Abstract: The invention relates to a process for the preparation of a cyclodextrin/alpha-lipoic acid complex, wherein in a first step, an alpha-lipoic acid and a cyclodextrin are dissolved in an aqueous alkaline solution having a pH above pH 7, and in a second step an acid is added to lower the pH of the solution to a pH below pH 7.

Abstract: The invention relates to a process for the preparation of a cyclodextrin/alpha-lipoic acid complex, wherein in a first step, an alpha-lipoic acid and a cyclodextrin are dissolved in an aqueous alkaline solution having a pH above pH 7, and in a second step an acid is added to lower the pH of the solution to a pH below pH 7.

Abstract: A polycrystalline granulated silicon is made of particles which have a density of greater than 99.9% of the theoretical solid density and therefore have a pore content of less than 0.1% and have a surface roughness Ra of less than 150 nm.

Abstract: A process for preparing organopolysiloxane compositions (A) having a viscosity measured at 25° C. of at least 500 Pa·s., wherein organopolysiloxanes (O) and fillers (F) are mixed and kneaded in a first process stage in a kneading cascade having at least two kneading chambers arranged in series adjacent one another, each containing kneading tools having parallel axes and capable of being driven in co-rotating or counter-rotating directions, the chambers connected to one another by means of openings through which material can pass in a direction transverse to the axes of the kneading tools, with the first kneading chamber having a feed opening and the last kneading chamber having a discharge opening, to give raw mixtures, and the raw mixtures are kneaded and degassed in a reciprocating kneader in a second process stage.

Abstract: Cosmetic or dermatological preparations are based upon vitamin F, and the vitamin F is present in the form of a complex with a cyclodextrin which includes alpha-cylodextrin, beta-cyclodextrin, and gamma-cyclodextrin.

Abstract: A crusher for producing fine silicon fragments for semiconductor or solar applications from silicon fragments suitable for semiconductor or solar applications, comprises a plurality of crushing tools, the crushing tools having a surface made from a hard, wear-resistant material, wherein the crusher has a comminution ratio e of from 1.5 to 3.

Abstract: Fusion protein including a fusion part and a protein of interest, the combination of the two proteins leading to the fusion protein being secreted into a supernatant of a bacterial host with the protein of interest being present in its correct three-dimensional structure. Nucleic acid including a sequence coding for a fusion protein, the sequence including: —F—Asm—Rn—Y—, where F is a nucleic acid sequence coding for an amino acid sequence which allows secretion of a protein encoded by Y into a fermentation medium, As is a chemical bond or a nucleic acid sequence comprising a codon, m is an integer from 0–10, R is a chemical bond or an arginine codon, n is 0 or 1, and Y is a nucleic acid sequence coding for a protein of interest. Processes therefor.

Abstract: Shaped bodies comprise addition-crosslinked silicone elastomers crosslinked in the presence of at least one rhodium or iridium catalyst or mixtures of both catalyst types. The shaped bodies may be made transparent and colorless and are well suited for use as food and baking molds in the food industry. The catalyzed addition-crosslinkable components display excellent pot life as well as good high temperature cure.

Abstract: Addition-crosslinking silicone compositions comprise (A) diorganopolysiloxanes R1aR2bSiO(4?a?b)/2 wherein R1 is hydroxyl or a monovalent C1-20 hydrocarbon radical free of aliphatic unsaturation, R2 is a monovalent aliphatically unsaturated C1-10 hydrocarbon radical, a has a value from 1.0 to 2.0, b is 0.0003 to 2, and 1.5<(a+b)<3.

Abstract: A laminated glass comprises: A) at least one layer consisting of inorganic or organic glass and B) at least one layer consisting of a polysiloxane-urea copolymer which is obtained by reacting a mixture of linear polysiloxanes of general formula Q-T-SiR2O—(SiR2O)n—SiR2-T-Q and branched polysiloxanes of general formula (Q-T-SiR2O1/2)a(Q-T-SiRO2/2)b(Q-T-SiO3/2)c(R3SiO2/2)d(R2SiO2/2)c(RSiO3/2)f(SiO4/2)g with polyfunctional isocyanates. The laminates exhibit excellent moisture resistance.

