Abstract: A method of preparing a transparent zinc carbonate is disclosed. The method includes dissolving a zinc source in aqueous ammonium carbonate, removing metal impurities from the solution, injecting CO2 into the zinc ammonia carbonate solution, heating a resulting slurry to a temperature of about 100° C. or more until the ammonia is substantially absent from the solution, and drying the resulting zinc carbonate at a temperature from around 150° C. to 300° C. for a length of time that removes water, but retains a significant part of the CO2 content. The ammonia and the carbon dioxide are present in the aqueous solution in a ratio by moles or by weight effective to dissolve the zinc. A nano zinc oxide can be prepared by drying the zinc carbonate at a temperature of 300-400° C. for a length of time sufficient to remove substantially all of the CO2.

Abstract: A method of preparing a transparent zinc carbonate is disclosed. The method includes dissolving a zinc source in aqueous ammonium carbonate, removing metal impurities from the solution, injecting CO2 into the zinc ammonia carbonate solution, heating a resulting slurry to a temperature of about 100° C. or more until the ammonia is substantially absent from the solution, and drying the resulting zinc carbonate at a temperature from around 150° C. to 300° C. for a length of time that removes water, but retains a significant part of the CO2 content. The ammonia and the carbon dioxide are present in the aqueous solution in a ratio by moles or by weight effective to dissolve the zinc. A nano zinc oxide can be prepared by drying the zinc carbonate at a temperature of 300-400° C. for a length of time sufficient to remove substantially all of the CO2.

Abstract: A latex or natural rubber composition or formulation, latex or rubber products made using the same, and methods of preparing a vulcanized rubber and latex or natural rubber products are disclosed. The composition/formulation includes latex or natural rubber, 0.1-5 phr of a vulcanization activator, and 0.5-10 phr of one or more accelerators and/or additional activators. At least one accelerator and/or additional activator is a nanocomposite zinc oxide. The method includes. mixing a source of the latex or rubber with a vulcanization activator and one or more nanocomposite zinc oxides in a tank or vessel to form a latex or rubber formulation, dipping or at least partially immersing one or more molds or formers in the latex or rubber formulation to form a latex or rubber coating thereon, and curing the latex or rubber coating to vulcanize the latex or rubber coating. The vulcanized latex product is strong and has antimicrobial properties.

Abstract: Zinc carboxylate clays and zinc carboxylate organoclays, methods for their preparation, and compositions containing the same are disclosed. The methods comprise either mixing a zinc clay composition with a carboxylic acid, or mixing a carboxylic acid with a zinc ammonia complex solution, then combining the resulting zinc carboxylate salt with a slurry or suspension of a cation-exchangeable clay, to prepare the zinc carboxylate clay. These clays can be further intercalated with quaternary ammonium salts to make zinc carboxylate organoclays. The present clays may be used in compositions and/or as additives in rubber and plastic formulations and products and in catalyst formulations.

Abstract: Zinc carboxylate clays and zinc carboxylate organoclays, methods for their preparation, and compositions containing the same are disclosed. The methods comprise either mixing a zinc clay composition with a carboxylic acid, or mixing a carboxylic acid with a zinc ammonia complex solution, then combining the resulting zinc carboxylate salt with a slurry or suspension of a cation-exchangeable clay, to prepare the zinc carboxylate clay. These clays can be further intercalated with quaternary ammonium salts to make zinc carboxylate organoclays. The present clays may be used in compositions and/or as additives in rubber and plastic formulations and products and in catalyst formulations.

Abstract: Organic zinc salts and mixtures thereof, organic zinc salt coated particles, methods of preparing organic zinc salts and organic zinc salt coated particles, and various applications of such coated particles, including applications in rubber, other polymeric materials, and pesticides and/or fungicides are disclosed.

Abstract: Organic zinc salts and mixtures thereof, organic zinc salt coated particles, methods of preparing organic zinc salts and organic zinc salt coated particles, and various applications of such coated particles, including applications in rubber, other polymeric materials, and pesticides and/or fungicides are disclosed.

Abstract: Sodium ammonium phosphate and ammonium chloride are prepared from an ammonium phosphate (e.g., diammonium phosphate) and sodium chloride in water. The crystallization of sodium ammonium phosphate may take place between -10.degree. C. to 40.degree. C. Using the present invention, technical grade sodium ammonium phosphate and ammonium chloride can be produced from fertilizer grade diammonium phosphate.