Abstract: A surface conditioning composition is provided in which a titanium phosphate compound can be stored in the state of a dispersion liquid for a long period of time while being stably present in the dispersion liquid, with favorable stability also in the bath, and with the composition being capable of forming a conversion coating film in a sufficient amount of the film even in the case of application to conversion resistant metal materials such as high-tensile steel sheets.
Abstract: A metal surface treatment composition including at least one compound selected from the group consisting of a zirconium compound and a titanium compound, and an organosiloxane, which is a polycondensate of organosilane and has in a molecule thereof of at least two amino groups, in which the Degree of polycondensation of the organosiloxane is at least 40%, the content of at least one compound selected from the group consisting of the zirconium compound and the titanium compound is predetermined content, the content of the organosiloxane in the metal surface treatment composition is predetermined content, and the mass ratio of at least one element selected from the group consisting of the zirconium element and the titanium element contained in the zirconium compound and the titanium compound, respectively, to the silicon element contained in the organosiloxane is a predetermined ratio.
Abstract: Water-free metal oxide colloids or metal oxide polymers of the formula [M(O)X3X4]n (1) in an aprotic, organic solvent or solvent mixture, wherein M is Si, Ge, Sn, Ti, Zr or Hf; and X3 and X4 are independently O1/2, H, alkoxy (—OR), wherein R represents an organo radical having 1-20 C-atoms, alkyl having 1-20 C atoms or aryl having 6-C atoms, wherein the alkyl- or aryl radicals an include one or several other halogen substituents, selected from the group of F, Cl, Br or I; and n is from 10-1.000.000.
Abstract: This invention relates to a process for preparing magnesium alkoxide granulates. The process includes the steps of reacting magnesium metal with at least one compound of formula AlR3-nHaln and an alcohol in a non-coordinating solvent. R is an alkyl or aryl radical, Hal is a halogen radical and n is in the range of between 0 and 2.
Abstract: A process is described for preparing aryllithium compounds by reaction of metallic lithium in an ether-containing solvent with an aryl halide, wherein prior to or at the beginning of the reaction a catalyst is added, the catalyst containing a halogen-free, polynuclear aromatic (aryl catalyst) or consisting of such a compound.
Abstract: A method of treating metallic workpieces with an anodizing solution, compositions of the anodizing solution and the coatings prepared with this anodizing solution for anodizing metallic surfaces, especially surfaces of magnesium, magnesium alloys, aluminum and aluminum alloys, are disclosed. The compositions are basic aqueous solutions comprising a water-soluble inorganic hydroxide, phosphorus and oxygen containing anions, at least one surfactant and an alkaline buffer based on at least one alkaline hydrolyzed silane, on at least one alcohol showing at least one alkaline radical group or on a mixture of them.
Type:
Grant
Filed:
February 18, 2004
Date of Patent:
August 24, 2010
Assignees:
Chemetall GmbH, Alonim Holding Agricultural Cooperative Society Ltd.
Abstract: The invention relates to a highly reactive zinc form, to a method for the production thereof, and to the use of said highly reactive zinc form in synthetic chemistry.
Type:
Grant
Filed:
August 21, 2006
Date of Patent:
July 20, 2010
Assignee:
Chemetall GmbH
Inventors:
Sebastian Lang, Alexander Murso, Ulrich Wietelmann
Abstract: An automated process for the antistatic coating of plastic molding surfaces or for plastic-based or lacquer-based coatings by contacting the surface with a solution containing at least one surfactant, at least 20 wt. % of an organic solvent and, optionally, water.
Abstract: A composition for surface conditioning includes bivalent or trivalent metal phosphate particles having a pH of 3 to 12, with D50 of the particles being 3 ?m or less and including an amine compound having a MW of 1000 or less, plus at least one metal alkoxide in a content of from 0.01 to 1000 parts by weight per 100 parts by weight of the solid content of the metal phosphate particles.
Abstract: The invention relates to a mixture for applying a polymer, non-corrosive, electroconductive coating which can be shaped in a low-abrasive manner, to a base. Said mixture contains at least one substance A in the form of electroconductive hard particles, at least one substance B in the form of very soft or soft, inorganic, sliding, electroconductive or semiconductive particles, and/or at least one substance C in the form of metallic, soft or hard, electroconductive or semiconductive particles and/or soot, and optionally other constituents such as an anticorrosion pigment D, the sum of the parts by weight of the inorganic sliding particles B and the metallic particles and/or soot C amounting to between 0.25 and 99.5% of the parts by weight of the water-insoluble or only slightly water-soluble pigmentation S (A+B+C), and the size of the electroconductive hard particles A amounting to less than 10 ?m in relation to the particle size transfer value d99.
Type:
Grant
Filed:
April 17, 2003
Date of Patent:
June 15, 2010
Assignee:
Chemetall GmbH
Inventors:
Georg Gros, Norbert Maurus, Marcus Schinzel
Abstract: The invention relates to a mixture for applying a thin polymer, especially less than 6 ?m, non-corrosive, electroconductive or semiconductive coating which can be shaped in a low-abrasive manner, to a base.
