60results about How to "Process raw materials are easy to get" patented technology

The invention discloses a new method for synthesizing milrinone. The method is characterized in that a compound of formula 3 and 4-pyridineboronic acid undergo a Suzuki coupling reaction to synthesize milrinone. The method has the advantages of easily available raw materials, high yield and simple post-treatment.

The invention discloses a synthetic method of propyzamide. The method comprises the following steps: by taking 3, 5-dichlorobenzoic acid as a raw material, chlorinating 3, 5-dichlorobenzoic acid to generate 3, 5-dichlorobenzoyl chloride; further performing reaction between generated 3, 5-dichlorobenzoyl chloride and 3-amino-3-methyl butyne in the presence of alkaline matters and solvents; and filtering, drying and recrystallizing the reaction solution to obtain propyzamide. The material in the process is easy to obtain and low in cost, the production cost of products is low, and the safety coefficient of the process is high. The method is simple to operate, short in process flow and beneficial for industrialized production, and is a novel process for synthesizing propyzamide.

The present invention disclosed a synthetic process of 3,4‑ ylfluorophenpine, with 3,4‑ ‑ 腈 腈 as the raw material, potassium fluoride is a fluoride reagent, and 1,3‑ 甲 咪 咪 2‑ pyramoleAntinone is a response solvent. Double ‑ (N -two (diharamine) sore) chloride salt is catalyst. The reactor reacts from 130 to 150 ° C for 2 to 3h, and the reaction of 180 ° C ° C is 5 ~ 5 ~At the end of 6h, the reactive decompression and refined distillation of 3,4‑ ‑ylfluorophenillene, which was purified after filtering the reaction solution, reached 85%.Terminal liquid (including catalyst) is directly used for the next batch of reactions.The material raw materials of the present invention are easy to obtain, the response conditions are mild, the response time is short, the operation is simple, the yield is high, the reaction solvent (including catalyst) can be applied multiple times, the cost is low, the three waste discharge is small, and it is suitable for industrial production.

The invention discloses a process for wet method simultaneous desulfurization and denitration by using chlorine-containing strong oxidizer absorption liquid, comprising: infusing flue gas to be processed into absorption reactor to fully contact with chlorine-containing strong oxidizer absorption liquid, absorbing NOx and SO2 in flue gas and discharging same. In the invention, the raw materials are easy to obtain, and the formulation of adsorption liquid is easy. For processed flue gas by the above process, removal efficiency of nitric oxides can be up to 60 to 95%, and the desulfurization efficiency can be up to more than 90%.

The invention discloses a method for producing special rutile type titanium white powder for power coating, which comprises the following steps of: preparing slurry of which titanium dioxide concentration is 300 to 400g / l by using bleached metatitanic acid, and adding a calcining auxiliary agent into the slurry; filtering the obtained metatitanic acid, then calcining solid, and grinding the solidto obtain a primary product; preparing titanium dioxide slurry of which titanium dioxide concentration is 650 to 850g / l by using the obtained primary product, adding a wetting agent into the titaniumdioxide slurry, and performing dispersion and grinding; heating the obtained titanium dioxide slurry to between 40 and 90 DEG C, adding dispersant, zircon salt or titanium salt, silicon salt and aluminum salt into the slurry in turn, adjusting the pH value to between 5 and 9, ageing the mixture, and adjusting the pH value to between 7 and 8; and then filtering, washing and drying the mixture, treating the dried product by an organic surface treatment agent, and vaporizing the product to obtain the rutile type titanium white powder. Compared with the prior art, the rutile type titanium white powder obtained by the method has the properties of stable crystal lattice, good dispersion, heat and yellowing resistance, and good oily whiteness, reducing power, covering power and weather resistance and the like; the appearance and properties of the rutile type titanium white powder are close to that of the rutile type titanium white powder prepared by a chlorination process; and the productionmethod has the advantages of easily obtained process raw materials and stable process control.

The invention relates to a monopotassium phosphate production method. Feed-grade calcium hydrogen phosphate and industrial-grade phosphoric acid are firstly subjected to a pre-decomposition reaction, potassium hydrogen sulfate is added for a double-decomposition reaction, calcium sulfate and filtrate are filtered out, the filtrate is purified, concentrated, cooled and crystallized, a monopotassium phosphate product is prepared, crystallization mother liquor returns to feed-grade calcium hydrogen phosphate for cyclic operation or is used in production of chloride-free compound fertilizer. Compared with the prior art, the recovery rate of phosphorus in feed-grade calcium hydrogen phosphate is substantially increased to 95% or above through pre-reaction of phosphoric acid and feed-grade calcium hydrogen phosphate, besides, the yield of potassium in potassium hydrogen phosphate reaches 99.5%, meanwhile, phosphoric acid is recycled, emission of waste liquor is avoided, the technological process is simple, the yield of phosphorous and potassium in raw materials is high, the production cost can be substantially reduced, and the method is environment-friendly and sustainable and has great competitive advantages.

A titanium pigment and its production are disclosed. Anatase titanium dioxide content is <99% and water dispersion is <92% and emulsified dispersant 0.1-0.4% is added. It's simple and cheap, less consumption, excellent coating covering powder and mechanical performance. It's convenient for transportation and storage.