80results about How to "Low Inorganic Salt Content" patented technology

The invention relates to an alkali-resisting penetrating agent for cotton fabric mercerization. The penetrating agent is characterized by comprising the following ingredients in parts by weight: 60-100 parts of sulfamic acid, 25-80 parts of fatty alcohol, 45-150 parts of (EO:7-10) fatty alcohol ether and 2-45 parts of catalyst. A preparation method of the alkali-resisting penetrating agent comprises the following steps: putting the fatty alcohol and the fatty alcohol ether in proportion into a three-opening bottle of 500ml, starting stirring, adding the catalyst and the sulfamic acid, powering on a condenser for backflow, heating to 120 DEG C, performing heat preservation for 120 minutes, adding 100 parts of soft water slowly when the temperature is less than 100 DEG C, and stirring uniformly and subsequently regulating the pH value to 8-8.5 by use of a sodium hydroxide water solution. The alkali-resisting penetrating agent provided by the invention has the beneficial effects that the investment is less, three wastes (waste air, waste water and industrial residual) are prevented, the product is low in color, and the inorganic salt content is low.

The invention discloses a method for preparing a cucumber soilless culture substrate based on shiitake mushroom bran. The method comprises the following steps that the shiitake mushroom bran which is complete, free of contamination and left after five times of fruiting is chosen and dried in the sun or dried through baking; impurities are removed; the shiitake mushroom bran is crushed by a crusher to have the grain diameter within the range of 1-5mm; lime water is used for regulating the pH to be 7.0, and then water is added for regulating the humidity to be 60%; the shiitake mushroom bran is placed in a closed container and sealed for fermentation at the room temperature; 30 days later, the shiitake mushroom bran is taken out and dried in the sun or dried through baking to be used; the shiitake mushroom bran and peat are mixed according to the weight ratio within the range of 7:3-6:4; after the shiitake mushroom bran and the peat are mixed uniformly, the lime water is used for regulating the pH to be 6.5, and then the mixture can be used; the water content of the mixture ranges from 20% to 30%, and the cucumber soilless culture substrate is obtained. The method for preparing the cucumber soilless culture substrate based on the shiitake mushroom bran has the advantages of being practical, low in preparing cost, simple in preparing method, and convenient to popularize and apply, utilizing the shiitake mushroom bran effectively and reasonably, reducing the waste of the shiitake mushroom bran, lowering the risk caused by the situation that the shiitake mushroom bran is directly thrown in the environment, and increasing the use value of the shiitake mushroom bran.

The invention belongs to the field of textile fabric dyeing, and particularly relates to an instant accelerating agent for a reactive dye and an application method of the instant accelerating agent. The instant accelerating agent comprises, by weight, 1-5 parts of sodium hydroxide, 2-3 parts of sodium carbonate, 0.5 part of polyvinylpyrrolidone, 1-5parts of potassium carbonate, 1-5 parts of sodium-2-naphthalene sulfonate, 1-5 parts of sodium gluconate, 4-8 parts of potassium sulphate, 25-40 parts of sodium chloride and 30-60 parts of sodium sulfate. Compared with the prior art, the instant accelerating agent and the application method have the advantages that a reasonable formula is utilized, so that the instant accelerating agent effectively replaces anhydrous sodium sulphate and sodium carbonate in use, the addition amount of inorganic salt is reduced and is 68-70% of the original usage amount, the product quality is improved, meanwhile, the production time is reduced, the cost is saved, the enterprise benefits are ensured, the content of the inorganic salt in dye-bath water is reduced, the number of times for after-treatment washing is reduced, the wastewater treatment degree is reduced, and the instant accelerating agent is suitable for large-scale application and popularization.

The invention relates to the field of chemical pharmacy, and specifically provides a sodium dimercaptopropansulfonate preparation method. The sodium dimercaptopropansulfonate preparation method comprises that 1) sodium allyl sulfonate and bromine are subjected to a reaction under the effect of an auxiliary agent to obtain sodium dibromo propansulfonate, wherein the auxiliary agent is selected from sodium bromide, sodium iodide, or a combination thereof; 2) the sodium dibromo propanesulfonate obtained in step 1), sodium hydrosulfide and zinc acetate are subjected to a reaction to obtain a sodium dimercaptopropansulfonate-zinc complex; and 3) the sodium dimercaptopropansulfonate-zinc complex obtained in the step 2) reacts with hydrogen sulfide to obtain the sodium dimercaptopropansulfonate. According to the present invention, the preparation method has characteristics of low toxicity of the used reagent, low environmental pollution, low cost of zinc acetate, low consumption, low cost, simple process, no requirement of high pressure equipment and safe operation, and is suitable for industrial production, and the obtained sodium dimercaptopropansulfonate has the high purity and meets the quality requirements of the bulk drug.

A production process of the non-phosgene synthesis of scarlet acid particularly comprises the following steps: firstly dissolving J acid into water, adjusting the pH of the solution medium with 30% liquid alkali to obtain a pH of about 7, after complete dissolution, adding bis(trichloromethyl)carbonate with a theoretical amount being 16.7% of the feeding amount of the J acid, performing phosgenation reaction under a controlled temperature of 35-65 DEG C, wherein a reaction end point is reached when no NaOH is consumed and the content of the J acid in materials is not more than 5 g / L. In the process, the amount of bis(trichloromethyl)carbonate approaches the theoretical amount, so the amount of the liquid alkali is reduced by two-thirds; the inorganic salt content in the product is greatly decreased; the product quality is improved; the reaction condition is safe and moderate; the danger of the phosgene toxicity is eliminated essentially; and the process is applicable to industrial production.

A method for concentrating polycarboxylate water-reducers, characterized in that: in the process of producing polycarboxylate water-reducers high molecular polymers, after the polymer synthesis process is completed, the aqueous system of the polymers is directly In the reactor or transferred to other containers, from the temperature after the synthesis process to static, while cooling down, the polymer is separated from the water system and precipitated in the lower part of the container, and then the precipitated polymer is separated by physical methods The product is separated from water to obtain a concentrated aqueous polycarboxylate polymer product. Compared with the previous concentration methods using heating evaporation, depressurization evaporation or the combination of the two, the present invention has lower requirements on equipment, less energy consumption, simple production process, low cost and high water reduction rate.

The invention discloses a fast propagation method of orchid tissue culture, including culture steps of inducing, reproducing and successive transfer. An inducing medium used for inducing culture is a semi-solid medium taking an improved MS as a basic medium and adding with other ingredients; a medium used for reproducing and successive transfer is a two-phase medium of liquid and solid taking theimproved MS as the basic medium and adding with other ingredients. The gentle shaking of a temperature-controlling shaking bed is combined into the invention. The invention realizes the target of highly efficient inducing and reproducing, alleviating browning and effective successive transfer, which is especially suitable for the orchid tissue culture.