Abstract: The present invention relates to a powder coating, in particular for internal coating of packaging containers, which is characterized in that it1.) comprises at least one epoxy resin having an epoxide equivalent weight of from 300 to 5500 and at least one hardener having more than one phenolic hydroxyl group per molecule and a hydroxyl equivalent weight, based on the phenolic OH groups, of from 100 to 500, and2.) has a particle size distribution such that at least 90 percent by weight of the powder coating particles have a particle size of between 1 and 60 .mu.m, the maximum particle size of the powder coating particles is .ltoreq.100 .mu.m, the mean particle size of the powder coating particles is between 5 and 20 .mu.m and the gradient of the particle distribution curve at the point of inflexion is .gtoreq.100.

Abstract: The invention provides polyurethane components and compositions capable of providing internal mold release properties in SRIM applications. The polyol composition of the invention has an isocyanate reactive polyol (A) having a number average molecular weight from 100 to about 10,000 and an effective amount of internal mold release composition (B) having a silicon-containing polymer (a) and an epoxidized ester (b). The invention further provides an SRIM polyurethane composition useful in the preparation of molded polyurethane articles having internal mold release properties, the composition comprising an isocyanate component (I) and the isocyanate reactive polyol composition (component (II)) disclosed above. In another aspect of the invention, the invention provides methods of using the claimed compositions as well as the rigid cellular polyurethane SRIM articles resulting from such processes.

Abstract: An improved latex composition is provided that has been found to exhibit a superior ability to form a substantially uniform polymeric film when applied to a substrate. The composition is capable of being handled and applied to a substrate in the absence of excessive foaming. The aqueous composition includes as essential components specified concentrations of a specifically-defined normally liquid predominantly hydrophobic nonionic alcohol ethoxylate surfactant, and a solely hydrophobic defoaming agent (e.g., a hydrocarbon-based mineral oil). It is possible for the composition to be applied even to a hydrophobic substrate (e.g., a polyester film substrate). Compositions of the present invention, following application to a substrate and the volatilization of the water component, form a substantially uniform polymeric film that can serve as a coating or adhesive.

Abstract: A process for the preparation of N-allyl compounds of the general formula I ##STR1## in which ##STR2## denotes a nitrogen-containing heterocyclic compound, R.sup.1, R.sup.3, and R.sup.4 independently denote hydrogen or C.sub.1 -C.sub.4 alkyl,R.sup.2 denotes hydrogen or methyl,n is equal to 1, 2, 3, or 4, andX denotes a water-solubilizing anion,wherein a compound of formula II ##STR3## is caused to react, in aqueous medium, with a compound of formula III ##STR4## in which A denotes a radical which can be eliminated as an anion. The compounds produced by the process of the invention are very well suited for use as brighteners in nickel electroplating.

Abstract: Herbicidal compositions containing at least one liquid and/or solid carrier, if desired at least one adjuvant, anda) an antagonistically active amount of 3-(2-chlorophenylmethyl)-1-(1-methyl-1-phenylethyl)urea and/or 1-(1-methyl-1-phenylethyl)-3-(4-tolyl)ureaandb) a herbicidally active amount of at least one cyclohexenone oxime ether.

Abstract: The preferred sintered parts made of oxygen-sensitive, non-reducible powders and their production by injection-molding are distinguished by the powders used being freed of their oxide layer by attritor milling in a water-free organic solvent, in the presence or absence of an additional reductant, the oxide particles being removed if necessary by filtration or screening in the presence of the organic solvent, the oxide-free powder being mixed as suspension with a polyacetal as binder under a protective gas, the organic solvent being distilled off, the mixture of powder and polyacetal being heated above the melting point of the polyacetal and being compounded to give a homogeneous composition, the granular material thus obtained being processed in an injection-molding machine made inert with argon to give shaped bodies, the shaped bodies being freed of binder under the action of oxalic acid in a closed ceramic container which nevertheless allows pressure equilibration under protective gas at atmospheric pressur

