Abstract: The invention relates to a process for the preparation of SnS2 and comprises reacting SnSO4, tin(II) formate or tin(II) oxalate with sulfur under a standard atmosphere or under protective gas without addition of halide-containing substances.

Abstract: Acidic electrolyte for dip-tin-plating aluminum alloys, containing tin salts, surfactants and additives yielding halogen ions, fluorine complexes, having the optimum effective halogen content that corresponds to its maximum solubility, being added as additives yielding halogen ions.

Abstract: The invention relates to a process for the enzymatic preparation of regioselective fatty acid esters of ascorbic acid and selected fatty acid alkyl esters.Ascorbic acid and fatty acid alkyl esters are reacted in a solvent or suspending agent at reduced pressure in relation to the atmosphere and temperatures above the boiling point of the resulting alcohol of reaction.

Abstract: Block copolymers of the general average formula ##STR1## where, A=radical R.sup.1, radical D, or radical E,D=radical of the formula--R.sup.2.sub.f --O--(C.sub.2 H.sub.4-g R.sup.5.sub.g O--).sub.n (CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2-i R.sup.6.sub.i --O--).sub.m R.sup.3,and E isa) a radical of the general formula --R.sup.2.sub.f --O--(C.sub.2 H.sub.4-g R.sup.5.sub.g O--).sub.n R.sup.3 and/orb) an epoxy-functionalized alkyl substituent which may contain heteroatoms and/orc) a monohydroxylalkyl, dihydroxylalkyl, or trihydroxyalkyl substituent which may also be aromatic or branched and partially or fully etherfied or esterfied and/ord) a halogen- or pseudohalogen-substituted alkyl, aryl, or aralkyl radical which may also be branched,provided that there are two or more different polyether copolymer units in the block copolymer, the remaining variables being defined herein, are disclosed, as well as their use as surface-active substances, in particular as additives in the production of polyurethane foams.

Abstract: A method for softening nonwovens suitable for sanitary or cosmetic purposes or nonwoven polyolefin based webs whereby the organosilicone compounds are applied to the nonwoven materials.

Abstract: The present invention relates to silicone poly(meth)acrylates, to a process for their preparation from alkoxysiloxanes and hydroxy-functional poly(meth)acrylates and to their use as an additive in coatings, especially as an antigraffiti additive.

Abstract: The invention relates to transparent sunscreen gels comprising(a) silicone oil(b) polyoxyalkylene-organpolysiloxanes of the general formula (I) ##STR1## where R is an alkyl radical or a hydrogen radical,n=10 to 200,m=1 to 25 ando=1 to 100 with the proviso that, in the average molecule, o.gtoreq.m and 3o<n,p=7 to 17, andthe molar mass of the residue (C.sub.2 H.sub.4 O--).sub.x --(C.sub.3 H.sub.6 O--).sub.y R is from about 250 to about 2000, where x and y are chosen such that the weight ratio of oxyethylene groups to oxypropylene groups is from 100:0 to about 20:80,(c) water,(d) a component chosen from alcohols and/or polyols and(e) at least one UV absorber soluble in the aqueous or in the oily phase.

Abstract: The invention relates to emulsifier mixtures for preparing water-soluble polymers by inverse emulsion polymerization of corresponding monomers or monomer mixtures, to a process for preparing the water-soluble polymers, and to the monomer/water-in-oil emulsions thus obtained. The emulsifier mixture comprises glycerol monooleate and one or more diacetyltartrates of fatty acid glyceride.

Abstract: An aqueous, flowable preparation contains 5 to 30% by weight of a mixture of betaines, which consists of 15 to 60% by weight of betaines based on fatty acid amides of fatty acids with 8 to 18 carbon atoms, 85 to 40% by weight of betaines based on polymer acid amides; and 95 to 70% by weight of water, alkali salts and optionally conventional additives, such as solubilizers, preservatives, etc. The preparation, optionally after admixture with other surfactants, is suitable particularly as detergents and cleaning agents for personal grooming, as auxiliaries in the textile industry and as cleaning agents for technical purposes.

