Abstract: An electronic time base error correction technique in which the color video signal is recorded so that in playback in at least one channel sync information is provided along with the luminance information and the color burst information along with the chrominance information. Feedback loops are provided to derive from the sync information coarse-correction of the video signal and derive from the burst information fine-correction of the video signal. The color burst extends over the entire blanking interval.Three different approaches are specifically disclosed: in the first, coarse- and fine-correction are carried out in two tandem connected stages, respectively. In the second, coarse- and fine-correction are accomplished in the same stage by means of a bi-level phase comparator. The third approach is a modification of the second approach, in which the first and second techniques have been combined.

Abstract: Hot-melt pressure-sensitive adhesive composition based on a rubbery block copolymer of a monovinyl-aromatic compound or monovinylidene-aromatic compound and butadiene.The composition contains a selectively hydrogenated radial block copolymer with terminal polymer blocks of the monovinyl- or mono-vinylidene-aromatic compound and, in the middle position, butadiene-based polymer blocks which had a 1,2-vinyl content of from 30 to 70 per cent by weight prior to hydrogenation. The compositions may be used, in particular, for the production of self-adhesive materials.

Abstract: New substituted 1-alkenynyl-cyclohexanols and 1-alkenynyl-cyclohexenes. The 1-alkenynyl-cyclohexanols are obtained by reacting the corresponding cyclohexanone witn an enyne in the presence of a strongly basic condensing agent in an inert solvent, or with an alkali metal salt of an enyne in an inert solvent. The 1-alkenynyl-cyclohexenes are obtained by dehydrating the 1-alkenynyl-cyclohexanols or 1-cycloalkanolyl-alkynols. The new compounds are themselves interesting scents, but can also be used as starting materials for further interesting scents.

Abstract: A process for the manufacture of ethylene polymers by homopolymerization and copolymerization of ethylene at pressures of from 500 to 5,000 bars and at from 50.degree. to 450.degree. C, with subsequent isolation of the polymers in high pressure product isolation zones and low pressure product isolation zones. The various parallel product isolation zones are at different temperatures, and the mean product residence times in the zones may be identical or different. Very different products, in amounts which can be chosen according to requirements, and with mutually independent polymer properties, can be obtained using only one high pressure polymerization system.

Abstract: Pressure-sensitive adhesives are manufactured by reacting a mixture ofA from 10 to 90% by weight of a polyol having a molecular weight of from 300 to 8,000 and a hydroxyl number of from 20 to 85 andB from 5 to 60% by weight of an amorphous thermoplastic tackifier resin having a softening point of from 40.degree. to 140.degree. C and a molecular weight of from 200 to 7,500, withC from 5 to 30% by weight of a polyisocyanate masked with CH-acidic compounds,The percentages by weight being based on the total weight of components (a), (b) and (c).

Abstract: A process for the manufacture of copolymers of ethylene with n-butyl acrylate in a polymerization zone at pressures above 800 atmospheres and at from 150.degree. to 350.degree. C, wherein the reaction mixture obtained is transferred, via a cooling zone which is at a pressure below 500 atmospheres and at from 150.degree. to 250.degree. C, into the high pressure product isolation zone, the mean residence time of the reaction mixture in the two zones being from 2 to 10 minutes. A copolymer which gives good films is obtained.

Abstract: A surface-coating binder which is substantially free from epoxide groups is obtained by reacting Mannich bases, obtained from condensed phenols, secondary amines which contain at least one hydroxyalkyl group, and formaldehyde, with epoxy resins having an epoxide value of from 0.15 to 0.6, which carry blocked isocyanate groups. In the protonized form, the binders may be used for the cationic electrocoating of metal articles.

Abstract: Particulate expandable styrene polymers which contain from 0.0001 to 0.2% by weight, based on the styrene polymer, of an inhomogeneously distributed nucleating agent for expandable polystyrene, the nucleating agent being present only in a peripheral zone of the particles while the interior of the particles is free from nucleating agent. Nucleating agents which may be used are organic compounds having at least three bromine atoms, bonded to aliphatic or cycloaliphatic structures, in the molecule, or bromine compounds which are polymerizable, or are copolymerizable with styrene.

Abstract: Concentrated, storage-stable solutions of alkylbenzenesulfonates, with alkyl chains of 8 to 18 carbon atoms, of basic dyes, in normally liquid alcohols, glycols and glycol ethers. The solutions are particularly suitable for producing waterfast prints, colorations, script and markings.

Abstract: Copolymers of crotonic acid are purified, to remove monomeric crotonic acid, by extracting the copolymers with water at from 50.degree. to 120.degree. C and stirring the system, the flow energy of the water and the energy of stirring being chosen so that the polymer particles just remain suspended.

