{"id":1862,"date":"2022-07-02T17:10:06","date_gmt":"2022-07-02T08:10:06","guid":{"rendered":"http:\/\/shokubai.mediawars.ne.jp\/ja\/?post_type=products&#038;p=1862"},"modified":"2025-12-19T10:27:47","modified_gmt":"2025-12-19T01:27:47","slug":"epostar","status":"publish","type":"products","link":"https:\/\/www.shokubai.co.jp\/en\/products\/detail\/epostar\/","title":{"rendered":"Melamine and Benzoguanamine Fine Particles: EPOSTAR\u2122 Series"},"content":{"rendered":"\n<div class=\"wp-block-my-gutenberg-my-block00 m_ancNav\"><ul class=\"anc_content\"><li><a href=\"#anc01\">Basic Information <\/a><\/li><li><a href=\"#anc02\">Features and Properties <\/a><\/li><li><a href=\"#anc04\">Product Details <\/a><\/li><li><a href=\"#anc03\">Applications<\/a><\/li><li><a href=\"#anc05\" title=\"\">Nippon Shokubai\u2019s Fine Particles<\/a><\/li><\/ul><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"anc01\">Basic Information\n<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-1 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p>EPOSTAR\u2122 are heat-cured, spherical fine particles with melamine and benzoguanamine resins as raw materials.<br>We offer nine types of standard item numbers, with three types of resin structures.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"271\" height=\"202\" src=\"\/en\/wordpress\/wp-content\/uploads\/2022\/07\/img_epostar_001.png\" alt=\"\" class=\"wp-image-1859\"\/><figcaption class=\"wp-element-caption\">Electron micrograph  <br>EPOSTAR\u2122 S12 (1.2 \u03bcm particle size)<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"anc02\">Features and Properties\n<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Excellent heat resistance and solvent resistance<\/li>\n\n\n\n<li>Particle size adjustable from 0.1 &#8211; 9\u03bcm<\/li>\n\n\n\n<li>High refractive index (n = 1.66) derived from a resin backbone densely containing nitrogen atoms.<\/li>\n\n\n\n<li>Exhibits a tendency to acquire a positive charge<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Chemical Name by EPOSTAR\u2122 Type<\/h4>\n\n\n\n<figure class=\"wp-block-flexible-table-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>MS, M05, L15<\/th><td>Benzoguanamine\/formaldehyde condensate\n<\/td><\/tr><tr><th>M30<\/th><td>Benzoguanamine\/melamine\/formaldehyde condensate\n<\/td><\/tr><tr><th>SS, S, FS, S6, S12<\/th><td>Melamine\/formaldehyde condensate\n<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"anc04\">Product Details<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Chemical Structure<\/h3>\n\n\n\n<figure class=\"wp-block-flexible-table-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>MS, M05, L15<\/th><th>M30<\/th><th>SS, S, FS, S6, S12<\/th><\/tr><tr><td>&nbsp;<img loading=\"lazy\" decoding=\"async\" width=\"169\" height=\"163\" class=\"wp-image-1860\" src=\"\/en\/wordpress\/wp-content\/uploads\/2022\/07\/img_epostar_002.gif\" alt=\"\"><\/td><td>&nbsp;<img loading=\"lazy\" decoding=\"async\" width=\"328\" height=\"163\" class=\"wp-image-1861\" src=\"\/en\/wordpress\/wp-content\/uploads\/2022\/07\/img_epostar_003.gif\" alt=\"\"><\/td><td>&nbsp;<img loading=\"lazy\" decoding=\"async\" width=\"169\" height=\"163\" class=\"wp-image-1863\" src=\"\/en\/wordpress\/wp-content\/uploads\/2022\/07\/img_epostar_004.gif\" alt=\"\"><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Properties<\/h3>\n\n\n\n<figure class=\"wp-block-flexible-table-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Type\n<\/th><th>Average Particle Diameter\n<br>\n          (\u03bcm)\n<\/th><th>Particle Size Distribution\n<\/th><th>Refractive Index\n<\/th><th>True Specific Gravity\n<\/th><\/tr><tr><td>MS<\/td><td style=\"text-align:center\">2<\/td><td rowspan=\"3\" style=\"text-align:center\">Broad<\/td><td rowspan=\"9\" style=\"text-align:center\">1.66<\/td><td rowspan=\"4\" style=\"text-align:center\">1.4<\/td><\/tr><tr><td>M05<\/td><td style=\"text-align:center\">5<\/td><\/tr><tr><td>L15<\/td><td style=\"text-align:center\">9<\/td><\/tr><tr><td>M30<\/td><td style=\"text-align:center\">3<\/td><td rowspan=\"6\" style=\"text-align:center\">Middle<\/td><\/tr><tr><td>SS<\/td><td style=\"text-align:center\">0.1<\/td><td rowspan=\"5\" style=\"text-align:center\">1.5<\/td><\/tr><tr><td>S<\/td><td style=\"text-align:center\">0.2<\/td><\/tr><tr><td>FS<sup>\u203b<\/sup><\/td><td style=\"text-align:center\">0.2<\/td><\/tr><tr><td>S6<\/td><td style=\"text-align:center\">0.4<\/td><\/tr><tr><td>S12<\/td><td style=\"text-align:center\">1.2<\/td><\/tr><\/tbody><\/table><figcaption>* FS is a low formalin type of S.