{"id":1016,"date":"2026-06-28T14:22:37","date_gmt":"2026-06-28T06:22:37","guid":{"rendered":"https:\/\/bastone-petrochem.com\/?p=1016"},"modified":"2026-08-13T09:27:20","modified_gmt":"2026-08-13T01:27:20","slug":"copolymer-polypropylene-manufacturing-process","status":"publish","type":"post","link":"https:\/\/bastone-petrochem.com\/es\/copolymer-polypropylene-manufacturing-process\/","title":{"rendered":"C\u00f3mo se fabrica el copol\u00edmero de polipropileno"},"content":{"rendered":"<p class=\"wp-block-paragraph\">El polipropileno copol\u00edmero aleatorio y de impacto recorre el mismo tren de reactores hasta una decisi\u00f3n. O se co-alimenta etileno en el bucle principal, o se a\u00f1ade un segundo reactor en fase gas aguas abajo para hacer crecer una fase de caucho dentro del homopol\u00edmero terminado.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Esa \u00fanica bifurcaci\u00f3n es la diferencia entre una resina para tuber\u00eda transparente y un grado automotriz resistente a temperaturas bajo cero. Todo lo anterior es qu\u00edmica compartida; todo lo posterior es la misma l\u00ednea de acabado.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La secuencia a continuaci\u00f3n va desde la alimentaci\u00f3n de propileno en adelante, nombrando la propiedad de la resina y el espacio de grado que entrega cada paso. Saber d\u00f3nde se establece una propiedad permite verificar de forma realista un COA en lugar de confiar ciegamente en la hoja de especificaciones.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Paso 1 \u2014 La Alimentaci\u00f3n de Propileno y el Sistema de Catalizador Ziegler-Natta<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"\/es\/product-category\/synthetic-resin\/pp\/\">PP Copol\u00edmero<\/a> La producci\u00f3n comienza con propileno de grado polim\u00e9rico (t\u00edpicamente \u226599.5% de pureza) y un catalizador Ziegler-Natta soportado. El catalizador establece la estereoqu\u00edmica antes de que crezca una sola cadena: decide la isotacticidad, que es lo que hace que el PP comercial sea r\u00edgido.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">El sistema industrial moderno es TiCl\u2084 soportado sobre MgCl\u2082, activado por un co-catalizador de trietilaluminio. Dos donantes realizan el ajuste fino: un donante interno (diisobutil ftalato) y un alcoxisilano externo como el ciclohexilmetildimetoxisilano.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Los donantes no son un adorno opcional. Controlan qu\u00e9 tan limpiamente la cadena se mantiene isot\u00e1ctica y qu\u00e9 tan uniformemente se incorpora el etileno en una ruta de copol\u00edmero.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">El PP isot\u00e1ctico comercial alcanza un \u00edndice de isotacticidad del 85-95%, un resultado directo del paquete de donantes. Un catalizador de sitio \u00fanico metaloceno es la alternativa de distribuci\u00f3n m\u00e1s estrecha, pero tiene poco uso en productos b\u00e1sicos.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La pureza de la alimentaci\u00f3n es la restricci\u00f3n silenciosa. Los sitios Ziegler-Natta son envenenados por trazas de humedad, ox\u00edgeno y azufre, por lo que el propileno se seca y se trata con lechos de guarda antes del reactor.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Paso 2 \u2014 Polimerizaci\u00f3n Primaria en el Reactor de Bucle en Masa<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La polimerizaci\u00f3n primaria ocurre en un reactor de bucle con ba\u00f1o l\u00edquido que utiliza propileno l\u00edquido como su propio disolvente a aproximadamente 60-80 \u00b0C y 30-40 atm. Aqu\u00ed es donde se construye la matriz de homopol\u00edmero isot\u00e1ctico que comparte toda ruta de copol\u00edmero.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Las cadenas crecen a partir de los sitios activos de TiCl\u2084 mientras la mezcla circula. Se dosifica hidr\u00f3geno como agente de transferencia de cadena: m\u00e1s hidr\u00f3geno significa cadenas m\u00e1s cortas, lo que significa un mayor \u00edndice de fluidez.