CAS: 3007-31-6; Didodecylamine

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专利信息

专利号:US-2006154380-A1
优先权日:2004-06-23
标题:Synthesis of ordered arrays from gold clusters
发明人：EGUSA SHUNJI; JIN RONGCHAO; SCHERER NORBERT F
权利人:EGUSA SHUNJI; JIN RONGCHAO; SCHERER NORBERT F
摘要:A nanocluster includes 1 to 7 metal atoms and has at least one ligand, which is associated with at least one of the metal atoms. A method of making a nanocluster consists of combining a nanoparticle, a ligand and a high boiling point solvent to provide a mixture and heating the mixture at a temperature of at least about 125° C. to form a nanocluster with 1 to 7 metal atoms. An ordered array of nanostructures includes a substrate and a plurality of nanostructures on the substrate, where the nanostructures are made by forming a solution of nanoclusters, depositing the solution on a substrate, and heating the substrate.

专利号:US-10052692-B2
优先权日:2012-08-11
标题:One pot process for the preparation of ultra-small size transition metal nanoparticles
发明人：BHAGAVATULA PRASAD LAKSHMI VARA; SETH JHUMUR
权利人:COUNCIL SCIENT IND RES
摘要:Disclosed is a one pot process for the synthesis of ultra-small uniform-sized (1-3 nm) transition metal nanoparticles with shape tunability. These nanoparticles have uses in various fields, including catalysis and fuel cells.

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-6150403-A
优先权日:1997-10-14
标 题 :Topical compositions for regulating the oily/shiny appearance of skin
发明人：BIEDERMANN KIMBERLY A; SCHUBERT HARRY L; PARRAN JR JOHN J
权利人:PROCTER & GAMBLE
摘要:The present invention relates to methods for inhibiting sebaceous gland activity in mammalian skin comprising administration of a topical composition comprising dehydroacetic acid or pharmaceutically acceptable salts thereof, and a dermatologically-acceptable carrier. The present invention also relates to methods and topical compositions further comprising agents which regulate the oily and/or shiny appearance of skin, and agents which treat acne and related skin disorders in mammalian skin and scalp. Methods of reducing sebum synthesis with the use of dehydroacetic acid, methods of regulating the oily and/or shiny appearance of skin, and methods of treating acne and other skin disorders are also encompassed by the present invention.

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.

专利号:US-4754077-A
优先权日:1982-12-16
标题:Antioxidant synthesis
发明人：MINA GEORGE L
权利人:ETHYL CORP
摘要:A process for making a 2,6-di-hydrocarbyl-4-alkoxyalkylphenol, e.g. 2,6-di-tert-butyl-4-methoxymethylphenol, by reacting a 2,6-dihydrocarbylphenol with formaldehyde in a stoichiometric excess of alcohol and in the presence of a Mannich base catalyst preferably formed in situ by adding a catalyst-forming amount of a secondary amine, e.g. dimethylamine, to the mixture of 2,6-di-hydrocarbylphenol, formaldehyde and alcohol. Unreacted alcohol and amine are distilled out and the 2,6-di-hydrocarbyl-4-alkoxyalkylphenol is reacted with a benzene-type compound, e.g. mesitylene, to make a hindered phenolic antioxidant, e.g. 1,3,5-trimethyl-2,4,6-tri-(3,5-di-tert-butyl-4-hydroxybenzyl)benzene.