Abstract: A particulate graft polymer comprisingA: from 30 to 80% by weight of one or more elastomeric polymers A having a mean particle size of from 30 to 1000 run, comprising, based on A,A1: from 85 to 99.8% by weight of one or more alkyl acrylates A1 having from 1 to 8 carbon atoms in the alkyl radical,A2: from 0.1 to 5% by weight of one or more polyfunctional, crosslinking monomers A2, andA3: from 0.1 to 10% by weight of one or more monomers A3 containing one or more acid groups, orA11: up to 100% by weight of a diene A11,A12: up to 50% by weight of one or more vinyl-aromatic monomers A12,A13: up to 10% by weight of one or more monomers A13 containing one or more acid groups, as the graft base, andB: from 20 to 70% by weight of a shell B grafted onto the elastomeric polymer A and comprising, based on B,B1: from 50 to 89.9% by weight of one or more vinylaromatic monomers B1,B2: from 10 to 49.9% by weight of one or more polar, copolymerizable, ethylenically unsaturated monomers B2, andB3: from 0.

Abstract: Azo dyes useful for dyeing or printing textile fibers or fabrics and containing novel aminobenzo heterocycles as diazo component have the formula ##STR1## where X is nitrogen or a radical of the formula CR.sup.6, where R.sup.6 is hydrogen, C.sub.1 -C.sub.4 -alkoxycarbonyl or C.sub.1 -C.sub.6 -alkanoyl,R.sup.1 and R.sup.2 are substituted or unsubstituted C.sub.1 -C.sub.10 -alkyl or substituted or unsubstituted C.sub.3 -C.sub.4 -alkenyl or additionally in the case of R.sup.1 hydrogen,R.sup.3 is hydrogen or C.sub.1 -C.sub.4 -alkoxy,R.sup.4 is C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.4 -alkoxy, substituted or unsubstituted C.sub.1 -C.sub.8 -alkanoylamino, C.sub.1 -C.sub.4 -alkylsulfonylamino, C.sub.3 -C.sub.4 -alkenoylamino or substituted or unsubstituted C.sub.1 -C.sub.4 -alkoxycarbonylamino, andR.sup.5 is hydrogen, nitro, halogen, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkylthio or cyano.

Abstract: A process for the separation of 1,4-butanediol from mixtures obtained by the catalytic hydrogenation of maleates, fumarates, and/or succinates, which also contain tetrahydrofuran, water, C.sub.1 -C.sub.4 alcohols, succinic diesters, hydroxybutyrates, alkylhydroxyalkyl succinates, gamma-butyrolactone and butyrates, in addition to 1,4-butanediol, comprising the following steps:a) separating, in a first column having an actual number of plates of from 20 to 70 and operated at a top pressure of from 50 to 1100 mbar and preferably from 50 to 500 mbar and a top temperature of from 40.degree. to 120.degree. C., alcohol, water and tetrahydrofuran, as overhead product,b) feeding the bottom product of the first column into a second column having an actual number of plates of from 30 to 90 and withdrawing the overhead product consisting of alcohol and butyrate and obtained at a top pressure of from 45 to 250 mbar and a top temperature of from 45.degree. to 120.degree. C.

Abstract: A process for thermoplastic processing and sintering an unplastifiable polymer comprises dispersing the unplastifiable polymer in powder form in a melt of a polyacetal or a mixture of polyacetals, cooling the resulting mixture, granulating it, forwarding the granules to a thermoplastic processing stage, injection or extrusion molding, exposing the molding to an atmosphere which contains an acidic gas, thereby de-polymerizing the polyacetal, enveloping the remaining porous molding on all sides in a gas/liquid-impermeable film, heating in an autoclave, and isostatically sintering the molding with pressure from all sides to form the finished article.

Abstract: A process for preparing melt spun polymeric fiber made from polymerized amide monomers includes the steps of pigmenting the polymer, incorporating within the polymer sufficient SO.sub.3 H groups or salts thereof to give the polymer a sulphur content of between about 10 and about 160 equivalents per 10.sup.6 grams polymer and thereafter chemically blocking with a chemical blocking agent a portion of amino end groups present in the sulphonated polymer.

Abstract: In a sheetlike composite comprising a polyolefin matrix and natural fiber mats as reinforcement the natural fibers have a basis weight of more than 10 dtex. Sisal fibers are preferred. The composites are used in particular in automotive construction.

