Abstract: Laminates of improved edge strength have a foam or honeycomb core layer A comprising a heat resistant plastic and cover layers B comprising fiber reinforced heat resistant plastic, at least one edge of the core layer being joined to a foam strip C of a heat resistant thermoplastic material whose density is higher than the density of the core.

Abstract: Trialkylamines and methyl formate are recovered from reaction mixtures obtained in the preparation of trimethylolalkanes by reaction of n-alkanals with from 2.2 to 4.5 moles of formaldehyde in aqueous solution in the presence of from 0.6 to 3 mole of trialkylamine, each quantity based on 1 mole of alkanal, and subsequent hydrogenation in a process wherein the crude reaction mixturea) is heated to from 100.degree. to 200.degree. C.

Abstract: Polycaprolactam having a regulated amino end group content is produced in a continuous process in which caprolactam is polymerized at 240.degree.-290.degree. C. in the presence of water as initiator and in the presence of a dicarboxylic acid as chain regulator by polymerizing caprolactam in a single stage in the presence of from 0.3 to 5% by weight of water and from 0.1 to 0.6% by weight of terephthalic acid and/or isophthalic acid, each percentage being based on caprolactam, at a uniform pressure through the entire polymerization time of from 1.0 to 1.9 bar, measured in the vapor phase above the polymerization zone, while maintaining a water content of from 0.1 to 0.5% by weight, until the sum total of the amino and carboxyl end group contents is from 115 to 150 meq/kg, with the proviso that the amino end group content does not drop below 25 meq/kg, measured on extracted polycaprolactam.

Abstract: The present invention relates to a process for the preparation of uretdione group containing polyisocyanates comprising reacting monomeric aromatic diisocyanates in the presence of 1,2-dimethylimidazole used as a catalyst in an inert organic solvent whereby the weight ratio of solvent to diisocyanate lies in a range of from 0.1:1 to 2:1.

Abstract: Finely divided, gel-like, water-swellable copolymers are prepared by copolymerizing(a) 100 parts by weight of water-soluble, monoethylenically unsaturated monomers,(b) from 0.01 to 5 parts by weight of monomers containing two or more ethylenically unsaturated double bonds and(c) from 0 to 20 parts by weight of water-insoluble, monoethylenically unsaturated monomersin 20-80% strength by weight aqueous solution in the presence of a polymerization initiator and from 0.1 to 10% by weight, based on the monomers used in the copolymerization, of a surfactant, by a process in which the monomers are copolymerized in the presence of initially from 0 to 50% by weight of the amount of surfactant to a conversion of not less than 60%, the remaining amount of surfactant is then added to the reaction mixture and the copolymerization is completed and the resulting gel particles dried.

Abstract: The invention pertains to drip retardant flexible polyurethane foams prepared by the reaction of an isocyanate with a polyol resin containing a drip retardant made of either a trialkyl end-capped amine functional silicone polymer or a trialkyl end-capped carbinol functional silicone polymer to effectively prevent the foam from dripping while burning and encourage char formation.

Abstract: A process for making a heather-dyeable or precolored heather yarn product comprises supplying a first crimped continuous filament yarn in the form of a loose matrix substantially free of filament entanglement and a second crimped continuous filament yarn which is differentially dyeable or precolored with respect to the first yarn. The second yarn is fed through a first entangling or interlacing zone and exposure of the second yarn to a fluid jet in the first entangling zone is randomly controlled to produce a color-point yarn product as the second yarn exits the first entangling zone, in which the color-point yarn product has relatively compact nodal regions of high entanglement of the filaments of the second yarn separated by bulkier regions of the same filaments relatively free of entanglement.

Abstract: In a tube bundle reactor for carrying out catalytic organic reactions in the gas phase, comprising reaction tubes (A) arranged between tubesheets (B), the reaction tubes have an inside diameter ranging from 0.5 to 3 cm, the ratio of reaction tube length to inside diameter ranges from 2 to 10, and the reaction tubes (A) are surrounded by a fluid heat transport medium flowing in the crosswise direction; said tube bundle reactor is useful in particular in exothermic organic reactions.

Abstract: The transition temperature, the saturation current density with and without a magnetic field and the proportions of normally conducting phases of ceramic superconductors having a structure derived from perovskite are adjusted by changing the content of the electronegative component or, where a plurality of such components is present, of one of the electronegative components in the ion lattice of the superconductor directly on the substrate.

Abstract: Reactive dyes of the formula ##STR1## where 1 is 0 or 1,n is 0 or 1,E is nitrogen or C--Cl,A is the radical of an azo dye attached to the triazine ring via an imino or C.sub.1 -C.sub.4 -alkylimino group,B--if E is nitrogen--is the radical of an azo dye or of a formazan dye which in either case is bonded to the triazine ring via an imino or C.sub.1 -C.sub.4 -alkylimino group or else--if n is 0--is fluorine, chlorine or unsubstituted or substituted amino, or --if E is C--C1--is fluorine, chlorine or methyl,X.sup.1 and X.sup.2 are independently of the other fluorine or chlorine,X.sup.3 is fluorine or chlorine or else--if E is C--Cl--methylsulfonyl andZ.sup.1 and Z.sup.2 are independently of the other a radical of the formula ##STR2## where L.sup.3 and L.sup.4 are independently of the other hydrogen or unsubstituted or substituted C.sub.1 -C.sub.4 -alkyl,with the proviso that l and n are not simultaneously 0 and that, if E is C--Cl or if n is 0 and Z.sup.1 is the radical of the formula ##STR3## where L.sup.

