Abstract: In moldings which have a density of from 0.1 to 0.4 g/cm.sup.3 and contain silica aerogel particles which have a mean diameter d.sub.m of from 0.001 to 8 mm and are bonded to one another by means of at least one organic or inorganic binder, the binder contains sheet silicates and/or clay minerals.

Abstract: A compound of the formula ##STR1## where A is an n-valent organic radical and n is an integer greater than 1.

Abstract: Abstract of the Disclosure: Diphenylheteroalkyl derivatives of the formula I ##STR1## where A and R.sup.1 -R.sup.6 have the meanings specified in the description, and the preparation thereof are described.The substances are suitable for controlling diseases and as cosmetic agents.

Abstract: An air intake manifold for use with an internal combustion engine is provided with a labyrinth configuration in order to reduce the amount of space consumed by the manifold. The manifold is preferably made from a plastic material for reducing the weight of the manifold and for providing an inexpensive and relatively simple molding process.

Abstract: An apparatus for melt mixing and spinning synthetic polymers, which has a plurality of spinning nozzle units, a main extruder with a capacity sufficient to feed a polymer melt to the plurality of spinning nozzle units, a main metering pump for receiving the polymer melt through a conduit system from the main extruder and directing the polymer melt through a branched conduit system including a first branch and a second branch to the spinning nozzle unit, a plurality of multiple way fluidic devices, a two way valve for receiving the polymer melt from the main metering pump and for directing the polymer melt through the first branch or through the second branch and through the multiple way fluidic devices to the plurality of spinning nozzle units, thereby directing the way within the multiple way fluidic devices, a plurality of concentrate extruders for directing a plurality of concentrates through the multiple way fluidic devices to the spinning nozzle units, each of said multiple way fluidic devices thereby co

Abstract: 5-Hydroxy-4-methyl-2(5H)-furanone is prepared by cyclization of alkyl .beta.-formylcrotonates by heating with dilute aqueous hydrochloric acid or, advantageously, in the presence of dilute aqueous hydrochloric acid and catalytic amounts of methanol as solubilizer, subsequent workup of the reaction mixture by distillation and, where appropriate, isomerization of the 5-methoxy- or 5-ethoxy-4-methyl-2(5H)-furanone, which is formed as byproduct, by heating with dilute hydrochloric acid.

Abstract: Plant growth regulator (PGR) compositions include a plant growth regulating effective mixture of (A) a N,N-dimethyl piperidinium salt (preferably, mepiquat chloride), (B) a hexitol (preferably, myo-inositol), and optionally (C) a compound which promotes cytokinesis in plant cells (i.e., a cytokinin). The hexitol and cytokinin are most preferably provided collectively in the composition by the presence of an effective amount of coconut milk. Synergistic results in terms of enhanced cotton lint yields are obtained by applying the PGR compositions of this invention to growing cotton plants.

Abstract: Triazolopyrimidines of the formula ##STR1## where A, D and X have the meanings stated in the description, and their preparation are described. The novel compounds are suitable for controlling diseases.

Abstract: The invention relates to a process for the production of rigid to semirigid polyurethane foams having an increased proportion of open cells and reduced shrinkage using recyclate polyols. The invention furthermore relates to the rigid to semirigid polyurethane foams produced by this process.

Abstract: Pyridone dyes useful for thermal transfer have the formula ##STR1## where R.sup.1 is hydrogen or C.sub.1 -C.sub.4 - alkyl,R.sup.2 and R.sup.3 are identical or different and each is, independently of the other, hydrogen, substituted or unsubstituted C.sub.1 -C.sub.12 -alkyl, C.sub.5 -C.sub.7 -cycloalkyl, substituted or unsubstituted phenyl, substituted or unsubstituted pyridyl, substituted or unsubstituted C.sub.1 -C.sub.12 -alkanoyl, C.sub.1 -C.sub.12 -alkoxycarbonyl, substituted or unsubstituted C.sub.1 -C.sub.12 -alkylsulfonyl, C.sub.5 -C.sub.7 -cycloalkylsulfonyl, substituted or unsubstituted phenylsulfonyl, substituted or unsubstituted pyridylsulfonyl, substituted or unsubstituted benzoyl, pyridylcarbonyl or thienylcarbonyl or are together with the nitrogen atom to which they are bonded unsubstituted or C.sub.1 -C.sub.4 - alkyl-substituted succinimido, unsubstituted or C.sub.1 -C.sub.

Abstract: N-Alkenylcarboxamides of the formula I ##STR1## where at least one of the radicals R.sup.1 is hydrogen, the second radical R.sup.1 is hydrogen or C.sub.1 -C.sub.4 -alkyl and R.sup.2 is hydrogen or an aliphatic, cycloaliphatic or aromatic radical, are prepared by reacting an alkenyl carboxylate of the formula II ##STR2## where R.sup.1 has the abovementioned meanings and R.sup.3 is hydrogen or an aliphatic, cycloaliphatic or aromatic radical, and a carboxamide of the general formula III ##STR3## where R.sup.2 has the abovementioned meanings, in the presence of a base.