Abstract: An antifoam formulations comprise (A) antifoam agent based on siloxanes and (B) branched polyether/polysiloxane copolymers comprising structural units of the formula Y[—CnH2n—(R2SiO)m—Ap—R2Si—G]x??(I) in which Y is a multivalent, optionally heteroatom-containing hydrocarbon radical, R are monovalent optionally halogenated hydrocarbon radicals, A is a radical —R2Si—R2—(R2SiO)m—, G is a monovalent radical —CfH2f-2k—Z or a divalent radical —CnH2n— bonded to a radical Y, Z —(R6)v—(OCH2CH2)a[OCH2CH(CH3)]b[OCH2CH(CH2CH3)]c—OR3, in which R3 is hydrogen, a hydrocarbon radical, or a radical R—C(O)—, R6 is a divalent hydrocarbon radical, v is 0 or 1, a, b and c are 0 or an integer between 1 and 1000, the sum (a+b+c) being from 2 to 2000, x is 3 to 10, f is 2 to 12, k is 0 or 1, n is 2 to 12, m is at least 1, and p is 0 or a positive integer, the branched polyether/polysiloxane copolymers (B) containing on average at least one group Z.

Abstract: A Process for the preparation of materials crosslinkable with elimination of alcohols to give elastomers, wherein (A) an organopolysiloxane having at least two hydroxyl groups, (B) trialkoxysilanes and/or the partial hydrolysis products thereof in an amount of at least 0.7 part by weight, based on 100 parts by weight of component (A), (C) an organosilicon compound which comprises at least one radical bonded to silicon via carbon and having basic nitrogen, (D) a tin catalyst, optionally, (E) fillers, (F) stabilizers and (G) further substances are mixed with one another, (A) and (B) forming a reaction product with elimination of alkanol, with the proviso that tin catalyst (D) is added to the component (A) or the mixture containing the reaction product thereof only when from 1 to 60% of the Si—OH groups originally present remain present.

Abstract: Heat insulation for underwater components comprises a heat-insulating molding surrounding the component and a resilient water-resistant envelope surrounding the heat-insulating molding, wherein the heat-insulating molding is a nanoporous, mesoporous or microporous material based on precipitated or pyrogenic silica, arc silica, and/or aerogel.

Abstract: A process for continuously preparing compounds containing SiOC groups, in which chlorosilane(s) are partially reacted with alcohol and optionally also with water in a prereactor, and the partial reaction product therefrom is fed to a first reaction unit comprising a column, reacted with alcohol and optionally water to give a crude product which still comprises volatile constituents, and the crude product is transferred to a second reaction unit comprising a column in which alcohol is additionally introduced, and freed there of volatile constituents, optionally in the presence of an unreactive organic solvent, the desired end product being removed at the lower end of the second reaction unit.

Abstract: Aqueous organopolysiloxane compositions containing a dispersed solid organopolysiloxane resin bearing both alkoxy and hydroxy radicals, a condensation catalyst, and a wetting agent are suitable for use as binders for the preparation of structures based on mineral fibers.

Abstract: The present invention relates to a process for adding Si-bonded hydrogen to aliphatically unsaturated compounds containing carbon-carbon multiple bonds and ether oxygen atoms in the presence of carbinol groups, wherein the reaction mixture comprises, as a further component, at least one cyclic ether.

Abstract: Crosslinkable compositions employing organosilicon compounds having at least two hydrolyzable groups, optionally a crosslinker, and optionally a compound containing basic nitrogen, include a crosslinking catalyst which is a reaction product of a phosphorus compound, a sulfur compound, and a tin compound. The compositions exhibit improved shelf life.

Abstract: Flame-retardant compositions contain peroxidically crosslinking, addition-crosslinking or condensation-crosslinking silicone rubber and at least one rhodium compound or iridium compound or mixtures of the two. The compositions exhibit increased flame retardancy as compared to similar compositions containing platinum complexes, and especially when used in conjunction with the latter, produce stable ceramic layers upon combustion.

Abstract: The invention relates to a process for the preparation of a cyclodextrin/alpha-lipoic acid complex, wherein in a first step, an alpha-lipoic acid and a cyclodextrin are dissolved in an aqueous alkaline solution having a pH above pH 7, and in a second step an acid is added to lower the pH of the solution to a pH below pH 7.

Abstract: Polyorganosiloxane compositions crosslinkable by addition of Si-bonded hydrogen to aliphatic carbon-carbon multiple bonds which have extended pot life or are preparable as storage stable one component compositions including latent catalysts of specific platinum complexes.