Abstract: This invention provides novel cyclic acetals useful as delayed release flavorants and odorants having the general formula: ##STR1## These compounds possess no detectable flavor or odor themselves at normal temperatures and atmospheric conditions but release an aldehyde flavorant upon heating at higher temperatures. The novel cyclic acetals of the present invention may be used as flavorants in tobacco compositions or tobacco substitutes, as sustained flavorants and odorants to mask or enhance the flavors and odors of burning tobacco products, as flavor additives to microwaveable foods, and in the preparation of chewing gums.

Abstract: Benzyl ketones of the formula ##STR1## where X is CH or N,Y is O or NR.sup.4,R.sup.1, R.sup.2 are H or alkyl,R.sup.3 is halogen, cyano, nitro, alkyl, cycloalkyl, alkoxy, haloalkyl, arylalkyl, arylalkoxy, aryloxy or aryl, and the aryl groups in turn may be substituted,R.sup.4 is OH, alkoxy or arylalkoxy andR.sup.5 is H, methyl, halogen or methoxy,and fungicides containing these compounds.

Abstract: Benzyl esters of the formula I ##STR1## where R.sup.1 is methyl, ethyl, halogen, methoxy or ethoxy, R.sup.2 is alkyl, alkenyl, cycloalkyl, cycloalkenyl, bicycloalkyl, bicycloalkenyl, C.sub.1 -C.sub.5 -alkyl-substituted cycloalkyl, C.sub.1 -C.sub.5 -substituted cycloalkenyl, C.sub.1 -C.sub.5 -alkyl-substituted bicycloalkyl or C.sub.1 -C.sub.5 -alkyl-substituted bicycloalkenyl, R.sup.3 is hydrogen, cyano, C.sub.2 -C.sub.4 -alkynyl, C.sub.2 -C.sub.4 -alkenyl or C.sub.1 -C.sub.4 -alkyl, A is the carboxylate radical of an acid component typical for pyrethroids and X is hydrogen or halogen, with the proviso that R.sup.2 is not CH.sub.2 --CH.dbd.CH--B when B is hydrogen, alkyl or alkenyl and at the same time R.sup.1 is methyl or halogen, and furthermore with the proviso that R.sup.2 is not methyl when R.sup.1 is methyl, their manufacture, their use for combating pests, and precursors for manufacturing the benzyl esters.

Abstract: A device for changing the filament count from a spinnerette assembly includes a sealing plate positioned upstream from the spinnerette assembly to prevent the passage of the material being spun into one or more particular spinnerette bores.

Abstract: Triazolopyridine dyes useful for thermal transfer of methine dyes have the formula ##STR1## where R.sup.1 is C.sub.1 -C.sub.20 -alkyl, which may be substituted and interrupted by one or more oxygen atoms, or is substituted or unsubstituted phenyl or hydroxyl,R.sup.2 is a 5- or 6-membered carbocyclic or heterocyclic ring which may be substituted and benzofused,R.sup.3 is cyano, carbamoyl, carboxyl or C.sub.1 -C.sub.4 -alkoxycarbonyl,R.sup.4 is oxygen or a radical of the formula ##STR2## where L.sup.1 is in each case C.sub.1 -C.sub.8 -alkyl which may be interrupted by 1 or 2 oxygen atoms, andX is CH or nitrogen.

Abstract: Crosslinkable aqueous polyurethane dispersions having a long shelf life containA) polyurethane which have carbonyl groups, are dispersed in water in the presence of ammonia or of organic amines and are obtainable by reactinga) organic polyisocyanates withb) compounds which contain one or more active hydrogen atoms and one or more salt groups or one or more groups capable of salt formation andc) carbonyl-containing mono- and/or polyalcohols andd) if desired chain extenders ande) if desired polyhydroxy compounds having molecular weights of from 500 to 8,000, andB) polyhydrazides.

Abstract: A primerless, one-component, moisture-curable polyurethane-based adhesive composition useful for affixing glass panels directly to electrocoat painted metal substrates comprises a polyurethane base polymer containing an electrocoat adhesion promoter. The sealant composition has fast cure times at ambient temperatures and forms a strong bond directly to electrocoat painted metal substrates without the need for a sealant primer.

Abstract: Mixtures of polyglycerol fatty esters obtainable by partial esterification of a polyglycerol mixture consisting offrom 0 to 5% by weight of monoglycerol,from 15 to 40% by weight of diglycerol,from 30 to 55% by weight of triglycerol,from 10 to 25% by weight of tetraglycerol,from 0 to 15% by weight of pentaglycerol,from 0 to 10% by weight of hexaglycerol andfrom 0 to 5% by weight of higher polyglycerolswith one or more saturated fatty acids of 12 to 22 carbon atoms or one or more unsaturated fatty acids of 16 to 22 carbon atoms, where the unsaturated fatty acid or fatty acid mixture used may furthermore contain up to 10% by weight of saturated fatty acids of 16 to 22 carbon atoms and the degree of esterification of the saturated or unsaturated fatty acids in the mixture is from 20 to 70%, are used as emulsifiers in cosmetic and pharmaceutical formulations.

Abstract: A novel optically transparent polymer alloy comprisesA) at least one elastomer which contains ethylene and propylene as copolymerized units andB) at least one elastomer which contains ethylene and (meth)acrylic acid as copolymerized units,and is used as a molding material or for the production of molding materials, moldings, films, coatings, adhesives and photosensitive recording elements.

Abstract: Acrylic coating compositions containing silver metallic flake pigments are disclosed. The coatings are particularly adapted for use in automotive top coat systems as the base coat of a pigmented base coat/clear top coat coating system. The coating compositions have a hydroxyl content of less than about 8.0 wt. %. The resulting coating compositions when dried or cured to hard durable films do not exhibit discoloration associated with silver flake coatings.