Abstract: The present invention relates to a composition suitable for production of rigid polyurethane or polyisocyanurate foams, said composition comprising at least one isocyanate component, at least one polyol component, at least one foam stabilizer, at least one urethane and/or isocyanurate catalyst, optionally water and/or blowing agent, and optionally at least one flame retardant and/or further additives, which comprises at least two different varieties 1 and 2 of polyether siloxanes as foam stabilizers, and to the use of this composition for production of foamed polyurethane or polyisocyanurate materials, preferably rigid foams.

Abstract: A monoallophanate can be used in paint or adhesive compositions. The monoallophanate has the formula 1: where R, R1-R6 are each independently identical or different hydrocarbyl radicals having 1-8 carbon atoms, which may be branched or cyclic, or else may be integrated together to form a cyclic system, and m and n are each independently 0-2.

Abstract: A multilayer film containing layers of polyamide and polyester, suitable as a back cover for a photovoltaic module is provided. The film comprises, in the order listed: a) a layer which comprises at least 35% by weight of polyamide; c) a layer which comprises at least 35% by weight, of a thermoplastic polyester; and e) a layer which comprises at least 35% by weight of polyamide; wherein the layers a) and e) further comprise 0.1 to 60% by weight, of a polyamine-polyamide graft copolymer, or the layer c) further comprises 0.1 to 30% by weight of polyamine-polyamide graft copolymer. The polyamine-polyamide graft copolymer comprises as copolymerized monomers: a polyamine having at least 4 nitrogen atoms and at least one polyamide-forming unit selected from the group consisting of a lactam, an ?-aminocarboxylic acid and an equimolar combinations of a diamine and a dicarboxylic acid. In another embodiment, adhesion promoting layers are placed between the layers.

Abstract: A process for fine purification of isophoronediamine (IPDA), including producing IPDA by aminating hydrogenation of isophorone nitrile in the presence of at least ammonia, hydrogen, a a hydrogenation catalyst and optionally further additions to obtain a crude IPDA, and subjecting the crude IPDA to a fine purification via two vacuum distillation columns, wherein in the first vacuum distillation column the removal of any remaining relatively low-boiling byproducts is effected and in the second vacuum distillation column the IPDA is obtained in pure form as tops and thus separated from the organic residues, and wherein the first vacuum distillation column has vacuum distillation column has a partial condenser fitted to it.

Abstract: The invention relates to a polyglycerol partial ester obtainable by esterification of a polyglycerol with a carboxylic acid mixture comprising at least one polyhydroxycarboxylic acid of a hydroxycarboxylic acid having 8 to 32 carbon atoms, at least one short-chain dicarboxylic acid having 2 to 16, preferably 6 to 14, particularly preferably 8 to 12, carbon atoms, at least one long-chain dicarboxylic acid having 24 to 44, preferably 30 to 40, particularly preferably 34 to 38, carbon atoms, and at least one fatty acid selected from linear, unsaturated and branched, saturated fatty acids having 14 to 24 carbon atoms, to a method for preparing polyglycerol partial esters, and to the use of corresponding polyglycerol partial esters as W/O emulsifier.

Abstract: An alkoxysilane-functionalized and allophanate-functionalized coating material including a) a binder component of 10-99 wt % of at least one reaction product of I. and II. wherein I includes A) at least one alkoxysilane-containing monourethane A) of the formula 1 Rn(OR1)3-nSi—R2—NH—(C?O)—OR3 wherein R, R1, R2 and R3 represent hydrocarbon radicals having 1-8 carbon atoms, and n represents 0-2, and B) at least one diisocyanate B), and II includes the subsequent reaction of C) with at least one diol and/or polyol C), in a ratio of NCO groups of reaction product I to OH groups of the diol and/or polyol II. C) of 1.0:1.5 to 1.0:0.6; b) 1-90 wt % of at least one further binder component distinct from a) a hydroxyl-containing or amino-containing binder component, c) 0-50 wt % of at least one polyisocyanate having an NCO functionality of at least 2, d) 0-5 wt % of at least one catalyst, wherein components a)-d) add up to 100 wt %.

Abstract: The present invention relates to alkoxysilane-functionalized and allophanate-functionalized urethanes, methods for the preparation thereof, coating compositions comprising these and to the use thereof.

Abstract: Process for Pd-catalyzed hydroxycarbonylation of diisobutene:acetic acid/diisobutene ratio.