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Esa dosis de hidr\u00f3geno es la \u00fanica palanca que establece el objetivo del <a href=\"https:\/\/bastone-petrochem.com\/es\/decide-between-three-main-grades-polypropylene-resin\/\">\u00edndice de fluidez<\/a> del grado, ajustado aqu\u00ed mismo en el bucle.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Los trenes comerciales funcionan con dos bucles en serie. La ruta en fase masa limita el etileno a aproximadamente 5 wt%, por lo que cualquier grado que necesite m\u00e1s comon\u00f3mero o una fase de caucho se mueve aguas abajo, donde comienza la bifurcaci\u00f3n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ejecutar solo propileno a trav\u00e9s de estos bucles y la salida es <a href=\"https:\/\/bastone-petrochem.com\/es\/what-is-homopolymer-polypropylene\/\">polipropileno homopol\u00edmero<\/a>, la l\u00ednea base r\u00edgida que funde a 160-171 \u00b0C. Ambas rutas de copol\u00edmero se ramifican desde esta misma salida del bucle; lo que cambia es si el etileno entra y cu\u00e1ndo.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Paso 3 \u2014 La Bifurcaci\u00f3n Aleatorio vs. Impacto<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La decisi\u00f3n aleatorio vs. impacto es una elecci\u00f3n f\u00edsica en el tren. Co-alimentar etileno en los bucles para un copol\u00edmero aleatorio, o mantener la matriz del bucle y a\u00f1adir un segundo reactor en fase gas para hacer crecer una fase de caucho para un copol\u00edmero 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\/06\/copolymer-polypropylene-manufacturing-process-1.png\" alt=\"Bifurcaci\u00f3n del tren de reactores en el proceso de fabricaci\u00f3n de copol\u00edmero de polipropileno, reactores de bucle dividi\u00e9ndose hacia un segundo reactor en fase gaseosa\" class=\"wp-image-1014\" srcset=\"https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/06\/copolymer-polypropylene-manufacturing-process-1.png 1376w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/06\/copolymer-polypropylene-manufacturing-process-1-300x167.png 300w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/06\/copolymer-polypropylene-manufacturing-process-1-1024x572.png 1024w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/06\/copolymer-polypropylene-manufacturing-process-1-768x429.png 768w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/06\/copolymer-polypropylene-manufacturing-process-1-18x10.png 18w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/06\/copolymer-polypropylene-manufacturing-process-1-600x335.png 600w\" sizes=\"auto, (max-width: 1376px) 100vw, 1376px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Mismos bucles aguas arriba, dos resinas diferentes. La taxonom\u00eda de <a href=\"https:\/\/bastone-petrochem.com\/es\/what-is-copolymer-polypropylene\/\">qu\u00e9 es el polipropileno copol\u00edmero<\/a> se encuentra en el compa\u00f1ero de definici\u00f3n; el enfoque aqu\u00ed es d\u00f3nde divergen las rutas.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Resultado de propiedad<\/th><th>Ruta aleatoria<\/th><th>Ruta de impacto<\/th><\/tr><\/thead><tbody><tr><td>Entrada de etileno<\/td><td>Bucles, 2.7-8 wt%<\/td><td>Segundo reactor como caucho<\/td><\/tr><tr><td>Reactores utilizados<\/td><td>Solo dos bucles<\/td><td>Bucles + reactor en fase gas<\/td><\/tr><tr><td>Punto de fusi\u00f3n<\/td><td>~135-150 \u00b0C<\/td><td>Tm de la matriz retenida<\/td><\/tr><tr><td>Claridad<\/td><td>Alta (transparente)<\/td><td>Determinada por el tama\u00f1o de dominio<\/td><\/tr><tr><td>Tenacidad al impacto en fr\u00edo<\/td><td>Modesta<\/td><td>Varias veces mayor<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Ruta Aleatoria \u2014 Etileno Co-Alimentado en los Bucles<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Alimentar etileno en los bucles al 2.7-8 wt% inserta unidades de etileno aleatoriamente a lo largo de la cadena. Eso interrumpe la secuencia isot\u00e1ctica, por lo que la cristalinidad \u2014 y el punto de fusi\u00f3n \u2014 disminuye, intercambiando rigidez por claridad.