CAS: 13680-35-8; 4,4-Methylenebis(2,6-Diethylaniline)

相似化合物

19900-72-2 838-88-0 106246-33-7

上下游产品

2,6-二乙基苯胺 2,6-Diethylaniline 579-66-8
2-甲基-6-异丙苯胺 2-Isopropyl-6-Methylaniline 5266-85-3

聚合甲醛,2,6-二乙基苯胺置于盐酸体系中,用 水 用作溶剂,化学反应 2.5H,反应生成4,4'-亚甲基双(2,6-二乙基苯胺)
参考文献:一种4,4'-亚甲基-双-(3-氯-2,6-二乙基苯胺)的制备方法
标题:一种4,4'-亚甲基-双-(3-氯-2,6-二乙基苯胺)的制备方法
摘要:本发明公开了一种4,4'-亚甲基-双-(3-氯-2,6-二乙基苯胺)的制备方法,其步骤如下:(1)在氮气保护下,原料2,6-二乙基苯胺与盐酸反应生成2,6-二乙基苯胺盐酸盐,然后滴加甲醛水溶液进行缩合反应,反应结束后用液碱中和,分水得4,4'-亚甲基-双-(2,6-二乙基苯胺;(2)将步骤(1)的产物溶解在溶剂中,通氯气进行氯化反应,反应结束后用液碱中和,分水得4,4'-亚甲基-双-(3-氯-2,6-二乙基苯胺)粗品;(3)将步骤(2)的产物溶解在溶剂中,经活性炭脱色,冷却结晶,过滤,烘干,得到最终产品.本发明的工艺简单,原料易得且价格低,产品的纯度和得率高,又易于工业化生产.

专利信息

专利号:US-2018312623-A1
优先权日:2017-04-28
标题 :Polyurethane Elastomer with High Ultimate Elongation
发明人：WANG LIANG; WANG VIKTORIA
权利人:WANG LIANG; WANG VIKTORIA
摘要:The present invention relates to polyurethane-urea elastomers with exceptional mechanical properties and enhanced elasticity based on molecular structure analysis. The present invention involves the synthesis of a polyurethane-urea elastomer using a combination of commercially available materials: (1) polyols with ultralow unsaturation and narrow polydispersity, (2) diisocyanates with symmetric steric conformation, and (3) bulky diamines between functional groups. The preparation method for the novel polyurethane-urea is disclosed. The subject elastomers have the highest reported elongation-at-break among known polyurethane elastomers.

专利号:US-4116982-A
优先权日:1976-07-27
标 题 :3-oximino-4-oxo-2,5-dimethyl-tetrahydrofuran
发明人：BAUMANN MANFRED; HOFFMANN WERNER; VON FRAUNBERG KARL
权利人:BASF AG
摘要:The new product 3-oximino-4-oxo-2,5-dimethyl-tetrahydrofuran is manufactured by oximation of the new product 3-carboxy-4-oxo-2,5-dimethyl-tetrahydrofuran with aqueous nitrous acid, nitrite esters or nitrosyl chloride. Because of its fine caramel-like fragrance it may be used for the manufacture of scents and flavor materials. In addition it presents an advantageous method of synthesis of the sought-after flavor material 4-oxo-3-hydroxy-2,5-dimethyl-4,5-dihydrofuran (furaneol).

专利号:WO-2024050749-A1
优先权日:2022-09-08
标题:Self-catalytic directional degradation method for polyurethane material, polyol prepared thereby, and polyurethane material
发明人：CHEN YAO-HUANG; CHEN CHUN-AN; LIN TONG-YAN; HSU CHIH-KAI
权利人:SWANCOR INNOVATION & INCUBATION CO LTD
摘要:Provided in the present invention are a self-catalytic directional degradation method for a polyurethane material, a polyol prepared thereby and a polyurethane material. The self-catalytic directional degradation method for a polyurethane material comprises: carrying out a crushing step, a mixing step, a degradation step and a high-temperature decompression step. The crushing step comprises forming polyurethane particles. The mixing step comprises mixing the polyurethane particles with an alcohol amine compound to form a degradation system, wherein the alcohol amine compound has a structure as shown in formula (I) or formula (II), the symbols in formula (I) and formula (II) being as defined in the specification. The degradation step comprises degrading a degradation system so as to obtain an intermediate product. The high-temperature decompression step comprises removing the alcohol amine compound from the intermediate product, so as to obtain a polyol. Therefore, the alcohol amine compound is used for heating and degrading the polyurethane material, and the obtained product polyol can be applied to the synthesis of the polyurethane material, thereby achieving the recovery cycle purpose.

专利号:US-5879894-A
优先权日:1993-03-19
标 题:Long emission wavelength chemiluminescent compounds and their use in test assays
发明人：LAW SAY-JONG; JIANG QINGPING; FISCHER WALTER; UNGER JOHN T; KRODEL ELIZABETH K; XI JUN
权利人:CHIRON DIAGNOSTICS CORP
摘要:An assay method incorporating at least two different chemiluminescent compounds for detection and/or quantitation of at least two substances in a test sample is described. The synthesis of chemiluminescent reagents or conjugates for use in such methods as well as kits incorporating such reagents are also disclosed. The assays have particular application in the field of clinical diagnostics.

专利号:JP-2001064233-A
优先权日:1999-08-26
标 题:SYNTHESIS OF OPTICALLY ACTIVE beta-ARYL ESTER COMPOUND

专利号:US-9365573-B2
优先权日:2012-04-10
标题:Method for synthesizing sapropterin dihydrochloride
发明人：HONG HAO; GAGE JAMES; CHEN CHAOYONG; LU JIANGPING; ZHOU YAN; LIU SHUANGYONG
权利人:ASYMCHEM LAB TIANJIN CO LTD; ASYMCHEM LIFE SCIENCE TIANJIN CO LTD; TIANJIN ASYMCHEM PHARMACEUTICAL CO LTD; ASYMCHEM LAB FUXIN CO LTD; JILIN ASYMCHEM LAB CO LTD; TIANJIN ASYMCHEM PHARMACEUTICAL CO LTD
摘要:Disclosed is a method for synthesizing sapropterin dihydrochloride. The present disclosure reduces a synthesis route of the sapropterin dihydrochloride, introduces a chiral center in an asymmetric synthesis manner, in which a tetrahydrofuran solution containing a samarium catalyst is adopted as a catalyst, and obtains a target compound having a high antimer isomerism value by means of selective catalysis. The yield is improved, raw materials are cheap and readily available, and the cost is significantly reduced, hence providing an effective scheme for mass industrial production of the sapropterin dihydrochloride.