专利号:US-5859237-A 优先权日:1995-04-28 标 题:Process for the production of phthalocyanine pigment 发明人:NOGUCHI HIDETO; HAYASHI MIKIO; MOMOSE MASATOSHI 权利人:TOYO INK MFG CO 摘要:A process for the production of a phthalocyanine pigment having a clear color tone, a high tinting strength and a finely milled structure by an efficient and economical process, in which the pigmentation from a phthalocyanine crude can be carried out without removing an aromatic hydrocarbon solvent used in the synthesis of the phthalocyanine crude, the process comprising thes steps of n (a) reacting phthalic anhydride or its derivative, urea or its derivative and a catalyst in an organic solvent to synthesize a phthalocyanine crude, n (b) wet-milling a slurry of the synthesized phthalocyanine crude in the presence of a milling medium without removing the aromatic hydrocarbon solvent, and n (c) removing the organic solvent from the slurry of the milled product, purifying the milled product and drying the milled product with a spray type dryer.
专利号:US-12102615-B2 优先权日:2018-04-05 标 题:Synthesis of novel xylose free occidiofungin analogues and methods of using them 发明人:SMITH JAMES L; GENG MENGXIN; RAVICHANDRAN AKSHAYA; ORUGUNTY RAVI 权利人:TEXAS A & M UNIV SYS; SANO CHEMICALS 摘要:The subject invention pertains to methods for producing novel occidiofungin analogues lacking xylose (OF-Δxyl analogue). OF-Δxyl analogues can contain aldehyde, amine, triazole, or hydrazones. The aldehyde, amine, triazole or hydrazone containing analogues of OF-Δxyl can be further modified by substitution with additional functional groups. Various OF-Δxyl analogues described herein have reduced inflammation and toxicity and superior pharmacological properties compared to the natural occidiofungins. Accordingly, certain embodiments of the invention provide methods of treating or preventing fungal infections by administering to the subjects in need thereof the OF-Δxyl analogues described herein.
专利号:US-6365772-B1 优先权日:1995-05-30 标题 :Facile synthesis of phosphonomethylglycine from phosphonomethyliminodiacetic acid 发明人:CULLEN BARRY A; PARKER BRIAN A 权利人:HAMPSHIRE CHEMICAL CORP 摘要:A process for the preparation of phosphonomethylglycine in nearly quantitative yields which eliminates the use of a noble metal co-catalyst and its concomitant problems. The oxygen-containing gas is replaced with the much more chemically active hydrogen peroxide, which in combination with activated carbon, oxidizes the PMIDA to PMG in very high yield. The amount of oxidant allowed to react with PMIDA is a function of the concentration of oxygen in the gaseous reaction products, and is controlled by monitoring that concentration. In another embodiment, the oxidizing agent is an oxygen-containing gas. In either case, the concentration of oxygen in the gaseous reaction product is monitored to determine the end point of the reaction.
专利号:US-5973166-A 优先权日:1998-03-02 标 题 :Method for the preparation of maleimides 发明人:MIZORI FARHAD G; DERSHEM STEPHEN M 权利人:DEXTER CORP 摘要:In accordance with the present invention, there are provided improved methods for the preparation of maleimide monomers. This new method for the synthesis of maleimides is clearly superior to those documented in the prior art. Furthermore, the invention method utilizes materials with reduced toxicity, thus the overall process has a minimal impact on the environment. Thus, in accordance with the present invention, it has been discovered that certain amine salts can be successfully used to replace the polar, aprotic solvents cited in the prior art for the cyclodehydration of maleamic acids. The use of these salts provides competitive reaction times and product yields relative to results obtained with the polar, aprotic solvents. These salts have the advantage of having no vapor pressure and, therefore, have no possibility to co-distill with the water produced by the cyclodehydration reaction. Furthermore, such salts can be tailored to have desirable solubility characteristics (i.e., soluble in the refluxing azeotropic solvent, but insoluble at room temperature) that permit their easy removal from the reaction product. Such salts are not destroyed during the cyclodehydration reaction and, therefore, can be efficiently recycled again and again.
专利号:US-2010086482-A1 优先权日:2006-12-29 标 题:Divergent synthesis of looped poly(ester)-and poly(ether)-substituted dendrons and dendrimers 发明人:TOMALIA DONALD A; SWANSON DOUGLAS R; HUANG BAOHUA; PULGAM VEERA REDDY 权利人:DENDRITIC NANOTECHNOLOGIES INC 摘要:The present invention describes a process for preparing new looped dendrimer and dendron compounds by controlling the molar amount of branch cell reagent monomer that is combined with various cores bearing core-XR functionalities (e.g., primary, or secondary amines, thiol, or epoxy functionalities). These looped, macrocyclic structures are more robust to various conditions, with greater resistance to acid/base hydrolysis. Alternatively, the looped, macrocyclic structure may offer new orientations that would qualify it as a better chelation ligand for metals, and other similar uses.
专利号:US-10125226-B2 优先权日:2013-06-05 标 题 :Scale-up process of bifunctionalized triblock copolymers with secondary and tertiary amines, with application in dewatering and desalting of heavy crude oils 发明人:FLORES SANDOVAL CESAR ANDRES; FLORES OROPEZA EUGENIO ALEJANDRO; LOPEZ ORTEGA ALFONSO; HERNANDEZ CORTEZ JOSE GONZALO; ESTRADA BUENDIA ARISTEO; CASTRO SOTELO LAURA VERONICA; REYES MARTINEZ REYNA; ALVAREZ RAMIREZ FERNANDO; ESTRADA MARTINEZ ARQUIMEDES; VAZQUEZ MORENO FLAVIO SALVADOR 权利人:MEXICANO INST PETROL 摘要:A chemical synthesis process is provided for the functionalization of monodispersed triblock copolymer (POEw-POPy-POEw) with secondary or tertiary amines at a semi-industrial level in glass reactors having a capacity between 1 L and 100 L. The process includes two stages where the first stage uses an alkylsulfonyl or arylsulfonyl chloride to obtain better leaving groups, and the second stage is the nucleophilic substitution with secondary or tertiary amines, to obtain the bifunctionalized triblock copolymers. The main advantage for this process is to reduce the quantity of unitary process done in each stage, the optimization of reaction times, and the stoichiometric relationships.
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