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Un grado aleatorio Spheripol medido con 2.7-3.0 wt% de etileno se sit\u00faa en una Tm de 144.6 \u00b0C, muy por debajo de los 160-171 \u00b0C del homopol\u00edmero, con una fracci\u00f3n soluble en xileno del 4.8 wt%. Se fabrica solo en dos bucles, sin reactor en fase gas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">PetroChina Dushanzi T4401 es la salida real de esta ruta aleatoria de reactor de bucle. El grado para tuber\u00eda PP-R tiene un MFR de 0.25 g\/10 min (230 \u00b0C\/2.16 kg, ASTM D1238\/ISO 1133), densidad 0.90 g\/cm\u00b3, clasificado para servicio de agua caliente a 95 \u00b0C.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Una verificaci\u00f3n de realismo de la hoja de especificaciones: algunas p\u00e1ginas de proveedores listan T4401 a 164-170 \u00b0C, que es el rango del homopol\u00edmero. Un copol\u00edmero aleatorio genuino no puede fundir tan alto \u2014 la inserci\u00f3n aleatoria de etileno lo impide f\u00edsicamente. Espere ~135-150 \u00b0C.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ruta de Impacto \u2014 Una Fase de Caucho Crecida en un Segundo Reactor<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">La ruta de impacto mantiene la salida del bucle como una matriz r\u00edgida de homopol\u00edmero. Enruta esa matriz a un segundo reactor de lecho fluidizado en fase gas (70-80 \u00b0C, 25-35 bar), donde el caucho etileno-propileno (EPR) crece in-situ como una fase dispersa al 5-15 wt%, a veces hasta ~25%. Esos dominios absorben la energ\u00eda de impacto que la matriz r\u00edgida no puede.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cCopol\u00edmero en bloque\u201d es el nombre comercial com\u00fan, pero es un nombre inapropiado. La ruta de impacto no produce ninguna cadena con bloques unidos covalentemente \u2014 produce una aleaci\u00f3n heterof\u00e1sica: dominios de caucho EPR discretos dispersos en una matriz de homopol\u00edmero isot\u00e1ctico. Es por eso que el impacto y la rigidez se ajustan casi independientemente, por fracci\u00f3n de caucho en lugar de arquitectura de cadena.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">El tama\u00f1o del dominio de caucho es la palanca de claridad versus impacto, determinada por el peso molecular del EPR en relaci\u00f3n con la matriz. Los dominios gruesos de ~1 \u03bcm dispersan la luz hasta un 98.8% de turbidez (opaco) con un impacto de 14.5 kJ\/m\u00b2. Los dominios finos de ~100 nm reducen la turbidez al 13.5% (casi transparente) mientras elevan el impacto a 25.1 kJ\/m\u00b2.<\/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\/06\/copolymer-polypropylene-manufacturing-process-2.png\" alt=\"Comparaci\u00f3n del tama\u00f1o del dominio de caucho en polipropileno copol\u00edmero de impacto, dispersi\u00f3n opaca gruesa versus fina clara&lt;\/s&gt;\" class=\"wp-image-1015\" srcset=\"https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/06\/copolymer-polypropylene-manufacturing-process-2.png 1376w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/06\/copolymer-polypropylene-manufacturing-process-2-300x167.png 300w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/06\/copolymer-polypropylene-manufacturing-process-2-1024x572.png 1024w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/06\/copolymer-polypropylene-manufacturing-process-2-768x429.png 768w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/06\/copolymer-polypropylene-manufacturing-process-2-18x10.png 18w, https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/06\/copolymer-polypropylene-manufacturing-process-2-600x335.png 600w\" sizes=\"auto, (max-width: 1376px) 100vw, 1376px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">El EPR de bajo peso molecular se dispersa en dominios m\u00e1s peque\u00f1os \u2014 mejor claridad y tenacidad del mismo proceso. Esta salida aterriza en el <a href=\"\/es\/product\/pp-k8003\/\">espacio de grado de copol\u00edmero de impacto (ICP)<\/a> para aplicaciones de temperatura bajo cero y pruebas de ca\u00edda.