Abstract: A filter element surface is coated with particulate polyamide which serves as a filter aid to trap polyamide oligomers suspended in water. The particulate polyamide is preferably coated onto a surface of a bag filter so that polyamide oligomers flowing through the coated bag filter surface will adhere to the polyamide particles forming an oligomer cake thereon which encapsulates the polyamide particles. Momentarily equalling the pressure differential across, or reversing flow through, the coated bag filter surface (i.e., back-pulsing) will cause the oligomer cake and polyamide particles encapsulated thereby to break into relatively large-sized solid aggregate particles which may be easily recovered. Since the polyamide particles which are encapsulated by the oligomer cake are chemically compatible with one another, the entire particulate aggregate may be subjected to depolymerization processing so as to recover monomers from which the polyamide is formed (e.g., caprolactam).

Abstract: Nucleic acid molecules and proteins useful for regulating the expression of genes in eukaryotic cells and organisms in an inducible manner are disclosed. In the regulatory system of the invention, transcription of a tet operator-linked nucleotide sequence is stimulated by a transcriptional activator fusion protein composed of two polypeptides, a first polypeptide which binds to tet operator sequences in the presence of tetracycline or a tetracycline analogue and a second polypeptide which directly or indirectly activates transcription in eukaryotic cells. In one embodiment, the fusion protein comprises a mutated Tet repressor operatively linked to a transcriptional activation polypeptide, such as a portion of herpes simplex virus virion protein 16. In the absence of an inducing agent (tetracycline or a tetracycline analogue), transcription of the tet operator-linked nucleotide sequence remains uninduced.

Abstract: Polymer prepared by anionic polymerization and having a number average molecular weight of from 300,000 to 10,000,000 contain, as components,from 10 to 100% by weight of an ethylenically unsaturated vinyl-aromatic a),from 0 to 90% by weight of an aliphatic diene having two conjugated double bonds b) andfrom 0 to 30% by weight of further ethylenically unsaturated monomers c).

Abstract: A laminate comprising a substrate, a thermoplastic film, a paper layer, and a surface-finishing coating is described. The thermoplastic film is a coextruded, three-layer plastic film. The outer layers of the plastic film contain one or more polyolefins having a carboxyl group content of 0.05 to 30% by weight, and the inner layer of the plastic film contains polyethylene, polypropylene, and polyethylene copolymer, or a polypropylene copolymer. The laminates may be produced in one or more process steps and are useful for the manufacture of furniture and boards.

Abstract: Improved process for the preparation of astaxanthin by Wittig reaction of 2 mol of 3-methyl-5-(2,6,6-trimethyl-3-oxo-4-hydroxy-1-cyclohexenyl)-2,4-pentadieny ltriarylphosphonium salts with one mol of 2,7-dimethyl-2,4,6-octatrienedial avoiding the use of halohydrocarbons as solvents.

Abstract: 4,4'-disubstituted bis(2,6-diisopropylphenyl)carbodiimides of the formula (I) ##STR1## where R is 1-methyl-1-phenylethyl, phenoxy or tert-butyl, a process for their preparation, their use as stabilizers against hydrolytic degradation of polyaddition and polycondensation products containing ester groups, and the novel 4-(1-methyl-1-phenylethyl)-2,6-diisopropyl-, 4-phenoxy-2,6-diisopropyl- and 4-tert-butyl-2,6-diisopropylphenyl isocyanates which can be used for their preparation.

Abstract: A process for preparing finely divided mixtures of amphiphilic polymers and polycarboxylates, which comprises mixing(a) aqueous dispersions or colloidal aqueous solutions with at least one amphiphilic polymer, and(b) an aqueous solution of a polycarboxylatein a weight ratio of (a):(b) of from 1:1 to 1:20, each based on the solids, or dispersing at least one amphiphilic polymer in an aqueous solution of a polycarboxylate, and spray-drying the dispersions thus obtainable to form finely divided polymer mixtures, use of the finely divided polymer mixtures as ingredient of detergent and as laundry aftertreatment, and finely divided polymer mixtures having a particle size from 20 .mu.m to 3 mm prepared by the above-indicated process.

Abstract: Synthetic polymers are melt-mixed and spun from a mixture of respective first and second polymer melt flows. Specifically, the mixture of first and second polymer melt flows are mixed at a fluidic mixing device having a mixing intersection which receives the first and second polymer melt flows and discharges the mixture thereof respectively into at least one or another of multiple discharge ports fluid-connected with a respective spinning nozzle.

Abstract: Graft copolymers obtained by(A) polymerizing 10 to 89 wt % of a mixture consisting essentially of either(a1) from 70 to 99.89 wt % of a C.sub.1 -C.sub.18 -alkyl ester of acrylic acid,(a2) from 0.1 to 10 wt % of a polyfunctional monomer,(a3) from 0 to 29.89 wt % of an ethylenically unsaturated monomer which differs from (a1) and (a2), is copolymerizable therewith and carries no acid group and(a4) from 0.01 to 10 wt % of a copolymerizable monomer containing at least one acid groupor(a5) from 49.99 to 99.99 wt % of at least one diene,(a6) from 0 to 50 wt % of a monomer which is copolymerizable therewith and carries no acid group and(a7) from 0.01 to 10 wt % of a copolymerizable monomer containing at least one acid groupin the presence of from 1 to 80 wt % of a cross-linked silicone rubber to form a copolymer A,and(B) polymerizing 10 to 89 wt % of a mixture consisting essentially of(b1) from 50 to 99.99 wt % of a styrene compound of the formula (I) ##STR1## where R.sup.1 and R.sup.