Abstract: The invention relates to sulfur-containing polymethacrylates P produced by radical polymerization of monomers of formula I: ##STR1## where Y represents a C.sub.2-12 alkyl group, a C.sub.2-12 branched alkyl group, a C.sub.3-12 cyclic alkyl group, a C.sub.6-14 aryl group, or a C.sub.7-26 alkaryl group, wherein the carbon chains of Y may be interrupted by one or more ether or thioether groups; andR represents hydrogen or methyl; andwherewith the polymer P contains, in addition to units of monomer(s) of formula I, units of at least one monomer of formula II: ##STR2## where R and Y have the same meanings as above; and n is an integer in the range 1 to 6.

Abstract: The present invention relates to a process for the production of methacrylic acid and methacrolein by means of gas phase oxidation of isobutane in the gaseous phase at 250.degree. to 450.degree. C. on molybdenum heteropoly acid catalysts that are made up of CU.sub.a H.sub.b P.sub.c Mo.sub.d V.sub.e O.sub.f heteropoly acid compounds (I), where a=0.1 to 1, b=0 to 7.8, c=0.8 to 1.2, d=9 to 12, e=0.5 to 3, and f depends on the molar numbers a to e, and/or the heteropoly acid H.sub.8 PMo.sub.10 VO.sub.39 (II) or its anhydride PMo.sub.10 VO.sub.35 (III).

Abstract: An enzyme is purified by absorbing enzymes in an aqueous solution on a specific carrier material T-PbA to which is covalently bound phenyl butylamine ligand groups.

Abstract: The invention relates to liquid crystalline polymers which form exclusively nematic liquid crystalline phases. The liquid crystalline polymers are comprised of units of at least trinuclear liquid crystalline azo dye monomers M with lateral asymmetry.

Abstract: A process for the preparation of a water-soluble polymer suspension, which dissolves rapidly in water, is provided wherein the polymer is prepared froma) 30 to 99.99% by wt. of an alkali, ammonium, or amine salt of acrylic or methacrylic acid or a mixture thereof,b) 0.01 to 5% of a crosslinking monomer having at least two polymerizable double bonds andc) 0 to 69.99% by wt. of one or more hydrophilic comonomers different from a) and b) above,and at least one solvent selected from the group consisting of oligoalkylene oxide compounds of formula I ##STR1## where R=H or CH.sub.3R.sub.1 =H, CH.sub.3 or C.sub.2 H.sub.3n=2, 3 or 4,wherein the suspension contains no more than 0.5% by weight of water, based on the total amount of solvent, to give a thickener which is stable in long term storage and which, upon addition to water, yields a highly viscous, briefly separating, microgel-like solution.

Abstract: A flat web of sizable thickness made of thermoplastic can be extruded from an extrusion die without a restrictor bar if a thickness D of a restricting passage is made smaller than a shaping distance A of die lips (4, 5), and if at least one wall of the restricting passage (6) is adjustably designed as an elastic lip (7) by adjusting elements (8), so that thickness D and distance A can be changed at the same time by actuating the adjusting elements.

Abstract: The present invention provides a polymer-modified bitumeniferous composition containing polymer components in the amount of 0.5-50 wt. %, wherein 20-100 wt. % of the polymeric additive is a copolymer comprises of units of: C.sub.6 -C.sub.28 -alkyl (meth)acrylates in the amount of 80-99.9 wt. %, maleic anhydride in the amount of 0.1-20 wt. %, and other polymerizable compounds in the amount of 0-19.9 wt %. The polymer-modified bitumens exhibit excellent and persistent homogeneity, high elastic resilience, and a good range of plasticity.

Abstract: The present invention relates to a method of manufacturing molded polymer articles comprised of casting resins and having color-differentiated surface regions, wherein prior to the charging of the casting resin, a surface region of the molding implement is coated with a hardenable coating of a colorant-containing composition, producing color-differentiation in the surface of the molded articles. The designated surface regions of the molding implement are coated with at least two layers, whereby, according to the present method, the first coating step applies a filler-containing coating dispersion (L-1) without added colorant, and the second coating step applies a colorant-containing coating (L-2) without filler. Thereafter, the coating layers are dried, the casting resin is charged to the molding implement, the resin is polymerized by heating, and the molded articles removed from the mold.

