1008 results about "Sodium percarbonate" patented technology

The invention relates to a dyeing and fixation process technical method of an activated dye and a textile auxiliary used in the method. The textile auxiliary or the substance or additive having the similar function like the textile auxiliary includes inorganic substance, organic substance, additive and adjusting ingredient; the raw materials are packed directly or packed after being smashed after the measurement, or heated to above 110 DEG C in water to be prepared into different products; in conventional equipment and without the modification of the fiber to be dyed, firstly, through only adding one of the products no more than the quantity of sodium carbonate to realize completely abandoning or no longer mainly relying on the sodium carbonate for fixing; secondly, meanwhile the normal contents of various salts are substantially reduced by 15 to 100 percent; therefore, thirdly, after getting rid of the restriction of relying on the sodium carbonate and the salt in the traditional process, the invention can substantially reduce the resources irrationally wasted in each process of dyeing such as water, power and vapor, etc. More particularly, the process operation is simplified, the processing cycle is shortened, and the effects of substantial energy saving and exhaust reducing, and effect strengthening and consumption reducing can be realized.

The present invention is a formable dental treatment tray utilizing poly(2-ethyl-2-oxazoline) and a gelatinous active. Blending of the active is accomplished by mixing the Poly(2-ethyl-2-oxazoline) with an active ingredient, such as a peroxide like hydrogen peroxide, carbamide peroxide, sodium perborate, or sodium percarbonate, usually also with water or an appropriate organic solvent. Peroxide concentrations in these new gels can reach a 30% concentration of hydrogen peroxide while maintaining a shelf life of six months at room temperature without developing peroxide decomposition. The gels are applied to an appropriate backing and dried to a gelatinous state. In use, the active is hydrated and regains adhesiveness. Then the tray is pressed and formed around a user's dental arch to form the customizable tray. Multiple active ingredients may be used, with or without peroxide, for accomplishing desired treatment regimens.

The invention discloses a preparation method of vinyl sulfate. The preparation method comprises the following steps: (1) substitution reaction: carrying out substitution reaction on thionyl chloride and ethanediol used as raw materials, washing the reaction solution with deionized water to a neutral state, standing, stratifying, and separating to obtain vinyl sulfite; (2) oxidation reaction: adding dichloromethane and a ferric sulfate solution into the vinyl sulfite, cooling to 0-5 DEG C, dropwisely adding a sodium percarbonate solution to obtain a water-phase/organic-phase-coexistent reaction solution, standing the reaction solution, stratifying, separating out the water phase, and carrying out reduced pressure distillation on the organic phase, thereby obtaining the vinyl sulfate crude product; and refinement: recrystallizing the vinyl sulfate crude product by using dichloromethane to obtain the high-purity vinyl sulfate. The preparation method has the characteristics of high mole yield, high product purity, low moisture content, low acid value and low preparation cost. The mole yield can reach 85% or above, the purity can reach 99% or above, the moisture content is less than or equal to 60 ppm, and the acid value is less than or equal to 60 ppm.

The invention discloses melt-blown polypropylene as well as a preparation method and application thereof. The melt-blown polypropylene comprises following raw polypropylene resin, a degradation agent,an antioxidant and a lubricant, wherein the degradation agent is selected from one or more of hydrogen peroxide, sodium percarbonate, ammonium percarbonate and urea peroxide. The melt-blown polypropylene also comprises a nucleating agent selected from one or more of dibenzylidene sorbitol, aryl phosphate and nano scale amorphous silicon dioxide, wherein the degradation agent and the nucleating agent respectively account for 0.05-0.5% of the mass percentage of the raw materials. The preparation method comprises the following steps: premixing raw materials, stirring, then selectively adding a deodorant; and melting and granulating by an extruder to obtain the product. The invention also discloses an application of the melt-blown polypropylene in manufacturing melt-blown non-woven fabrics, melt-blown filter elements and sound-absorbing cotton. The melt-blown polypropylene has the advantages of low odor, high electret charge stability and the like.

