Abstract: Heat-curable, aqueous synthetic resin mixtures for coating woodworking materials, based on etherified melamine/formaldehyde condensates and aqueous synthetic resin dispersions, a process for the preparation of these mixtures and their use for coating woodworking materials.

Abstract: Moresque or berber continuous filament yarn is prepared by supplying a first group of continuous filaments to a first entangling zone where harsh nodes are created so that the first group has a yarn harshness of at least about 200. One or more other groups of continuous filaments, which are differentially precolored or dyeable with respect to the first group, are joined to the first group and interlaced sufficiently to cohere all groups of continuous filaments without blending with the tightly interlaced first group. The finished yarn has node harshness less than 100.

Abstract: The present invention relates to an improved process for producing, by means of a portable foaming apparatus having a static mixer, a polyurethane foam by reacting a reaction mixture comprised of a polyol, an organic isocyanate, a foaming/frothing agent, and a reaction catalyst, the improvement comprising employing monochlorodifluoromethane as the sole blowing/frothing agent in said reaction in order to produce a CFC-free essentially closed-cell rigid or semi-rigid polyurethane foam. Also claimed is the foam produced by the above process.

Abstract: The invention deals with a process for the preparation of uretdione group containing polyisocyanates comprising reacting monomeric aromatic diisocyanates in the presence of a catalyst whereby imidazoles or benzimidazoles having general structure formulas I or II are used as catalysts ##STR1## or their mixtures are used whereby R.sup.1 through R.sup.7 have the meaning cited in claim 1.

Abstract: The present invention relates to coating agents based on hydroxyl-containing binders and isocyanate-containing crosslinking agents, in which coating agentsI.) the binder comprisesA1) 5 to 80% by weight of at least one polyester or one alkyd resin having an OH number from 0 to 200 mg of KOH/g and an acid number from 0 to 200 mg of KOH/g,A2) 95 to 20% by weight of at least one polyacrylate having an OH number from 30 to 250 mg of KOH/g and an acid number from 0 to 50 mg of KOH/g,the sum of the weight proportions of components (A1) and (A2) being in each case 100% by weight, andII.) the binder is obtainable from1.) at least one polycondensation resin whose acid component comprises 5 to 100 mol % of cycloaliphatic polycarboxylic acids and/or esterifiable derivatives thereof,2.) at least one polyacrylate, at least some of which has been prepared in the presence of the polycondensation resin obtained in the first process step and3.

Abstract: A process for coating drug forms by application of an aqueous dispersion which contains as binder a redispersed latex of an emulsion polymer onto the drug form and evaporating the water at a temperature at which the latex particles form a film, comprises employing a polymer dispersion which has been prepared by emulsion polymerization of one part by weight of at least one ethylenically unsaturated polymerizable monomer, by means of initiators which provide free radicals, in the presence of from 0.1 to 2 parts by weight of saccharified starch, and from 0 to 5% by weight, based on the monomer or monomers, of a surfactant, with or without further conventional additives, drying to a powder and redispersing in water.

Abstract: Compounds of the general formula I ##STR1## and drugs and cosmetics prepared therefrom are described.

Abstract: Antifoams for the paper industry are based on oil-in-water emulsions in which the oil phase accounts for from 5 to 50% by weight of the emulsion and contains(a) an alcohol of not less than 12 carbon atoms, fatty esters of alcohols of not less than 22 carbon atoms and C.sub.1 -C.sub.36 -carboxylic acids, distillation residues which are obtainable in the preparation of alcohols having a relatively large number of carbon atoms by the oxo synthesis or by the Ziegler method and which may be alkoxylated, a mixture of the stated compounds and/or(b) a fatty ester of a C.sub.12 -C.sub.22 -carboxylic acid with a monohydric to trihydric C.sub.1 -C.sub.18 -alcohol and, if required,(c) a hydrocarbon having a boiling point above 200.degree. C.

Abstract: Molding materials are composed ofA) from 40 to 100% by weight of a copolyamide based ona.sub.1) from 1 to 20 mol%, based on the copoly- amide, of at least one monomer that contains at least one olefinic double bond (monomers a.sub.1) from the group of the.alpha..sub.1) olefinically unsaturated lactams,.alpha..sub.2) olefinically unsaturated aminocarboxylic acids,.alpha..sub.3) olefinically unsaturated dicarboxylic acids,.alpha..sub.4) olefinically unsaturated diamines, anda2) from 80 to 99 mol%, based on the copolyamide, of at least one monomer that contains no olefinic double bonds (monomers a2) from the group of the.beta..sub.1) lactams.beta..sub.2) aminocarboxylic acids,.beta..sub.3) dicarboxylic acids,.beta..sub.4) diamines, andB) from 0 to 35% by weight of an impact modifying rubber,C) from 0 to 50% by weight of a filler and/or reinforcing agent,D) from 0 to 20% by weight of a flame retardant, andE) from 0 to 10% by weight of further additives and processing aids.