Abstract: Graft polymerizates on the basis of acrylates and methacrylates, comprise one or more graft monomers of the formula (I) ##STR1## where R.sub.1 stands for a hydrocarbon group having 2-24 carbon atoms and a base polymer of which 55-100 wt. % is synthesized from one or more monomers of the formula (II) ##STR2## wherein R.sub.2 stands for a hydrocarbon group having 2-24 carbon atoms, provided that the groups R.sub.1 and R.sub.2 exhibit Van-der-Waals volumes which differ by less than 30%, and that at least 10 wt. % based on the total monomers of formula (I) are grafted on the base polymer.

Abstract: Extruded, smooth finished solid sheet or film, which may have a thickness <1 mm, comprised of a thermoplastic plastic (such as polycarbonate) with a glass transition temperature >50.degree. C., which under conditions of orientation displays optical birefringence, may be manufactured into a flat strip with smooth finished surfaces, to yield a strip which has characteristics as follows:optical birefringence path difference less than or equal to 50 nm (single pass);low surface roughness;low variation in thickness; by extrusion of the plastic in a thermoplastic state, through a slot nozzle;wherein during or after the smoothing of the two surfaces one of the surfaces of the strip is cooled to below the glass transition temperature, while the other surface and the predominant part of the interior region of the strip remain in the thermoplastic state and the strip is cooled to below the glass transition temperature, under conditions which minimize the deforming forces on the surfaces of the extruded strip.

Abstract: Thermoplastically processable polymer mixtures with high solvent resistance. The polymer mixtures are made up ofA) 2-98 wt. % of a polymer that is composed of at least 80 wt. % of monomer units of CH.sub.2 .dbd.CF.sub.2, andB) 98-2 wt. % of a polymer that consists of (.alpha.) 20-90 wt. % of monomer units of Formula I ##STR1## in which R stands for an alkyl group with 1 to 3 carbon atoms and X stands for a ##STR2## and of (.beta.) 80-10 wt. % of a chemically crosslinked polymer with a glass transition temperature below 0.degree. C., that is bonded to at least 5 wt. % of the polymer formed from the monomer of Formula (I).

Abstract: The present invention is directed to a plasma generator which can generate a localized plasma. To localize the plasma, a low pressure plasma generator, containing a vacuum chamber and at least one microwave radiation source, which does not by itself produce a field strength sufficient to form plasma in the vacuum chamber, is equipped with at least one aerial for the radiation of microwaves. This at least one aerial acts as a secondary radiator in the vacuum chamber and can generate a localized plasma at its free tips.

Abstract: A pharmaceutically efficacious pteridine compound of formula I: ##STR1## wherein A denote a bridging hydrocarbon group containing 1 to 8 carbon atoms and containing a ##STR2## group directly bonded to the phenyl group and one of the methylene radicals of the bridging A group is optionally replaced by --O--; R.sub.1 is hydrogen, a cycloalkyl group with up to 7 carbon ring atoms, or an alkyl group having 1 to 6 carbon atoms, benzyl, or aryl; R.sub.2 is hydrogen or an alkyl group having 1 to 6 carbon atoms, or wherein R.sub.1 and R.sub.2 together form a five- or six-membered heterocyclic group which optionally contains additional hetero atoms selected from the group consisting of nitrogen, oxygen, and sulfur; R.sub.3 is hydrogen or an alkyl group having 1 to 3 carbon atoms; R.sub.3 ' is hydrogen, an optionally substituted alkyl group having 1 to 3 carbon atoms, carboxyl, hydroxyl or R.sub.3 and R.sub.