The invention provides a peroxyacetic acid generator which consists of acetylsalicylic acid, tetraacetylethylenediamine, sodium percarbonate, a surfactant, a corrosion inhibitor and a pH regulator at a mass ratio of 1:(1.5-2.0):(3.5-5):(0.02-0.05):(0.1-0.3):(3-6). Meanwhile, the invention also discloses a preparation method of the peroxyacetic acid. Through the invention, by adding the pH regulator, the pH value of the mixed solution is stabilized at about 7-8, and then the prepared peroxyacetic acid solution has higher stability and lower corrosivity.

A bioavailable water soluble animal feed mineral composition which provides buffering of animal digestive fluids to near-neutral pH comprising an alkali metal magnesium phosphate hydrate providing a total of between 1.5 and 4.7 equivalent weights of alkali metal and magnesium per molecule of phosphorus. Water of hydration amounting to between 6 and 12 percent is required for effectiveness. An effective composition, Na2Mg(PO4) 0.8 H2O, is prepared by stepwise reaction of sodium carbonate and magnesium oxide with orthophosphoric acid in a rotating pan equipped for high intensity mixing.

The invention relates to a method for remediating organic-contaminated place soil by using microwave in collaboration with sodium percarbonat and belongs to the technical field of organic-contaminated place soil remediation; the method specifically comprises: preparing a sodium percarbonat solution having a mass concentration of 5-10%, adding the sodium percarbonat solution to 10-15mg/kg phthalate contaminated soil in a mass ratio of 1: (1-2), mixing thoroughly and stirring uniformly, putting the mixture in a variable-frequency microwave reactor, setting a temperature range from 60 to 80 DEG C, carrying out a continuous stirring reaction for 20-30 minutes, and finally taking out the mixture and measuring a phthalate concentration in the soil to find out that a phthalate removal rate is above 40%; the technical method for remediating soil of the present invention is efficient, easy to implement, free from secondary pollution, good in removal effect, and suitable for organic-contaminated soil polluted by phthalates, polycyclic aromatic hydrocarbons, polychlorinated biphenyls and the like.

The present invention discloses process of treating bamboo shoot coating for producing tableware and process of producing tableware with bamboo shoot coating. The process of treating bamboo shoot coating includes the following steps: 1. sorting material; 2. cutting, boiling in water, digesting in solution of sodium percarbonate or hydrogen peroxide and rinsing in water; and 3. dewatering, leveling, stoving and eliminating hair to form soft sheet of bamboo shoot coating fiber. The process of producing tableware with bamboo shoot coating includes the following steps: 1. cutting soft sheet of bamboo shoot coating fiber; 2. applying adhesive and intersectionally superposing; 3. high temperature molding and curing to form the semi-finished product; and 4. deburring to obtain the finished product. The production process is simple, environment friendly, low in power consumption and suitable for industrial production.

The invention provides a cleaning agent that is applicable to clean hollow fiber ultrafiltration membrane, which comprises the compounds (percentage by weight): anhydrous sodium carbonate accounts for 25-45 percent, trisodium phosphate accounts for 5-20 percent, anhydrous sodium sulfate accounts for 2-5 percent, ethylene diamine tetraacetic acid tetrasodium salt (EDTA-4Na) accounts for 5-15 percent, sodium percarbonate accounts for 0-33 percent, emulsifying agent SAS accounts for 8-15 percent, peregal-25 accounts for 0-5 percent and dodecyl sodium sulfate accounts for 4-10 percent. The compounds are added into an enamel reactor with a stirrer and a grinder in sequence to be stirred for 2-3 hours, thus obtaining the cleaning agent through grinding the mixture evenly. The invention has simple preparation and is particularly applicable to clean hollow fiber ultrafiltration membrane such as ultrafiltration oily wastewater, organic wastewater, protein concentration, etc.; the invention has strong decontamination direction, high effect and low cleaning cost.