43 results about "Acetylpyruvic acid" patented technology

An electroluminescent device having a phosphor layer including a phosphor material and a pair of electrodes for applying a voltage to the foregoing phosphor layer wherein an acetylacetonato complex salt is included in the phosphor layer to realize an electroluminescent device with high luminance. Further, the EL device realizes an electroluminescent device with higher luminance by constructing the foregoing phosphor layer so as to contain acetylacetonato complex salt, in which ligands coordinate with a trivalent metal atom, particularly a metal atom of Group III or Group XIII as the foregoing acetylacetonato complex salt.

The present invention provides a sol-gel composition which is dilutable with water in any proportion and is based on the reaction of at least the following components: (i) a glycidyloxypropylalkoxysilane, (ii) an aqueous silica sol having a solids content of higher than 1% by weight, (iii) an organic acid as hydrolysis catalyst, and (iv) n-propyl zirconate, butyl titanate or titanium acetylacetonate as crosslinker, wherein a mass ratio of the solids mass of component (ii) to component (i) starts from 0.75. The invention relates to a process for preparing the composition and uses of the composition, in particular as a sol-gel composition for corrosion control coatings, a corresponding corrosion control coating or primer coating, and articles equipped with the coating.

Disclosed is a method for providing an anti-corrosion protective coating to a metal substrate that uses a coating composition comprising a resin and a polyfunctional bridging molecule to both bind to the resin and to chelate the bound polymeric resin directly to the metal substrate. One category of polyfunctional bridging molecules preferably includes at least one amine function to bind to a resin and at least one carboxylate, thiol, silane, phenolate, acetoacetonate, imine, phosphate, or phosphonate function to chelate to a metal substrate. It is theorized that the amine function can bind to certain pendent chains in coating resins through a Michael addition reaction while the carboxylate, thiol, silane, phenolate, acetoacetonate, imine, phosphate, or phosphonate functions chelate to the metal substrate. These polyfunctional bridging molecules provide an organic binding of the resin to the metal substrates.

Disclosed is a rubber composition for adhesive bonding which contains 100 parts by weight of a rubber component and 0.1-3 parts by weight of a metal acetylacetonate having an average particle diameter of not more than 50 mum. Such a rubber composition for adhesive bonding is improved in break characteristics.

Highly fluorescent metal-supramolecules based on terpyridyl monomers and transition metals were obtained. These robust supramolecules offer high quantum yields from violet to blue, green or yellow emission. Owing to desirable properties such as high brightness, high purity, low cost, and high thermal stability, these supramolecules appear to be promising emitters for polymeric light-emitting diodes (PLEDs). The molecular structure of the supramolecule is represented by formula I: (I) wherein M represents IB, IIB, VIIA, VIIIA group or lanthanide metal; R is each independently selected from hydrogen, halogen, alkyl, substituted Alkyl, aryl, substituted aryl or well-known donor and acceptor groups; X is independently in each occurrence and is a nitrogen or carbon atom; R' is selected from alkoxy, aryloxy, hetero Aryloxy, alkyl, aryl, heteroaryl, alkyl ketone, aryl ketone, heteroaryl ketone, alkyl ester, aryl ester, heteroaryl ester, alkyl amide, aryl amide, heteroaryl amide, alkylthio, arylthio, fluoroalkyl, fluoroaryl, amine, imide, carboxylate, sulfonyl, alkyleneoxy, polyalkyleneoxy, or combinations thereof . n is an integer from 1 to 100,000; Z is a counterion selected from the group consisting of acetate, acetylacetonate, cyclohexanebutyrate, ethylhexanoate, halide, hexafluorophosphate, hexafluoroacetylacetonate, nitrate, Perchlorate, phosphate, sulfate, tetrafluoroborate or fluoromethanesulfonate; y is an integer from 0-4.

The invention discloses a method for synthesizing ruthenium acetylacetonate (III). The synthesizing method comprises the following steps: a, dissolving ruthenium trichloride hydrate into water to react with alkali to generate ruthenium hydroxide and dissolving by strong acid after washing to remove chlorine ions to obtain a ruthenium salt solution; b, reacting acyl acetone with alkali to obtain acetylacetonate; c, reacting the ruthenium salt solution with the acetylacetonate solution, generating deep red ruthenium acetylacetonate (III) precipitate under the heating condition and purifying by dichloromethane, wherein a yield is 80 to 90%, and a chlorine ion content is smaller than 50ppm. A total reaction equation is shown in a following image, wherein HL is non-coordinating anion strong acid, acac is acetylacetone acid radial which is shown in a following image, and the M is Na or K. The method disclosed by the invention has the advantages that a high yield of the ruthenium acetylacetonate (III) is ensured, a content of impurity chlorine ions is reduced at the same time, product quality is improved and is favorable for industrial production.