Abstract: A novel, optically transparent, isotropic molding for optical purposes which is free of orientation birefringence consists of a mixture of polyphenylene ethers, vinylaromatic polymers and additives. The novel molding contains traces of novel diphenoquinone and/or diphenohydroquinone derivatives as additives and may also contain novel ammonium salts of sulfuric acid half esters of diphenohydroquinones as further additives. The novel molding has a yellowness index (YI) of from 40 to 90. It can be produced in a simple manner by injection molding processes. The novel molding in the form of a circular disk having a central hole is very useful as a dimensionally stable substrate of audio compact disks (CD), audiovisual compact disks (CDV), laser-optical computer disks and magneto-optical computer disks, and data media of this type which contain these novel dimensionally stable substrates have particularly advantageous performance characteristics.

Abstract: An optical recording medium comprises a support material and a light-absorbing layer consisting essentially of a soluble mixture of a thermoplastic binder and at least one dye, wherein the thermoplastic binder is a phenol-aldehyde resin having an average molecular weight of greater than 300 which is soluble in an alcohol having a boiling point of less than 200.degree. C.

Abstract: A process for the preparation of 1-monochloroethylcarbamyl chloride by chlorinating ethyl isocyanate or ethylcarbamyl chloride. The 1-chloroethylcarbamyl chloride obtainable according to the invention is an important starting material for the preparation of 1-chloroethyl isocyanate and vinyl isocyanate and accordingly a valuable starting material for the preparation of pest control agents, dyes, drugs, textile waterproofing agents, detergents, plastics, bleaching agents and adhesives, since the said isocyanates contain, in addition to a reactive isocyanate group, an activated double bond or an activated .alpha.-carbon atom.

Abstract: Surface-coating binders based on a copolymer which contains tertiary amino groups, blocked isocyanate groups, hydroxyl groups and ether groups and which, due to partial or complete salification with an acid, is water-soluble or water-dispersible.This copolymer contains, as copolymerized units, one or more olefinically unsaturated compounds possessing a tertiary amino group, an N-(1-alkenyl) isocyanate blocked with a CH--, OH-- or NH-acidic blocking agent, an adduct of an epoxy resin based on bisphenol A and epichlorohydrin, and having a molecular weight of from 380 to 3,500, with an olefinically unsaturated alcohol of 3 to 20 carbon atoms, and one or more other copolymerizable olefinically unsaturated compounds, and has a mean molecular weight of from 1,000 to 20,000.The novel surface-coating binder is used for the cathodic electrocoating of metallic articles.

Abstract: Compounds of the formula ##STR1## where Ar, R.sup.1, R.sup.2 and X have the meanings given in the claims, their preparation and their use as plant growth regulators.

Abstract: Dibenzofuran derivatives of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3, X, A, Y, m, n, p and q have the meanings given in the description, and their use for controlling fungi.

Abstract: Novel 1,3-dioxan-5-yl-alkenyltriazoles of the formula ##STR1## where R.sup.1 and R.sup.2 are identical or different and each is hydrogen or alkyl of 1 to 5 carbon atoms, Ar is furanyl, thienyl, biphenylyl or naphthyl, or is phenyl which is unsubstituted or substituted by alkyl, alkoxy or alkenyl, each of 1 to 5 carbon atoms, or by fluorine, chlorine, bromine, iodine, nitro, trifluoromethyl or phenoxy, and X is C.dbd.O, --CH(OH)-- or --CH(O--COR.sup.3)--, where R.sup.3 is unsubstituted or halogen- or alkoxy-substituted alkyl of 1 to 5 carbon atoms or alkenyl of 2 to 5 carbon atoms or aryl, their salts and metal complexes, and their preparation. The novel compounds are plant growth regulators.

Abstract: Halogenated tertiary alkyl isocyanates and a process for their preparation by reacting a tertiary alkyl isocyanate with halogen, sulfuryl chloride and/or sulfuryl bromide.The halogenated tertiary alkyl isocyanates prepared by the process of the invention are valuable starting materials for the preparation of pest control agents, fatliquoring agents, drugs, flameproofing agents, lubricating oils, synthetic resins and slip agents.

Abstract: Surface-coating binders based on a copolymer which contains carboxyl groups, blocked isocyanate groups, hydroxyl groups and ether groups, and which, due to partial or complete salification with ammonia or with an organic base, is water-soluble or water-dispersible.This copolymer contains, as copolymerized units, one or more .alpha.,.beta.-olefinically unsaturated carboxylic acids of 3 to 5 carbon atoms or one or more half-esters of an .alpha.,.beta.-olefinically unsaturated dicarboxylic acid of 3 to 5 carbon atoms, an N-(1-alkenyl) isocyanate blocked with a CH--, OH-- or NH-acidic blocking agent, an adduct of an epoxy resin, based on bisphenol A and epichlorohydrin and having a molecular weight of from 380 to 3,500, with an olefinically unsaturated alcohol of 3 to 20 carbon atoms, and one or more other copolymerizable olefinically unsaturated compounds, and has a mean molecular weight of from 1,000 to 20,000 and an acid number of from 35 to 150 mg of KOH/g.

Abstract: 1-Monohalogenated isocyanates, and a process for the preparation of mixtures of 1-monohalogenated isocyanates and 1,2-unsaturated isocyanates by reacting 1-monohalogenated carbamic acid halides or isocyanates with a halogen-free isocyanate or diisocyanate or by reacting 1,2-unsaturated isocyanates with a carbamic acid halide or a bis-carbamic acid halide.The 1,2-unsaturated isocyanates and 1-monohalogenated isocyanates prepared according to the invention are valuable starting materials for the preparation of pest control agents, dyes, drugs, water-repellent textile finishes, detergents, plastics, bleaches and adhesives.

Abstract: Novel .alpha.-haloalkylcarbamic acid halides, and a process for the preparation of .alpha.-haloalkylcarbamic acid halides by reacting alkenyl isocyanates with hydrogen halide. The .alpha.-haloalkylcarbamic acid halides obtained by the process of the invention are valuable starting materials for the preparation of surface-coating raw materials, textile coating agents, dyes, drugs and crop protection agents.

Abstract: 1-Haloalkyl isocyanates and 1-alkenyl isocyanates are prepared by reacting 1-haloalkylcarbamic acid halides or 1-haloalkyl isocyanates with .alpha.-pinene.The 1-alkenyl isocyanates and 1-haloalkyl isocyanates obtained according to the invention are valuable starting materials for the preparation of pest control agents, dyes, drugs, water-repellent textile finishes, detergents, plastics, bleaches and adhesives.

Abstract: .alpha.,.beta.-Dihaloalkyl isocyanates and a process for the preparation of such compounds by reacting .alpha.,.beta.-unsaturated alkyl isocyanates with halogen in the presence of an organic solvent which is inert under the reaction conditions, at from -35.degree. to +90.degree. C. The .alpha.,.beta.-dihaloalkyl isocyanates thus obtainable correspond to the formula ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are identical or different and each is hydrogen, a saturated aliphatic radical of 1 to 10 carbon atoms, a cycloaliphatic radical of 3 to 12 carbon atoms, an araliphatic radical of 7 to 11 carbon atoms or an aromatic radical of 6 to 10 carbon atoms, or R.sup.1 and R.sup.2 together with the carbon atom on which they are present as substituents are cycloalkyl of 3 to 7 ring members, and X is halogen. The compounds are valuable intermediates for the preparation of dyes, surface-coating intermediates, crop protection agents and drugs.