Abstract: A refrigerator cabinet is provided with a plastic liner, the inside wall of the refrigerator, which is resistant to chemical degradation by fluorocarbons. Freon and Freon substitutes used as blowing agents for foaming the insulation contained between an outer metal cabinet and on the inside wall of the refrigerator can cause blistering, cracking, and sometimes dissolution of materials used to form the plastic liner which is the inside wall of the refrigerator. There is provided a plastic liner which is resistant to those blowing agents and particularly to those blowing agents which are partially halogenated and tend to be more aggressive than Freon. The plastic liner wall maintains impact strength and toughness after exposure to fluorohydrocarbons conventionally employed in refrigerator units for in situ polyurethane foam production.

Abstract: An aqueous polymer dispersion with a solids volume concentration of at least 50% by volume is obtainable by polymerizing monomers by the method of free radical aqueous emulsion polymerization with the addition of at least two starting polymer dispersions, of which one contains not only particularly finely divided but also coarsely divided polymer particles.

Abstract: Final aqueous polymer dispersions are obtainable by polymerizing radical polymerizable monomers with the addition of an aqueous dispersion of a starting polymer by the method of free radical aqueous emulsion polymerization.

Abstract: The present invention relates to a process for the preparation of a hard foam containing urethane groups or urethane and isocyanurate groups by the polyisocyanate polyaddition process, by reactinga) a polyoxypropylene- or polyoxyethylene-polyoxypropylene-polyol containing secondary hydroxyl groups, having a functionality of from 3.5 to 4.3, a hydroxyl number of from 350 to 650 and a viscosity of from 500 to 2,500 mPa.multidot.s at 23.degree. C.

Abstract: An improved process for preparing E,Z-butenedial bis(dialkyl acetals) by reacting the corresponding 2,5-dialkoxy-2,5-dihydrofurans with the corresponding lower alkanols in the presence of an acid at elevated temperature entails carrying out the reaction in the presence of approximately equimolar amounts of a trialkyl orthoformate and in the presence of catalytic amounts of a strong mineral acid or of a strong organic acid.

Abstract: Compounds of formula I ##STR1## and compounds of formula Ia ##STR2## where the substituents are as defined in the specification.

Abstract: The invention relates to aqueous electrocoating paints which contain 2 to 10% by weight of an anticorrosive pigment based on zinc silicate in combination with 1 to 15% by weight of a very fine quartz powder or cristobalite powder coated with epoxysilane or aminosilane, the percentages by weight being based on the total solids content of the electrocoating paint and the anticorrosive pigment being preparable by fusing together 35 to 65% by weight of ZnO, 15 to 35% by weight of SiO.sub.2 and 0 to 20% by weight of B.sub.2 O.sub.3 and/or 0 to 20% by weight of WO.sub.3 and/or 0 to 20% by weight of MoO.sub.3 and/or 0 to 20% by weight of SnO.sub.2, the components being fused together using at least one of the cited oxides besides ZnO and SiO.sub.2 in such a manner that the percentages by weight always total 100.

Abstract: Solid isocyanate-terminated prepolymer powders useful in preparation of films, coatings, and one-component adhesives are prepared by reacting a low molecular weight di- or polyisocyanate with a glycol mixture in a solvent in which the isocyanate is soluble but the reaction product is not.

Abstract: Indolizinetrimethine dyes useful for laser-optical recording media have the formula ##STR1## where the variables are defined as follows: R.sup.1 is C.sub.1 -C.sub.22 -alkyl which may be substituted by halogen, hydroxyl, C.sub.1 -C.sub.6 -alkoxy, benzyloxy, C.sub.1 -C.sub.6 -alkanoyl, C.sub.1 -C.sub.6 -alkoxycarbonyl or phenyl, C.sub.3 -C.sub.7 -cycloalkyl, which may be substituted by halogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy, or phenyl which may be substituted by halogen, hydroxyl, cyano, C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -alkoxy, carboxyl, C.sub.1 -C.sub.6 -alkoxycarbonyl or hydroxysulfonyl,R.sup.2 has one of the meanings of R.sup.1, except than the carbon chain of C.sub.1 -C.sub.22 -alkyl may be interrupted by from one to five oxygen atoms in ether function,R.sup.3 is hydrogen, halogen or C.sub.1 -C.sub.6 -alkyl,Z is --O-- or --NH--, andAn.sup..crclbar. is one equivalent of an acid anion.

