Abstract: In a proposed method for determining the immobilization of a colloidal coating dispersion which is applied to a porous substrate, the colloidal coating dispersion is applied to the porous substrate which forms a bounding surface of the measuring gap of a rheometer, and the change in the viscosity as a function of time is measured. The method is particularly suitable for measuring the immobilization of a paper coating slip on base paper.

Abstract: A transgenic mouse having somatic and germ cells in which at least one allele of an endogenous interleukin-1.beta. converting enzyme (ICE) gene is functionally disrupted is provided. The mouse may be heterozygous or, more preferably, homozygous for the ICE gene disruption. In homozygous mice, secretion of mature interleukin-1.beta. and interleukin-1.alpha. is substantially reduced relative to non-mutant mice. The mice of the invention can be used as positive controls to evaluate the efficacy of ICE inhibitors and to identify disease conditions that can be treated with ICE inhibitors. A transgenic mouse having functionally disrupted endogenous ICE genes but which has been reconstituted with a human ICE gene is also provided. This mouse can be used to identify agents that inhibit human ICE in vivo.

Abstract: Powder coating, process for the exterior coating of metal pipes, and use of the powder coating for the single-layer exterior coating of metal pipes. The powder coating comprises epoxy resins, phenolic crosslinking agents, catalysts, fillers and additives. The fillers used are crystalline silicic acids modified with glycidyl groups. The invention also relates to a process for the exterior coating of metal pipes and to use of the coatings for a single layer exterior coating of metal pipes.

Abstract: Crystalline polymers of ethylene, propylene or cyclic olefins or mixtures thereof are prepared by a process in which polymerization is carried out in the presence of a metallocene catalyst system in a dispersion.

Abstract: The process of the present invention for removing residual volatiles from polymer dispersions by performing first chemical deodorization using an initiator to remove residual monomers and then physical deodorization to remove volatile constituents comprises conducting the chemical deodorization for as long as the decrease in monomers is greater than the increase in secondary components introduced into the dispersion by the initiator, to result reliably in polymer dispersions having a residual volatiles content of less than or equal to 100 ppm.

Abstract: The use of polymers ofA) from 30 to 90 wt % of ethylene,B) from 0 to 10 wt % of other .alpha.-olefins containing 2 to 12 C-atoms which may also carry halide atoms,C) from 3 to 40 wt % of one or more acrylates or methacrylates, in which the ester radical consists of C.sub.1 -C.sub.20 alkyl, C.sub.5 -C.sub.18 cycloalkyl, or C.sub.7 -C.sub.18 aralkyl, where the said ester radicals may also carry halide atoms,D) from 7 to 30 wt % of acrylic acid and/or methacrylic acid, andE) from 0 to 10 wt % of other copolymerizable monomerfor coating or sealing panes of laminated safety glass.

Abstract: An aromatic amino sulfonic acid compound is purified by a process including steps of:(a) dissolving the aromatic amino sulfonic acid compound in aqueous medium having a basic pH;(b) acidifying the aqueous medium with acetic acid to precipitate the aromatic amino sulfonic acid compound; and(c) removing the precipitated aromatic amino sulfonic acid compound from the aqueous medium.Using acetic acid in the process results in removal of more impurities and undesirable sulfate and chloride salts to provide an improved material for synthesizing dyes and pigments.

Abstract: The present invention relates to a process for the preparation of CFC-free, flexible polyurethane (molded) foams by reactingA) liquid polyisocyanate mixtures containing bonded urethane groups having a content of NCO groups of from 22 to 30% by weight which are themselves prepared by reacting a mixture of diphenylmethane diisocyanates and polyphenyl-polymethylene polyisocyanates having a content of diphenylmethane diisocyanate isomers of from 55 to 99% by weight, based on the total weight, with at least one trifunctional polyoxypropylene-polyol having a hydroxyl number of from 20 to 60, withB) relatively high-molecular-weight polyhydroxyl compounds and, if desired,C) low-molecular-weight chain extenders and/or crosslinking agents,in the presence ofD) blowing agents,E) catalysts and, if desired,F) auxiliaries and/or additives,and to the polyisocyanate mixtures (A) modified by means of urethane groups which can be used according to the invention.

Abstract: An improved process is provided for the recovery of catalyst components from oligomeric impurities which are formed during the industrial preparation of 2,5-dihydrofuran by the catalytic isomerization of vinyl oxirane followed by an essential separation of the oligomeric by-products which otherwise cause deactivation of the catalyst. The catalyst components consist essentially of (a) an onium iodide and (b) a Lewis acid selected from the group consisting of the chloride, bromide or iodide of the metals zinc, tin, cobalt and bismuth, preferably zinc, where the catalyst optionally includes a donor ligand.

Abstract: A process for purifying alkoxylated fats by treatment with a solid substance, wherein a mixture of aluminum oxide and a silicate is employed as solid substance.

