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.

Processes for stabilizing toluenediamine residues are disclosed. These processes include adding a low viscosity, low boiling liquid to a toluenediamine residue composition to form a blend, and optionally, continuously monitoring the viscosity of the blend during addition of the low viscosity, low boiling liquid. The low viscosity, low boiling liquid may be added at 5% to 30% by weight based on the total weight of the blend. Further, the low viscosity, low boiling liquid may be added so that the blend has a viscosity of 10,000 cP or less throughout the temperature range of 40° C. to 95° C. Blends of toluenediamine residue compositions and low viscosity, low boiling liquids such as water, and methods of their use as a fuel are also disclosed.

Processes for stabilizing toluenediamine residues are disclosed. These processes include adding a low viscosity, low boiling liquid to a toluenediamine residue composition to form a blend, and optionally, continuously monitoring the viscosity of the blend during addition of the low viscosity, low boiling liquid. The low viscosity, low boiling liquid may be added at 5% to 30% by weight based on the total weight of the blend. Further, the low viscosity, low boiling liquid may be added so that the blend has a viscosity of 10,000 cP or less throughout the temperature range of 40° C. to 95° C. Blends of toluenediamine residue compositions and low viscosity, low boiling liquids such as water, and methods of their use as a fuel are also disclosed.

Processes for stabilizing toluenediamine residues are disclosed. These processes include adding a low viscosity, low boiling liquid to a toluenediamine residue composition to form a blend, and optionally, continuously monitoring the viscosity of the blend during addition of the low viscosity, low boiling liquid. The low viscosity, low boiling liquid may be added at 5% to 30% by weight based on the total weight of the blend. Further, the low viscosity, low boiling liquid may be added so that the blend has a viscosity of 10,000 cP or less throughout the temperature range of 40° C. to 95° C. Blends of toluenediamine residue compositions and low viscosity, low boiling liquids such as water, and methods of their use as a fuel are also disclosed.

Provided is a method for manufacturing diisocyanate and an optical lens in which, during the manufacture of diisocyanate from diamine via diamine hydrochloride, use is made of an aqueous hydrochloric acid solution and an organic solvent instead of hydrogen chloride gas and solid-phase triphosgen instead of phosgen gas while reaction conditions are controlled, whereby the diisocyanate of high quality can be manufactured at excellent yield, with the causation of less environmental problems.

Provided is a method for manufacturing diisocyanate and an optical lens in which, during the manufacture of diisocyanate from diamine via diamine hydrochloride, use is made of an aqueous hydrochloric acid solution and an organic solvent instead of hydrogen chloride gas and solid-phase triphosgen instead of phosgen gas while reaction conditions are controlled, whereby the diisocyanate of high quality can be manufactured at excellent yield, with the causation of less environmental problems.

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.

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.

The present disclosure concerns processes for regenerating organocations from perchlorate-rich waste products, more specifically transformation of water-insoluble organocation-perchlorate salt, originating from perchlorate-removal water treatment processes, into a water-soluble perchlorate salt for reusing same.

The present disclosure concerns processes for regenerating organocations from perchlorate-rich waste products, more specifically transformation of water-insoluble organocation-perchlorate salt, originating from perchlorate-removal water treatment processes, into a water-soluble perchlorate salt for reusing same.