Abstract: The invention relates to a surface treatment composition and a method of using the composition to provide the treated surface with a suitable surface conductivity for electrostatic painting of the surface. The surface treatment composition preferably comprises a mixture of: (a) a substituted or unsubstituted aromatic polycarboxylic acid, anhydride or salt thereof, and (b) a quaternary ammonium salt or (b') an ethoxylated tertiary fatty amine, in a compatible vehicle, said composition having a pH of below about 4.5, said polycarboxylic acid and said quaternary ammonium salt or ethoxylated fatty amine each being present in said composition in an amount effective to impart to said thermoplastic surface a resistivity value of between about 10.sup.8 ohms/cm.sup.2 and about 10.sup.12 ohms/cm.sup.2, or a 90% electrostatic charge decay time of less than five seconds, or both.

Abstract: Polyfunctional N-cyanoimides and their precursors and derivatives are disclosed along with methods for their preparation and interconversion. Also disclosed are curable compositions comprising the N-cyanoimides or poly(amide-cyanoamides) and reactive diluents as well as novel dianhydrides, polyimides, and poly(amide-cyanoamides) and methods for making them.

Abstract: Method for producing alkali metal silicates from crystalline siliceous material and aqueous alkali metal hydroxide solution at high temperature and normal pressure, characterized in that cristobalite and/or tempered quartz sand are used as the siliceous material, and this material is reacted with aqueous, 20 to 50 wt. % sodium or potassium hydroxide solution at temperatures of 100.degree. to 150.degree. C. and normal pressure, the molar ratio of SiO.sub.2 to Na.sub.2 O or K.sub.2 O in the reaction mixture being between 2:1 and 1:7.

Abstract: The use of mixed hydroxyethers of the general formula IR.sup.1 O--(CH.sub.2 CH.sub.2 O).sub.x --CH.sub.2 --CH(OH)R.sup.2 (I)in whichR.sup.1 denotes an alkyl group having 1 to 10 carbon atomsR.sup.2 denotes an alkyl group having 8 to 20 carbon atoms and x denotes a number in the range from 1 to 20 as auxiliaries for the dehydration of water-containing finely divided solids, gives solids having a low water content without foaming in the water separated therefrom.

Abstract: Latent, heat-curable epoxy resin compositions containing metal carboxylate curing systems provide exceptional latency, particularly at elevated temperature, as well as facile curing, high T.sub.g and adhesive strength, and other attractive properties. The metal carboxylates comprise alkali metals and alkaline earth metals, aromatic and aliphatic metal carboxylates. The preferred curing systems comprise synergistic combinations of the metal carboxylates with cure modifiers.

Abstract: The invention relates to a process for the production of pure, substantially neutral, low-volatility organic compounds containing reactive olefinic double bonds from starting materials which contain these components together with small quantities of acidic reaction constituents and/or corresponding auxiliaries in the liquid phase by neutralization and separation of the salts formed. The process according to the invention is characterized in that, to obtain pure products which combine low residual acid values with low color standard numbers, even without distillation, the neutralization is carried out as dry neutralization using solid, finely powdered oxides, carbonates and/or hydroxides of the alkali and/or alkaline earth metals, if desired together with other insoluble basic metal oxide compounds, and the organic liquid phase is subsequently separated from the finely powdered solid phase. The oxides and/or hydroxides of calcium and/or magnesium are preferably used for neutralization.

Abstract: Magnesium on steel, zinc, aluminum and/or the alloys thereof by spraying, spray-immersion and/or immersion with an aqueous solution.

Abstract: A foam-inhibiting aqueous concentrate, stable in alkaline compositions, contains(a) about 5 to about 30% by weight of alkyl glucoside based on C.sub.6 -C.sub.12 fatty alcohols having a degree of glucosidation of about 1 to about 2,(b) about 5 to about 70% by weight of end-capped polyethylene glycol ether compound corresponding to formula IR.sub.1 O--(CH.sub.2 CH.sub.2 O).sub.n --R.sub.2 (I)wherein the radical R.sub.1 O is derived from 2-branched, even-numbered alkanols containing from 16 to 20 carbon atoms, R.sub.2 is an alkyl radical containing 4 to 8 carbon atoms, and n is a number of about 5 to about 9,(c) about 5 to about 70% by weight of non-end-capped polyethylene glycol ether compound corresponding to formula IIR.sub.5 O--(CH.sub.2 CH.sub.2 O).sub.2 --H (II)wherein the radical R.sub.5 O is derived from 2-branched even-numbered alkanols containing from 12 to 20 carbon atoms, and z is a number of about 2 to about 5.

Abstract: Octyl ethers and octadienyl ethers of glucose, sucrose, bisphenol A, 4-substituted-2,2,6,6-tetramethylpiperidines are disclosed. Compositions comprised of a mixture of octyl ethers of glucose and sucrose and those containing octadienyl ethers of sugar acids and ring-opened epoxidized octadienyl ethers are also disclosed as are telomerization processes.

Abstract: A transformation system is provided for C. tropicalis, comprising constructs and microorganisms, as well as methods for preparing constructs and microorganisms, and transforming microorganisms. Particularly, a yeast transformation system comprising auxotrophic hosts which are auxotrophic in either an amino acid, purine or pyrimidine pathways and employ DNA constructs comprising genes encoding biosynthetic enzymes which functionally complement the auxotrophies to prototrophies.

