Abstract: A process for producing a one-piece, structured metal sheet having an interior with a hole, provides a predetermined, curved outer contour and inner contour that delimits the hole. A smooth, shaped blank is produced, having an outer edge substantially concentrically outside the predetermined outer contour and an inner edge substantially concentrically outside the predetermined inner contour. A structure, which preferably has formations running substantially radially, is then stamped into the metal sheet so that the sheet is formed with an approximately uniform degree of deformation in an inner boundary region and an outer boundary region. A metal sheet for a catalyst carrier body has an interior hole, an outer contour, an inner contour delimiting the hole and a structure with formations running approximately in radial direction. The metal sheet is produced in one piece and in particular is seamless.

Abstract: A honeycomb body for the chemical conversion of at least one component of a gas stream, in particular an exhaust-gas stream from an internal combustion engine, includes an inflow passage having an axis, and sheet-metal layers. At least some of the sheet-metal layers are structured to form two sets of crests and passages through which the gas stream can flow. Each of the sets of crests of each of the sheet-metal layers define a respective plane. The sheet-metal layers are segmented in circumferential direction of the honeycomb body. The axis and the plane include an angle of between 45° and 135°, preferably between 70° and 110°. The radial honeycomb body is particularly easy to produce.

Abstract: Filler which is surface-modified with a compound of the formula [(PG)—R1—Z]n—SP—[Y—R2—(AG)]m, in which AG is —COOH, —P(?O)(OH)2, —O—P(?O)(OH)2, —SO2OH, —SiR3R4X, or a chelating group; R1 is a C1-C3 alkylene group or cyclopropylene group or is absent; R2 is a C1-C10 alkylene group or is absent; R3 is a C1-C8 alkyl group, chlorine or OR5; R4 is a C1-C8 alkyl group, phenyl, chlorine or OR5; R5 is a C1-C6 alkyl group; X is OR5 or chlorine; Y is O, S, CO—NH, O—CO—NH, NH—CO—NH or is absent, Y being absent if R2 is absent; Z is O, S, CO—NR6, O—CO—NH, NH—CO—NH or is absent, R6 being H or C1-C6 alkyl; PG is a radically polymerizable group of the formula in which R9 is H, C1-C3 alkyl, C1-C3 hydroxyalkyl or COOR10; R10 is H, C1-C10 alkyl, 1,6-dimethylphenyl or mesityl; R11 is H or phenyl; m is 1 or 2; n is 1, 2, 3 or 4; SP is absent or is an (n+m)-valent linear or branched aliphatic C1-C30 radical, in which the carbon chain can be interrupted by O, S, CO—NH, O—CO—NH or NH—CO—NH, an (n+m)-valent aromatic C6-C18 radic

Abstract: Dental composition containing (i) at least one acid (meth)acrylamide monomer which has two or more polymerizable groups, (ii) at least one acid monomer which has only one polymerizable group and (iii) at least one polymerization initiator.

Abstract: Polymerizable dental material, characterized in that it contains at least one (meth)acrylamide phosphate of the following general formula (I): in which R1 is H or CH3; R2 is H or a C1-C4 alkyl radical or forms together with the nitrogen atom to which it is bonded and one or more atoms which belong to R3 or R3? a heterocyclic ring; R3, R3? independently of each other are a linear or branched aliphatic C1-C50 radical with a valency of m+n or p+n, an aromatic C6-C18 radical with a valency of m+n or p+n, or a cycloaliphatic, araliphatic or heterocyclic C3-C18 radical with a valency of m+n or p+n, wherein the carbon chains of the radical or radicals can be interrupted by O, S, CONR4, OCONH, or form together with one or more atoms which belong to R2 and the nitrogen atom, to which the R2 is bonded a heterocyclic ring, R3? being H if p=0, and R4 being H, C1-C10 alkyl, C6-C12 aryl, C6-C10 aralkyl or a bicylic C4-C12 radical; n is 1, 2, 3 or 4 if p=0, and is 1 or 2 if p?0; m is 1, 2, 3 or 4; p is 0, 1, 2, 3 or 4;

Abstract: A process is provided for preparing urea-containing polymers by contacting a hydroxy-functional organic compound having a functionality of two or more, with a coupling agent in the presence of a strong base, wherein the coupling agent is a carbonylbislactam compound having the general formula (I): wherein n is an integer from 3 to 15, and that the contacting is conducted at a temperature between 0° C. and 80° C. The polymers thus obtained are believed to be new and are useful e.g. in tissue engineering and coatings applications.