\n<\/figcaption><\/figure>\n\n\n\n<p class=\"has-text-color\" style=\"color:#e60039\">* Please be sure to read the Chemical Products Safety Data Sheet (SDS) when handling this product.\n<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"anc03\">Applications<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-2 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"538\" src=\"https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2025\/09\/epostar_img_5-1024x538.jpg\" alt=\"Illustration  of toner additives\" class=\"wp-image-17755\" srcset=\"https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2025\/09\/epostar_img_5-1024x538.jpg 1024w, https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2025\/09\/epostar_img_5-300x158.jpg 300w, https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2025\/09\/epostar_img_5-768x403.jpg 768w, https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2025\/09\/epostar_img_5.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><a href=\"\/en\/particle\/case\/#anc04\" title=\"\">Toner additives<\/a><\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"538\" src=\"https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2025\/09\/epostar_imag_8-1-1024x538.jpg\" alt=\"Illustration  of light diffusion agents used in panel\" class=\"wp-image-17756\" srcset=\"https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2025\/09\/epostar_imag_8-1-1024x538.jpg 1024w, https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2025\/09\/epostar_imag_8-1-300x158.jpg 300w, https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2025\/09\/epostar_imag_8-1-768x403.jpg 768w, https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2025\/09\/epostar_imag_8-1.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><a href=\"\/en\/particle\/case\/#anc03\" title=\"\">Light diffusion agents<\/a><\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"538\" src=\"https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2025\/09\/epostar_img_6-1024x538.jpg\" alt=\"Illustration of matting agents used in coatings\" class=\"wp-image-17757\" srcset=\"https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2025\/09\/epostar_img_6-1024x538.jpg 1024w, https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2025\/09\/epostar_img_6-300x158.jpg 300w, https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2025\/09\/epostar_img_6-768x403.jpg 768w, https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2025\/09\/epostar_img_6.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><a href=\"\/en\/particle\/case\/#anc02\" title=\"\">Matting agents<\/a><\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Explore Related Case Studies and Solutions<\/strong><\/h2>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/en.www.solution.shokubai.co.jp\/case\/007\/\" target=\"_blank\" rel=\"noreferrer noopener\">Brightness Enhancement of Optical Films<\/a><\/div>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/en.www.solution.shokubai.co.jp\/case\/044\/\" target=\"_blank\" rel=\"noreferrer noopener\">Microparticles for Matte Coatings (High RI)<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"anc05\">Nippon Shokubai\u2019s Fine Particles<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/www.shokubai.co.jp\/en\/particle\/\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"340\" src=\"https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2025\/03\/NSB_bnr_banner_en.png\" alt=\"\" class=\"wp-image-16079\" style=\"width:500px\" srcset=\"https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2025\/03\/NSB_bnr_banner_en.png 1000w, https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2025\/03\/NSB_bnr_banner_en-300x102.png 300w, https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2025\/03\/NSB_bnr_banner_en-768x261.png 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/a><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Basic