Abstract: A process for preparing the d-threo isomer of methylphenidate hydrochloride which includes (i) resolving a racemic mixture of racemic threo-methylphenidate hydrochloride with a less than stoichiometric amount of tertiary amine base to obtain a methylphenidate-chiral acid salt, (ii) basifying the methylphenidate-chiral acid salt to obtain methylphenidate free base, and (iii) converting the methylphenidate free base into d-threo-methylphenidate hydrochloride.

Abstract: Apparatus for filtering liquids, comprising flat membrane pockets arranged parallel and means for pressure-tight connection of the membrane pockets to one another and for coupling an extraction means. The membrane pocket includes a drainage element, which is joined surface-to-surface to two membranes and is enclosed in a pressure-tight manner at the edge. Adjacent membrane pockets are connected to one another and to the extraction means via one or more outflow bores and associated lines. The outflow bores are arranged in such a way that the transmembrane differential pressure drops only slightly over the surface of the membrane pocket.

Abstract: Process for preparing oxcarbazepine according to the steps of chlorocarbonylating (a), ammonolysis (b), and deprotecting (c). The invention is characterized by the use of triphosgene as chlorocarbonylating agent in step a).

Abstract: The invention relates to a double-viscosed fibrous cellulose sausage casing having a pigmented outer cellulose hydrate layer and an impregnated internal cellulose hydrate layer. The impregnation of the internal cellulose hydrate layer includes a collagen hydrolysate and the outer cellulose hydrate layer includes at least one white pigment, preferably having titanium dioxide pigments. The invention further relates to a method for producing the fibrous cellulose sausage casing and also to its use as artificial sausage casing.

Abstract: The invention relates to a smoke-permeable, moisture-resistant, tubular, biaxially oriented, preferably also heat set food casing containing a mixture of at least one aliphatic (co)polyamide and at least one water-soluble synthetic polymer, and having a water vapor transmission rate of between 40 and 200 g/m2·d. The water-soluble polymer is preferably a polyvinyl alcohol. Optionally, the mixture also contains additives which influence the optics, haptics, moisture storage capacity and peeling behavior. The casing is preferably tubular and seamless and is produced by extrusion of a corresponding thermoplastic mixture. The inventive casing is preferably used as an artifical sausage casing, especially for smokeable scalded-emulsion sausages.

Abstract: The invention relates to a white, coextruded, oriented polyester film with a base layer (B) and with at least one outer layer (A), where the base layer (B) includes a whitening pigment and/or void-forming incompatible polymer at a concentration of from 2 to 35% by weight (based on the weight of the base layer (B)), and from 0.01 to 15% by weight (likewise based on the weight of the base layer (B)) of a pigment that absorbs laser energy. The invention further relates to a process for production of these films and to their use as laser-cuttable and laser-inscribable film.

Abstract: The invention relates to a white, coextruded, oriented polyester film with a base layer (B) and with at least one outer layer (A), where the base layer (B) includes from 2 to 35% by weight, based on the weight of the base layer (B), of a whitening pigment and/or void-forming incompatible polymer, and from 0.01 to 15% by weight, based on the weight of the base layer (B), of pigment that absorbs laser energy. The outer layer (A) includes from 1.0 to 35% by weight (based on the weight of the outer layer (A) of whitening pigment and/or void-forming incompatible polymer, and this pigment and/or polymer is identical with or different from the pigment and/or polymer in the base layer (B). The invention further relates to processes for production of these films and to their use as laser-cuttable film.

Abstract: The invention relates to a multilayer, white, biaxially oriented polyester film, which has a base layer B and at least one outer layer (A), where a) the base layer (B) includes, as sole whitening pigment, a concentration of from 5 to 25% by weight of barium sulfate, and b) the outer layer (A) includes, as sole whitening pigment, a concentration of from 5 to 25% by weight of barium sulfate, and also includes from 0.01 to 4% by weight of antiblocking agent whose median diameter (d50 value) is from 2 to 8 ?m.

Abstract: Method of performing condensation reactions, acylations or of preparing heterocycles comprising forming cyclic phosphonic anhydride of the formula (III) by a) reacting phosphonic acid derivatives of formula (I) with acetic anhydride at a temperature ranging between 30 and 150° C. while separating a mixture of ethanoic acid and acetic anhydride by means of distillation, b) then reactively distilling the oligomeric phosphonic acid anhydrides of formula (II) obtained in step a) and transforming the same into the corresponding cyclic trimeric phosphonic acid anhydrides of formula (III), wherein n represents a number between 0 and 300 while R represents allyl, aryl, or open-chain, cyclic, or branched C1 to C8 alkyl radicals, aryloxy, allyloxy, or alkoxy comprising open-chain, cyclic, or branched C1 to C8 alkyl radicals. Preferably the cyclic trimeric phosphonic acid anhydrides formed in step b) are immediately dissolved in an organic solvent that exhibits an inert behavior relative thereto.