Abstract: The aqueous paste contains an alkyl glucoside as non-ionic surfactant and an .alpha.-sulfofatty acid disalt as anionic surfactant; a thickener, for example carboxymethy cellulose, may also be present for adjusting viscosity. The paste-form detergent is produced by mixing concentrated aqueous pastes of the surfactants and, optionally, the thickener, the pH optionally being adjusted to a substantially neutral value by addition of a regulator. The paste-form detergents are suitable both for the washing of laundry and for the washing of hard surfaces, for example dishes.

Abstract: The invention relates to aqueous preparations of acid-catalyzed melamine resins and/or urea-formaldehyde condensates which contain an addition of zeolite NaA and/or hydroxysodalite to increase their usefulness. The preparations in question are particularly suitable for use in the stabilization of rock and/or plugging of cavities, for example in tunneling and mining. Accordingly, the invention also relates to a process for stabilizing rock, for example in tunneling and mining, by injection of corresponding preparations together with an acidic catalyst.

Abstract: An improved process for recovery of precious metals such as gold or silver using novel ion exchange resins having aryl guanidyl functionality from aryl guanidine compounds having a pKa at 25.degree. C. less than 13 and preferably less than 12. The resins have improved elution properties compared to known guanidine reagents using caustic eluant solutions, particularly improved eluant solutions such as a mixture of sodium hydroxide and sodium benzoate.

Abstract: Alkadienyl ethers are prepared by the telomerization of conjugated dienes with polyols by continuous addition of the alkadiene to a reaction mixtue comprised of the polyol, secondary alcohol solvent, a portion of the alkadiene to be added, and low palladium catalyst concentration.

Abstract: The invention relates to a process for the production of (meth)acrylic acid esters of polyhydric alcohols by reaction thereof with acrylic acid and/or methacrylic acid in the presence of acidic esterification catalysts with addition of polymerization inhibitors to the reaction mixture. The new process is characterized in that, where unsubstituted phenolic compounds are used as inhibitors, the esterification reaction is carried out with addition of active carbon to the reaction mixture. The preferred inhibitor is hydroquinone. In addition, the esterification reaction is preferably carried out in the absence of liquid solvents and/or azeotropic entraining agents.

Abstract: A process for recovery of metal values from a mixed metal chloride containing leach solution by contacting the leach solution with a water immiscible solution of a complexing agent selective for the neutral chloride of the metal to be recovered and a chelating agent having affinity for the cation of the metal to be recovered. The chloride ion is washed from the water immiscible solution by contact with a chloride ion washing solution. The water immiscible solution containing the chelated metal ion is stripped with an aqueous stripping solution. The metal is recovered from the aqueous stripping solution.

Abstract: This invention concerns polyiminoethers of general formula (I) in which A is an aliphatic, aromatic or araliphatic group containing 4 to 40 carbon atoms and n free valencies at various carbon atoms, x may assume values of 0 to 40, n has a value of 2, 3 or 4, Z is either a direct bond or the group CR.sup.5 R.sup.6, the substituents R.sup.1 to R.sup.6 independently of one another are H, alkyl or aryl containing up 8 carbon atoms, the substituent R.sup.7 is hydrogen, methyl or ethyl and Q is a phenylene group, which may be substituted by one or two methyl groups, or the group --CHR--M--, where R is selected from the group consisting of H, alkyl or alkenyl and M is selected from the group consisting of alkylene, alkenylene, arylene and alkarylene, and the parts R and M of the molecule independently of one another contain 0 to 12 carbon atoms and, in addition, may be substituted by a C.sub.1-3 alkoxy group. These compounds are made from polyisocyanates of formula A(NCO).sub.

Abstract: Substantially water-insoluble, oleophilic mono- and/or polyfunctional alcohols of natural and/or synthetic origin which have flash points of at least 80.degree. C., or corresponding solutions of mono- and/or polyhydric alcohols in ecologically acceptable water-insoluble oils as the dispersed oil phase of water-based O/W-emulsion drilling fluids, which are suitable for an environmentally-acceptable development of geological formations and which, if desired, contain insoluble, finely particulate weighting agents for the formation of water-based O/W-emulsions drilling muds and/or further additives, such as emulsifiers, fluid-loss additives, wetting agents, alkali reserves and/or auxiliary substances for the inhibition of drilled rock of high water-sensitivity.

Abstract: The invention concerns a steam/water mixer with steam and water inlets, a vessel for mixing the steam and water, an outlet for passing heated water from the mixing vessel, sintered material located inside the mixing vessel between the steam inlet(s) so that the steam entering the mixing vessel can only pass through the sintered material to the water inlet or the mixing-vessel outlet, wherein packing material is disposed in the space between the sintered material and the interior wall of the mixing vessel.

Abstract: A carrier strip in the form of a nonwoven, woven or knitted fabric made from natural and/or synthetic fibres, for use with foaming detergents, is loaded with antifoam active chemical substances. As a result of its compact packaging and ease of handling, no antifoam substances are released prior to use, prior to contact between the carrier and detergents. To this end, the folded carrier is packed in a sealed water soluble film and deploys its total surface only on contact with the detergents.