Abstract: Piperazine-2,3-diones of the formula I ##STR1## where R.sup.1 and R.sup.2 are identical or different and each is alkyl, alkenyl or alkynyl, where these groups may carry from one to five halogen atoms;monocyclic or polycyclic cycloalkyl, cycloalkenyl, cycloalkylmethyl or cycloalkenylmethyl, where the rings may carry from one to three alkyl groups or a phenyl ring; orphenyl, phenylalkyl or phenylalkenyl, where the aromatic radicals may carry from one to five halogen atoms and/or from one to three of the following groups: nitro, alkyl, haloalkyl, alkoxy, haloalkoxy, alkylthio or haloalkylthio,methods for their manufacture, agents containing them and the use thereof.

Abstract: .alpha.-Arylacrylates substituted by a heterocyclic radical and of the general formula I ##STR1## where R.sup.1 is alkoxy or alkylthio, R.sup.2 is alkyl, Het is pyridyl, pyridone, quinolyl, pyrimidinyl, pyrimidinone, the heterocyclic ring system being unsubstituted or substituted, A is carbonyloxy, oxygen or sulfur, and n is 0 or 1, and their plant-tolerated acid addition salts and metal complexes, and the N-oxides of the heterocyclic compounds, and fungicides containing these compounds.

Abstract: A coating composition is disclosed comprising:(a) an aqueous medium,(b) an water-dispersible polyurethane resin that is the reaction product of a mixture comprising:(1) a hydroxy-functional polyester component that is the reaction product of a mixture comprising a carboxylic acid component comprising at least two carboxylic acid functional groups, a long-chain aliphatic polyol having 18 to 60 carbon atoms, and a short-chain polyol having 12 or fewer carbon atoms,(2) a multifunctional compound having at least one active hydrogen group and at least one water-stabilizing group,(3) an active hydrogen-containing capping or chain extending agent, and(4) a polyisocyanate, and(c) an aminoplast crosslinking agent.

Abstract: Glycol aldehyde and lactic acid derivatives and their sulfur analogs of the formula I ##STR1## where R.sup.1 to R.sup.3 have the meanings given in the specification, X is oxygen, sulfur or a single bond, and Y is a C.sub.2 -C.sub.4 -alkylene or C.sub.2 -C.sub.4 -alkenylene chain where in each case a methylene group may be substituted by an oxo group (.dbd.O), environmentally compatible salts of the compounds I, methods of preparing the compounds I, and their use as herbicides.

Abstract: A heat-curable molding material consists of an unsaturated polyester, monomers, a propylene polymer, free radical initiators and conventional additives and assistants, the propylene polymer being dispersed in the form of solid, round particles having a smooth surface and a mean diameter of from 1 to 200 .mu.m in the polyester resin.

Abstract: A method of stabilizing N-vinylformamide, which may contain customary polymerization inhibitors, against polymerization during storage or transport, comprises adding to the N-vinylformamide monomers of the general formula ##STR1## where R+H, CH.sub.3 ##STR2## R.sup.2 +C.sub.1 -C.sub.4 -alkyl, as stabilizer in amounts of from 1 to 99 .degree.6 by weight, based on the mixture.

Abstract: In a process for the recovery of a polymerizable useful fraction, consisting of styrene, methylstyrenes, vinyltoluenes, indene, methylindenes and fractions whose boiling points are between styrene and methylindenes, from the crack gases of a steam cracker, the sidestream of the crack gas column is divided, by means of a distillation unit, into the useful fraction and into fractions which are recycled to the crack gas column.

Abstract: Phthalaldehyde tetraalkyl acetals are prepared by electrochemical oxidation of substituted xylenes and used as stable compounds for storing phthalaldehydes.

Abstract: The invention relates to a cathodic electro-dipping process wherein the electro-dipping primer employed contains a crosslinking agent which can be obtained by(I) reacting, in a first stage,(a) diphenylmethane diisocyanate and(b) a monoalcohol or a mixture of monoalcohols to give an intermediate product (A) containing isocyanate groups, and(II) reacting this intermediate product (A) in a second stage with(c) a polyol or a mixture of polyols to give an intermediate product (B) containing hydroxyl groups which(III) is reacted in a third stage either with(d) a cycloaliphatic, aliphatic or araliphatic polyisocyanate or a mixture of such polyisocyanates and(e) a monofunctional masking agent or a mixture of such masking agents or with(f) a partially-masked polyisocyanate prepared from (d) and (e)to give a crosslinking agent which is free from isocyanate groups.

Abstract: An aqueous polymer dispersion gives a film having high resilience in conjunction with reduced surface tack and good aging resistance under the action of light, heat and oxygen and is used for coating leather.

Abstract: A process for regenerating deactivated metal oxide catalysts comprising at least one of the elements antimony, iron, bismuth, molybdenum, vanadium, tungsten and/or uranium and a peptizable carrier, comprises the steps of:a) grinding the metal oxide catalyst in the presence of water to a particle size of from 10 nm to 10 .mu.m,b) heating the aqueous suspension of the metal oxide catalyst of stage a) to 30-100.degree. C. and adding an acid which peptizes the carrier,c) spray drying the acidic suspension of the metal oxide catalyst,d) heating the fluidizable metal oxide catalyst particles of stage c) to 500.degree.-850.degree. C.