Abstract: Self-adhesive dental restorative composition comprising (i) 10 to 40 percent by weight based on the total weight of the composition of a mixture of hydrolysis-stable polymerizable monomers of the following formula (I): wherein R is a m+n valent organic group having 1 to 20 carbon atoms and optionally 1 to 5 atoms selected from the group of nitrogen, oxygen and sulfur atoms; A independently represents a moiety of the following formula (II): wherein L is a hydrogen atom, a C1-6 alkyl group, a C3-8 cycloalkyl group, a C6-14 aryl group or a group of the following formula (III) wherein R? is a hydrogen atom, a C1-6 alkyl group, a C3-8 cycloalkyl group, or a C6-14 aryl group; X is O, S, NH or NR? wherein R? is a C1-6 alkyl group, a C3-8 cycloalkyl group, a C6-14 aryl group; a is 0 or 1; M is a group of the following formula (IV) wherein Y is O, S, NH or NR?? wherein R?? is a C1-6 alkyl group, a C3-8 cycloalkyl group, a C6-14 aryl group; b is an integer of from O to 3; c is O or 1; d is an integer of from O to 3; pr

Abstract: Dental composition comprising an aqueous mixture containing (i) a polymerizable acidic phosphoric acid ester monomer of the following formula (A): wherein a is an integer of from 1 to 10; R1 represents a hydrogen atom or a moiety of the following formula (Y) wherein X independently represent an oxygen atom, a sulfur atom, or a group NR, wherein R may be a hydrogen atom, a C1-6 alkyl group or an acyl group; L represents an (a+b)-valent organic residue containing 1 to 20 carbon atoms and optionally including ether, thioether or amino groups or further acidic groups, whereby the carbon atoms comprise at least a+b carbon atoms selected from primary and secondary aliphatic carbon atoms, secondary alicyclic carbon atoms, and aromatic carbon atoms, each of said a+b carbon atoms linking a phosphate or 2-(oxaallyl) derivative group; b is an integer of from 1 to 10; R2 which may be the same or different, independently may be hydrogen, an allyl group or a moiety R1 wherein b is 1; provided that

Abstract: The invention relates to a slide bearing composite material which comprises a support layer from a copper alloy and a bearing coating applied to said support layer. The copper alloy may comprise 0.5 to 5% by weight of nickel, 0.2 to 2.5% by weight of silicon, ?0.1% by weight of lead. The bearing coating can be a galvanic layer, a sputter layer or a plastic layer. The invention also relates to methods of producing such a composite material.

Abstract: A one-part self-etching, self-priming dental adhesive having a pH of at most 2, which comprises an aqueous mixture containing (i) one or more polymerizable monomers optionally containing an acidic group, (ii) optionally one or more organic or inorganic acids, (iii) a polymerization initiator, and (iv) a thermal polymerisation inhibitor of the following formula (I): wherein R?1 represents a hydrogen atom, or a saturated hydrocarbon group having 1 to 18 carbon atoms. R?2, which may be the same or different if more than one R?2 is present, independently represent a saturated hydrocarbon group having 1 to 18 carbon atoms, and c represents an integer of from 1 to 4.

Abstract: Dithienopyrrole-containing copolymers, and organic semiconductors formed therefrom, used as p-type and donor compounds in semiconductors for organic photovoltaic (OPV) applications, such as solar cells or transistors, such as organic field effect transistors (OFET). Organic semiconductors formed herein have a low bandgap and high absorbance, increasing the efficiency of a transistor or a solar cell. Such dithienopyrrole-containing copolymers also have excellent hole-conductivity which may be even further improved through oxidation.

Abstract: An aqueous one-pack self-etching and self-priming dental adhesive composition having a pH of at most 2, which comprises: (i) a polymerizable N-substituted alkylacrylic or acrylic acid amide monomer which optionally contains an inorganic acidic moiety selected from a phosphonic acid moiety or a sulfonic acid moiety, and (ii) a curing system.

Abstract: Dental adhesive composition having a pH of at least 5, which comprises an aqueous solution containing (a) a polymerizable N-substituted alkyl acrylic or acrylic acid amide monomer; (b) a water-soluble polymerizable carboxylic acid; and (c) a water-soluble organic solvent.

Abstract: The invention concerns a separation column in microsystem technology for a gas chromatograph comprising a first substrate, a second substrate which is arranged on the first substrate, wherein a trench structure is provided in at least one substrate and the trench structure is sealed off relative to the environment, a stationary phase applied at least to parts of the trench structure, a gas inlet connected to the trench structure, and a gas outlet connected to the trench structure. Separation columns of that kind suffer from the problem that the stationary phase does not reliably adhere to the trench structure. According to the invention that problem is resolved by a bonding agent which is at least partly arranged between the walls of the trench structure and the stationary phase.

Abstract: One-part self-etching, self-priming dental adhesive composition having a pH of at most 2, which comprises (a) a polymerizable acidic phosphoric acid ester monomer (b) one or more polymerizable acidic monomers (c) a polymerizable N-substituted alkylacrylic or acrylic acid amide monomer; (d) optionally an organic and/or inorganic acid; (e) an organic water soluble solvent and/or water; and (f) polymerization initiator, inhibitor and stabilizer.

