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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="dsprd3q" 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>上海2-甲基四氫呋喃哪家優(yōu)惠,2-甲基四氫呋喃</p><p><span>***更新：</span>2020-11-10 00:32:30</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="ncegnp3" 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(jī): </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="gfxpcos" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="qfh8y4p" class="box"><p><p style="text-indent:25px">二甲基亞砜除此之外,在醫(yī)藥工業(yè)中二甲基亞砜還有直接用作某些藥物的原料及載體.二甲基亞砜本身有***止痛,,等作用,亦譽(yù)為萬靈藥,常作為止痛藥物的活性組分添加于藥物之中. 四氫呋喃為常用有機(jī)溶劑,有都能溶劑之稱，上海2-甲基四氫呋喃哪家優(yōu)惠，上海2-甲基四氫呋喃哪家優(yōu)惠。四氫呋喃已普遍用于表面涂料,保護(hù)性涂料,油墨,萃取劑和人造革的表面處理，上海2-甲基四氫呋喃哪家優(yōu)惠,四氫呋喃是生產(chǎn)聚四亞甲基醚二（PTMEG）重要原料,也是制藥行業(yè)的主要溶劑. 乙酸異丙酯可以與醇、酮、醚等多數(shù)溶劑混溶,有都能溶劑之稱,對多種合成樹脂及天然樹脂有優(yōu)良的溶解能力。四氫呋喃是芳香族化合物呋喃的完全氫化產(chǎn)物。上海2-甲基四氫呋喃哪家優(yōu)惠</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海2-甲基四氫呋喃哪家優(yōu)惠,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389623884264046/3770351.png"></div><p style="text-indent:25px">四氫呋喃性狀：無色液體，有與醚類似的氣味。能與水和有機(jī)溶劑相混溶，易燃。四氫呋喃在強(qiáng)氧化劑高錳酸鉀的作用下會發(fā)生反應(yīng)生成丁二酸；檢測殘留四氫呋喃的方法感覺用儀器分析，如氣、液相色譜；四氫呋喃是一種性質(zhì)比較穩(wěn)定的常用的有機(jī)溶劑，也可用于化工產(chǎn)品生產(chǎn)原料。四氫呋喃的沸點是分子量72.11相對dao密度（du20℃/4℃dao）0.8892凝固點/℃-108.5沸點/℃65.4閃點（閉口）/℃17.2折光率（20℃）1.407介電?；財?shù)（25℃）7.58偶極矩/(10^-30C·答m)5.70,5.67表面張力/(mN/m)26.4黏度(20℃)/mPa·s0.55臨界溫度/℃26.8臨界壓力/MPa5.19蒸氣壓(15℃)/kPa15.2 蒸氣相對密度（空氣=1）2.5燃點/℃321.1蒸發(fā)熱(66℃)/(KJ/Kg)410極限/%(體積)2.3-11.8較小引燃能量/mJ0.5。揚(yáng)州2-甲基四氫呋喃廠家甲基，化學(xué)式為-CH?，由碳和氫元素組成。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海2-甲基四氫呋喃哪家優(yōu)惠,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389623961490638/1355180.png"></div><p style="text-indent:25px">四氫呋喃聚合生產(chǎn)聚四亞甲基醚二醇催化劑制備技術(shù)，多級孔硅鋁復(fù)合氧化物聚合催化劑，實現(xiàn)了PTMEG產(chǎn)品的分子量大小及分子量分布的調(diào)控。與國外粘土催化劑相比，四氫呋喃轉(zhuǎn)化率由30~40%提高到38%~45%之間；獲得了以SiO2改性Al2O3為載體的負(fù)載Pd加氫脫色催化劑，在羰基高選擇性加氫的同時避免了加氫過程中PTMEG分子中C-O-C鍵的斷裂，產(chǎn)品收率提高到99%以上，色度由原來的30 APHA，降低至3個色號以下；基于項目的研究，形成了聚合與加氫脫色催化劑工業(yè)規(guī)模制備技術(shù)，編制了200 t/a催化劑制備與催化反應(yīng)工藝完整的工藝包，建成了催化劑制備與反應(yīng)工藝示范工程，具備了50 t/a催化劑生產(chǎn)能力。