CAS: 13464-80-7; Hydrazine,Sulfuric Acid

专利信息

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-6183717-B1
优先权日:1999-02-03
标 题:Transition metal oxide-containing materials and the synthesis thereof
发明人：KHAN M ISHAQUE
权利人:ILLINOIS TECHNOLOGY INST
摘要:Mixed-metal oxide-based solids composed of a linked array of a plurality of vanadium oxide building blocks wherein a vanadium and oxygen shell cluster encapsulate a central X unit, where X is at least one species selected from the group consisting of VO4, SO4, Cl, Br, I, H2O, HCOO and NO2 and associated methods of synthesis are provided.

专利号:US-7288239-B2
优先权日:2002-11-21
标题:Method for producing alkaline earth sulphate nanoparticles
发明人：IBARRA FERNANDO; MEYER CHRISTIANE; HAUBOLD STEPHAN; HEIDELBERG THORSTEN
权利人:NANOSOLUTIONS GMBH
摘要:The invention relates to synthesis of nanoparticles, in particular to methods for producing nanoparticles with networks consisting of Z sulphate (Z=magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba) or the binary mixtures thereof). The inventive method consists in synthesising the nanoparticles by crystal growth from an ion Z source and a sulphate ion source in a liquid phase mixture. The invention produces Z sulphate nanoparticles having a small diameter and uniformly dispersible in water or other solvents in a simple way. Co-ordinating solvents like glycerine, glycol ethylene and other polyethylene glycols, polyalcohols or dimethylsulphoxide (DMSO) are used for the synthesis mixture.

专利号:WO-2005023883-A1
优先权日:2003-08-29
标 题 :Method for the synthesis of copolymers for producing polymethacrylimides

专利号:CN-107438594-A
优先权日:2015-04-02
标 题:An efficient process for the synthesis of cyclic amides

专利号:EP-1658318-A1
优先权日:2003-08-29
标 题 :Method for the synthesis of copolymers for producing polymethacrylimides