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class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>四川省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>成都巴斯夫異氰酸酯哪家好,異氰酸酯</p><p><span>***更新：</span>2021-02-06 08:06:31</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="x5hvtht" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">成都成英科技有限公司</a></p><p><span>聯(lián)系人：</span>何英</p><p><span>郵箱: </span>cykj789@sina.com</p><p><span>電話: </span>13558781838</p><p><span>傳真: </span>135_</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>135-58781838</p><p><span>地址: </span>龍橋鎮(zhèn)山水村3組201號(hào)</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="33ljz5n" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="hpvb375" class="box"><p><p> 羰基化法制備異氰酸酯傳統(tǒng)商業(yè)化生產(chǎn)異氰酸酯的方法都是采用光氣法，但該種生產(chǎn)方法，使用劇毒性光氣，成都巴斯夫異氰酸酯哪家好，且生產(chǎn)過程中產(chǎn)生大量HCl，這對(duì)生產(chǎn)的安全操作，尾氣處理、設(shè)備防腐、環(huán)保安全等要求十分嚴(yán)格，生產(chǎn)、維護(hù)成本高昂，生產(chǎn)裝置復(fù)雜，工序多、流程長;同時(shí)，zui終產(chǎn)品中還含有難以分離的可水解氯化物。面對(duì)這些問題，成都巴斯夫異氰酸酯哪家好，成都巴斯夫異氰酸酯哪家好，人們一直在探索更安全、更簡便、更經(jīng)濟(jì)的異氰酸酯合成方法，其中羰基合成法具有不使用光氣、產(chǎn)品純度高等優(yōu)點(diǎn)，已成為非光氣法制備異氰酸酯的研究熱點(diǎn)之一。吸入后刺激呼吸系統(tǒng), 引起干咳、喉痛。成都巴斯夫異氰酸酯哪家好</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="成都巴斯夫異氰酸酯哪家好,異氰酸酯" src="https://tyunfile.71360.com/UploadFile/cdcykj/637281754176621093/2041773.png"></div><p> 3-氯-4-甲基苯基異氰酸酯主要用于制備綠麥隆等；對(duì)-三氟甲基苯基異氰酸酯主要用于制備對(duì)氟?。?-三氟甲基苯基異氰酸酯主要用于制備伏草?。?-氯-4-甲氧基苯基異氰酸酯主要用于制備甲氧隆等；對(duì)異丙基苯基異氰酸酯主要用于制備異丙隆等；對(duì)溴苯基異氰酸酯主要用于制備秀谷隆等；對(duì)硝基苯基異氰酸酯主要用于制備滅鼠胺、滅鼠優(yōu)等；4-(對(duì)氯苯氧基)一苯基異氰酸主要用于制備枯草隆；4一(對(duì)甲氧基苯氧基)一苯基異氰酸酯主要用于制備枯芳??；巴斯夫異氰酸酯哪家好胺、水、醇、酸、堿發(fā)生反應(yīng)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="成都巴斯夫異氰酸酯哪家好,異氰酸酯" src="https://tyunfile.71360.com/UploadFile/cdcykj/637281755363974609/1893677.png"></div><p> 使氨基甲酰氯、伯胺的鹽酸鹽和脲分解生成異氰酸酯：RNHCOCl→RNCO+HClRNH2·HCl+RNCO→RNHCONHR+HClRNHCONHR+COCl2→2RNCO+2HCl+焦油由于原料易得,操作方便,產(chǎn)率高,這一方法被用于大規(guī)模工業(yè)生產(chǎn)。(2)氣相光氣法氣相光氣法與液相光氣法原理類似,只是胺類化合物在200～600℃的高溫下氣化,從而與氣相光氣發(fā)生均相反應(yīng)而一步制得異氰酸酯的方法。