CAS: 20845-01-6; Hydroxylamine Phosphate

上下游产品

hydroxylamine hydr°Chloride ammonia hydroxylamine nitric acid

专利信息

专利号:US-2023002312-A1
优先权日:2019-11-20
标题:A continuous flow process for the synthesis of hydroxamic acid
发明人：PIMPALE MILIND JAGANNATH; KINI PRASHANT VASANT
权利人:UPL LTD
摘要:The present invention relates to a process for the synthesis of hydroxamic acids by continuous flow process wherein said process comprising reacting alkyl ester with hydroxyl amine salt in presence of base in a microreactor system and continuously producing hydroxamic acid.

专利号:US-6333411-B1
优先权日:1998-12-24
标 题 :Method for production of hydroxylammonium phosphate in the synthesis of caprolactam
发明人：ECHEGARAY DIEGO FERNANDEZ; VELLOSO ANTONIO AUGUSTO M; WAGNER MATTHEW LINCOLN
权利人:PRAXAIR TECHNOLOGY INC
摘要:A method for production of caprolactam. The method involves:(a) reacting air with ammonia gas in an ammonia conversion zone to produce nitric oxide;(b) oxidizing at least a portion of the nitric oxide to nitrogen dioxide to produce an NOx-rich process gas stream;(c) reactively absorbing the NOx-rich gas stream with phosphoric acid containing solution in an absorption zone to form nitrate ions;(d) contacting the nitrate ions with air in a degassing zone to produce a nitrate-rich aqueous process stream;(e) reducing the nitrate-rich aqueous stream with hydrogen in the presence of phosphoric acid to produce hydroxylammonium phosphate;(f) oximating the hydroxylammonium phosphate with cyclohexanone to produce cyclohexanone oxime; and(g) converting the cyclohexanone oxime to caprolactam.According to the invention, supplemental oxygen is added downstream of the ammonia conversion zone to increase the quantity and rate of formation of nitrogen dioxide in the NOx-rich process gas stream.

专利号:US-2007142588-A1
优先权日:2003-08-29
标 题:Method for the synthesis of copolymers for producing polymethacrylimides
发明人：SCHERBLE JONAS; STEIN PETER; ALUPEI JULIAN C; RITTER HELMUT; SCHWARZ-BARAC SABINE
权利人:ROEHM GMBH
摘要:The invention relates to a method for producing polymethacrylimides in two steps: 1) radical copolymerization of (meth)acrylamides (A, (Me,H)HC=CHCONHR2) and alkyl(meth)acrylic esters (B) and optionally further ethylenically unsaturated monomers in the presence of an aqueous solvent. The monomers (A) include, in addition to acrylamide and methacrylamide, (meth)acrylamides that are substituted on their nitrogen group (R2<>H). The monomers (B) are the (meth)acrylic esters of secondary or tertiary alcohols, preferably tert. butylmethacrylate. 2) Thermal or catalytic reaction of the copolymers produced in 1) to polymethacrylimide or for R2<>H to N-substituted polymethacrylimides while alkenes are separated.

专利号:US-4328198-A
优先权日:1979-10-05
标题 :Cyclic process for the preparation and processing of a hydroxylammonium salt solution
发明人：VAN DE MOESDIJK CORNELIS G M
权利人:STAMICARBON
摘要:The process relates to hydroxylammonium salts. n Cyclic process for the preparation and processing of a hydroxylammonium salt solution, in which an aqueous acid reaction medium is kept in circulation between a hydroxylammonium salt synthesis zone and an oxime synthesis zone, and in which the circulating liquid is continuously supplied with nitrogen monoxide, which serves as nitrogen source for the formation of the hydroxylammonium salt, and which is converted into hydroxylamine by catalytic reduction with hydrogen. n The circulating liquid is, before it enters the hydroxylammonium salt synthesis zone, subjected to a stripping process by bringing the circulating liquid via a heat-exchanging surface in heat-exchange with nitrogen monoxide containing water vapor, upon which the water vapor condenses, and the remaining gas containing nitrogen monoxide as nitrogen source is used in the reduction of nitrogen monoxide to hydroxylamine.

专利号:JP-2003524567-A
优先权日:1997-08-15
标题:Electrical synthesis of hydroxylammonium salt and hydroxylamine using mediator, catalyst film, method for preparing catalyst film, and electrical synthesis of compound using catalyst film

专利号:KR-20220101115-A
优先权日:2019-11-20
标 题:Continuous Flow Process for Synthesis of Hydroxamic Acid