Abstract: The invention relates to an unshaped refractory compound, in particular, a casting compound, gunning compound and/or free-flowing compound, comprising a bond system which forms upon addition of water, and a dry micro-scale amorphous SiO2- binder as the sole binder, which is mixed in a proportion of ?1% by weight of the total mass with the solid components to be bonded and forms the bond system after additional of 1-30% by weight of water. The invention further relates to a method for producing refractory compounds and a use of microcrystalline amorphous silicon dioxide in the production of refractory compounds.

Abstract: The invention relates to a refractory dry vibratable mix which sets at room temperature when water is added, for use in metallurgical vessels and comprising a refractory main component, a binder and a retarder.

Abstract: The present invention relates to a process for purifying a reaction output which comprises 3-aminopropanol and is obtained in the reaction of ethylene cyanohydrin with hydrogen in the presence of ammonia, which comprises distilling the reaction output comprising 3-aminopropanol in two or more stages, the ammonia content of the reaction output comprising 3-aminopropanol before introduction into the first distillation stage being 1% by weight or less and the temperature in the distillation stages being not more than 135° C. The invention further relates to a process for preparing 3-aminopropanol by reacting ethylene cyanohydrin with hydrogen in the presence of ammonia, which comprises performing the purification of the reaction output comprising 3-aminopropanol in accordance with the invention.

Abstract: Described is a backmolded plastic molding comprising a polymer backmolding film backmolded by injection molding or casting with a fiber reinforced plastic having a fiber content of from 5 to 30%, the film having a thickness of from 0.5 to 1.0 mm and the backmolding material having a thickness of from 1.5 to 4.5 mm.

Abstract: The thermoplastic molding composition comprises components A, B, C and D, and also, where appropriate, E, F, G and H, the entirety of which gives 100% by weight:

Abstract: A process for the preparation of fiber-reinforced moldings for motor vehicles wherein the molding comprises a) from 1 to 96.86% by weight of at least one polycondensate, b) from 1 to 12% by weight of at least one particulate graft copolymer whose soft phase has a glass transition temperature below 0° C. and whose median particle size is from 50 to 1000 nm, c) from 1 to 12% by weight of at least one copolymer made from the following monomers, c1) from 50 to 90% by weight of at least one vinylaromatic monomer, and c2) from 10 to 50% by weight of acrylonitrile and/or methacrylonitrile, based in each case on component c, d) from 0 to 20% by weight of e) from 0.01 to 15% by weight of a polycarbonate, f) from 0.01 to 2% by weight of a carbon black, g) from 0 to 12% by weight of a polymer other than component B, h) from 0 to 20% by weight of a polyester other than component A, i) from 0.

Abstract: A thermoplastic molding composition comprises, based on the total of components A to C and, if desired, D and E, which in total give 100% by weight, a) as component A, from 10 to 98% by weight of at least one aromatic polyester, b) as component B, from 1 to 50% by weight of at least one particulate graft copolymer whose soft phase has a glass transition temperature below 0° C.

Abstract: A) at least one polycarbonate, B) at least one graft polymer based on an elastomer having a glass transition point below 10° C., C) at least one copolymer containing vinylaromatic monomers, D) at least one filler, E) at least one low molecular weight halogen-free acid and, if desired, additionally F) at least one polyalkyl acrylate and G) at least one flame retardant and H) at least one additive, and which are characterized by the fact that they contain I) at least one aromatic or partially aromatic polyester or a mixture thereof. Shaped articles, films or fibers, particularly external autobody parts, made of said molding compositions.

Abstract: In an operation microscope (1) with an integrated navigation system (3), the control of the navigation system (3) takes place by means of an operating unit (5, 7, 9) that can be operated directly from the operation microscope (1) and which acts on a navigation system control menu (11) that is reflected into the visual field of the operation microscope (1).

Abstract: Flameproofed thermoplastic molding materials containA) a thermoplastic polyester,B) decabromodiphenylethane,C) a metal oxide or metal sulfide or metal borate or a mixture thereof,D) an ester of at least one alcohol having at least 3 OH groups and one or more aliphatic mono- or dichaboxylic acids of 5 to 34 carbon atoms and optionally,E) by weight of conventional additives and processing assistants.

Abstract: Thermoplastic molding materials based on a mixture of polybutylene terephthalate and polyethylene terephthalate (a.sub.1), graft polymers having acrylate rubbers as the grafting base (a.sub.2), copolymers of vinylaromatic monomers and acrylonitrile or methacrylonitrile (a.sub.3) and glass fibers (B) have a balanced property spectrum.

Abstract: Thermoplastic molding compositions based on thermoplastic polyesters (a.sub.1), graft polymers incorporating acrylate rubbers as grafting base (a.sub.2) and a two-shell graft sheath, copolymers of aromatic vinyl monomers and acrylonitrile or methacrylonitrile (a.sub.3) and glass fibers (B) have a balanced range of properties.

