摘要:
Disclosed herein are disclosed a novel ceramide and, specifically, 1-O-acylceramide having a structure in which a phytosphingosine base has fatty acid chains attached thereto in opposite directions, an isomer thereof, a salt thereof, a solvate thereof, or a hydrate thereof, a use thereof for enhancing a skin barrier function, and a preparation method therefor. 1-O-acylceramide with a purity of 70% or higher can be prepared using the method and is capable of reinforcing a skin barrier function, recovery or amelioration from a weakened skin barrier function, and treating or preventing diseases caused by a decrease in skin barrier function, thereby finding applications in various cosmetics and therapeutic formulations for skin disease.
摘要:
This invention relates to the synthesis for a precursor of E6020, compound 26, via a β -keto amide alcohol intermediate, compound 22, The synthesis reacts compound 22 with compound 25 and the resultant intermediate is oxidized to produce compound 26, the precursor to E6020. Compounds 22 and 25, and their crystalline forms, represent separate embodiments of the invention. The invention also relates to compounds of formulas (3) and (4) and processes for their preparation. The β -keto amide alcohol intermediate compound 22 is a compound of formula (3). Compound 25 is a compound of formula (4).
摘要:
Allylated amide compounds are formulated into curable compositions with a free radical curing agent, and optionally, one or more fillers, for use as adhesives in the manufacture of microelectronic devices.
摘要:
A water-soluble monomer is shown by general formula (1) below. This monomer, for example, can be obtained by reacting asparagic acid and maleic anhydride in an aqueous basic solution under cooled conditions. A water-soluble polymer has a structural unit of general formula (2) below and a weight-average molecular weight of about 800 to about 8,000,000, and is, for example, produced by polymerizing a monomer including the water-soluble monomer of general formula (1). The water-soluble polymer has excellent chelating and dispersing actions and therefore can favorably be used for various purposes, such as, detergent compositions, inorganic-pigment dispersants, fiber-treating agents, water-treating agents, wood pulp-bleaching assistants.
摘要:
Die Erfindung betrifft Alkenylbernsteinsäurehalbamide der Formeln
oder
worin R C 13 -C 30 -Alkenyl ist und Me ein Alkalimetallion, ein Proton oder ein Ammoniumion der Formel + NHR 1 R 2 R 3 bedeutet und R i , R 2 und R 3 gleich oder verschieden sind und Wasserstoff, 2-Hydroxyethyl oder 2-Hydroxypropyl bedeuten. Weiter betrifft die Erfindung die Verwendung dieser Alkenylbernsteinsäurehalbamide als Korrosionsschutzmittel in wasser- und/oder mineralölhaltigen Formulierungen, gegebenenfalls zusammen mit Oxethylaten und/oder Fettsäurealkanolamiden, sowie wasser- und/oder mineralölhaltige Korrosionsschutzmittel, enthaltend derartige Alkenylbernsteinsäurehalbamide.
摘要:
Amidoamin-Salze von Alkenylbernsteinsäurederivaten der Formeln wobei R 1 C 6 -C 22 , vorzugsweise C 9 -C 18 -Alkenyl,
X eine Gruppe der Formel OH, OR 2 , NH-R2 oder , R 2 C 1 -C 18 -Alkyl oder Cycloalkyl, A ein Amidoamin der Formel II
in protonierter Form, R 3 C 5 -C 22 -, vorzugsweise C 10 -C 18 -Alkyl, C 5 -C 22 -, vorzugsweise C 10 -C 18 -Alkenyl oder Cycloalkyl, R 4 eine Gruppe der Formel -(CH2- Y eine Gruppe der Formeln
OH oder NH 2 , Z Wasserstoff oder Methyl, n eine Zahl von 0 bis 12 und x eine Zahl von 1 bis 3 bedeuten. Die genannten Salze werden eingesetzt als Korrosionsinhibitoren bei Öl-Wasser Emulsionne, besonders bei Erdöl.