Abstract: A continuous, high speed (greater than 800 meters per minute) process and apparatus enable the production of a multifilament carpet yarn having a degree of filament intermixture high enough so that a standard deviation of less than 6.0 results upon conducting a Standard Yarn Streak Potential Test, as described herein. The apparatus and process allow the production of a multicolored carpet yarn which exhibits a reduced tendency to streak and an increased retention of tip definition.

Abstract: The invention relates to a process for the preparation of cyclopentanone from adipic acid wherein adipic acid vapor in an inert gas at a temperature of from 250.degree. C. to 450.degree. C., possibly accompanied by water vapor, is passed over an oxygenous acidic or basic catalyst.

Abstract: Polyolefin foams which have a density of from 30 to 300 g/l, do not exhibit after-shrinkage and possess taut cells are prepared by letting down a polyolefin/blowing agent gel, the latter first being let down to 0.1-10 bar gage pressure and the foam being kept at this pressure until it has cooled to at least 20.degree. C. below the expansion temperature.

Abstract: A multilayer coating is produced on a substrate by a process in which an aqueous dispersion containing(A) a carbonyl-containing copolymer of monoolefinically unsaturated compounds, not less than 10% by weight of which have carbonyl groups which react with hydrazide groups, and(B) polyhydrazides,is applied as a base coat to the substrate, the water is flashed off and one or more further conventional coats are applied to this base coat as a dispersion or solution, the solvent is flashed off and, if required, the resulting multilayer coating is baked for from 10 to 60 minutes at from 70.degree. to 180.degree. C.

Abstract: Photosensitive recording elements which possess a photosensitive recording layer which is applied to a dimensionally stable base, if necessary via one or more intermediate layers, and have good photochemical properties and a long shelf life contain a compound of the general formula (I) ##STR1## where M is a hydrogen atom or proton, an alkali metal cation, the ammonium cation or an amine cation and R.sup.1 and R.sup.2 are identical or different and are each a substituted s-triazine ring, in the photosensitive recording layer and/or any intermediate layer present, in order to control the photochemical properties.

Abstract: Alkyl pentenoates are prepared by reacting butadiene with carbon monoxide and an alkanol in the presence of a cobalt carbonyl complex and a tertiary, aromatic heterocyclic nitrogen base at from 80.degree. to 160.degree. C. under from 100 to 1,000 bar in the presence of from 0.1 to 10% by volume of hydrogen, based on the amount of carbon monoxide used.

Abstract: Vinylglyoxal derivatives of the general formula I ##STR1## where R is straight-chain or branched alkyl or alkenyl, cycloalkyl or unsubstituted or substituted phenyl, are prepared by a process in which bicyclo[2.2.1]hept-5-enecarbaldehyde of the formula V ##STR2## is either (a) subjected to autocondensation with formation of a compound of the formula VII ##STR3## or (b) reacted with a compound of the general formula IIR-CH.dbd.O (II)where R has the above meanings, with formation of a mixture of the compounds of the general formulae VIII (a) and (b) ##STR4## where R is as defined above, in the presence of a catalyst, and the compound of the formula VII or the compounds of the formulae VIII (a) and (b) is or are oxidized to the corresponding dicarbonyl compounds, after which gas-phase pyrolysis is carried out at from 500.degree. to 700.degree. C. and under reduced pressure, in particular less than 10.sup.-1 mbar, and, if desired, the resulting compound of the general formula I is further purified.

Abstract: An improved multifilamentary fibrous material is formed having particles of a matrix-forming thermoplastic polymer substantially uniformly dispersed among adjoining filaments in the absence of fusion bonding. The polymer particles initially are dispersed in an aqueous medium containing an effective amount of a dissolved polymeric binding agent and the viscosity of the medium subsequently is substantially increased to at least 50,000 cps. to form a gelled impregnation bath having a plastic flow characteristic with shear-thinning behavior wherein the polymer particles are substantially uniformly suspended. The resulting impregnation bath is caused to flow between the adjoining filaments of the multifilamentary fibrous material with a concomitant viscosity reduction which aids in the incorporation of the polymer particles. The concentration of the aqueous medium in the product is controlled to yield a uniform, handleable, drapable, tacky, and highly stable product.

Abstract: Disazo compounds based on 4,4'-diaminodiphenyl compounds contain not less than 50% by weight of a disazo compound of the general formulaA--N.dbd.N--Z--N.dbd.N--B (I)where Z is a radical of an unsubstituted of symmetrically substituted diphenylene, A is a radical of a coupling component of a 1-phenylpyrazolone or of an acetoacetarylide, where the phenyl and the aryl radical is substituted by sulfo or carboxyl groups, and B is a radical of a coupling component based on 1-phenylpyrazolone or acetoacetarylide, which are free of sulfo and/or carboxyl groups.The disazo compounds can be obtained by coupling the tetrazotized diamine H.sub.2 N--Z--NH.sub.2 to the coupling component AH containing an acidic group in a medium containing a mineral acid, and then coupling the product to BH in a buffered medium (pH about 4).The novel disazo compounds are suitable as additives to pigments, in particular azo and disazo pigments, for improving the transparency and heat stability of the pigment particles, and the flow behavior.

