CAS: 104-49-4; 1,4-Phenylene Diisocyanate

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CAS号5433-04-5 Carbamicacid, N... | CAS号5466-93-3 N-[4-(乙氧羰基氨基)苯基... | CAS号106-50-3 对苯二胺 | CAS号503-38-8 氯甲酸三氯甲酯 | CAS号623-26-7 对苯二甲腈 | CAS号75-44-5 光气 | CAS号124-38-9 二氧化碳 | CAS号54714-11-3 4,6-二苯基噻吩[3,4-D... | CAS号13907-99-8 1-(2-fluoroethy... | CAS号86358-39-6 methyl N-(4-iso... | CAS号5466-93-3 N-[4-(乙氧羰基氨基)苯基... | CAS号5433-04-5 Carbamicacid, N...

N-[4-(乙氧羰基氨基)苯基]氨基甲酸乙酯置于三氯化硼,三乙胺体系中,用 苯 用作溶剂,化学反应 0.5H,以100%的收率获得对苯二异氰酸酯
参考文献:Synthesis Of Isocyanates From Carbamate Esters Employing Boron Trichloride
标题:Synthesis Of Isocyanates From Carbamate Esters Employing Boron Trichloride
摘要:在有 Et3N 存在的情况下,使用 Bcl3 可以将氨基甲酸酯转化为具有工业重要性的异氰酸酯和二异氰酸酯;该反应的实施和操作简单,在温和的条件下进行,并能以极高的收率获得异氰酸酯.
Doi:10.1039/a807287F

专利信息

专利号:WO-2009018504-A1
优先权日:2007-08-01
标题 :Process for the synthesis of diaminopyridine and related compounds
发明人：RITTER JOACHIM C
权利人:DU PONT; RITTER JOACHIM C
摘要:A process is provided for the synthesis of a diaminopyridine, such as 2,6-diaminopyridine and related compounds, which are used industrially as compounds and as components in the synthesis of a variety of useful materials. The synthesis proceeds by means of a chlorine-ammonia displacement in the presence of a copper source.

专利号:US-6924385-B2
优先权日:2002-11-18
标 题:Method for synthesis of aliphatic isocyanates from aromatic isocyanates
发明人：LETTMANN CHRISTIAN; KOHLSTRUK STEPHAN; STOCHNIOL GUIDO; SPYROU EMMANOUIL
权利人:DEGUSSA
摘要:The invention relates to a method for synthesis of aliphatic isocyanates from aromatic isocyanates in substantially 3 stages. In particular, the invention relates to a method for synthesis of bis{4-isocyanatocyclohexyl}methane (H 12 MDI) from bis{4-isocyanatophenyl}methane (MDI). More especially, the invention relates to a method for synthesis of H 12 MDI with a trans-trans isomer content of <30%, preferably of <20%, particularly preferably of 5 to 15%.

专利号:US-8084569-B2
优先权日:2006-12-21
标 题 :Process for the synthesis of diaminopyridines from glutarimidines
发明人：MINTER AARON; STOKES BERLIN
权利人:MINTER AARON; STOKES BERLIN; DU PONT
摘要:A liquid-phase process is provided for the synthesis from glutarimidines of diaminopyridines and related compounds, which are used industrially as compounds and as components in the synthesis of a variety of useful materials. The synthesis proceeds by means of a dehydrogenative aromatization process.

专利号:US-8022167-B2
优先权日:2006-12-21
标 题 :Process for the synthesis of diaminopyridines from glutaronitriles
发明人：MINTER AARON; STOKES BERLIN
权利人:MINTER AARON; STOKES BERLIN
摘要:A liquid-phase process is provided for the manufacture from glutaronitriles and related compounds of 2,6-diaminopyridine and related compounds, which are used industrially as compounds and as components in the synthesis of a variety of useful materials. The synthesis proceeds by means of a dehydrogenative aromatization process.

专利号:US-7999057-B2
优先权日:2008-07-08
标 题:Gas-phase process for the synthesis of diaminopyridines from glutaronitriles
发明人：HUTCHENSON KEITH W; MINTER AARON; SUNSHINE GREGG
权利人:DU PONT
摘要:A gas-phase, continuous process is provided for the manufacture of 2,6-diaminopyridine and related compounds from glutaronitriles, which are used industrially as compounds and as components in the synthesis of a variety of useful materials. The synthesis proceeds by means of a dehydrogenative aromatization process.

专利号:US-2024368099-A1
优先权日:2022-01-18
标 题:Methods for the synthesis of di(hydroxymethyl)tetrahydrofuran and its application in polyesters and polyurethanes
发明人：SPIEGELBERG BRIAN; BRANDT ADRIAN; BECK HORST; KUX ALEXANDER; TIN SERGEY; DE VRIES JOHANNES GERARDUS
权利人:HENKEL AG & CO KGAA
摘要:The present invention relates to the synthesis of di(hydroxymethyl)tetrahydrofuran (DHMTHF) and the preparation of trans-enriched mixtures of DHMTHF. The invention further refers to polyester polyols which are obtained by reaction of cis/trans DHMTHF mixtures with a dicarboxylic acid. The invention further relates to polyurethanes and compositions containing a polyester polyol comprising DHMTHF, in particular to such polyurethane-containing (adhesive) compositions.