Abstract: Sanitary applicances with a casing, such as bath tubs, shower trays or washbasins, are glass fiber- and asbestos-free, and are further characterized in that the reinforcing material is 1.5 to 10 mm thick and consists of one or two layers. The one layer or the first layer of a multilayered reinforcement is obtained by hardening a first polylmerizable, cole-hardenable, reactive (meth)acrylate system sprayed on the back of the acrylic glass moulding. The (meth)acrylate system contains as filler hollow microparticles, preferably made of plastics, filled with an inert gas. The composition of the (meth)acrylate system is defined by the invention. The disclosed sanitary appliances meet all requirements of the DIN EN 19 norm and can be recycled.

Abstract: Injection-molding materials comprised of polycarbonate can be processed into optically isotropic films in a chill roll extrusion method. The optically isotropic films are used as covering films for protecting data carriers (CD-ROMS) from becoming scratched, or they are used as supporting materials for the information layer.

Abstract: The invention concerns a method for the production of a flat composite (5) from plastic parts by means of a thermal adhesion of two plastic parts (1,1′), heated on one side of their surfaces (1a,1a′), consisting of plastics A and B, wherein the surfaces (1a,1a′) are heated on the adhesion side to surface temperatures of 10 to 100° K.

Abstract: A process for the synthesis of hydrogen cyanide by the Andrussow process by reaction of methane or methane-containing natural gas, ammonia and oxygen or oxygen-enriched air on a catalyst at an elevated temperature, wherein O 2 O 2 + N 2 = 0.25 - 1.0 ⁢   ⁢ ( vol / vol ) .

Abstract: The invention discloses methods for inducing a desired T helper lymphocyte regulated immune response by delivering an immunogen to a preselected region of the gastrointestinal tract of a subject. The invention finds application in the immunological and biomedical fields.

Abstract: The invention relates to a process for making molded articles by means of injection molding with the process steps of a) melting of a (meth)acrylate copolymer, which is composed of 30 to 80 wt % of radical-polymerized C1 to C4 alkyl esters of acrylic or methacrylic acid and 70 to 20 wt % of (meth)acrylate monomers with a tertiary ammonium group in the alkyl residue, wherein the (meth)acrylate copolymer is present in a mixture with 1 to 70 wt % of a plasticizer and a desiccant in the ratio of 1:1 to 1:20 and also with 0.05 to 5 wt % of a release agent, and further standard additives or adjuvants and if necessary even a pharmaceutical active principle can also be present in the mixture, and before the mixture is melted it has a content of more than 0.5 wt % of low-boiling constituents with a vapor pressure of at least 1.9 bar at 120° C., b) degassing of the mixture in the thermoplastic condition at temperatures of at least 120° C.

Abstract: A plastisol is disclosed comprising as a mixture I. one or more polymers and/or copolymers of (meth)acrylates obtainable by polymerising compositions which contain as polymerisable constituents A) 20 to 100 wt. % of methyl methacrylate, B) 0 to 80 wt. % of a (meth)acrylate of the formula I other than methyl methacrylate,  in which R1 denotes hydrogen or methyl and R2 denotes a linear or branched alkyl residue having 1 to 18 carbon atoms, C) 0 to 40 wt. % of a further unsaturated monomer other than A) and B) and D) 0 to 40 wt. % of an adhesion-promoting monomer,  wherein A) to D) constitute 100 wt. % of the polymerisable constituents, II. proportions of 5 to 400 parts by weight of plasticisers compatible with the polymers and/or copolymers of I per 100 parts by weight of the latter and III.

Abstract: The invention relates to a shaping tool for the injection molding or injection compression of information carrier disc blanks (11) made of polymethacrylate plastic which is suited as a component of an injection molding or injection compression machine. The shaping tool is comprised of two mold parts (1, 2), whereby one mold part (1) contains a bottom part (8) of a mold with the information data and, together with the second mold part (2), forms a cavity for the one information carrier blank and one sprue bush (4) for a sprue piece (5) in the tool having a concentrically positioned feed orifice (6). In addition, the tool comprises a impact cylinder (9) for shearing the sprue piece (5) and has an ejector pin (10). The invention is characterized in that the injection gap (SP) between the feed orifice (6) of the sprue piece (5) and the information carrier disc blank (11) is less than 0.3 mm.

Abstract: Acrylic or methacrylic acid esters may be efficiently prepared by the transesterification of a C1 to C4 alcohol ester of acrylic or methacrylic acid and a different alcohol in the presence of a mixture of a) an alkali metal cyanate or alkali metal thiocyanate, and b) an alkaline earth metal oxide, an alkaline earth metal hydroxide or an alkali metal halide.

Abstract: A process for the production of a translucent, IR-reflective plastic element, consisting entirely or at least in part of an impact-resistant, thermoplastic plastic, containing IR-reflective particles made of a lamellar-shaped carrier pigments coated with a metal oxide and the plastic element made therefrom.

Abstract: Injection-molding materials comprised of polycarbonate can be processed into optically isotropic films in a chill roll extrusion method. The optically isotropic films for protecting data carriers (CD-ROMS) from becoming scratched, or they are used as supporting materials for the information layer.