Abstract: The present invention provides a polymerizable phosphoric acid ester derivative having the following formula (A): wherein Z is COOR1, COSR1, CON(R1)2, CONR1 R2, or CONHR1, R1 and R2 independently are a hydrogen atom, a substituted or unsubstituted C1 to C18 alkyl group optionally substituted by a C3 to C8 cycloalkyl group, a substituted or unsubstituted C3 to C8 cycloalkyl group, a substituted or unsubstituted C4 to C,18 aryl or heteroaryl group, a substituted or unsubstituted C5 to C18 alkylaryl or alkylheteroaryl group, or a substituted or unsubstituted C7 to C30 aralkyl group, whereby two R1 residues may form together with the N-atom to which they are bonded a 5- to 7-membered heterocyclic ring which may contain beside said N-atom a further nitrogen atom or an oxygen atom, and whereby the substituted groups may be substituted by 1 to 5 C1 to C5 alkyl group(s); a is an integer of from 1 to 10, preferably 1 to 5; b is an integer of from 1 to 10, preferably 1 to 5; and R represents an organic residue containi

Abstract: The invention relates to a separating column, especially for miniaturised gas chromatograph. In addition to a micro-chromatograph provided with one or more inventive separating column. The inventive separating column prevents the known racetrack effect and can therefore be produced in a simple and economical manner. The separating column (1) comprises a channel (2) for a flow of fluid having analysate molecules. The flow of fluid comprises counter flowing curves (3, 4) with turning points (7, 8), the average diameter of the channel (2) is greater than the length of the path traversed by an analysate molecule when diffused between two turning points (7, 7a; 8, 8a).

Abstract: The invention relates to a miniaturized gas chromatograph and injector for the same. Said micro-GC is compact and simple and economical to construct. Dead volumes are largely avoided in order to achieve reliable and reproducible measured results. Said miniaturized gas chromatograph comprises at least one injector, one separation column and a detector which are combined on a circuit board to give a gas chromatography module. The injector comprises a first sheet with channels, which is provided with a second sheet with channels and which may be displaced relative to the latter, whereby at least one of the sheets provided with a layer of plastic, in particular a chemically inert plastic on the side of the sheet facing the other side.

Abstract: A composition including nanoparticles each having an acidic polymerizable siloxane moiety. For example, a hydrolysis stable, self-etching, self-priming dental adhesive composition including 90 to 10 percent by weight of an aqueous phase, and 10 to 90 percent by weight of acidic polymerizable nanoparticles. The acidic polymerizable nanoparticles are obtainable by hydrolysis of a mixture containing one or more hydrolyzable organosilicon compounds wherein (i) at least a portion of the hydrolyzable organosilicon compounds contains one or more polymerizable groups and (ii) at least a portion of the hydrolyzable organosilicon compounds contain one or more acidic moieties.

Abstract: An apparatus for dispensing fluid includes a base member having a feed channel and a slot nozzle having first and second spaced apart members. A slot-shaped outlet channel is in fluid communication with the feed channel and is defined between the first and second spaced apart members. A slot-shaped outlet opening is in fluid communication with the slot-shaped outlet channel and has a width defined between the first and second spaced apart members. A valve is coupled with the base member and selectively interrupts and releases the flow of fluid through the slot-shaped outlet opening. An adjustment device infinitely adjusts the position of the first member relative to the position of the second member to change the width of the slot-shaped outlet opening. A method for dispensing fluid onto a substrate includes directing the fluid through the slot-shaped outlet channel while continuously increasing the pressure of the fluid.

Abstract: A composition including nanoparticles each having an acidic polymerizable siloxane moiety. For example, a hydrolysis stable, self-etching, self-priming dental adhesive composition including 90 to 10 percent by weight of an aqueous phase, and 10 to 90 percent by weight of acidic polymerizable nanoparticles. The acidic polymerizable nanoparticles are obtainable by hydrolysis of a mixture containing one or more hydrolyzable organosilicon compounds wherein (i) at least a portion of the hydrolyzable organosilicon compounds contains one or more polymerizable groups and (ii) at least a portion of the hydrolyzable organosilicon compounds contain one or more acidic moieties.

Abstract: A measuring and evaluating device for the analysis of gases is described. The device has an exchangeable gas analyzer, which is of small dimensions. The gas analyzer is a module connected directly from the outside to a central unit, which is likewise of small dimensions and into which at least one evaluating unit and a display unit are integrated. Fitted releasably into the gas analyzer are one or more plates, into which at least one separating channel is respectively integrated. Each gas analyzer is provided with at least one sample injector, which can be connected to at least one separating channel. At least one detector is connected downstream of each separating channel.

Abstract: The present invention relates to the use of dye-stuffs of the general formula I in which R1, R2 and R3 and M⊕ are as defined in claim 1, as infrared-absorbing agents in hydrophilic colloidal layers, for example in recording materials or for detection purposes, recording materials, for example photographic recording materials, which comprise such dyestuffs in hydrophilic colloidal layers, and new dyestuffs of the general formula I.

Abstract: A measuring and evaluating device for the analysis of gases is described. The device has an exchangeable gas analyzer, which is of small dimensions. The gas analyzer is a module connected directly from the outside to a central unit, which is likewise of small dimensions and into which at least one evaluating unit and a display unit are integrated. Fitted releasably into the gas analyzer are one or more plates, into which at least one separating channel is respectively integrated. Each gas analyzer is provided with at least one sample injector, which can be connected to at least one separating channel. At least one detector is connected downstream of each separating channel.

Abstract: The present invention relates to the use of dye-stuffs of the general formula I in which R1, R2 and R3 and M• are as defined in claim 1, as infra-red-absorbing agents in hydrophilic colloidal layers, for example in recording materials or for detection purposes, recording materials, for example photographic recording materials, which comprise such dyestuffs in hydrophilic colloidal layers, and new dyestuffs of the general formula I.

Abstract: A bearing shell with at least one retaining cam which, when looking down on the partial surface of the bearing shell, has a rectangular external contour line and an indentation on the inside, the indentation being at its largest around the center (M) of the cam. The indentation, when looking down on the partial surface, has a curved contour line. The cam is made by being either hammered or pressed using a rounded blade.