Abstract: Electrostatic toners contain a polymeric binder and, as a charge stabilizer, a compound of the formula ##STR1## where Z is C.sub.1 -C.sub.20 -alkyl which is unsubstituted or substituted by phenyl or Z is C.sub.5 -C.sub.7 -cycloalkyl or unsubstituted or substituted phenyl, X and Y are each cyano or a radical of the formula --CO--OR.sup.1, --CO--NR.sup.1 R.sup.2 or --C--R.sup.3, where R.sup.2 is C.sub.1 -C.sub.20 -alkyl which is unsubstituted or substituted by phenyl or R.sup.1 is C.sub.5 -C.sub.7 -cycloalkyl, R.sup.2 is hydrogen or C.sub.1 -C.sub.4 -alkyl and R.sup.3 is C.sub.1 -C.sub.20 -alkyl which is unsubstituted or substituted by phenyl or R.sup.3 is C.sub.5 -C.sub.7 -cycloalkyl or unsubstituted or substituted phenyl, or X and Y together form a radical of the formula --CO--L--CO-- or --CO--CH.dbd.C(CH.sub.3)--O--CO--, where L is C.sub.2 -C.sub.4 -alkylene, and cat.sup..sym. is one equivalent of a cation.

Abstract: Copolymers are obtainable by (1) copolymerization of a monomer mixture of(A) from 1 to 99% by weight of at least one monomer of the general formula ICH.sub.2 .dbd.C(E)CH.sub.2 --O--CH.sub.2 C(F).dbd.CH.sub.2 Iwhere E and F are selected from the group consisting of --COOR.sup.1, --COR.sup.1, --CONR.sup.2 R.sup.3 and --CN, and R.sup.1 is H, C.sub.1 -C.sub.18 -alkyl, unsubstituted or substituted C.sub.3 -C.sub.8 -cycloalkyl or C.sub.3 -C.sub.8 -cycloalkyl- C.sub.1 -C.sub.5 -alkyl, hydroxy-C.sub.1 -C.sub.5 -alkyl, amino-C.sub.1 -C.sub.5 -alkyl, N-C.sub.1 -C.sub.4 -alkylamino-C.sub.1 -C.sub.5 -alkyl, N, N-di-C.sub.1 -C.sub.4 -alkylamino-C.sub.1 -C.sub.5 -alkyl, unsubstituted or substituted C.sub.6 -C.sub.18 -aryl or C.sub.6 -C.sub.18 -aryl-C.sub.1 -C.sub.4 -alkyl, andR.sup.2 and R.sup.3 are each H, C.sub.1 -C.sub.18 -alkyl, unsubstituted or substituted C.sub.3 -C.sub.8 -cycloalkyl or C.sub.3 -C.sub.8 -cycloalkyl-C.sub.1 -C.sub.5 -alkyl, unsubstituted or substituted C.sub.6 -C.sub.18 -aryl or C.sub.6 -C.sub.

Abstract: The invention relates to water blown integral skin polyurethane foams made with a particular isocyanate quasi-prepolymer and resin side ingredients to yield a foam having good overall mechanical roperties. The isocyanate quasi-prepolymer component of the present invention comprises from 0.5 weight percent to 30.0 weight percent or less uretonimine-carbodiimide-modified diphenylmethane diisocyanate, from 50 weight percent to 80 weight percent 4,4'-diphenylmethane diisocyanate and reacted with from 15 weight percent to 40 weight percent of a polyether polyol containing predominately secondary hydroxy groups and having an average molecular weight from about 2,000 to 10,000, an average functionality from 1.5 to about 3.2, and a hydroxyl number from about 20 to 60. The resin side component comprises a high molecular weight polyether polyol with an average functionality from 1.5 to about 3.2, water as a blow agent, and optionally an mono- or di-functional alcohol composition having from 8 to about 30 carbon atoms.

Abstract: The present invention relates to a polycondensation and/or addition product containing carboxyl groups and amino groups. This can be obtained by reactinga) polycarboxylic acids or anhydrides thereof, if appropriate together with monocarboxylic acids,b) polyols, if appropriate together with monools, and, if appropriatec) further modifying components, and, if appropriate,d) a component which is capable of reacting with the reaction product from a), b) and, if appropriate, c), with the proviso that the final product contains tertiary amino groups which originate from components a) and/or b) and/or d), and the reaction product from a), b), if appropriate c) and if appropriate d) has an acid number from 5 to 200, preferably 10 to 130, and an amine number from 3 to 150, preferably 10 to 100.

Abstract: Compounds are described having the formula: ##STR1## Z represents a cyanuric ring nucleus or the residue of a polyol, L.sub.1, L.sub.2, and L.sub.3 each independently represents a divalent linking group or a covalent bond, andR.sub.1, R.sub.2, and R.sub.3 each independently represents H, alkyl, cycloalkyl, or aryl.These compounds are useful as crosslinking agents for curable compositions such as coating compositions.