鹽城2-甲基四氫呋喃廠(chǎng)家有哪些上海蔚云化工供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買(mǎi)產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="聚四亞甲基醚二醇，又稱(chēng)聚(四氫呋喃)，簡(jiǎn)稱(chēng)PTMEG，是一種重要的高分子材料，用途十分普遍。氨綸工業(yè)PTMEG的主要領(lǐng)域是氨綸工業(yè)。氨綸是一種性能優(yōu)良的彈性纖維，主要用于生產(chǎn)內(nèi)衣、泳衣、運(yùn)動(dòng)裝和襪類(lèi)。彈性體由PTMEG合成的聚氨酯，具有抗水"><meta name="keywords" content="鹽城2-甲基四氫呋喃廠(chǎng)家有哪些,2-甲基四氫呋喃"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> 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#f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>鹽城2-甲基四氫呋喃廠(chǎng)家有哪些,2-甲基四氫呋喃</p><p><span>***更新：</span>2020-11-11 06:24:16</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="3s8why8" 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(huà): </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(jī): </span>021-52909928</p><p><span>地址: </span>靜安區(qū)靈石路709號(hào)55幢A2113室</p><p>[當(dāng)前離線(xiàn)] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="ob8frse" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="twc88yt" class="box"><p><p style="text-indent:25px">聚四亞甲基醚二醇，又稱(chēng)聚(四氫呋喃)，簡(jiǎn)稱(chēng)PTMEG，是一種重要的高分子材料，用途十分普遍。氨綸工業(yè)PTMEG的主要領(lǐng)域是氨綸工業(yè)。氨綸是一種性能優(yōu)良的彈性纖維，主要用于生產(chǎn)內(nèi)衣、泳衣、運(yùn)動(dòng)裝和襪類(lèi)。彈性體由PTMEG合成的聚氨酯，具有抗水解、耐老化、彈性好、耐磨等優(yōu)點(diǎn)，是特種橡膠的原料，可以用來(lái)制作航空軟管、升降機(jī)輪胎、工業(yè)膠帶、運(yùn)動(dòng)鞋、醫(yī)用假體等。其他領(lǐng)域PTMEG具有強(qiáng)度高、彈性好，鹽城2-甲基四氫呋喃廠(chǎng)家有哪些、耐霉變等優(yōu)點(diǎn)，也可以用于合成革制品，鹽城2-甲基四氫呋喃廠(chǎng)家有哪些、輪胎、傳送帶，鹽城2-甲基四氫呋喃廠(chǎng)家有哪些、建筑涂料和地板，以及防護(hù)材料等領(lǐng)域的生產(chǎn)。四氫呋喃用作色譜分析試劑、有機(jī)溶劑及尼龍66中間體。鹽城2-甲基四氫呋喃廠(chǎng)家有哪些</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="鹽城2-甲基四氫呋喃廠(chǎng)家有哪些,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389623884264046/3770351.png"></div><p style="text-indent:25px">順酐催化加氫法：順酐和氫氣從底部進(jìn)入內(nèi)裝鎳催化劑的反應(yīng)器，產(chǎn)物中四氫呋喃與γ-丁內(nèi)酯比例可通過(guò)調(diào)整操作參數(shù)加以控制。