Polystyrene and copolymers thereof can be reinforced by glass fibers having a coating of silane coupling agent and a thermosetting polymer such as epoxy, phenolic, polyester, polyacrylate and melamine, to provide superior thermoplastic injection molding compositions.

A polyglycerol partial fatty acid ester emulsifier polyglycerol which is predominantly mono- and/or diesterified with saturated fatty acid moieties and optionally monomeric glycerol which is predominantly mono- and/or diesterified with saturated fatty acid moieties, in which the fatty acid moieties are selected so that the average number of carbon atoms in the acid moieties is in the range between 13.0 and 16.5 is prepared by reacting a polyglycerol, optionally containing monomeric glycerol, wit...

A novel compound names "cornexistin" has the formula (I): ##STR1## and it and the corresponding ring-opened diacid and salts thereof have herbicidal and growth regulating effects. Cornexistin can be prepared by cultivation of a microorganism of the genus Paecilomyces, e.g. Paecilomyces variotii Bainier SANK 21086.

Pyrazole and its derivatives are prepared by dehydrogenating 2-pyrazoline or its derivatives by a process in which the reaction is carried out using sulfuric acid in the presence of iodine or of an iodine compound at from 50.degree. to 250.degree. C.

A chair with its backrest adjustable in its angle comprising a steering rod to keep the backrest upright or tilted in a certain pre-set angle and a control rod to push down a press button of an air pressure cylinder which functions to raise up or lower down the seat of the chair when the control rod is rotated.

The present invention is directed to a diisocyanate which corresponds to the formula ##STR1## The present invention is also directed to the preparation of this diisocyanate and to its use for the production of polyisocyanate polyaddition products.

Building materials such as concrete can be colored by a black pigment which consists essentially of manganese ferrite of the composition Mn.sub.1+x Fe.sub.2-x O.sub.4 with a spinel structure wherein x has a numerical value from -0.1 to 0.1 and the pigment is prepared by a process wherein a) soluble manganese (II) salts and soluble iron (II) salts are precipitated from a solution of metal salts by reaction with alkaline precipitating agents in an approximately stoichiometric ratio, b) the precipi...

The invention relates to readily dispersible pigment preparations having good tinctorial strength based on an arylpararosanilinesulfonic acid pigment of the formula ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 independently of one another are hydrogen, chlorine or bromine or an alkyl or alkoxy group, each having 1 to 3 carbon atoms, and at least one liquid alcohol having a chain length of C.sub.8 to C.sub.20, preferably C.sub.10 -C.sub.15, which has been modified with 2 to 8 mol, preferably 3-...

Composite membrane, process for its production and its use A composite membrane for gas separation having a three-layer structure, constructed from A) a supporting membrane layer made of porous polymer, B) a nonporous, gas-permeable intermediate layer, C) a permselective layer of regularly arranged organic molecules having a layer thickness of 3 to 100 nm, the layers (A) and (C) enclosing the intermediate layer (B), wherein the permselective layer (C) is constructed from regularly arranged amphi...

Pyrroquinoline quinone-dependent glycerol dehydrogenase is provided which requires no surfactant for its solubilization and stabilization. The glycerol dehydrogenase has the following properties: (a) catalyzing the following reaction: glycerol+electron acceptor.dbd.glyceraldehyde+reduced electron acceptor, (b) optimum pH: pH 8-9, (c) pH stability: stable at pH 7-11, (d) optimum temperature: 20.degree.-25.degree. C., (e) thermal stability: stable at a temperature of 30.degree. C. or less for 10 m...