Abstract: One-component, moisture-curable sealant compositions having fast cure times comprise a mixture of a silane-capped polyurethane polymer, an aminosilane cross-linking agent, and a silyl-substituted piperazinyl accelerator.

Abstract: Secondary-amino-functional organosilicone are prepared by the reaction of an N-substituted, secondary allylamine with an Si-H functionalized organosilicone particularly a di- or polysiloxane. The resulting products are useful in toughening thermosetting matrix resins, particularly epoxy resins.

Abstract: Distillation residues from the purification of caprolactam are worked up by heating in the presence of sodium hydroxide or potassium hydroxide and in the presence of a high-boiling hydrocarbon at from 250.degree. to 500.degree. C. and continuously removing the caprolactam.

Abstract: A process for making a directly-compressible vitamin powder utilizes a conventional spray-dryer. The resulting powder is comprised of a fat-soluble vitamin, a water-soluble carbohydrate, and a gelatin having a bloom number between 30 and 300.

Abstract: The invention pertains to flame retardant flexible polyurethane foams resistant to cigarette smoldering after being subjected to flex fatigue, prepared by reacting a conventional polyether polyol, toluene diisocyanate, and a blowing agent, and incorporating substantially uncrushed melamine in an amount ranging from about 5 weight percent to about 25 weight percent.

Abstract: A process for tempering unextracted polycaprolactam is disclosed which results in polycaprolactam having suitable physical and chemical properties for melt extrusion and spinning, without the need for conventional solvent/water extraction and drying of crude granules.

Abstract: Magnetic recording media consist of a flexible disk-shaped nonmagnetic base, a cobalt/chromium layer applied thereto and suitable for vertical recording, and a friction-reducing layer of amorphous carbon present on this alloy layer.

Abstract: In block copolymers of the general formula A--B--A' which have a molecular weight of less than 300,000 and consist of from 18 to 40% by weight of a vinylaromatic hydrocarbon and from 60 to 82% by weight of one or more partially or completely hydrogenated hydrocarbons and in which A and A' are each a polymer block of a vinylaromatic hydrocarbon and B is a polymer block of a diene hydrocarbon, the weight ratio of the polymer blocks A to A' is less than or equal to 1:5 and greater than 1:10 and the mean molecular weight of polymer block A is from 2,000 to 20,000 and that of the polymer block A' is from 10,000 to 110,000 and the molecular weight of the B block is not less than 18,000.

Abstract: Abstract of the disclosure: Novel photopolymerizable recording materials suitable in particular for producing photoresist layers and lithographic printing plates are composed of one or more photopolymerizable, olefinically unsaturated organic compounds, a photopolymerization initiator, a color-forming system composed of a color former and a photooxidant, novel 4-quinazolone compounds as sensitizers of the formula (I) ##STR1##

Abstract: Vinyl ethers of the formula (I) ##STR1## where R.sup.1 to R.sup.3 are identical or different and are each hydrogen, a straight-chain or branched alkyl or alkenyl radical of not more than 12 carbon atoms, halogen-substituted alkyl, a cycloalkyl or cycloalkenyl radical of 5 to 8 carbon atoms, an aryl, alkylaryl, alkenylaryl, aralkyl or aralkenyl radical of 6 to 16 carbon atoms, halogen-substituted aryl or a heterocyclic radical and furthermore R.sup.1 and R.sup.2 or R.sup.1 and R.sup.3, together with the carbon atom to which they are bonded, may form a cycloalkane, cycloalkene or heterocyclic structure, and R.sup.4 is alkyl, alkylaryl or aralkyl, are prepared by a process in which an alcohol is eliminated from an acetal or ketal of the formula (II) ##STR2## where R.sup.1 to R.sup.4 have the above meanings, in the presence of borosilicate and/or iron silicate zeolites as catalysts.

Abstract: The present invention relates to novel substituted cyclohexanol compounds possessing a sandalwood aroma which are useful as fragrance materials. The invention also provides methods for synthesis thereof through a novel aldehyde intermediate. The compounds of the invention have the formula: ##STR1## wherein A is ##STR2## and wherein R.sub.1 is methyl or ethyl, R.sub.2 -R.sub.7 are independently hydrogen or methyl with the proviso that a maximum of two of the substituents R.sub.2 -R.sub.7 are methyl, and R.sub.8 is hydrogen, lower alkyl (C.sub.1 to C.sub.5) or acyl. The invention also provides fragrance compositions which utilize the compounds of the invention to impart a sandalwood aroma to perfume compositions, colognes and perfumed articles.