反應(yīng)產(chǎn)物與原料氫氣冷卻至50℃左右進(jìn)入洗滌塔底部，使未反應(yīng)的氫氣及氣態(tài)與液態(tài)產(chǎn)物分離，未反應(yīng)的氫氣及氣態(tài)產(chǎn)物經(jīng)洗滌后循環(huán)到反應(yīng)器，液態(tài)產(chǎn)物經(jīng)蒸餾而得四氫呋喃產(chǎn)品。該工藝可在0～(5∶1)范圍內(nèi)任意調(diào)整γ-丁內(nèi)酯與四氫呋喃的比例，順酐的單程轉(zhuǎn)化率達(dá)99.9%，四氫呋喃選擇性為85%～95%，產(chǎn)品含量達(dá)99.97%。該工藝具有催化劑性能好、流程簡(jiǎn)單、投資少等特點(diǎn)。4-丁二醇脫水環(huán)化法：其工藝過(guò)程為：向反應(yīng)器中加入1087kg 22%的硫酸水溶液，在100℃以110kg/h的速度加入1，4-丁二醇，塔頂溫度維持在80℃，以大約110kg/h的速度從塔頂?shù)玫胶?0%四氫呋喃的水溶液。加入50t 1，4-丁二醇后，從反應(yīng)器中排除約70kg焦質(zhì)。將焦質(zhì)進(jìn)行過(guò)濾，得到的硫酸水溶液可以重新使用，這一過(guò)程的四氫呋喃收率可以達(dá)到99%以上。硫酸是四氫呋喃工業(yè)生產(chǎn)中使用較早的催化劑，也是現(xiàn)今生產(chǎn)中應(yīng)用較多的催化劑。此工藝技術(shù)成熟，工藝比較簡(jiǎn)單，反應(yīng)溫度較低，四氫呋喃收率較高，但硫酸易腐蝕設(shè)備，污染環(huán)境。杭州2-甲基四氫呋喃公司2-甲基四氫呋喃是用于合成藥物磷酸氯喹和磷酸伯氨喹的主要原料。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="鹽城2-甲基四氫呋喃廠(chǎng)家有哪些,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389624027184007/8887733.png"></div><p style="text-indent:25px">5-二取代的四氫呋喃類(lèi)混合物的制備方法，包括：在多相醚化催化劑、多相氫化催化劑和氫氣存在的條件下，將5-羥甲基糠醛或5-羥甲基糠醛的水溶液與醇混合后發(fā)生醚化還原反應(yīng)得到的液態(tài)中間產(chǎn)物；然后再在第二催化劑的作用下，使得到的液態(tài)中間產(chǎn)物發(fā)生加氫反應(yīng)，得到2，5-二取代的四氫呋喃類(lèi)混合物。該制備方法通過(guò)兩步法實(shí)現(xiàn)5-羥甲基糠醛向目標(biāo)產(chǎn)物的轉(zhuǎn)化，得到的2，5-二取代的四氫呋喃類(lèi)混合物可作為潛在的燃料或者燃料添加劑。含有四氫呋喃的藥物共有13個(gè)。這些藥物涵蓋心血管疾病，傳染病，泌尿系統(tǒng)疾病，ai癥和糖尿病等多種***領(lǐng)域。這些藥物中的四氫呋喃都含有手性中心，其中特拉唑嗪和阿夫唑嗪為外消旋體。另外，有4種藥物含有兩個(gè)四氫呋喃環(huán)，包括地瑞那韋、異山梨醇二硝酸酯、異山梨醇單硝酸酯。天然產(chǎn)物包括伊維菌素、依前列醇及軟海綿素B的合成類(lèi)似物艾日布林。泊沙康唑含有一個(gè)季碳手性中心，其抗***效果優(yōu)于早期的酮康唑等抗***藥，它對(duì)曲霉菌以及對(duì)先前的抗***藥具有抗性的其它******均有效。</p><p style="text-indent:25px">低濃度四氫呋喃廢氣的處理，提出了一種經(jīng)濟(jì)有效的電化學(xué)氧化強(qiáng)化溶液吸收去除THF的方法。實(shí)驗(yàn)采用圓筒式溶液吸收電化學(xué)反應(yīng)器降解THF，圓筒中心沿軸向設(shè)置有RuO2涂層的鈦棒陽(yáng)極，筒內(nèi)壁附有一層不銹鋼網(wǎng)作為陰極，兩極的距離約為9 mm。實(shí)驗(yàn)結(jié)果表明，THF的去除率與電解吸收液的性質(zhì)有關(guān)，在NaCl溶液中的去除率高于Na2SO4溶液，這是因?yàn)槲雎入姌O電解NaCl溶液時(shí)能產(chǎn)生有效氯間接氧化THF。