CAS: 43193-60-8; Pyrazine-2,3,5,6-Tetracarboxylic Acid

相似化合物

5521-60-8 89-01-0 2435-46-3

上下游产品

Tetramethylpyrazine 2,3-diaminephenazine 2-amino-3-hydroxy-phenazine Quinoxaline-2,3-dicarboxylic acid1,4-pyrazine diethyl pyrazine-2,5-dicarboxylate tetramethyl pyrazine-2,3,5,6-tetracarboxylate

2,3-二氨基吩嗪置于氢氧化钾,Potassium Permanganate体系中,化学反应生成 2,3,5,6-吡嗪四羧酸
参考文献:Mager; Berends,Recueil Des Travaux Chimiques Des Pays-Bas,1957,Vol. 76,P. 28,32,34
标题:Mager; Berends,Recueil Des Travaux Chimiques Des Pays-Bas,1957,Vol. 76,P. 28,32,34

专利信息

专利号:US-10808079-B2
优先权日:2015-03-27
标 题:Synthesis of copolyimides containing fluorine and silicon surface modifying agents
发明人：CONNELL JOHN W; WOHL JR CHRISTOPHER J; DOSS JEREME R; CROW ALLISON M; KIM WILLIAM T; LIN YI
权利人:NASA
摘要:Various embodiments provide random copolyimides that may possess the mechanical, thermal, chemical and optical properties associated with polyimides yet achieve a low energy surface. In various embodiments, the copolyimides may be prepared using a minor amounts of a diamino terminated fluorinated alkyl ether oligomer and a diamino terminated siloxane oligomer. The various embodiments include processes for making the copolyimides containing fluorine and silicon surface modifying agents and anisotropic coatings and articles of manufacture from them. Thus the coatings and articles of manufacture made with the copolyimides of the various embodiments may be characterized as having an anisotropic fluorine and silicon composition and low surface energy.

专利号:US-5087691-A
优先权日:1989-09-01
标题 :Poly-phenylated diamines and their use as polycondensation monomers in the synthesis of polyamide, poly(amide-imide), and polyimide polymers
发明人：HARRIS FRANK W
权利人:UNIV AKRON
摘要:New polyphenylated polynuclear aromatic diamines, such as 1,3-bis[4-aminophenyl]-2,3,5-triphenylbenzene, a process for their manufacture and their use as polycondensation components for the manufacture of polyamide, polyamide-imide and polyimide polymers are described. The polymers obtained with the aromatic diamines according to the invention are readily soluble, rigid-rod polymers and are distinguished by outstanding modulus, tensile compression strength, energy absorption, coefficient of expansion and electrical properties.

专利号:US-9006371-B1
优先权日:2010-09-28
标题 :Synthesis of oligomeric silsesquioxane monomers for high performance polymers
发明人：WRIGHT MICHAEL E; PETTEYS BRIAN J; GUENTHNER ANDREW J; TOMCZAK SANDRA J
权利人:WRIGHT MICHAEL E; PETTEYS BRIAN J; GUENTHNER ANDREW J; TOMCZAK SANDRA J; US NAVY
摘要:A formulation and methods for making formulation of a series of oligomeric silsesesquioxane (OS) diamine monomers which have been synthesized and purified in a highly time, energy, and atom efficient manner.

专利号:US-9562141-B2
优先权日:2013-05-23
标题 :Method of aerogel synthesis
发明人：RODMAN DAVID L; POE GARRETT D; FARMER BRANDON S; SMITH JOSEPH C
权利人:NEXOLVE CORP; NEXOLVED CORP
摘要:The present disclosure provides a method for producing an aerogel, the method comprising reacting at least one acid monomer with at least one diamino monomer in a first solvent under conditions appropriate to form a polyimide polymer; conducting a solvent exchange wherein the first solvent is exchanged for a second solvent, said second solvent having a freezing point, wherein said solvent exchange further comprises (1) submersing the polyimide polymer in the second solvent in a pressure vessel and (2) creating a high pressure environment inside the pressure vessel for a first period of time; cooling the polyimide polymer to a first temperature below the freezing point of the second solvent; and subjecting cooled polyimide polymer to a first vacuum for a second period of time at a second temperature.

专利号:US-9963578-B2
优先权日:2013-07-17
标题 :Black polyimides and synthesis thereof
发明人：FARMER BRANDON S; POE GARRETT D; RODMAN DAVID L; BRADBURN JR LONNIE F
权利人:NEXOLVE CORP
摘要:Black polyimides polymer and a method of synthesizing the same have been developed. The black polyimide polymer includes at least one acid monomer, at least one diamino monomer and a solvent-soluble black dye. The acid and diamino monomers having been reacting in a solvent under suitable conditions to form a polyimide precursor polymer.

专利号:US-2016280858-A1
优先权日:2015-03-27
标 题:Synthesis of Copolyimides Containing Fluorine and Silicon Surface Modifying Agents