{"id":593660,"date":"2024-11-05T21:32:16","date_gmt":"2024-11-05T21:32:16","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/iso-148981999\/"},"modified":"2024-11-05T21:32:16","modified_gmt":"2024-11-05T21:32:16","slug":"iso-148981999","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/iso\/iso-148981999\/","title":{"rendered":"ISO 14898:1999"},"content":{"rendered":"<p>La pr\u00e9sente Norme internationale sp\u00e9cifie des m\u00e9thodes de mesurage de l&#039;acidit\u00e9 des isocyanates aromatiques et<\/p>\n<p>de leurs pr\u00e9polym\u00e8res utilis\u00e9s comme mati\u00e8res premi\u00e8res pour polyur\u00e9thanne. La m\u00e9thode A consiste en un titrage<\/p>\n<p>direct sans blanc, applicable avant tout aux produits d\u00e9riv\u00e9s du m\u00e9thyl\u00e8ne-bis-(4-ph\u00e9nylisocyanate) brut ou modifi\u00e9,<\/p>\n<p>des polym\u00e9thyl\u00e8nes polyph\u00e9nylisocyanates et du toluyl\u00e8ne-diisocyanate caract\u00e9ris\u00e9s par des niveaux d&#039;acidit\u00e9<\/p>\n<p>mod\u00e9r\u00e9e \u00e0 \u00e9lev\u00e9e (. 100 \u00b5g\/g). La m\u00e9thode B, qui, en revanche, utilise un blanc, s&#039;applique aux isocyanates<\/p>\n<p>purifi\u00e9s, bruts ou modifi\u00e9s d\u00e9riv\u00e9s du m\u00e9thyl\u00e8ne-bis-(4-ph\u00e9nylisocyanate), du polym\u00e9thyl\u00e8ne polyph\u00e9nylisocyanate<\/p>\n<p>et du toluyl\u00e8ne-diisocyanate caract\u00e9ris\u00e9s par de faibles niveaux d&#039;acidit\u00e9 (&lt; 100 \u00b5g\/g). Ces m\u00e9thodes peuvent<\/p>\n<p>\u00e9galement \u00eatre utilis\u00e9es avec des m\u00e9langes d&#039;isom\u00e8res de toluyl\u00e8ne-diisocyanate, de m\u00e9thyl\u00e8ne-bis-(4-ph\u00e9nylisocyanate),<\/p>\n<p>et de polym\u00e9thyl\u00e8ne polyph\u00e9nylisocyanate. D&#039;autres isocyanates aromatiques peuvent \u00eatre analys\u00e9s<\/p>\n<p>selon cette m\u00e9thode si l&#039;on prend soin de v\u00e9rifier son ad\u00e9quation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Plastiques \u2014 Isocyanates aromatiques utilis\u00e9s pour la production de polyur\u00e9thanne \u2014 D\u00e9termination de l&#8217;acidit\u00e9<\/b><\/p>\n<table style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/iso\/\"><b>ISO<\/b><\/a><\/td>\n<td>1999-10<\/td>\n<td>14<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":593672,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1178,2634],"product_tag":[],"class_list":{"0":"post-593660","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-83-080-10","7":"product_cat-iso","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/593660","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/593672"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=593660"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=593660"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=593660"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}