Abstract: Cyclohexenone oxime ethers I ##STR1## where n is from 0 to 5, m is from 0 to 2, R.sup.1 is C.sub.1 -C.sub.6 -alkyl, R.sup.2 is C.sub.1 -C.sub.4 -alkyl or benzyl, A is unsubstituted or substituted C.sub.1 -C.sub.6 -alkylene, unsubstituted or substituted C.sub.3 -C.sub.6 -alkenylene, unsubstituted or substituted C.sub.3 -C.sub.6 -alkynylene or an unsubstituted or substituted C.sub.3 -C.sub.6 -alkylene or C.sub.4 -C.sub.6 -alkenylene chain, where in each case a methylene group may be replaced with O, S, SO, SO.sub.2 or --N(R.sup.a)--, R.sup.a is H, C.sub.1 -C.sub.4 -alkyl, C.sub.3 -C.sub.6 -alkenyl or C.sub.3 -C.sub.6 -alkynyl, Z is phenyl, a 5-membered heteroaromatic radical or a 6-membered heteroaromatic radical having from 1 to 4 nitrogen atoms, X is NO.sub.2, CN, halogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -haloalkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkylthio, C.sub.1 -C.sub.4 -haloalkoxy, COOH, C.sub.1 -C.sub.

Abstract: A method for producing halogen-free, antimony-free and phosphorous-free polyamide fibers is described by incorporating an additive into the polyamide which comprises a vulcanizable mixture of silicones and a catalyst in a thermoplastic matrix. The fibers have improved flame retardancy and are used for the manufacture of carpets.

Abstract: Polymers I comprising from 15 to 80% by weight of monomers of the general formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each C.sub.1 -C.sub.3 -alkyl, R.sup.4 is C.sub.1 -C.sub.5 -alkyl and X is O or NH, andfrom 20 to 85 % by weight of other monomers capable of undergoing free radical copolymerizationare used as assistants in the spray drying of aqueous dispersions of polymers II which differ from the polymers I.

Abstract: The present invention is directed to a pigment dispersant composition for use with inorganic pigments in coating compositions. The dispersant composition includes a vinyl or acrylic copolymer and a transition metal or rare earth metal salt. The metal salt in combination with the copolymer is useful with inorganic pigment as it lowers the viscosity of the pigment dispersions, thus allowing a higher concentration of pigment in the dispersion and consequently providing dispersions with higher non-volatile content and higher pigment to binder ratios. The presence of the metal salts in the dispersant composition when used with surface coated metal flake pigment provides excellent corrosion reduction of the metal pigment, indicated by the reduction or elimination of hydrogen gassing by the pigment in a coating composition.

Abstract: Vinyl formate containing formic acid, acetaldehyde and water following synthesis is separated from formic acid and water in a first distillation stage and from acetaldehyde in a second stage to give pure vinyl formate.

Abstract: Substituted isoindolones I ##STR1## where R.sup.1 and R.sup.2 =H, unsubstituted or substituted alkyl, alkenyl, alkynyl, cyano, C.sub.1 -C.sub.6 -alkoxycarbonyl, formyl, C.sub.1 -C.sub.6 -alkylcarbonyl, unsubstituted or substituted phenylcarbonyl, C.sub.3 -C.sub.8 -cycloalkyl, or, if R.sup.1 =H, R.sup.2 additionally=unsubstituted or substituted phenyl, orR.sup.1 and R.sup.2, together with the carbon atom to which they are bonded, are an unsubstituted or substituted 3- to 8-membered carbo- or heterocycle;where R.sup.3 to R.sup.6 have the meanings given in the specification. The compounds are useful as herbicides and for the desiccation/defoliation of plants.

Abstract: Naphthyl ethers of the general formula I ##STR1## where the index and the substituents have the meanings defined in the specification.