Abstract: A polyaddition compound and/or a salt thereof is obtainable by the reaction of epoxy resin based on at least one diglycidyl ether of Formula (I) wherein R=a divalent aliphatic or monocyclic aromatic or bicyclic aromatic radical or mixtures thereof; with at least one polyether alcohol of Formula (II) R1-[OEt]n-[OPr]m-[OBu]s-[OSO]r-OH??Formula (II) wherein R1=independently identical or different, linear or branched, optionally aromatic hydrocarbyl radicals having 1 to 18 carbon atoms, [OEt]=ethylene oxide radical, [OPr]=propylene oxide radical, [OBu]=butylene oxide radical, [OSO]=styrene oxide radical, n=0 to 100, m=0 to 50, s=0 to 20, and r=0 to 3, with the proviso that n+m+s+r=3-103, and with at least one compound containing at least one functional group selected from sulfate groups, sulfonate groups, carboxylate groups and phosphate groups.

Abstract: Process for Pd-catalyzed hydroxycarbonylation of diisobutene: ligand/Pd ratio.

Abstract: Process for Pd-catalyzed hydroxycarbonylation of diisobutene:sulfuric acid/ligand ratio.

Abstract: Process for Pd-catalyzed hydroxycarbonylation of diisobutene: Effect of solvent

Abstract: Process for the direct conversion of alkenes to carboxylic acids.

Abstract: Process for Pd-catalyzed hydroxycarbonylation of diisobutene: ratio of 3,5,5-trimethylhexanoic acid/H2O.

Abstract: Process for the direct conversion of diisobutene to a carboxylic acid.

Abstract: There is provided a method of producing aminohexanoic acid and/or aminohexanoic acid ester from synthesis gas, the method comprising: A. contacting the synthesis gas with at least one bacteria capable of carrying out the Wood-Ljungdahl pathway and the ethanol-carboxylate fermentation to produce hexanoic acid; and B. contacting the hexanoic acid with a genetically modified cell to produce aminohexanoic acid and/or aminohexanoic acid ester, wherein the genetically modified cell has an increased activity, in comparison with its wild type, of alkane monooxygenase, alcohol dehydrogenase, and ?-transaminase.

Abstract: The present invention is related to a recombinant microorganism optimized for the fermentative production of methionine and/or its derivatives, wherein in said recombinant strain, the methionine efflux is enhanced by overexpressing the homologous logous genes of ygaZ and ygaH genes from Escherichia coli. It is also related to a method for optimizing the fermentative production of methionine or its derivatives comprising the steps of: a. culturing a recombinant microorganism wherein in said microorganism, the methionine efflux is enhanced by overexpressing the ygaZH homologous genes of ygaZ and ygaH genes from Escherichia coli, in an appropriate culture medium comprising a fermentable source of carbon and a source of sulphur, and b. recovering methionine and/or its derivatives from the culture medium.

Abstract: A coating or plastics formulation contains a reaction product of at least one alkoxysilane-containing isocyanurate of the formula (I) with at least one hydrophilizing agent of the formula BOH which has at least one OH group, wherein R1, R2 and R3 in each case independently of one another are a linear or branched and/or cyclic C1-C8 alkylene radical, R?, R? and R?? in each case independently of one another are a linear or branched and/or cyclic C1-C8 alkyl radical, and B is a hydrophilic radical.

Abstract: The invention provides an adhesion promoter composition comprising at least one polymer A selected from at least one epoxy resin-phenol resin precondensate, a mixture of at least one epoxy resin-phenol resin precondensate and epoxy resins, a mixture of epoxy resins and phenol resins, polyamide resins and mixtures thereof, and at least one copolyamide-based hotmelt adhesive. Additionally described is a primer composition comprising at least one polymer B selected from saturated polyester resins, epoxy-phenol resin precondensates, mixtures of epoxy resins and phenol resins, and mixtures thereof, at least one crosslinker resin selected from the group consisting of melamine resins, blocked isocyanate resins and mixtures thereof, at least one catalyst, and at least one copolyamide-based hotmelt adhesive.

Abstract: Polymers can be prepared from monomers comprising laurolactam, by a process including a. Beckmann rearrangement of cyclododecanone oxime to give laurolactam in the presence of a Beckmann rearrangement catalyst, b. removal of impurities from the laurolactam to obtain purified laurolactam, and c. polymerization of monomers comprising purified laurolactam. For avoidance of discolouration or yellowing under ageing conditions, prior to the polymerization, polycyclic substances containing 24 carbon atoms and at least one heteroatom selected from oxygen and nitrogen and having a molar mass between 300 and 380 g/mol are limited to 500 ppm, based on laurolactam.