實(shí)驗(yàn)發(fā)現(xiàn)THF的去除率也與吸收液的pH有關(guān)，在酸性NaCl溶液中的去除率明顯高于堿性條件下，當(dāng)pH約為1時(shí)，去除率較高能達(dá)到94.8%。此外，還發(fā)現(xiàn)采用254 nm的紫外光照射能增加THF的去除率。經(jīng)檢測(cè)THF的主要液相降解產(chǎn)物為γ-丁內(nèi)酯。四氫呋喃是一種無(wú)色、可與水混溶。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="鹽城2-甲基四氫呋喃廠(chǎng)家有哪些,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389623961490638/1355180.png"></div><p style="text-indent:25px">二氯丁烯法以1，4-二氯丁烯為原料，經(jīng)水解生成丁烯二醇，再經(jīng)催化加氫而得。1，4-二氯丁烯在氫氧化鈉溶液中水解，110℃下生成丁烯二醇，離心分離去掉氯化鈉，濾液在蒸發(fā)結(jié)晶器中濃縮，分離出堿金屬羧酸鹽，再在蒸餾塔中除去高沸物。將精制后的丁烯二醇送入反應(yīng)器，以鎳為催化劑，在80～120℃及一定壓力下，丁烯二醇加氫生成丁二醇，蒸餾后進(jìn)人環(huán)合反應(yīng)器，在常壓及120～140℃下于酸性介質(zhì)中生成粗四氫呋喃，蒸餾脫水和脫高沸物，之后蒸餾得高純四氫呋喃。此法操作簡(jiǎn)便，條件溫和，收率高，催化劑用量少，可連續(xù)使用。四氫呋喃是一種常用的中等極性非質(zhì)子性溶劑。杭州2-甲基四氫呋喃公司</p><p style="text-indent:25px">2-甲基四氫呋喃可替代四氫呋喃做格氏反應(yīng)溶劑。鹽城2-甲基四氫呋喃廠(chǎng)家有哪些</p><p style="text-indent:25px">2-甲基呋喃可用于溶液聚合中作溶劑使用，也可用于合成戊二烯、戊二醇、乙酰丙醇及酮類(lèi)和2-甲基四氫呋喃。在醫(yī)藥工業(yè)中，可用于合成維生素B1、磷酸氯喹和磷酸伯氨喹等。包裝類(lèi)型：180公斤鍍鋅桶，或ISO Tank,20噸/罐，也可根據(jù)客戶(hù)要求包裝。儲(chǔ)存方式：儲(chǔ)存于陰涼、干燥、通風(fēng)良好的庫(kù)房。遠(yuǎn)離火種、熱源。防止陽(yáng)光直射。包裝密封。與氧化劑、酸類(lèi)分開(kāi)存放。產(chǎn)品運(yùn)輸：運(yùn)輸過(guò)程中應(yīng)有遮蓋物，確保包裝不泄露、不倒塌、不墜落、不損壞，防止猛烈撞擊，不得與還原性物質(zhì)混運(yùn)。鹽城2-甲基四氫呋喃廠(chǎng)家有哪些</p><p style="text-indent:25px">上海蔚云化工有限公司致力于化工，以科技創(chuàng)新實(shí)現(xiàn)***管理的追求。上海蔚云化工深耕行業(yè)多年，始終以客戶(hù)的需求為向?qū)?，為客?hù)提供***的環(huán)戊酮，甲基異丙基酮，丙二胺，二甘醇胺。上海蔚云化工不斷開(kāi)拓創(chuàng)新，追求出色，以技術(shù)為先導(dǎo)，以產(chǎn)品為平臺(tái)，以應(yīng)用為重點(diǎn)，以服務(wù)為保證，不斷為客戶(hù)創(chuàng)造更高價(jià)值，提供更優(yōu)服務(wù)。上海蔚云化工始終關(guān)注化工行業(yè)。滿(mǎn)足市場(chǎng)需求，提高產(chǎn)品價(jià)值，是我們前行的力量。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/1942376.html</p></div></div></div></div></div><div id="ljfbiug" class="page-right twoColRt"><div id="kjp3p7m" 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