Abstract: Biaxially oriented mono- or multilayered polyester film containing at least one UV stabilizer according to formula (I): wherein R1 is —H, C1-C12-alkyl, -aryl, —S—(C1-C12)-alkyl or —O—R9 or —O—(C1-C5)-alkylene-C(O)O—R9, wherein R9 is -aryl or C1-C12-alkyl, R3 and R4 and R2, R5, R6, R7 and R8 independently from each other represent —H, —(C1-C12)-alkyl, —O—(C1-C12)-alkyl, -aryl or —O-aryl, wherein said alkyl radicals with more than two C-atoms and alkylene radicals with more than one C-atom can be linear or branched.

Abstract: Disclosed is a shined tubular food casing based on a thermoplastic blend of at least one polyamide and/or copolyamide and at least one hydrophilic component. The casing is biaxially stretch-oriented and impregnated on the inside and/or outside with a component which allows the pleats which are formed during shining of the casing to adhere to each other. The component preferably comprises at least one polymer. The casing is preferably shirred at a ratio of 80:1 to 500:1. The inventive shined casing is particularly stable from a mechanical perspective and can therefore be used especially for the production of cooked sausages, scalded-emulsion sausages, and small sausages on fully automatic sausage stuffing and clipping apparatuses.

Abstract: The invention relates to a multilayered biaxially oriented polyolefin film in the form of a release film in a laminate which is coated on an outer surface thereof with a cold seal adhesive. The release film comprises a base layer and at least one outer layer. At least one layer of the release film contains wax having an average molecular weight Mn of 200-3000. The invention also relates to a method for producing the film and the use thereof.

Abstract: The invention relates to a multilayer polyester film comprising a hydrolysis stabilizer, wherein the hydrolysis stabilizer is an epoxidized alkyl ester of fatty acid or is a mixture of epoxidized alkyl esters of fatty acid or is an epoxidized fatty acid glyceride or is a mixture of epoxidized fatty acid glycerides, and at least one external layer of the film does not comprise the hydrolysis stabilizer. The form in which the hydrolysis stabilizer is added to the polyester can be that of dry liquid, absorbed by a carrier material.

Abstract: The invention relates to a biaxially oriented polyester film, preferably PET film, which has a hydrophilic coating on at least one surface. The coating composition used to form the hydrophilic coating includes water, a sulfopolyester, a surfactant, and optionally an adhesion-promoting polymer. The inventive films have a hydrophilic surface which inhibit condensation of water droplets on the films.

Abstract: A process is described for production of a biaxially oriented film which comprises at one crystallizable thermoplastic as main constituent and comprises at least 500 ppm, based on the weight of thermoplastic, of a pigment. The production process uses at least 20% by weight, based on the weight of the film, of recycled material of the same type whose molecular weight has been increased by condensation processes.

Abstract: The present invention relates to a biaxially oriented polyester film, which a) has a base layer B, which includes a yellow dye and a red dye, b) has, on each side of the base layer B, at least one layer (A or C) which includes, based on the weight of layer A or C, less than 0.01% by weight of the yellow dye and less than 0.01% by weight of the red dye, and c) the film has one absorption maximum lying at from 400 to 500 nm in the UV/visible spectrum from 400 to 800 nm. Preferred dyes are anthraquinone dyes and perinone dyes; the polyester is preferably PET. After metallization or lamination, the film has a gold appearance, and is a suitable packaging material.

Abstract: The invention relates to a biaxially oriented polyester film having at least one base layer (B) which includes from 0.25 to <1.0% by weight of SiO2 and from 0.25 to <1.0% by weight of TiO2. The invention further relates to a process for the production of the film and to its use. The inventive film features characteristic surfaces and defined optical properties, and has good suitability for use in the industrial sector.

Abstract: Disclosed is a monitoring system for collecting and/or transdermally rediffusing air containing environmental contaminants. The inventive monitoring system generally includes at least one diffusion collector and/or an equilibrium diffuser. The diffusion collector is provided with at least three layers, i.e. an adhesive layer that is in direct contact with the skin of a living being, a barrier layer, and a collecting layer on the exterior face of the monitoring system. The equilibrium diffuser includes an adhesive layer and a collecting layer. The collecting layers and the adhesive layers of the two components of the monitoring system are preferably made of the same material and have the same dimensions.

Abstract: The invention relates to biaxially oriented polyester films which are suitable for lamination to sheet metal; the invention in particular relates to a polyester film which (based on the weight of polyester) comprises from 1 to 8% by weight of isophthalate-derived units, and also comprises not only particles whose median diameter is from 0.1 to 2.0 ?m but also particles whose median diameter is from >2.5 ?m to <8 ?m. The invention further relates to a process for production of these films and to their use.

Abstract: Disclosed are a method and a device for grinding cellulose, in which a raw cellulose material (6) is uniformly moistened with a given quantity of liquid by means of a moistening unit (1) before being ground in a grinding mill (2). A first conveying mechanism (3) conveys the raw cellulose material (6) to the moistening unit (1) while a second conveying mechanism (4) conveys the moist raw cellulose material on the grinding mill (2).