Abstract: Antibodies which are immobilized and covalently bound to a matrix polymer by means of a modification in a carbohydrate region of the antibodies; wherein the binding of the antibodies is effected by condensing at least one aldehyde group in an oxidized carbohydrate region and at least one epoxide function of an epoxy-group-containing matrix polymer, said condensation being conducted in the presence of a bifunctional reagent which has, on one end position of a spacer unit having at least three members, an amino group capable of condensing with the aldehyde group, and which has on the other end position a group which reacts covalently with the epoxide function.

Abstract: A compatible polymer blend consisting of:(I) 0.1-99.9% by weight of a polymerisate P1, which is formed from monomers of formula I: ##STR1## wherein R.sub.1 is hydrogen or methyl, and (II) 99.9-0.1% by weight of copolymerisate P2, which is formed from (a) 5-40% by weight of cyclohexyl methacrylate, (b) 30-70% by weight of a methacrylic ester of formula II: ##STR2## wherein R.sub.2 is methyl or ethyl, (c) 10-50% by weight of a methacrylic ester of formula III: ##STR3## wherein R.sub.3 is a hydrocarbon group having 4-18 carbon atoms, and (d) 0-10 parts by weight of a monomer M which is copolymerizable with monomers of (a)-(c), yet different from these monomers.

Abstract: A pharmaceutically efficacious pteridine compound of formula: ##STR1## wherein R.sub.1 is hydrogen, halogen, trifluoromethyl, nitro, a --(A).sub.n --OR.sub.3 group, wherein R.sub.3 is hydrogen or a C.sub.1-6 alkyl group, a --(A).sub.n --NR.sub.4 R.sub.5 group, wherein R.sub.4 and R.sub.5 independently of each other are hydrogen or a C.sub.1-6 alkyl group or R.sub.4 and R.sub.5 together with the nitrogen atom form a 5- or 6-membered ring that is substituted with a C.sub.1-4 alkyl group and wherein A is a linking group having 1 to 6 linking carbon atoms, one of which can be replaced by oxygen and wherein n is zero or one, and wherein R.sub.2 is hydrogen or, independently of R.sub.1, has the same meaning as R.sub.1, with the proviso that R.sub.1 and R.sub.2 are not simultaneously hydrogen, and the physiologically acceptable acid addition salts thereof.

Abstract: Heat exchanger or heat accumulator bodies which are simple to produce. The bodies consist of a stack of extruded hollow chamber panels with plane smooth outer walls and webs that join the outer walls in a single piece. The hollow chamber panels are joined to one another in the stack on the front side by locking connections. The locking connections can be produced with an inserted electrical band heater, by glue seams, or by undercut interlockings. The hollow chamber panels are not joined to one another in the in-between areas or are not everywhere joined in the in-between areas.

Abstract: Cupola-shaped plastic pieces with a flat, unwarped rim can be produced from an equally large blank without trimming of the rim, by heating an optionally preheated plastic sheet by radiant heat. The radiant heat acts only on the area surrounded by the rim area until the area exposed to the radiant heat has reached a temperature just below the softening temperature of the plastic. Up to this point, the rim is left without tension, or at most a low clamping pressure is applied which allows a thermal movement of the rim. Then, but before the beginning of the forming, the clamping pressure is increased so that the rim is held tight. The radiation activity continues until the area exposed to the radiant heat has exceeded the softening temperature, the radiation activity is then stopped, and the area heated to the forming temperature is formed.

Abstract: Extruded web multiple panels are produced with undulated webs by extrusion of a thermoplastic material by a device including an extruder, a slotted die connected thereto which comprises core pieces in the die slot for forming the webs, a movable mold channel placed downstream of the slotted die, and a removal device. The undulation of the webs is produced by friction forces rhythmically alternating in direction crosswise to the extrusion direction. The friction forces are allowed to act in the mold channel on the extrudate in an area where it is still above its softening temperature. The friction forces are produced either by a rhythmic crosswise movement of the entire mold channel or by movable sections of the mold channel walls of a special mold channel.