Abstract: The invention relates to organosilanes and organopolysiloxanes which contain 2-oxazolidinone groups, where the oxazolidinone group is linked by the ring carbon atom C-4 or C-5 via a spacer to the silane or siloxane and the spacer is connected via a hydrolysis-stable Si--C bond to the silane or siloxane, their use as surface-active substances and also their use for preparing organosilanes and organopolysiloxanes containing amino or carbamido groups.

Abstract: A defoamer emulsion, based on organofunctionally modified polysiloxanes, is obtained by mixing one or several more closely defined organofunctionally modified siloxanes and, optionally, finely divided silica, and emulsifying the mixture by means of a low-shear stirrer with water which contains a hydrophilic, organofunctionally modified polysiloxane.

Abstract: The invention relates to compound antifoams comprising alkoxylated partial esters--using from 3 to 60 mol of propylene oxide with or without from 1 to 10 mol of styrene oxide and/or from 1 to 10 mol of butylene oxide--of oligoglycerols, obtainable by condensation of 2 to 20 glycerol molecules, with C.sub.8 to C.sub.22 fatty acids and inorganic or organic solids for defoaming polymer dispersions and aqueous coating systems.

Abstract: The invention relates to a release agent and lubricant for rubber moldings, especially radiator hoses, which comprises a polyether which is liquid at room temperature, has a viscosity from 400 to 2000 mPas and is obtained by addition reaction of ethylene oxide with oligo- and polyglycerols, individually or in a mixture as initial alcohols, in which reaction from 3 to 15 mol of ethylene oxide are added on per hydroxyl group.

Abstract: The invention relates to the use of polysiloxane-polyoxyalkylene copolymers of the general formula I ##STR1## as additives in the production of polyurethane foams.

Abstract: .alpha., .omega.-polymethacrylate glycols of the general formula ##STR1## are prepared and a method for their synthesis and their use as only or partial glycol component for the preparation of polyesters and polyurethanes and for the modification of alkyd and epoxide resins are described.

Abstract: The invention relates to the use of silicone-polyether copolymers of the formula I ##STR1## as surface-active substances in the production of high-resilience polyurethane foams.

Abstract: The invention relates to a process for preparing .alpha.,.omega.-C.sub.4 -C.sub.20 -alkenols by catalytic monodehydration of .alpha.,.omega.-alkanediols over a catalyst system comprising the combination of aluminum phosphate and barium phosphate. The gas-phase dehydration which occurs over this catalyst at temperatures of from 300 to 500.degree. C. advantageously combines selectivity with a high space-time yield while simultaneously enabling a high throughput over the catalyst.

Abstract: Oraganopolysiloxanes of the general formula ##STR1## where R.sup.1 =identical or different aliphatic or aromatic hydrocarbon radicals,R.sup.2 =CH.sub.2 CH.sub.2 O(CR.sup.4 R.sup.5).sub.x OC(O)CR.sup.6 .dbd.CHR.sup.7, whereR.sup.4, R.sup.5, R.sup.6 and R.sup.7can be identical or different radicals and are each a H or alkyl radical, branched or unbranched, having up to a total of 6 C atoms and x has a value from 3 to 11, where --(CR.sup.4 R.sup.5)-- can also be a cyclic aliphatic or aromatic radical,R.sup.3 =R.sup.2 or R.sup.1,a=0 to 50 andb=0 to 500,but at least one radical R.sup.2 is attached terminally and/or laterally.

Abstract: The invention relates to a process for producing foamable material articles, to the compacted semifinished product obtainable in this way, to the use of the semifinished product for foaming a closed-cell metal article, and to the closed-cell metal articles obtained in this way. The mixtures of the foamable metal articles are produced from at least one metal powder and one gas-producing blowing agent and compacted to a semifinished product, wherein a gas-producing blowing agent comprising magnesium hydride is employed.

Abstract: X-ray amorphous and nanocrystalline elemental metal powders of groups IB to VIIIB of the Periodic Table are prepared by reacting halides of these metals with alkali metal hydrides or alkaline earth metal hydrides in an organic solvent with continual milling.