CAS: 32961-44-7; Isobutyl 3,5-Diamino-4-Chlorobenzoate

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isobutyl 3,5-dinitro-4-chlorobenzoate3,5-diamino-4-chlorobenzoic acid 3,5-diamino-4-chloro-2-(2-hydroxyphenyl)diazenylbenzoic acid 3,5-diamino-4-chloro-2-(2-hydroxy-5-nitrophenylazo)benzoic acid 3,5-diamino-4-chloro-2-(2-hydroxy-4-nitrophenylazo)benzoic acid

3,5-二硝基-4-氯苯甲酸异丁酯置于吗啉,氢气体系中,用 乙醇 作为反应溶剂,90.0~100.0 °C,3.0 Mpa 条件下,反应 1.5H,以92%的收率获得产物4-氯-3,5-二氨基苯甲酸异丁酯
参考文献:一种3,5-二氨基-4-氯苯甲酸异丁脂的制备方法
标题:一种3,5-二氨基-4-氯苯甲酸异丁脂的制备方法
摘要:一种3,5‑二氨基‑4‑氯苯甲酸异丁脂的制备方法,包括有以下基本步骤:步骤1,将原料酯化物,溶剂,催化剂兰尼镍和脱卤抑制剂一次性投入高压反应釜中密封,使用0.2‑0.3Mpa氮气,氢气对高压釜各置换3次,步骤2,步骤1密封完全后添加氢气压力至3.0Mpa,提升高压反应釜温度反应,及时补充氢气的压力,确保反应过程中高压釜内的压力维持在3.0Mpa,步骤3,步骤2中加氢气是压力维持在3.0Mpa,反应约1.5‑2小时,体系不再吸氢后结束反应,整体冷却,步骤4,步骤3结束后对催化剂兰尼镍循环回收使用,步骤5,滤液减压浓缩至粘稠状,放入冰箱低温冷却结晶,步骤6,溶剂醇,脱卤抑制剂脱溶回收循环套用,本发明成本低,安全,可行.

专利信息

专利号:US-10351652-B2
优先权日:2015-06-15
标 题:Method for the synthesis of polymer carbodiimides with added cesium salts, polymer carbodiimides, and use thereof
发明人：LAUFER WILHELM; HERD OLIVER; SPERBER ROLF
权利人:LANXESS DEUTSCHLAND GMBH
摘要:The present invention relates to processes for producing polymeric carbodiimides by addition of cesium salts and to polymeric carbodiimides produced by this process and to the use thereof as a hydrolysis inhibitor, especially in polyurethane (PU)-based systems, preferably thermoplastic TPU, PU adhesives, PU casting resins, PU elastomers or PU foams.

专利号:US-2010093880-A1
优先权日:2006-12-20
标 题:Recycling cleavage of polyurethanes
发明人：BERGFELD MANFRED; KIEFFER ANDREAS
权利人:BERGFELD MANFRED; KIEFFER ANDREAS
摘要:A process is described for splitting polyurethanes and polyurethaneureas, in which the polymer is first reacted with gaseous or liquid secondary aliphatic or cycloaliphatic amines, the secondary urea formed, after removal with hydrogen chloride, is split to the isocyanate, and the polyols or polyamines also formed in the reaction are worked up and purified. It is possible by the process according to the invention to work up polyurethanes, polyurethaneureas, etc., of any origin, and to break them down into the starting materials, specifically the isocyanates, polyols or polyamines, to form starting materials in very high quality, which can be reused for the synthesis of any polyurethanes or polyureas. The invention further provides for the preparation of secondary bis-ureas from polyurethanes or polyurethaneureas or/and ureas.

专利号:WO-2016202781-A1
优先权日:2015-06-15
标 题 :Method for the synthesis of polymer carbodiimides with added cesium salts, polymer carbodiimides, and use thereof

专利号:CA-2989239-A1
优先权日:2015-06-15
标题 :Method for the synthesis of polymer carbodiimides with added cesium salts, polymer carbodiimides, use thereof

专利号:EP-3307709-A1
优先权日:2015-06-15
标 题 :Method for the synthesis of polymer carbodiimides with added cesium salts, polymer carbodiimides, and use thereof

专利号:US-2018171058-A1
优先权日:2015-06-15
标题 :Method for the Synthesis of Polymer Carbodiimides with Added Cesium Salts, Polymer Carbodiimides, and Use Thereof