Abstract: Polymerizable materials which contain (1) 1 to 80 wt.-% of at least one polysiloxane, (2) 0.1 to 5 wt.-% of one or more initiators for radical polymerization, (3) 0 to 60 wt.-% of radically polymerizable monomer and (4) 1 to 50 wt.-% of one or more radically polymerizable monomers which carry at least phosphonic acid group, sulphonic acid group and/or mono- or dihydrogen phosphoric acid ester group, the polysiloxane (1), the monomer (3) or both being substituted by fluorine. The materials are suitable in particular for the coating of natural or artificial teeth.

Abstract: Acrylic ester phosphonic acids of general formula (I), stereoisomers thereof and mixtures of these, wherein n is 1 or 2, on the condition that for n=1 R1 has the meaning and for n=2 R1 has the meaning R2 is a C1 to C12 alkylene radical, C4-C8 cycloalkylene radical or C7 to C15 alkylene phenylene radical; R3 is hydrogen, a C1 to C5 alkyl radical or a C1 to C5 O-alkyl radical; and R4, R5, independently of each other, each stand for a C1 to C5 alkyl radical or a C1 to C5 O-alkyl radical.

Abstract: Acrylic ester phosphonic acids of general formula (I), stereoisomers thereof and mixtures of these, 1

Abstract: A process for producing a one-piece, structured metal sheet having an interior with a hole, provides a predetermined, curved outer contour and inner contour that delimits the hole. A smooth, shaped blank is produced, having an outer edge substantially concentrically outside the predetermined outer contour and an inner edge substantially concentrically outside the predetermined inner contour. A structure, which preferably has formations running substantially radially, is then stamped into the metal sheet so that the sheet is formed with an approximately uniform degree of deformation in an inner boundary region and an outer boundary region. A metal sheet for a catalyst carrier body has an interior hole, an outer contour, an inner contour delimiting the hole and a structure with formations running approximately in radial direction. The metal sheet is produced in one piece and in particular is seamless.

Abstract: A dental polymer film is described, which is suitable for coating and sealing tooth surfaces, in particular in the approximal space, and characterised in that it contains polymerisable groups.

Abstract: A method for operating a reformer installation for providing hydrogen-containing gas, especially during a starting phase of energy generation using a fuel cell, includes feeding an incoming stream to and discharging an outgoing stream from, the reformer unit, branching-off at least one outflowing partial stream from the outgoing stream, and feeding-back the outflowing partial stream, as an inflowing partial stream, to the incoming stream, to at least partially form a circulating stream. The outflowing partial stream has a composition corresponding to a composition of the outgoing stream upon emerging from the reformer unit. A reformer installation includes at least one reformer unit having feed and discharge lines and a line connecting the discharge line to the feed line, at least partially forming a circulating stream. The method and installation provide a highly efficient production of hydrogen and especially short times required for starting the reformer installation.

Abstract: A multi-stage shift reactor reduces a carbon monoxide content in a hydrogen-rich gas mixture stream flowing through the shift reactor in a flow direction. At least two catalyst carrier bodies have a honeycomb structure with passages through which the gas mixture stream can flow and are disposed in succession along the gas mixture stream flow direction. At least one heat exchanger is disposed between the at least two catalyst carrier bodies. Such a shift reactor is particularly suitable for the highly dynamic carbon monoxide conversion in a mobile fuel cell system. A method for reducing a carbon monoxide content in a hydrogen-rich gas mixture stream is also provided.

Abstract: A honeycomb body for the chemical conversion of at least one component of a gas stream, in particular an exhaust-gas stream from an internal combustion engine, includes an inflow passage having an axis, and sheet-metal layers. At least some of the sheet-metal layers are structured to form two sets of crests and passages through which the gas stream can flow. Each of the sets of crests of each of the sheet-metal layers define a respective plane. The sheet-metal layers are segmented in circumferential direction of the honeycomb body. The axis and the plane include an angle of between 45° and 135°, preferably between 70° and 110°. The radial honeycomb body is particularly easy to produce.

Abstract: The present invention relates to oligomeric copolymers of vinyl alcohol, vinyl esters and optionally, monomers that can be copolymerized with vinyl esters. The present invention also relates to processes for the production of these copolymers and to their used in the production of polyurethanes. Preferred oligomeric copolymers of the present invention include vinyl acetate/vinyl alcohol copolymers having a degree of polymerization of less than 30, and an OH-functionality of 1 to 15.