Abstract: Bicyclo[2,2,2]oct-7-ene-2,3,5,6-tetracarboxylic acid dianhydride is manufactured by reacting 3,5-cyclohexadiene-1,2-trans-dicarboxylic acid with maleic acid in the presence of anhydrides of low molecular weight alkanecarboxylic acids at from 50.degree. to 150.degree. C. The 3,5-cyclohexadiene-1,2-trans-dicarboxylic acid, in the anhydride of the low molecular weight alkanecarboxylic acid, and in the presence of water-soluble salts of the alkali metals, of the alkaline earth metals or of zinc, manganese or iron, in which salts the anion contains oxygen, is first heated to the reaction temperature and the maleic anhydride is then added.

Abstract: Branched block copolymers of from 60 to 95 percent by weight of a monovinyl-aromatic compound and from 40 to 5 percent by weight of a conjugated diene. The copolymers have a structure of the general formula(A.sup.1 -B.fwdarw.A.sup.2).sub.n --X--(A.sup.2 .rarw.B).sub.mwhere the A's are non-elastomeric polymer segments based on the monovinyl-aromatic compound, the B's are elastomeric polymer segments based on the conjugated diene, X is the radical of an at least trifunctional coupling agent and n and m are numbers. The copolymers may be used for the manufacture of highly transparent impact-resistant shaped articles, especially packaging materials.

Abstract: A process for the manufacture of copolymers by copolymerizing acrylic acid or methacrylic acid with esters of acrylic acid and methacrylic acid in the presence of polymerization initiators, in which methyl methacrylate, acrylic acid and/or methacrylic acid and a higher alkyl acrylate are copolymerized.

Abstract: A new compound, 1,3,5-tris-(2-chloroformyl-oxyethyl)-isocyanurate.

Abstract: In order to reduce corrosion of the inside walls of a reactor made of iron or an iron alloy and used for the synthesis of chromium dioxide by hydrothermal conversion of chromium(VI) oxide with chromium oxides of lower valency, lead or bismuth is added at those points of the reactor at which an aqueous phase occurs during conversion and which do not contact the chromium oxides to be converted. The lead or bismuth may be used in metallic form or in the form of their oxides, hydroxides or salts.

Abstract: New pyridylphosphoric acid derivatives, a process for the manufacture thereof by reaction of pyridinecarboxylic acid esters with salts of phosphoric acid derivatives, and pesticides containing these new pyridylphosphoric acid derivatives as active ingredients. The compounds of the invention have the formula ##STR1## where X denotes hydrogen or halogen, Y denotes oxygen or sulfur, R.sup.1 denotes linear or branched alkyl, alkenyl or alkynyl of a maximum of 6 carbons atoms, or unsubstituted or halogen-substituted phenyl or benzyl, R.sup.2 denotes linear or branched alkyl, unsubstituted phenyl, substituted phenyl, alkyloxy or alkylthio of a maximum of 6 carbon atoms, alkenyloxy or alkenylthio of a maximum of 6 carbon atoms, alkynyloxy or alkynylthio of a maximum of 6 carbon atoms, amino or alkylamino with from 1 to 4 carbon atoms in the alkyl moiety, or dialkylamino with from 1 to 4 carbons atoms per alkyl moiety, and R.sup.3 denotes alkyl of from 1 to 4 carbon atoms.

Abstract: 5-Cyanopyrid-6-ones are manufactured by reacting haloacetic acid esters with nitrogen compounds, then reacting the mixture with alkali metal cyanides, and finally reacting it with dicarbonyl compounds. The products are starting materials for the manufacture of dyes, assistants, pharmaceuticals, vitamin B 6, crop protection agents and aminoacids.

Abstract: Copolymers which have a molecular weight of from 600 to 24,500, and which contain from 0.1 to 60 per cent by weight of succinic acid hydrazide units and from 99.9 to 40% by weight of one or more ethylenically unsaturated monomers which are copolymerizable with maleic anhydride, are used as coating agents and binders.

Abstract: The invention relates to a magnetic disc for track adjustment and amplitude control having at least one control track with magnetic control signals, this track being arranged in the central region of the recording area, and the control signals consisting of two different signals. The invention also relates to the geometric arrangement of the control signals in the track, their number, their amplitude, their frequency and their duration.

Abstract: 2,3,6- AND PREFERABLY ALSO 4-SUBSTITUTED PYRIDINE DERIVATIVES BEARING THE RADICAL OF AMMONIA OR A PRIMARY AMINE IN THE 2- AND 6-POSITIONS. The compounds are eminently suitable as coupling components for the production of azo dyes, the coupling taking place in the 5-position.