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Paso 4 \u2014 Desgasificaci\u00f3n, Compounding y Peletizaci\u00f3n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Despu\u00e9s de la polimerizaci\u00f3n, el polvo a\u00fan contiene mon\u00f3mero sin reaccionar, no lleva estabilizador y existe como \"fluff\" en lugar de pellets. La cadena de acabado soluciona los tres \u2014 el paso que la mayor\u00eda de los explicadores de procesos omiten.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Primero, el pol\u00edmero se desgasifica y desgasifica para eliminar y recuperar el propileno no reaccionado (y etileno, en grados de copol\u00edmero) para reciclarlo al reactor. Omitir una desgasificaci\u00f3n limpia y las superficies de mon\u00f3mero residual aparecen m\u00e1s tarde como olor y huecos.<\/s>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Luego viene la composici\u00f3n de aditivos. Un paquete estabilizador de antioxidantes y captadores de \u00e1cido se mezcla en estado fundido con el polvo, junto con cualquier<\/s> <a href=\"https:\/\/bastone-petrochem.com\/es\/what-additives-are-used-polypropylene\/\">modificador de propiedades que el grado requiera<\/s><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Un clarificador pertenece aqu\u00ed, no en el reactor \u2014 la niebla de 12.5% en ese grado aleatorio provino de 3000 ppm de un clarificador de sorbitol en el compounder, no de la polimerizaci\u00f3n.<\/s>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">El fundido se peletiza luego en gr\u00e1nulos uniformes que alimentan limpiamente la extrusora o moldeadora de un cliente. El control de calidad del grado cierra el ciclo: el \u00edndice de fluidez se mide seg\u00fan ASTM D1238 \/ ISO 1133 a 230 \u00b0C\/2.16 kg. Ese n\u00famero en el COA del T4401 confirma que la dosis de hidr\u00f3geno del Paso 2 alcanz\u00f3 su objetivo.<\/s>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">La Imagen Completa, de Principio a Fin<\/s><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La palanca que lo decide todo es peque\u00f1a y temprana: si el etileno entra en los bucles o como una fase de caucho separada aguas abajo. Una co-alimentaci\u00f3n produce una resina aleatoria clara y de menor Tm; un reactor adicional produce una aleaci\u00f3n heterof\u00e1sica resistente al fr\u00edo.<\/s>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Un COA tambi\u00e9n se lee de manera diferente una vez que conoces el tren. Tm, niebla, impacto y MFI se remontan cada uno a una etapa \u2014 comon\u00f3mero en el bucle, tama\u00f1o del dominio de caucho en el segundo reactor, clarificador y dosis de hidr\u00f3geno al final. L\u00e9elos como salidas del proceso, y un valor poco fiable como una Tm de copol\u00edmero aleatorio de 168 \u00b0C se delata a s\u00ed mismo.<\/s>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Random and impact copolymer polypropylene run the same reactor train up to one decision. Either ethylene gets co-fed into the main loop, or a second gas-phase reactor is added downstream to grow a rubber phase inside the finished homopolymer. That one fork is the difference between a clear pipe resin and a sub-zero-tough automotive grade. [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":1014,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1016","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"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 Copolymer Polypropylene Is Manufactured - 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\/copolymer-polypropylene-manufacturing-process\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How Copolymer Polypropylene Is Manufactured - BASTONE\" \/>\n<meta property=\"og:description\" content=\"Random and impact copolymer polypropylene run the same reactor train up to one decision. 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