firmar algo. El proveedor original permanece en espera activa durante el primer trimestre.<br>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Antes de enviar una RFQ,<br>, <a href=\"https:\/\/bastone-petrochem.com\/es\/compare\/\">compare los grados entre PetroChina, Sinopec y otros productores<br><\/a>. Trabaje el lado del canal en paralelo con el lado de la familia, no despu\u00e9s.<br>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1376\" height=\"768\" src=\"https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/05\/how-to-decide-between-the-three-main-grades-of-polypropylene-resin-4.png\" alt=\"Documento de cotizaci\u00f3n de proveedor de resina de polipropileno que muestra el c\u00f3digo de grado y los campos de MFI para el canal de abastecimiento de China&lt;br&gt;\" class=\"wp-image-912\" srcset=\"https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/05\/how-to-decide-between-the-three-main-grades-of-polypropylene-resin-4.png 1376w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/05\/how-to-decide-between-the-three-main-grades-of-polypropylene-resin-4-300x167.png 300w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/05\/how-to-decide-between-the-three-main-grades-of-polypropylene-resin-4-1024x572.png 1024w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/05\/how-to-decide-between-the-three-main-grades-of-polypropylene-resin-4-768x429.png 768w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/05\/how-to-decide-between-the-three-main-grades-of-polypropylene-resin-4-600x335.png 600w\" sizes=\"auto, (max-width: 1376px) 100vw, 1376px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Tomando la Decisi\u00f3n del Grado de Polipropileno<br><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Califique antes de comprometerse. Env\u00ede la RFQ alineada con la especificaci\u00f3n con tanto la familia (HP \/ RCP \/ ICP) como el c\u00f3digo de grado del espacio de nombres del productor en la misma l\u00ednea. Solicite el COA del productor con MFI, densidad y el n\u00famero de impacto o Tm relevante \u2014 luego ejecute un lote real antes de fijar el volumen anual.<br>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La selecci\u00f3n de la familia y la selecci\u00f3n del canal del productor siguen siendo una decisi\u00f3n, no dos. Una elecci\u00f3n de familia sin una elecci\u00f3n de canal deja la especificaci\u00f3n sin finalizar.<br>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Homopol\u00edmero para rigidez y menor costo; copol\u00edmero aleatorio para tuber\u00eda y claridad; copol\u00edmero de impacto para servicio bajo cero y con prueba de ca\u00edda \u2014 y debajo de cada uno, un nombre de productor desde el cual su proveedor realmente pueda enviar.<br>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Specifiers usually arrive at this decision the same way. A supplier sends a quote with a four-character grade code and an MFI number, and the question shifts from &#8220;which PP family&#8221; to &#8220;is this the right family for what I&#8217;m building.&#8221; For the China-sourced specifier, family selection and producer-channel selection are one decision, not two. [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":915,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[1],"tags":[68],"class_list":["post-916","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-grade-selection","tag-polypropylene"],"blocksy_meta":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to Decide Between the Three Main Grades of Polypropylene Resin - BASTONE<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/bastone-petrochem.com\/es\/decide-between-three-main-grades-polypropylene-resin\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Decide Between the Three Main Grades of Polypropylene Resin - BASTONE\" \/>\n<meta property=\"og:description\" content=\"Specifiers usually arrive at this decision the same way. A supplier sends a quote with a four-character grade code and an MFI number, and the question shifts from &#8220;which PP family&#8221; to &#8220;is this the right family for what I&#8217;m building.&#8221; For the China-sourced specifier, family selection and producer-channel selection are one decision, not two. 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