Abstract: The present invention relates to supported catalysts which are composed of titanium oxide hydrates coated with nanoscale gold particles. The catalysts of the present invention have increased activity over known catalysts.

Abstract: Durene diisocyanate is prepared by reacting durene with nitric acid in sulfuric acid, catalytic hydrogenation of the dinitrodurene that is formed, and phosgenation of the resultant durene diamine in a conventional manner. The intermediate products dinitrodurene and durene diamine do not have to be worked up in a complicated manner as solid products, but can be worked up in dissolved form. The intermediate products dinitrodurene and durene diamine do not have to be isolated and purified in a complicated manner. but can be processed directly after preparation. Another advantage of this process is that only a single organic solvent need be used for the overall preparation process. Separation and re-use of spent acid in the conversion of durene with nitric acid also renders the process of the present invention significantly less environmentally harmful than the known processes of the prior art.

Abstract: The invention relates to a process for the preparation of polyether polyols by means of double metal cyanide (DMC) catalysts, in which the induction phase is shortened markedly. By continuous dispensing of an alkylene oxide into the starter-catalyst mixture it is possible to achieve a substantial shortening of the induction phase by comparison with the batch-wise activation.

Abstract: This invention relates to a process for the production of long-chain polyether polyols without working up, in which oligomeric, alkoxylated starter compounds having molecular weights of 200 to 1000 are first obtained by catalysis with perfluoroalkylsulfonates of the metals of group III A of the periodic system of elements (in accordance with the IUPAC convention of 1970) from low molecular weight starters by reaction with alkylene oxides at reaction temperatures of 80 to 200° C. and catalyst concentrations of 5 to 200 ppm, which oligomeric, alkoxylated starter compounds are then converted without working up and removal of the catalyst by means of highly active DMC catalysts at a catalyst concentration of 30 ppm or below, relative to the quantity of polyether polyol to be produced, by reaction with alkylene oxides into higher molecular weight, long-chain polyether polyols.

Abstract: The invention is directed to a process for preparing a polyether polyol by the polyaddition of an alkylene oxide on to a starter compound containing active hydrogen atoms under basic catalysis in the presence of phosphonium cations.

Abstract: This invention relates to new double metal cyanide (DMC) catalysts, a process for the preparation of these DMC catalysts, and to a process for the production of polyether polyols by the polyaddition of alkylene oxides to starter compounds which comprise active hydrogen atoms, wherein the catalyst comprises a) one or more double metal cyanide compounds, b) one or more organic complexing ligands, and c) one or more organic phosphates, organic phosphites, organic phosphonates, organic phosphonites, organic phosphinates or organic phosphinites. The catalysts according to the invention exhibit a considerably increased activity for polyether polyol production.

Abstract: The present invention relates to mixtures prepared from (A) at least one linear, branched, or cyclic monomeric organosilane having at least two silicon atoms with hydrolyzable and/or condensation-crosslinking groups in which the silicon atoms are bonded to one another through at least one carbon atom in a linking unit, and (B) at least one boron- and/or aluminum-containing compound having the formula (I) RxM(OR′)3−x  (I)  wherein M is Al or B, x is 0, 1, or 2, R is C1-C6-alkyl, C6-C12-aryl, or (O)½, with the proviso that if R is (O)½, then the compound of the formula (I) is a chain when x is 1 and a cyclic or cage-form compound when x is 2, and each R′ is independently H, C1-C10-alkyl, or C6-C12-aryl. The invention further relates to hybrid materials prepared from such mixtures and to coatings produced therefrom.

Abstract: Closed containers with safety caps having a push and twist opening system are loosened by compressing the container between the cap gripping means and the base of the apparatus described more fully herein, and rotating the base in a clockwise direction.

Abstract: An organic isocyanate or mixture of isocyanates is treated with at least one high molecular weight ester of phosphoric acid corresponding to a specified formula to remove chlorine compounds. The isocyanates which are purified in this manner are useful for the production of coatings, polyurethane moldings and chemical intermediates.