</p><p style="text-indent:25px">工藝使用自制的陽離子交換樹脂作為固體酸催化劑，該款樹脂熱穩(wěn)定性高，高溫使用流失少，使用壽命長。反應(yīng)完成后，反應(yīng)液無催化劑殘留，后處理簡單，廢水排放少，環(huán)境友好。該工藝采用了反應(yīng)精餾的方式，反應(yīng)過程中產(chǎn)生的水被及時帶出反應(yīng)體系，促進(jìn)酯化反應(yīng)平衡的右移，提高了原料的轉(zhuǎn)化率。該工藝采用了連續(xù)生產(chǎn)的方式，避免了大量的人工操作，產(chǎn)品質(zhì)量穩(wěn)定，有利于規(guī)模化生產(chǎn)。以自制的固體酸催化合成TFA的工藝路線有較高的工業(yè)應(yīng)用價值，如能應(yīng)用于實踐將會產(chǎn)生良好的經(jīng)濟(jì)效益和社會效益。在制藥工業(yè)中可合成抗痔藥磷酸伯氨奎、磷酸氯喹等。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海2-甲基四氫呋喃哪家優(yōu)惠,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389623894254288/5270430.png"></div><p style="text-indent:25px">聚四氫呋喃二醇是由四氫呋喃（ＴＨＦ）在陽離子引發(fā)下開環(huán)聚合而得到的均聚醚，它含有醚鍵，又有相當(dāng)多的規(guī)整排列的亞甲基，以伯羥基為端基，主要用作聚氨酯彈性體的軟段，是聚氨酯的較好原料。非聚氨酯用途包括共聚酯彈性體、聚醚酰胺工程塑料。ＰＴＭＥＧ型聚氨酯彈性體具有較高模量和強(qiáng)度，優(yōu)異的耐水解、耐磨、耐霉菌、耐油性、動態(tài)力學(xué)性能、電絕緣性能和低溫柔性等性能，它具有通常的聚酯型聚氨酯彈性體所不能達(dá)到的某些特性，特別是良好的耐水性。PTMEG是一種常用的特種聚醚多元醇，用于注射及擠出熱塑性聚氨酯彈性體（TPU）、澆注型聚氨酯彈性體、聚氨酯纖維紡絲、混煉型聚氨酯彈性體等制造工藝，特別適合用于氨綸、汽車配件、電纜、薄膜、織物涂層、合成革、醫(yī)療器材、高性能膠輥、耐油密封件、膠黏劑、金屬部件耐磨內(nèi)襯、體育運(yùn)動制品，以及用于水下、地下、礦井及低溫場合的制品。彈性體多用于耐水解要求高的場合。相反從化合物上脫落的過程叫去甲基化。揚(yáng)州2-甲基四氫呋喃廠家</p><p style="text-indent:25px">甲基呋喃可用于溶液聚合中作溶劑使用。上海2-甲基四氫呋喃哪家優(yōu)惠</p><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(jī)鋰反應(yīng)。在有機(jī)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。上海2-甲基四氫呋喃哪家優(yōu)惠</p><p style="text-indent:25px">上海蔚云化工有限公司是一家化工產(chǎn)品（除危險化學(xué)品、監(jiān)控化學(xué)品、煙花爆竹、民用物品、易制毒化學(xué)品）、化工機(jī)械設(shè)備及配件的銷售，在化工技術(shù)領(lǐng)域內(nèi)從事技術(shù)開發(fā)、技術(shù)轉(zhuǎn)讓、技術(shù)服務(wù)、技術(shù)咨詢。【依法須經(jīng)批準(zhǔn)的項目，經(jīng)相關(guān)部門批準(zhǔn)后方可開展經(jīng)營活動】的公司，是一家集研發(fā)、設(shè)計、生產(chǎn)和銷售為一體的專業(yè)化公司。公司自創(chuàng)立以來，投身于環(huán)戊酮，甲基異丙基酮，丙二胺，二甘醇胺，是化工的主力軍。上海蔚云化工致力于把技術(shù)上的創(chuàng)新展現(xiàn)成對用戶產(chǎn)品上的貼心，為用戶帶來良好體驗。上海蔚云化工始終關(guān)注化工市場，以敏銳的市場洞察力，實現(xiàn)與客戶的成長共贏。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1919568.html</p></div></div></div></div></div><div id="ynpbdv2" class="page-right twoColRt"><div id="zy3djlk" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="7t4nkht" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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