Information EPOSTAR\u2122 are heat-cured, spherical fine particles with melamine and benzoguanamine resins as [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"menu_order":0,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"cat_products":[89,136,169,273],"class_list":["post-1862","products","type-products","status-publish","format-standard","hentry","cat_products-divisions_01_04_02","cat_products-type_04_03_01","cat_products-functions_03_02_02","cat_products-uses_04_01_05"],"aioseo_notices":[],"acf":{"products_common_name":"","products_main_uses":"Toner additives, Light diffusion agents, Matting agents","products_same_series":"","products_same_uses":[{"ID":2316,"post_author":"1","post_date":"2022-07-03 11:33:53","post_date_gmt":"2022-07-03 02:33:53","post_content":"<!-- wp:my-gutenberg\/my-block00 -->\n<div class=\"wp-block-my-gutenberg-my-block00 m_ancNav\"><ul class=\"anc_content\"><li><a href=\"#anc01\">Basic Information <\/a><\/li><li><a href=\"#anc02\">Features and Properties <\/a><\/li><li><a href=\"#anc03\">Examples of Applications<\/a><\/li><li><a href=\"#anc04\">Product Details <\/a><\/li><li><a href=\"#anc05\" title=\"\">Nippon Shokubai\u2019s Fine Particles<\/a><\/li><\/ul><\/div>\n<!-- \/wp:my-gutenberg\/my-block00 -->\n\n<!-- wp:heading -->\n<h2 class=\"wp-block-heading\" id=\"anc01\">Basic Information\n<\/h2>\n<!-- \/wp:heading -->\n\n<!-- wp:paragraph -->\n<p>EPOSTAR\u2122 MA2003 are acrylic-styrene, crosslinked, perfectly spherical fine particles with an average particle diameter of 3 \u03bcm, which have been developed using Nippon Shokubai\u2019s proprietary technology.<br>EPOSTAR\u2122 MA2003 is highly rated for having excellent heat resistance, solvent resistance, and dispersibility, and for applications in light diffusion agents of various films.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:columns -->\n<div class=\"wp-block-columns\"><!-- wp:column -->\n<div class=\"wp-block-column\"><!-- wp:image {\"id\":2691,\"sizeSlug\":\"full\",\"linkDestination\":\"none\"} -->\n<figure class=\"wp-block-image size-full\"><img src=\"\/en\/wordpress\/wp-content\/uploads\/2022\/07\/img_epostar-ma_001.png\" alt=\"\" class=\"wp-image-2691\" \/><figcaption class=\"wp-element-caption\">SEM Photo\n\uff08MA2003\uff09<\/figcaption><\/figure>\n<!-- \/wp:image --><\/div>\n<!-- \/wp:column -->\n\n<!-- wp:column -->\n<div class=\"wp-block-column\"><!-- wp:image {\"id\":8961,\"sizeSlug\":\"full\",\"linkDestination\":\"none\"} -->\n<figure class=\"wp-block-image size-full\"><img src=\"\/en\/wordpress\/wp-content\/uploads\/2022\/11\/img_epostar-ma_002.png\" alt=\"Graph of Frequency , Volume\" class=\"wp-image-8961\" \/><figcaption class=\"wp-element-caption\">Particle Size Distribution Diagram (MA2003)<\/figcaption><\/figure>\n<!-- \/wp:image --><\/div>\n<!-- \/wp:column --><\/div>\n<!-- \/wp:columns -->\n\n<!-- wp:heading -->\n<h2 class=\"wp-block-heading\" id=\"anc02\">Features and Properties\n<\/h2>\n<!-- \/wp:heading -->\n\n<!-- wp:list {\"ordered\":true} -->\n<ol class=\"wp-block-list\"><!-- wp:list-item -->\n<li>Excellent light diffusion performance<\/li>\n<!-- \/wp:list-item -->\n\n<!-- wp:list-item -->\n<li>Good dispersibility in solvents and resins such as polyolefin<\/li>\n<!-- \/wp:list-item --><\/ol>\n<!-- \/wp:list -->\n\n<!-- wp:heading -->\n<h2 class=\"wp-block-heading\" id=\"anc03\">Examples of Applications<\/h2>\n<!-- \/wp:heading -->\n\n<!-- wp:list -->\n<ul class=\"wp-block-list\"><!-- wp:list-item -->\n<li>Light diffusion agents for optical films<\/li>\n<!-- \/wp:list-item --><\/ul>\n<!-- \/wp:list -->\n\n<!-- wp:heading -->\n<h2 class=\"wp-block-heading\" id=\"anc04\">Product Details\n<\/h2>\n<!-- \/wp:heading -->\n\n<!-- wp:heading {\"level\":3} -->\n<h3 class=\"wp-block-heading\">Composition\n<\/h3>\n<!-- \/wp:heading -->\n\n<!-- wp:paragraph -->\n<p>Acrylic-Styrene Crosslinked Substance<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:heading {\"level\":3} -->\n<h3 class=\"wp-block-heading\">List of Typical Properties of Products\n<\/h3>\n<!-- \/wp:heading -->\n\n<!-- wp:heading {\"level\":4} -->\n<h4 class=\"wp-block-heading\">Acrylic-Styrene Fine Particles<\/h4>\n<!