5 results about "Lime acetate" patented technology

This application relates to the field of ceramic materials technology, and discloses a heat-resistant ceramic glaze with high thermal shock resistance and low expansion, and its preparation method. The glaze comprises 70.0–80.0 parts of base powder, 20.0–30.0 parts of β-spodumene clinker, 50.0–60.0 parts of added water, 0.2–0.4 parts of sodium polyacrylate, 0.1–0.3 parts of sodium carboxymethyl cellulose, and 0.05–0.15 parts of calcium acetate. The base powder contains inorganic raw materials such as calcium borate. Within the system, a three-dimensional yield network structure is formed by the cross-linking of the molecular chains of sodium carboxymethyl cellulose and calcium ions ionized from calcium acetate. During preparation, the base powder and β-spodumene clinker are sequentially fed into a ball mill for grinding, and a cross-linking agent is added before stopping the mill. This invention utilizes the three-dimensional yield network structure to stably suspend large-particle-size β-spodumene clinker. When the ceramic product experiences drastic temperature changes, the low-expansion crystal remnants retained internally buffer thermal stress concentration, thereby effectively preventing glaze surface cracking.

The application discloses a preparation method of calcium acetate oral solution; the monomethyl ammonium glycyrrhizinate is dissolved in a glycerol aqueous solution, a solution is formed through short-time heating, and then the solution is mixed with calcium acetate and other auxiliary materials, so that the problem of insoluble substances can be solved; meanwhile, the calcium acetate oral solution prepared by using the method is transparent and clear in liquid in a 6-month accelerated test, and the uniformity and stability of the product are ensured. Through the creatively improved adding mode of the taste masking agent, the solubility problem of the monomethyl ammonium glycyrrhizinate in the preparation process of the product is solved, and the stability of the product is good. The application further studies the adding mode of the materials and the process parameters, shortens the preparation time, and improves the production efficiency of the medicine.

The utility model discloses a drying device for calcium acetate bulk drug processing relates to the field of calcium acetate bulk drug, the drying device for calcium acetate bulk drug processing, including chain type drying furnace, adjusting unit and drive unit, the drying device for calcium acetate bulk drug processing, through drive unit along chain type drying furnace in mobile, under the movement of drive unit, while turning over the rod rotates in the storage box, under the rotation of turning over the rod, the calcium acetate bulk drug in storage box is rolled, and the calcium acetate bulk drug in chain type drying furnace is conveniently dried evenly, avoids the uneven drying of the bottom calcium acetate bulk drug and occurs, does not need to repeat drying, improves the calcium acetate bulk drug processing effect.

The present invention belongs to the technical field of organic synthesis. Disclosed is a preparation method for bisphenol A bis(2-hydroxyethyl) ether. The specific steps of the preparation method are as follows: adding bisphenol A, a mixed acetate catalyst and a solvent into a reactor; starting stirring and performing replacement by nitrogen, raising the temperature to a reaction temperature, and then starting to feed ethylene oxide; after the addition of ethylene oxide is completed, maintaining the temperature and continuing the reaction until the pressure no longer decreases; cooling same to a desolventization temperature, performing desolventization until no more solvent comes out, then cooling same and degassing same, and discharging same to obtain the bisphenol A bis(2-hydroxyethyl) ether. The mixed acetate catalyst consists of calcium acetate, magnesium acetate and barium acetate; and the solvent is methyl cyclohexane. The preparation method of the present invention uses specific mixed acetates as a catalyst and methyl cyclohexane as a solvent, so that an excellent catalytic effect is achieved and the prepared bisphenol A bis(2-hydroxyethyl) ether is endowed with high purity, a low hydroxyl value and light color, and the solvent has low toxicity and is easy to recycle.