Abstract: A 5-pyrazolylbenzoic acid compound of the formula I ##STR1## wherein R.sup.1 is hydrogen, alkyl, cyanoalkyl or haloalkyl;R.sup.2 is alkoxy, alkylthio, haloalkoxy or haloalkylthio;R.sup.3 is hydrogen, cyano, nitro, halogen;R.sup.4 is halogen;R.sup.5 is cyano, halogen, alkyl, haloalkyl, alkoxy or haloalkoxy;R.sup.6 is --O--R.sup.7, --S--R.sup.7, --N(R.sup.8)--R.sup.7 or --N(R.sup.8)--OR.sup.7 ;R.sup.7 is --X--C(R.sup.9).dbd.N--O--R.sup.10, --X--C(R.sup.9).dbd.N--O--Z--R.sup.10, --X--O--N.dbd.C(R.sup.11,R.sup.12), --X--SO.sub.2 --R.sup.13 or an unsubstituted or substituted saturated 3- to 7-membered heterocycle or heterocyclylalkyl radical;R.sup.8 is hydrogen, alkyl, haloalkyl, alkenyl, haloalkenyl, alkynyl or alkylsulfonyl;and R.sup.8 to R.sup.13 are as defined in the specification, or an agriculturally useful salt of a compound I, which is useful as a herbicide and for desiccating or defoliating plants.

Abstract: Compounds of the formula I ##STR1## where B, R.sup.1, R.sup.2, n, R.sup.3, A, X, Y and Z have the meanings stated in the description, and their preparation are described. The novel compounds are suitable for controlling diseases.

Abstract: A mixture comprisinga condensation resin A) constructed from urea or urea derivatives a.sub.1) and ketones or aldehydes a.sub.2) selected from acidic-CH aldehydes or ketones and their mixtures with formaldehyde, anda radiation-curable compound B) having at least 2 acryloyl or methacryloyl groups is useful in offset printing.

Abstract: Abstract of the Disclosure: Catalyst systems for the polymerization of C.sub.2 -C.sub.10 -alk-1-enes contain, as active components,a) a metallocene complex of the general formula I ##STR1## where M is titanium, zirconium, hafnium, vanadium, niobium or tantalum, X is halogen or C.sub.1 -C.sub.8 -alkyl, Y is carbon, phosphorus, sulfur, silicon or germanium, Z is C.sub.1 -C.sub.8 -alkyl, C.sub.3 -C.sub.10 -cycloalkyl or C.sub.6 -C.sub.10 -aryl, R.sup.1 and R.sup.2 are identical or different and are each C.sub.1 -C.sub.4 -alkyl, R.sup.3 to R.sup.6 are identical or different and are each hydrogen or C.sub.1 -C.sub.8 -alkyl, or two adjacent radicals R.sup.3 and R.sup.4 and R.sup.5 and R.sup.6 in each case together form a hydrocarbon ring system of 4 to 15 carbon atoms and n is 0, 1 or 2, andb) an open-chain or cyclic alumoxane compound of the general formula II or III ##STR2## where R.sup.7 is C.sub.1 -C.sub.4 -alkyl and n is from 5 to 30.

Abstract: The present invention relates generally to polyisocyanate compositions for use in polyurethane thermoformable foams. The polyisocyanate compositions of the present invention which are also useful as binder/hardeners for prefoamed products offer improved stability at relatively low temperatures over other known polymeric diphenylmethane diisocyanate compositions.

Abstract: A process for preparing chromanol derivatives of the formula I ##STR1## where n is from 1 to 10,R.sup.1, R.sup.2,R.sup.3, R.sup.4 independently of one another are hydrogen or C.sub.1 -C.sub.4 alkyl,R.sup.5 is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.6 -C.sub.10 aryl, C.sub.7 -C.sub.18 aralkyl, C.sub.7 -C.sub.18 alkylaryl, C.sub.1 -C.sub.22 acyl, or a group protecting the hydroxyl,by reduction of the corresponding 4-oxochromanol derivatives of the formula II ##STR2## comprises reacting the 4-oxochromanol derivatives of the formula II with metallic zinc in the presence of an acid or an acid mixture.Compounds of the formula I having C.sub.1 -C.sub.22 acyl as radical R.sup.5 can also be prepared by the above-described reduction of the compounds of the formula II with hydrogen as radical R.sup.5 and simultaneous or subsequent esterification.

Abstract: Substituted guanidine derivatives of the formula I ##STR1## are prepared by a) converting urea into an alkylated isourea of the formula II ##STR2## and b) reacting the alkylated isourea with a primary or secondary amine of the formula III ##STR3## where the substituents R.sup.1, R.sup.2 and R.sup.10 have the meanings explained in the description.

Abstract: The divinyl ethers of diethylene glycol or triethylene glycol are separated from the monovinyl ether of the corresponding oligoethylene glycol by distillation, a metal hydroxide being added to the vinyl ether mixture.

Abstract: Process for producing riboflavin granules or riboflavin microgranules with a riboflavin content of from 90 to 99.5% by weight and with a particle size range from 50 to 450 .mu.m, which entails adding during the granulation at least one auxiliary selected from the group consisting of alkali metal and alkaline earth metal halides, alkali metal and alkaline earth metal carbonates, alkali metal and alkaline earth metal bicarbonates, alkali metal and alkaline earth metal phosphates, crosslinked cellulose and cellulose derivatives and crosslinked polyvinylpyrrolidone in amounts of from 0.5 to 10% by weight, all % by weight data being based in each case on the dry product.

Abstract: A homogeneous, demixing-stable polyol component comprising at least two relatively high molecular weight compounds containing at least two reactive hydrogen atoms and, if desired, low molecular weight chain extenders and/or crosslinkers and also, if desired, blowing agents, catalysts and further auxiliaries and/or additives is prepared by adding at least one amine and at least one organic and/or modified organic isocyanate to this component.This polyol component is useful for producing polyurethanes, in particular compact and foamed polyurethanes.