Abstract: The flameproofing agent content of molding compositions containing polyesters (a.sub.1), acrylate graft polymers (a.sub.2), styrene/acrylonitrile copolymers (a.sub.3) and glass fibers can be reduced without affecting the flame resistance by adding finely divided PTFE.

Abstract: Thermoplastic molding composition based on thermoplastic polyesters (a.sub.1), graft polymers incorporating acrylate rubbers as grafting base (a.sub.2), copolymers of aromatic vinyl monomers and acrylonitrile or methacrylonitrile (a.sub.3) and glass fibers (B) have particularly good mechanical properties if the (meth)acrylonitrile content in component (a.sub.3), based on the total weight of (a.sub.3), is less than the (meth)acrylonitrile content of component (a.sub.22).

Abstract: Thermoplastic molding compositions based on thermoplastic polyesters (a.sub.1), graft polymers incorporating acrylate rubbers as grafting bases (a.sub.2), copolymers of aromatic vinyl monomers and acrylonitrile or methacrylonitrile (a.sub.3) which contain a polymeric component (B) having carboxyl, carboxyl derivative, hydroxyl or epoxy groups or, alternatively, where graft polymers (a.sub.2) or copolymers (a.sub.3) carry such groups have a balanced range of properties.

Abstract: Thermoplastic molding materials contain, as essential components,(A) from 2 to 97.9% by weight of a nylon,(B) from 2 to 97.9% by weight of a polyaryl ether sulfone(C) from 0.1 to 30% by weight of a polymeric component having hydroxyl groupsand in addition(D) from 0 to 50% by weight of a rubber impact modifier and(E) from 0 to 60% by weight of reinforcing fillers.

Abstract: Thermoplastic molding materials contain, as essential components,(A) from 10 to 89.99% by weight of a polyester,(B) from 10 to 89.99% by weight of a polycarbonate and(C.sub.1) from 0.01 to 1% by weight of a low molecular weight organic compound of not more than 70 carbon atoms which contains (--SO.sub.3).sub.m Q groups where Q is hydrogen, NH.sub.4 or an alkali or alkaline earth metal and m is an integer equal to the valency of Q, and/or(C.sub.2) from 0.01 to 30% by weight of a polymer containing sulfo groups and having a weight average molecular weight of not less than 1000,and, as a further component,(D) from 0 to 30% by weight of a rubber impact modifier.

Abstract: Thermoplastic molding materials based on(A) polycarbonates and(B) polyesters containing from 1 to 30% by weight, based on (A)+(B)+(C),(C) of a graft copolymer based on(C.sub.1) from 60 to 99% by weight of an elastomeric component based on acrylic acid esters, methacrylic acid esters and/or conjugated dienes as well as, if desired, further comonomers, as graft base and(C.sub.2) from 1 to 40% by weight of an expoxy-containing monomer as applied graft.

Abstract: Thermoplastic molding materials contain, as essential components,(A) from 10 to 89% by weight of a blend of(A.sub.1) from 20 to 98% by weight, based on (A.sub.1)+(A.sub.2), of a polyester of an aromatic dicarboxylic acid and an aliphatic dihydroxy compound and(A.sub.2) from 2 to 80% by weight, based on (A.sub.1)+(A.sub.2), of a polyester of an aromatic dicarboxylic acid and an aromatic dihydroxy compound of the formula I ##STR1## or its C.sub.1 -C.sub.6 -alkyl or halogen derivative substituted in the nucleus, where Z is an alkylene or cycloalkylene group of not more than 8 carbon atoms, an arylene group of not more than 12 carbon atoms, --O--, --S--, ##STR2## or a chemical bond and m is 0 or 1, (B) from 10 to 89% by weight of a polycarbonate and(C) from 1 to 30% by weight of a rubber toughener having a glass transition temperature of less than -30.degree. C.

Abstract: Impact-resistant thermoplastic polyester molding materials are prepared by thoroughly mixingA. from 52 to 99 parts by weight of a melt of one or more polyalkylene terephthalates withB. from 1 to 48 parts by weight of one or more elastomeric graft polymers prepared by emulsion polymerization and composed of1. from 70 to 90% by weight of a grafting base consisting of elastomeric polymers having a gel content of not less than 80% and a glass transition temperature Tg of less than -20.degree. C. and2. from 10 to 30% by weight of a grafted shell consisting of one or more polymers having a glass transition temperature Tg greater than 40.degree. C.,in the form of an aqueous dispersion in which not less than 80% of the particles of graft polymer B have a size of from 0.05 to 0.15 .mu.m, with simultaneous removal of the water which vaporizes.