-- \/wp:heading -->\n\n<!-- wp:flexible-table-block\/table -->\n<figure class=\"wp-block-flexible-table-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Type\n<\/th><th>Average Particle Diameter\n<br>(\u03bcm)\n<\/th><th>Refractive Index\n<\/th><th>True Specific Gravity\n<\/th><\/tr><tr><th>MA2003<\/th><td style=\"text-align:center\">3<\/td><td style=\"text-align:center\">1.56<\/td><td style=\"text-align:center\">1.2<\/td><\/tr><\/tbody><\/table><\/figure>\n<!-- \/wp:flexible-table-block\/table -->\n\n<!-- wp:heading {\"level\":3} -->\n<h3 class=\"wp-block-heading\">Heat Resistance Data\n<\/h3>\n<!-- \/wp:heading -->\n\n<!-- wp:flexible-table-block\/table -->\n<figure class=\"wp-block-flexible-table-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th rowspan=\"2\">Type<\/th><th colspan=\"2\">Thermal Weight Loss (%)\n<\/th><th rowspan=\"2\">Thermal Decomposition Temperature (\u00b0C)\n<\/th><\/tr><tr><th>100\u2103<\/th><th>200\u00b0C\n<\/th><\/tr><tr><th>MA2003<\/th><td style=\"text-align:center\">-0.6<\/td><td style=\"text-align:center\">-2.0<\/td><td style=\"text-align:center\">284<\/td><\/tr><\/tbody><\/table><\/figure>\n<!-- \/wp:flexible-table-block\/table -->\n\n<!-- wp:heading {\"level\":4} -->\n<h4 class=\"wp-block-heading\">Measurement Method\n<\/h4>\n<!-- \/wp:heading -->\n\n<!-- wp:heading {\"level\":5} -->\n<h5 class=\"wp-block-heading\">\uff081\uff09 Thermal Weight Loss (%)\n<\/h5>\n<!-- \/wp:heading -->\n\n<!-- wp:paragraph -->\n<p>Weight reduction at the time of reaching the prescribed temperature, based on the weight at 100\u00b0C.\n<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:heading {\"level\":5} -->\n<h5 class=\"wp-block-heading\">\uff082\uff09 Thermal Decomposition Temperature\n<\/h5>\n<!-- \/wp:heading -->\n\n<!-- wp:paragraph -->\n<p>Temperature when a notable weight reduction starts to occur during the gradual heating of fine particles.\n<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph {\"style\":{\"color\":{\"text\":\"#e60039\"}}} -->\n<p class=\"has-text-color\" style=\"color:#e60039\">* Please be sure to read the Chemical Products Safety Data Sheet (SDS) when handling this product.\n<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:heading -->\n<h2 class=\"wp-block-heading\" id=\"anc05\">Nippon Shokubai\u2019s Fine Particles<\/h2>\n<!-- \/wp:heading -->\n\n<!-- wp:image {\"lightbox\":{\"enabled\":false},\"id\":16079,\"width\":\"500px\",\"sizeSlug\":\"full\",\"linkDestination\":\"custom\"} -->\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/www.shokubai.co.jp\/en\/particle\/\"><img src=\"https:\/\/www.shokubai.co.jp\/en\/wordpress\/wp-content\/uploads\/2025\/03\/NSB_bnr_banner_en.png\" alt=\"\" class=\"wp-image-16079\" style=\"width:500px\" \/><\/a><\/figure>\n<!-- \/wp:image -->","post_title":"Acrylic-Styrene Fine Particles: EPOSTAR\u2122 MA2003","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"epostar-ma","to_ping":"","pinged":"","post_modified":"2025-12-23 12:08:06","post_modified_gmt":"2025-12-23 03:08:06","post_content_filtered":"","post_parent":0,"guid":"http:\/\/shokubai.mediawars.ne.jp\/ja\/?post_type=products&#038;p=2316","menu_order":0,"post_type":"products","post_mime_type":"","comment_count":"0","filter":"raw"}],"is_dev_products":false,"memo":"\u5b8c\u4e86\u3000\u4e0a\u7530","show_hreflang":["ja","cn","kr"]},"_links":{"self":[{"href":"https:\/\/www.shokubai.co.jp\/en\/wp-json\/wp\/v2\/products\/1862"}],"collection":[{"href":"https:\/\/www.shokubai.co.jp\/en\/wp-json\/wp\/v2\/products"}],"about":[{"href":"https:\/\/www.shokubai.co.jp\/en\/wp-json\/wp\/v2\/types\/products"}],"author":[{"embeddable":true,"href":"https:\/\/www.shokubai.co.jp\/en\/wp-json\/wp\/v2\/users\/1"}],"version-history":[{"count":28,"href":"https:\/\/www.shokubai.co.jp\/en\/wp-json\/wp\/v2\/products\/1862\/revisions"}],"predecessor-version":[{"id":18940,"href":"https:\/\/www.shokubai.co.jp\/en\/wp-json\/wp\/v2\/products\/1862\/revisions\/18940"}],"wp:attachment":[{"href":"https:\/\/www.shokubai.co.jp\/en\/wp-json\/wp\/v2\/media?parent=1862"}],"wp:term":[{"taxonomy":"cat_products","embeddable":true,"href":"https:\/\/www.shokubai.co.jp\/en\/wp-json\/wp\/v2\/cat_products?post=1862"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}