43 results about "Dithionate" patented technology

Antimicrobial compositions, especially those useful when applied topically, particularly to mucosal tissues (i.e., mucous membranes), including a cationic antiseptic such as biguanides and bisbiguanides such as chlorhexidine and its various salts including but not limited to the digluconate, diacetate, dimethosulfate, and dilactate salts; polymeric quaternary ammonium compounds such as polyhexamethylenebiguanide; silver and various silver complexes; small molecule quaternary ammonium compounds such as benzalkoium chloride and alkyl substituted derivatives; di-long chain alkyl (C8-C18) quaternary ammonium compounds; cetylpyridinium halides and their derivatives; benzethonium chloride and its alkyl substituted derivatives; and octenidine. The compositions can also include an enhancer component, a surfactant, a hydrophobic component, and / or a hydrophilic component. Such compositions provide effective topical antimicrobial activity and are accordingly useful in the treatment and / or prevention of conditions that are caused, or aggravated by, microorganisms (including viruses).

The invention provides a method for producing manganese sulfate from manganese oxide ores. The method comprises the steps of mixing the manganese oxide ore powder with an appropriate amount of carbon reducing agent such as pulverized coal evenly, adding concentrated sulfuric acid without adding water and mixing evenly to obtain a mixture, controlling the initial concentration of the sulfuric acid in the mixture to be greater than or equal to 70%, curing the mixture by use of reaction heat via self-heating reduction and reducing the quadrivalent manganese in the manganese ores into bivalent manganese, mixing the cured material with water for stirring and leaching, and filtering the leached ore pulp to obtain a leachate, adding an appropriate amount of manganese oxide ores to the leachate to realize the oxidative decomposition of manganese dithionate, and performing neutralization, purification and impurity removal and crystallization on the solution obtained by filtering to produce the manganese sulfate. The method has the advantages that the low-cost easily available carbon reducing agent such as the pulverized coal is utilized to directly reduce the manganese oxide ores at a low temperature, and therefore, the energy consumption and the cost are low and the smoke pollution problem of reducing roasting is avoided; the manganese oxide ore powder is utilized to realize the oxidative decomposition of the manganese dithionate in the manganese sulfate solution and therefore, the quality of the manganese sulfate product is improved.

The present invention relates to a rubber composition made of at least an elastomer matrix, a reinforcing filler and a vulcanization system, the elastomer matrix comprising a highly saturated elastomer and natural rubber from 0 to less than 30 phr, the highly saturated A diene elastomer comprising 1,3-diene units and greater than 50 mole percent ethylene units, the vulcanization system comprising the formula MO 3 S‑S‑A‑S‑SO 3 Dithiosulfate salts of M, wherein the symbol A represents an alkanediyl group or a group comprising two or more alkanediyl units passing through an oxygen atom or a sulfur atom, the formula -SO 2 ‑, ‑NH‑, ‑NH 2 + -, -N(C 1 -C 16 Alkyl)-or-COO-groups, or arylene or cycloalkylene groups are connected in pairs, and the symbol M represents a metal atom. The present invention enables an improved compromise between the formation of air bubbles in the rubber composition when leaving the vulcanizer and the hysteresis of said composition.

The invention provides a passivator for cadmium in neutral soil and an application method thereof. The passivator is composed of calcium oxide with a weight accounting for 0.3-2.0% of the weight of neutral soil, calcium dithionate monohydrate with a weight accounting for 0.3-2.5% of the weight of the neutral soil, and charcoal with a weight accounting for 0.3-1.34% of the weight of the neutral soil. The passivator for cadmium in neutral soil provided by the invention reacts with effective cadmium in the neutral soil by using calcium oxide and calcined gypsum (calcium dithionate monohydrate) so as to generate small-activity cadmium sediments such as cadmium hydroxide and the like, and charcoal and the like in the passivator can selectively adsorb cadmium ions with large activity in the soil so as to reduce the transportability of the cadmium ions, therefore, an effect of reducing the quantity of effective-state cadmium in the neutral soil is achieved, the restoration of contaminated soil is implemented, and a situation that the pH value of the soil before and after the soil is treated is not changed can be ensured.