Patent classifications
C07C209/90
METHOD FOR PREPARING AN AMINE HYDROCHLORIDE SUSPENSION
The invention relates to a method for preparing a suspension of a hydrochloride of an organic amine, comprising the following steps of (i) initially charging at least one organic solvent in a reaction vessel to form a liquid level, (ii) adding hydrogen chloride, (iii) adding the organic amine, wherein the organic amine is added below the liquid level present in the reaction vessel and steps (ii) and (iii) are at least partly carried out simultaneously. Furthermore, the present invention also relates to a method wherein the suspension obtained after step (iii) is reacted in a step (iv) with phosgene to obtain the organic isocyanate corresponding to the organic amine used, to the corresponding organic isocyanate and to the use of the organic isocyanate for producing polyisocyanates.
METHOD FOR PREPARING AN AMINE HYDROCHLORIDE SUSPENSION
The invention relates to a method for preparing a suspension of a hydrochloride of an organic amine, comprising the following steps of (i) initially charging at least one organic solvent in a reaction vessel to form a liquid level, (ii) adding hydrogen chloride, (iii) adding the organic amine, wherein the organic amine is added below the liquid level present in the reaction vessel and steps (ii) and (iii) are at least partly carried out simultaneously. Furthermore, the present invention also relates to a method wherein the suspension obtained after step (iii) is reacted in a step (iv) with phosgene to obtain the organic isocyanate corresponding to the organic amine used, to the corresponding organic isocyanate and to the use of the organic isocyanate for producing polyisocyanates.
Organic reactions carried out in aqueous solution in the presence of a hydroxyalkyl(alkyl)cellulose or an alkylcellulose
The present invention relates to a method of carrying out an organic reaction in aqueous solution in the presence of a hydroxyalkyl(alkyl)cellulose or an alkylcellulose.
Organic reactions carried out in aqueous solution in the presence of a hydroxyalkyl(alkyl)cellulose or an alkylcellulose
The present invention relates to a method of carrying out an organic reaction in aqueous solution in the presence of a hydroxyalkyl(alkyl)cellulose or an alkylcellulose.
PROCESS FOR STABILIZATION OF AT LEAST MONOALKYL-SUBSTITUTED DIAMINOCYCLOHEXANES
A process for stabilizing monoalkyl-substituted diaminocyclohexanes, the process containing: adding a reductant and optionally water to a first composition containing a monoalkyl-substituted diaminocyclohexane and optionally water to obtain a second composition, wherein the second composition contains the reductant, the monoalkyl-substituted diaminocyclohexane and additionally at least 0.05% by weight of water based on the total weight of the second composition.
PROCESS FOR STABILIZATION OF AT LEAST MONOALKYL-SUBSTITUTED DIAMINOCYCLOHEXANES
A process for stabilizing monoalkyl-substituted diaminocyclohexanes, the process containing: adding a reductant and optionally water to a first composition containing a monoalkyl-substituted diaminocyclohexane and optionally water to obtain a second composition, wherein the second composition contains the reductant, the monoalkyl-substituted diaminocyclohexane and additionally at least 0.05% by weight of water based on the total weight of the second composition.
PROCESS FOR STABILIZATION OF AT LEAST MONOALKYL-SUBSTITUTED DIAMINOCYCLOHEXANES
A process for stabilizing monoalkyl-substituted diaminocyclohexanes, the process containing: adding a reductant and optionally water to a first composition containing a monoalkyl-substituted diaminocyclohexane and optionally water to obtain a second composition, wherein the second composition contains the reductant, the monoalkyl-substituted diaminocyclohexane and additionally at least 0.05% by weight of water based on the total weight of the second composition.
Quaternary Ammonium Compound Compositions and Methods for Making and Using Same
Quaternary ammonium compound compositions and more particularly quaternary ammonium compound compositions including greater than 25% by weight of a quaternary ammonium compound, methods for making same, fibrous structures employing same, and methods for treating fibrous structures with same are provided.
Quaternary Ammonium Compound Compositions and Methods for Making and Using Same
Quaternary ammonium compound compositions and more particularly quaternary ammonium compound compositions including greater than 25% by weight of a quaternary ammonium compound, methods for making same, fibrous structures employing same, and methods for treating fibrous structures with same are provided.
COMPLEX OF LAMELLAR INORGANIC COMPOUND AND ORGANIC COMPOUND AND METHOD OF PRODUCING THEREOF, DELAMINATED LAMELLAR INORGANIC COMPOUND AND METHOD OF PRODUCING THEREOF, INSULATING RESIN COMPOSITION, RESIN SHEET, INSULATOR, RESIN SHEET CURED PRODUCT, AND HEAT DISSIPATING MEMBER
A method of producing a complex of a lamellar inorganic compound and an organic compound includes: heat-treating a particular non-swelling lamellar inorganic compound within a pyrolysis temperature range of the non-swelling lamellar inorganic compound; and intercalating an organic compound into the non-swelling lamellar inorganic compound in a dispersion liquid in which the heat-treated non-swelling lamellar inorganic compound is dispersed in a medium, thereby inserting the organic compound into an interlamellar space of the non-swelling lamellar inorganic compound.