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href="http://www.cdcfah.com/cp/first-_huagong/">化工</a>?<a href="http://www.cdcfah.com/cp/second-_sysqm/">實驗室器皿</a>?<a href="http://www.cdcfah.com/cp/third-sysqm_qtsysyp/">其他實驗室用品</a>?揚州2-甲基四氫呋喃公司哪家好上海蔚云化工供應(yīng)</p><div id="7mj8jgn" class="leftbox clearfix"><h1>揚州2-甲基四氫呋喃公司哪家好上海蔚云化工供應(yīng)</h1><div id="1am4qsu" class="proBig"><div id="wlnco2h" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shweiyun/637389624283199578/5832986.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="1mo9prt" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shweiyun/637389624283199578/5832986.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="gacw3vx" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>揚州2-甲基四氫呋喃公司哪家好,2-甲基四氫呋喃</p><p><span>***更新：</span>2020-11-04 04:24:13</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="eip4krd" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海蔚云化工有限公司</a></p><p><span>聯(lián)系人：</span>盛志華</p><p><span>郵箱: </span>3273929241@qq.com</p><p><span>電話: </span>18721726651</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span>http://www.weiyunhuagong.com</p><p><span>手機: </span>021-52909928</p><p><span>地址: </span>靜安區(qū)靈石路709號55幢A2113室</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="2ikzlsp" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="hb3r8xe" class="box"><p><p style="text-indent:25px">四氫呋喃是一種重要的有機化工及精細(xì)化工原料，普遍應(yīng)用于樹脂溶劑（磁帶涂層、PVC表面涂層、清洗PVC反應(yīng)器、脫除PVC薄膜、玻璃紙涂層、塑料印刷油墨，揚州2-甲基四氫呋喃公司哪家好、熱塑性聚氨酯涂層）；反應(yīng)溶劑（格式試劑、烷基堿金屬化合物和芳基堿金屬化合物、氫化鋁和氫化硼、甾族化合物和大分子有機聚合物）；化學(xué)中間產(chǎn)物（聚合生成PTMEG、天然氣加味劑）；色譜溶劑（凝膠滲透色譜法）。聚四氫呋喃主要用作嵌段聚氨酯或嵌段聚醚聚酯的軟鏈段。由平均分子量為1000的聚四氫呋喃制得的嵌段聚氨酯橡膠，可用作輪胎、傳動帶、墊圈等;也可用于涂料、人造革、薄膜等，揚州2-甲基四氫呋喃公司哪家好。制得的嵌段聚醚聚酯為熱塑性彈性體。平均分子量為2000的聚四氫呋喃，可用以制聚氨酯彈性纖維。由聚四氫呋喃制成的嵌段聚氨酯具有良好的抗凝血性，揚州2-甲基四氫呋喃公司哪家好，可用作醫(yī)用高分子材料。四氫呋喃可用作溶劑、有機合成的原料。揚州2-甲基四氫呋喃公司哪家好</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="揚州2-甲基四氫呋喃公司哪家好,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389624283199578/5832986.png"></div><p style="text-indent:25px">應(yīng)用實例：鹽酸曲馬多合成中的應(yīng)用鹽酸曲馬多，在抗HIV藥替普那韋合成中的應(yīng)用替普那韋，在血管緊張素轉(zhuǎn)化酶控制劑馬來酸依那普利合成中的應(yīng)用馬來酸依那普利，在抗***藥氟康唑合成中的應(yīng)用氟康唑，在抗藥三尖杉酯堿合成中的應(yīng)用，在抗抑郁藥鹽酸安非他酮合成中的應(yīng)用芳樟醇芳香酮，在芳樟醇/香酮合成中的應(yīng)用，在農(nóng)藥草銨膦合成中的應(yīng)用，在聯(lián)苯醇的合成中應(yīng)用。 MeTHF凝固點為-136℃，因而它可以替代THF用于低溫下有機鋰反應(yīng)。在有機鋰化學(xué)中，使用MeTHF作溶劑與THF相比，不僅分離方便，而且所得的鋰。揚州2-甲基四氫呋喃公司哪家好甲基四氫呋喃主要用作樹脂、橡膠、乙基纖維素等。