Abstract: Boron chelate complexes of the general formula are described, where X is either —C(R1R2)— or —C(R1R2)—C(?O)—, in which R1, R2 independently of one another denote H, alkyl (with 1 to 5 C atoms), aryl, silyl or a polymer, and one of the alkyl radicals R1 or R2 may be bonded to a further chelatoborate radical, or X denotes 1,2-aryl with up to two substituents S in the positions 3 to 6 in which S1, S2 independently of one another denote alkyl (with 1 to 5 C atoms), fluorine or a polymer, as well as M+ denotes Li+, Na+, K+, Rb+, Cs+ or [(R3R4R5R6)N]+ or H+, where R3, R4, R5, R6 independently of one another denote H or alkyl with preferably 1 to 4 C atoms.
Type:
Grant
Filed:
February 16, 2006
Date of Patent:
May 4, 2010
Assignee:
Chemetall GmbH
Inventors:
Ulrich Wietelmann, Uwe Lischka, Klaus Schade, Jan-Christoph Panitz
Abstract: The present invention is directed to a process for forming a well visible non-chromate conversion coating on surfaces of magnesium and magnesium alloys, to a composition therefor and to a method of use for such coated articles having surfaces of magnesium or any magnesium alloy. The composition is a solution or dispersion comprising a fluorosilicon acid. The composition is preferably an aqueous solution having a pH in the range from 0.5 to 5 and includes often at least one pH adjustment agent. The thereof formed coating is useful to increase the corrosion resistance and the adhesion of magnesium and magnesium alloys to a paint coating, powder coating, e-coat, fluoropolymer coating, self-lubricant layer and adhesive bonding layer. The conversion coating may favorably be coated with a fluoropolymer coating, coated with a silane based sealing or both. The such formed coating is typically of grey mat non-metallic appearance.
Type:
Grant
Filed:
April 14, 2005
Date of Patent:
April 13, 2010
Assignees:
Chemetall GmbH, Alonim Holding Agricultural Cooperative Society Ltd.
Abstract: Methods are described for the production of hydrogen-bis(chelato)borates of the general formula H[BL1L2] and of alkali metal-bis(chelato)borates of the general formula M[BL1L2] where M=Li, Na, K, Rb, Cs L1=—OC(O)—(CR1R2)n—C(O)O— or —OC(O)—(CR3R4)—O— where n=0 or 1, R1, R2, R3, R4 independently of one another denote H, alkyl, aryl or silyl, L2=—OC(O)—(CR5R6)n—C(O)O— or —OC(O)—(CR7R8)—O— where n=0 or 1, R5, R6, R7, R8 independently of one another denote H, alkyl, aryl or silyl, wherein the respective raw materials are mixed in solid form without the addition of solvents and are reacted. Lithium-bis(oxalato)borate, lithium-bis(malonato)borate, caesium-bis-(oxalato)borate, caesium-bis-(malonato)borate and the mixed salts lithium(lactato,oxalato)borate and lithium(glycolato,oxalato)borate for example may be produced in this way.
Type:
Grant
Filed:
March 14, 2007
Date of Patent:
March 9, 2010
Assignee:
Chemetall GmbH
Inventors:
Ulrich Wietelmann, Uwe Lischka, Klaus Schade, Jan-Christoph Panitz
Abstract: A method is described for removing water and other protic impurities from an organic liquid electrolyte, wherein the organic liquid electrolyte is brought into contact with one or more insoluble alkali metal hydride(s) and the insoluble reaction by-products formed thereby are separated off.
Type:
Grant
Filed:
February 16, 2006
Date of Patent:
February 23, 2010
Assignee:
Chemetall GmbH
Inventors:
Ulrich Wietelmann, Klaus Schade, Uwe Lischka
Abstract: The invention relates to a method for coating a metallic strip. The strip or optionally, the strip sections produced from said strip in the subsequent process, is/are first coated with at least one anticorrosion layer—according to an alternative form of embodiment, this can be left out—and then with at least one layer of a paint-like coating containing polymers. After being coated with at least one anticorrosion layer or after being coated with at least one layer of a paint-like coating, the strip is divided into strip sections. The coated strip sections are then formed, joined and/or coated with at least one (other) paint-like coating and/or paint coating.
Type:
Grant
Filed:
October 10, 2001
Date of Patent:
November 10, 2009
Assignee:
Chemetall GmbH
Inventors:
Christian Jung, Toshiaki Shimakura, Norbert Maurus, Heribert Domes, Hardy Wietzoreck, Klaus Bittner, Thomas Kolberg, Marcus Schinzel
Abstract: A synthesis agent containing methyllithium and lithium bromide is described, in which MeLi and LiBr are dissolved in a solvent of the general formula (I) wherein R1 and R2 independently of one another are H, methyl (Me) or ethyl (Et), and R3 and R4 are Me or Et, the molar ratio of LiBr to MeLi being at least 0.7 and not more than 1.5 and the methyllithium concentration being at least 4 wt. %.
Type:
Grant
Filed:
August 23, 2005
Date of Patent:
March 10, 2009
Assignee:
Chemetall GmbH
Inventors:
Ute Emmel, Peter Rittmeyer, Ulrich Wietelmann, Rainer Aul