Abstract: The invention relates to novel double-metal cyanide catalysts for the preparation of polyether polyols by polyaddition of alkylene oxides to starter compounds containing active hydrogen atoms, wherein the catalyst contains a) double metal cyanide compounds, b) organic complex ligands other than c), and c) glycoside. The catalysts according to the invention have greatly increased activity in the preparation of polyether polyols.

Abstract: The invention relates to novel double metal cyanide (DMC) catalysts for the preparation of polyether polyols by polyaddition of alkylene oxides to starter compounds containing active hydrogen atoms, wherein the catalyst contains a) double metal cyanide compounds, b) organic complex ligands other than c), and c) polyalkylene glycol sorbitan esters. The catalysts according to the invention have greatly increased activity in the preparation of polyether polyols.

Abstract: The present invention is directed to a process and corresponding device for incorporating expanded graphite in a gentle manner into a polyurethane reactive mixture and, on the other hand, processes and corresponding means for reducing or preventing sedimentation of the expanded graphite in the liquid.

Abstract: The present invention relates to highly active, substantially crystalline double metal cyanide (DMC) catalysts, a process for the preparation of these double metal cyanide catalysts, a process for producing polyether polyols by the polyaddition of alcohol ethers onto starter compounds containing active hydrogen atoms from these DMC catalysts, and to the polyether polyols produced by this process. The DMC catalysts of the invention comprise a) double metal cyanide compounds, b) organic complexing ligands, and c) functionalized polymers. These catalysts exhibit increased activity in the process for the production of polyether polyols.

Abstract: Closed cell rigid polyurethane foams are produced by reacting a) a polyol component with b) a polyisocyanate having an NCO content of from about 20 to about 48% by weight.

Abstract: An in-line spectrometric method for determining the distillation residue content in an opaque, dark-colored mixture containing an isocyanate and tar-like materials (residue) during the isocyanate production process. A probe capable of directing light at wavelengths of from 1050 to 2150 nm is inserted in a stream of the residue-containing mixture and light is transmitted through the stream. Light absorption data is collected and a near-infrared spectrum is generated. The residue content is then determined using a chemometric model. Knowledge of the residue content makes it possible to control and optimize the distillation process.

Abstract: The present invention is directed to an agitator-free mixing head and a method for agitator-free production of a reaction mixture from an isocyanate and a higher-viscous polyol formulation, wherein both constituents are fed to a mixing zone and mixed with each other therein, whereby a polyol formulation with a viscosity of at least 3000 mPa.s is fed at low pressure into the mixing zone and at least two flows of low-viscosity constituents (isocyanate and optionally low-viscous polyol) are injected into the flow of high-viscous polyol formulation at high pressure.

Abstract: The invention relates to new, improved double metal cyanide (DMC) catalysts for preparing polyetherpolyols by polyaddition of alkylene oxides to starter compounds containing active hydrogen atoms, wherein the catalyst contains a double metal cyanide compound, an organic coordination ligand and 5 to 80 wt. %, with respect to the amount of catalyst, of an ethylene oxide polyether with a number average molecular weight greater than 500. The new, improved catalysts have a greatly increased reactivity for polyetherpolyol preparation.

Abstract: An isocyanate-reactive composition containing a blowing agent that is generally a gas at ambient temperature and pressure which is storage stable is produced by including a phenol or alkylphenol having at least one phenolic hydroxyl group in the isocyanate-reactive composition in an amount sufficient to promote the solubility of the blowing agent. The isocyanate-reactive composition may be stored at ambient conditions rather than under pressure. The isocyanate-reactive composition containing blowing agent may be used to produce foams having good physical properties after storage at ambient temperature and pressure for periods as long as 3 months.

Abstract: The invention is directed to new double metal cyanide (DMC) catalysts, a process for the preparation of these catalysts, and to a process for the preparation of polyetherpolyols by the polyaddition of alkylene oxides to starter compounds which contain active hydrogen atoms, wherein the catalyst comprises the novel double metal cyanide (DMC) catalyst of the present invention. These new double metal cyanide (DMC) catalysts comprise a) one or more double metal cyanide compounds, b) one or more organic complex ligands, and c) one or more cyclodextrins, with the proviso that b) and c) are different compounds. The catalysts of this invention exhibit greatly increased activity during preparation of a polyetherpolyol.