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="揚州2-甲基四氫呋喃公司哪家好,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389624027184007/8887733.png"></div><p style="text-indent:25px">聚四氫呋喃二醇的工業(yè)化生產(chǎn)工藝根據(jù)催化劑的不同主要有氟磺酸催化聚合工藝、乙酸酐-高氯酯催化聚合工藝和雜多酸催化聚合工藝。其中氟磺酸催化工藝對設(shè)備材質(zhì)要求較高，造價昂貴，所需氟磺酸的量大。工業(yè)化的乙酸酐-高氯酸催化工藝，由THF原料經(jīng)二乙酸酯中間體制取PTMEG，副產(chǎn)物為乙酸甲酯和甲醇，生產(chǎn)成本較氟磺酸法低。開發(fā)的雜多酸催化工藝，采用由Mo、W、V的氧化物與磷酸反應(yīng)制得多聚酸，如十二聚磷鎢酸為催化劑，一步法制得PTMEG，且催化劑為固態(tài)，可回收，是一種新工藝。實驗室制備PTMEG：在反應(yīng)釜中加入四氫呋喃，溫度降到-5℃以下，于強烈攪拌下滴加發(fā)煙硫酸催化劑，保持反應(yīng)物料低溫，攪拌下加入定量的水，升溫至70～90℃，蒸出未反應(yīng)的四氫呋喃單體，經(jīng)靜置分層、中和過渡、抽真空等工序后，制得聚四氫呋喃二醇。</p><p style="text-indent:25px">幾種溶解性能良好的化工溶劑,被稱為都能溶劑.二甲基亞砜普遍用作溶劑和反應(yīng)試劑,特別是丙烯腈聚合反應(yīng)中作加工溶劑和抽絲溶劑,作聚氨酯合成及抽絲溶劑,作聚酰胺,聚酰亞胺和聚砜樹脂的合成溶劑,以及芳烴,丁二烯抽提溶劑和合成氯氟苯胺的溶劑等.四氫呋喃具有低毒、低沸點、流動性好等特點,是一種重要的有機合成原料和優(yōu)良的溶劑,具有普遍的用途,四氫呋喃對許多有機物有良好的溶解性,它能溶解除聚乙烯,聚丙烯及氟樹脂以外的所有有機化合物,特別是對聚氯乙烯,聚偏氯乙烯,和叮苯胺有良好的溶解作用,有都能溶劑之稱。四氫呋喃與水能混溶。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="揚州2-甲基四氫呋喃公司哪家好,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389624164107853/4550822.png"></div><p style="text-indent:25px">PTMEA至PTMEG轉(zhuǎn)化的結(jié)果是聚合物料中留下了催化劑甲醇鈉(NaOMe)。要去除催化劑，首先用20%硫酸鎂水溶液與PTMEG中的甲醇鈉中和，反應(yīng)生成氫氧化鎂和硫酸鈉鹽，然后PTMEG 產(chǎn)品物料通過兩級干燥過程將其中所有的氫氧化鎂和硫酸鈉鹽結(jié)晶析出。干燥脫水后的PTMEG 連同結(jié)晶顆粒一起被通過“板框式”壓濾機過濾系統(tǒng)，以去除其中的固體結(jié)晶顆粒。窄化處理工藝過程部分提供了對PTMEG 的之后凈化，并通過去除產(chǎn)品中的低分子量聚合物，對聚合物產(chǎn)品的分子量（MW）分布進行之后的窄化調(diào)整。這是通過兩級工藝過程實現(xiàn)的。經(jīng)初級工藝過程的“真空脫氣”后除去水、氮氣等不凝氣，聚合物產(chǎn)品被輸送到短程蒸餾來完成之后一級工藝過程，在此過程中，低分子聚合被脫除。脫氣和短程蒸餾都備有冷阱用來凝聚低分子量聚合物。甲基四氫呋喃是作為綠色溶劑替代四氫呋喃的。鎮(zhèn)江2-甲基四氫呋喃生產(chǎn)線</p><p style="text-indent:25px">THF經(jīng)硫化氫處理生成四氫硫酚，可作燃料氣中的臭味劑。揚州2-甲基四氫呋喃公司哪家好</p><p style="text-indent:25px">四氫呋喃THF主要用作生產(chǎn)原料和溶劑，但是它卻是在世界衛(wèi)生組織國際ai癥研究機構(gòu)公布的致ai物清單初步整理參考中，四氫呋喃在2B類致ai物清單中。四氫呋喃，是一個雜環(huán)有機化合物。屬于醚類，是芳香族化合物呋喃的完全氫化產(chǎn)物，是一種無色、可與水混溶、在常溫常壓下有較小粘稠度的有機液體。對于它的檢測，除了使用氣體檢測儀，我們還可以使用GASTEC四氫呋喃檢測管來快速且精確地檢測。四氫呋喃檢測管在使用時只需配備上GASTEC的手泵即可簡單的完成檢測，氣體檢測管法作為一種簡單、快速、直讀的檢測方法，具有其獨特的優(yōu)勢，在很多國家，檢測管法作為精密檢測方法的一種補充，得到了普遍的應(yīng)用。這款四氫呋喃氣體檢測管檢測快速，檢測結(jié)果較準(zhǔn)可靠。揚州2-甲基四氫呋喃公司哪家好</p><p style="text-indent:25px">上海蔚云化工有限公司屬于化工的高新企業(yè)，技術(shù)力量雄厚。公司致力于為客戶提供安全、質(zhì)量有保證的良好產(chǎn)品及服務(wù)，是一家私營有限責(zé)任公司企業(yè)。公司業(yè)務(wù)涵蓋環(huán)戊酮，甲基異丙基酮，丙二胺，二甘醇胺，價格合理，品質(zhì)有保證，深受廣大客戶的歡迎。上海蔚云化工自成立以來，一直堅持走正規(guī)化、專業(yè)化路線，得到了廣大客戶及社會各界的普遍認(rèn)可與大力支持。</p></p><br 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