Abstract: Backed sanitaryware, such as baths, shower trays, wash basins and the like comprise an acrylic polymer moulding, the reverse of which is reinforced with a polymer material containing neither glass fibre nor asbestos, which material is firmly bonded to the acrylic polymer moulding, wherein the reinforcement is obtainable by curing a polymerisable, cold-curing reactive (meth)acrylate system sprayed onto the reverse of the acrylic polymer moulding, which system contains, in addition to further constituents, A) as polymerisable monomers: A)  a) (meth)acrylate 30-100 wt. % a1) methyl (meth)acrylate   0-99.8 wt. % a2) C2—C4(meth)acrylate   0-99.8 wt. % a3) ≧C5 (meth)acrylate 0-50 wt. % a4) polyfunctional (meth)acrylates 0-50 wt. % a5) urethane (meth)acrylates 0.2-50 wt. %    b) comonomers 0-70 wt. % b1) vinyl aromatics 0-35 wt.

Abstract: An extrusion die has a distributing tool; a profiling nozzle; and at least three melt-flow ducts; a first melt-flow duct is routed around a second melt-flow duct or the distributing tool using a branch and is merged again downstream from the branch; and a third melt-flow duct opens into the second melt-flow duct. The extrusion die is suitable for extrusion of a hollow-chamber profiled panel of a thermoplastic plastic with a layered structure which comprises a top and bottom layer of a first plastic melt; and an intermediate layer of a second plastic melt disposed in an interior of a hollow chamber profile. The first plastic melt is allocated to the first melt-flow duct and to the second melt-flow duct and the second plastic melt is allocated to the third melt-flow duct. During the extrusion the second plastic melt is deposited onto the first plastic melt upstream from or in the region of the branch, and a distribution of the deposited second plastic melt is regulated using the distributing tool.

Abstract: There are provided plastisols based on poly(meth)acrylate which have a mean molecular weight in excess of 3,500,000 which have superior shelf life, tensile strength extensibility and viscosity as well as gel formation and filmforming propeties to those known heretofore. These plastisols are formed by emulsion polymerization.

Abstract: A process and device for the stable width wise regulation of the bulb angle in connection with the extrusion of sheets of heat-sensitive plastic (2) in an extrusion device with a calendar opening formed by two intake rollers (3,2) and a traversing measuring device (7) provided according to the calendar slot by altering positioning elements on the extrusion device. At least two traversing measurements of a parameter correlating with the bulb angle are started consecutively on the heat-sensitive plastic sheet synchronously with the positioning of one of the two calendar rollers. Like measurement conditions therefore exist and the deviation of the measured values obtained on the basis of the measurements in relation to specified expected values is used to regulate the bulb angle over its width by altering a setting element on the extrusion device.

Abstract: Isobornyl (meth)acrylate is synthesized by a two-stage one-pot process, wherein isobornyl acetate is converted to isoborneol followed by transesterification with (meth)acrylic acid methyl ester, without isolation of the intermediates or purification of the product.

Abstract: Motor oils and transmission oils of the usual commercial SAE single- and multiple viscosity classes, which oils contain polymeric additives and which have high dispersivity and good wear protection characteristics, said oils containing the following additives: (i) at least one heavy-duty (HD) additive, which contains phosphorus compounds; and (ii) as dispersive polymeric components PC, cooligomers copolymers, or combinations thereof comprised of: (a) units of C6-24 alkyl (meth)acrylates, (b) units of at least one functionalized alkyl (meth)acrylate, (c) units of one or more C1-5-alkyl (meth)acrylate monomers, and (d) units of 1-alkenes, with the following provisions: (1) the units of formulas I and II together comprise 100 wt. %, (2) the content of polymer components) PC in the additive-containing mineral oils is in the range 0.5-50 wt. %, and (3) the content of phosphorus in the additive-containing mineral oils is less than or equal to 0.08 wt. %.

Abstract: The invention relates to a polymethacrylate matte-finish surface and comprised of: A thermoplastic polymer matrix A, in the amount of 99.9-30 wt. %, comprised of a hard phase (a1) and a tough phase (a2); and Latex particles of a thermoelastic polymer B, in t. of 0.1-70 wt. %, incorporated in the said matrix A, which particles give rise to the matte effect. Preferably the hard phase (a1) may contain low molecular weight and/or polymer-bound UV-absorbers. The difference between index of refraction of the thermoplastic polymer A and that of the thermoelastic polymer B is at most 0.02. Despite its matte finish, the film has high transparency, is weather resistant, has low incidence of white fracture when buckled or folded, and has impact strength which does not degrade upon cooling or heating. At the same time, the film is effective as a UV filter, to protect substrates which are sensitive to UV irradiation.

Abstract: A process for preparing an unsaturated carboxylic acid anhydride, which includes: reacting an unsaturated carboxylic acid and a lower aliphatic carboxylic acid anhydride in the presence of: a catalyst; and a stabilizer.

Abstract: Copolymerizates of methyl methacrylate and butyl methacrylate are used as plastisols in the automotive sector and as floor coverings. The invention describes a way to increase the storage stability of the plastisols by using small amounts of cross-linking agents.