相比較液相光氣法而言,該方法具有反應(yīng)收率高、能耗低等優(yōu)點(diǎn),目前已經(jīng)成為光氣法合成異氰酸酯技術(shù)中的主流發(fā)展方向。 </p><p style="text-indent:25px">對(duì)硝基苯基異氰酸酯主要用于制備滅鼠胺、滅鼠優(yōu)等；4-( 對(duì)氯苯氧基 )一苯基異氰酸主要用于制備枯草?。?一(對(duì)甲基苯乙氧基)一苯基異氰酸Chemicalbook醋主要用于制備苯谷隆。，主要有間(或?qū)?-四甲基二甲苯二異氰酸酯[m-(或p-)TMXDI]、間-異丙烯一a,a一二甲基芐基異氰酸酯(m-TMI)。4.多異氰酸酯主要有異佛爾酮二異氰酸酯（IPDI），常用作淺色聚氨酯原料；六亞甲基二異氰酸酯(HDI），主要用于制備二脲化合物；三苯基甲烷三異氰酸酯、4,4,’4’’一三異氰酸苯基磷酸酯、4,4’,4’’一三異氰酸苯基硫代磷酸酯，主要用作膠黏劑。與水反應(yīng)生成胺和二氧化碳，胺進(jìn)一步與異氰酸酯反應(yīng)生成取代脲。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="成都巴斯夫異氰酸酯哪家好,異氰酸酯" src="https://tyunfile.71360.com/UploadFile/cdcykj/637281755466474609/4684362.png"></div><p> 由于光氣劇毒性質(zhì)，對(duì)非光氣合成異氰酸酯方法的摸索一直都沒有停止過，除上節(jié)描述的羰基法外，尚有許多方法，在此做簡單介紹。EniChem公司曾介紹了使用碳酸二甲酯代替光氣制備TDI的方法:該法使用2，4-，2，6-二氨基甲苯為基礎(chǔ)原料，使用碳酸二甲酯(DMC)代替劇毒光氣作為親核反應(yīng)中心，當(dāng)DMC的羰基受到親核攻擊時(shí)，?；?氧鍵斷裂生成羰基化合物一一甲苯二氨基甲酸甲酯(TDU)，該中間體經(jīng)提純處理后熱解生成TDI和甲醇:甲苯二胺與過量的碳酸二甲酯以13:1的比例混合，以醋酸鋅為催化劑，在160~175℃和，獲得TDU中間體，粗TDU在130℃下被溶解在，處理2h后脫除催化劑，然后蒸餾脫除碳酸二甲酯。中間體TDU在低壓和超過450℃的高溫下進(jìn)行熱解，可獲得TDI產(chǎn)品。高溫 (350~540℃)下裂解可形成**氫。雅安異氰酸酯pm200</p><p style="text-indent:25px">異氰酸酯主要用于聚氨酯硬泡沫塑料。成都巴斯夫異氰酸酯哪家好</p><p style="text-indent:25px">性質(zhì):異氰酸的各種酯的總稱。有一異氰酸酯R-N=C=O和二異氰酸酯O=C=N-R-N=C=O。一般是不愉快氣味的液體。一異氰酸酯易與氨或胺作用而成脲類，易與醇作用而成氨基甲酸酯(如氨基甲酸乙酯)。用途:用于家電、汽車、建筑、鞋業(yè)、家具、膠粘劑等行業(yè);生產(chǎn)方法:一種異氰酸酯，其通過如下步驟生產(chǎn):a)使氯氣與一氧化碳反應(yīng)生產(chǎn)光氣，b)使光氣與有機(jī)胺反應(yīng)形成異氰酸酯和氯化氫，c)將異氰酸酯和氯化氫分離出來，d)任選地，純化氯化氫，e)制備氯化氫水溶液，f)任選地，純化氯化氫水溶液，g)使氯化氫水溶液進(jìn)行電化學(xué)氧化形成氯氣，和h)使至少部分步驟(g)中產(chǎn)生的氯氣返回(a)。成都巴斯夫異氰酸酯哪家好</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3190998.html</p></div></div></div></div></div><div id="3jx7v5j" class="page-right twoColRt"><div id="13z5pd3" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="3ptzfbf" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="d3rf3lr" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img src="https://tyunfile.71360.com/WaterMark/UploadFile/nbzxsw/637298235378037109/764794.png" alt="寧波寧海直接考A2有幾個(gè)科目真誠推薦寧波助學(xué)商務(wù)信息咨詢供應(yīng)" class="vcenter" 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