Abstract: The invention relates to a process for the production of two-coat finishes, in which a pigmented basecoat is first applied, the resulting basecoat film is coated with a powder clearcoat, and basecoat and clearcoat are subsequently baked together. In accordance with the invention, the powder clearcoat employed is a powder coating which contains an epoxide group-containing polyacrylate resin as binder and a mixture of (A) a polyanhydride and (B) a carboxyl group-containing polyester resin as crosslinking agent. The polyester resin can be prepared by reacting a diol (b1), a compound (b2) which contains per molecule at least three functional groups selected from hydroxyl, primary amino, secondary amino, carboxyl and acid anhydride groups, and (b3) a dicarboxylic acid in a molar ratio of (b1): (b2): (b3)=0.0 to 3.0: 1.0: 1.5 to 9.0 to give a polyester resin having an acid value of 40 to 300.

Abstract: An improved latex composition is provided that has been found to exhibit a superior ability to form a substantially uniform polymeric film when applied to a substrate. The composition is capable of being handled and applied to a substrate in the absence of excessive foaming. The aqueous composition includes as essential components specified concentrations of a specifically-defined normally liquid predominantly hydrophobic nonionic alcohol ethoxylate surfactant, and a solely hydrophobic defoaming agent (e.g., a hydrocarbon-based mineral oil). It is possible for the composition to be applied even to a hydrophobic substrate (e.g., a polyester film substrate). Compositions of the present invention, following application to a substrate and the volatilization of the water component, form a substantially uniform polymeric film that can serve as a coating or adhesive.

Abstract: Radiation-curable acrylates are prepared by a process in which the hydroxy compound is reacted with acrylic acid or methacrylic acid in a first stage and, in a second stage, the reaction product of the first stage is reacted with an epoxide compound in the presence of, as a catalyst, a quaternary ammonium or phosphonium compound of the general formula ##STR1## where X.sup.- is an opposite ion and R.sup.1 to R.sup.4 independently of one another are each C.sub.1 -C.sub.18 -alkyl which may be substituted by one or two phenyl groups or are each C.sub.6 -C.sub.12 -aryl which may be substituted by one or two C.sub.1 -C.sub.6 -alkyl groups.

Abstract: The invention relates to basecoats for the production of paint systems of the basecoat-clearcoat type, which comprise a water-thinnable polyacrylate resin obtainable by polymerizing in a first stage in an organic solvent ethylenically unsaturated monomers free from carboxyl groups and, after at least 80% by weight of these monomers have reacted, polymerizing in a second stage monomers containing carboxyl groups and neutralizing the polyacrylate resin obtained in this way.

Abstract: An anionic dispersion polymerization process is described for preparing linear block copolymers containing an odd number of blocks including blocks of polymerized styrenic compound, e.g., styrene, (A blocks) which are the end or terminal blocks of the polymer and which alternate along the polymer chain with elastomeric blocks of polymerized conjugated diene units (B blocks). The process includes initially contacting the total amount of styrenic compound to be utilized in forming the block copolymer under polymerization conditions with an anionic initiator and dispersant in an inert dispersion medium in which the polymer is insoluble and carrying out the process in stages wherein less than the total amount of styrenic compound is allowed to polymerize, alternating with stages wherein amounts of diene are added and allowed to polymerize completely. The addition of diene interrupts the polymerization of styrenic compound due to the greater tendency of diene to polymerize.

Abstract: An improved extrusion coater having at least two coater slots for applying one or more magnetizable layers to a flexible nonmagnetic substrate is described. The upper lip of the outlet orifice is recessed relative to the lower lip and, in addition, the edge of a right parallelepiped magnet which has a gradient of more than 400 A/cm.sup.2 in the direction of the extruder slot, resulting in a stabilized liquid cushion, is arranged opposite the outlet orifice for the dispersions from the extrusion coater, on the other side of the substrate. It is thus possible to apply very thin layers and to make the meniscus insensitive to interfering forces. To reduce the edge bead, a stripping plate (13) which is extended beyond the range of the upper or lower lip of the extrusion coater, in the direction of the coated material web (1), is mounted at both coating edges, a minimum distance of from 0.05 to 0.8 mm between the surface (19) of the stripping plate (13) and the coated material web being established (FIG. 1).