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73 results about "Gum acacia" patented technology

Senegalia senegal (until 2005 known as Acacia senegal) is a small thorny deciduous tree from the genus Senegalia, which is known by several common names, including Gum acacia, Gum arabic tree, Sudan gum and Sudan gum arabic. In parts of India, it is known as Kher or Khor. It is native to semi-desert regions of Sub-Saharan Africa, as well as Oman, Pakistan, west coastal India. It grows to a height of 5–12 m, with a trunk up to 30 cm in diameter. Sudan is the source of the world's highest quality gum arabic, known locally as hashab gum in contrast to the related, but inferior, gum arabic from Red acacia or talah gum.

Flake silver powder prepared by means of chemical reduction method and preparation method thereof

The invention discloses flake silver powder prepared by means of a chemical reduction method and a preparation method thereof. The method comprises the steps that firstly, all raw materials are selected and weighed; secondly, under constant-temperature water bath conditions, gum acacia powder, potassium sulphate, hydrogen peroxide and vitamin C are added into water and stirred to dissolve, and thepH value of a solution is adjusted; thirdly, silver nitrate is added into water and stirred to dissolve, and the pH value of a solution is adjusted; fourthly, the silver nitrate solution is added into the reducing solution for reaction, and stirring and heat preservation are performed; and fifthly, after flake silver powder particles are formed, cooling and filtering are performed in sequence, the particles are cleaned with pure water and then cleaned with ethyl alcohol, finally, extraction filtration is performed to remove moisture, and drying is performed. The invention further provides theflake silver powder prepared by means of the method. The preparation method is used for preparing the flake silver powder with the grain size being around 2-4 [mu]m, and the silver powder is high incrystallinity degree, good in dispersity, high in shape and grain size uniformity, stable in performance, excellent in quality, simple in preparation method, low in cost and high in yield.
Owner:河南金渠银通金属材料有限公司

Desert sand ceramic bowl and preparation method thereof

The invention discloses a desert sand ceramic bowl and a preparation method thereof. The desert sand ceramic bowl comprises the following raw materials in parts by weight: 34 to 46 parts of desert sand, 22 to 32 parts of diatomite, 18 to 27 parts of garnet, 13 to 21 parts of loess, 10 to 15 parts of purple grit mud, 22 to 34 parts of bryozoatum, 5 to 10 parts of a hawthorn seed powder, 8 to 14 parts of boron nitride, 8 to 12 parts of polyacrylamide, 5 to 10 parts of gum acacia, 4 to 8 parts of sodium hexametaphosphate, 3 to 6 parts of tetraethoxysilane, and 10 to 12 parts of antimicrobial powder. According to the invention, desert sand is used for replacing quartz sand to prepare the ceramic bowl, so that the manufacturing cost is lowered, and the comprehensive performance of the ceramic can be improved through the combination of the diatomite, the garnet, the loess, the purple grit mud, the bryozoatum and the like, and due to the addition of the hawthorn seed powder and the boron nitride, the thermal stability and the chemical stability of a ceramic brick are improved. The ceramic bowl provided by the invention is excellent in comprehensive performance, has the characteristics of high intensity, excellent high temperature stability, good chemical resistance and the like, is durable, and has a wide market prospect.
Owner:安徽省含山瓷业股份有限公司

Preparation method of amlodipine besylate tablets

The invention relates to a preparation method of amlodipine besylate tablets. The preparation method is mainly used for solving the technical problems that existing products are low in yield and poorin dissolution rate. The technical scheme adopted by the invention lies in that the preparation method of amlodipine besylate tablets is characterized by comprising the steps of (1) firstly uniformlymixing amlodipine besylate with gum acacia to obtain a mixed material A; enabling microcrystalline cellulose and calcium phosphate dibasic anhydrous to dissolve in anhydrous ethanol, performing stirring, and then performing spray drying so as to obtain a mixed material B; placing the mixed material A, the mixed material B and magnesium stearate in a high-efficiency wet-method mixed granulating machine, and performing stirring to obtain a mixed material C; adding the mixed material C to a dry-method granulating machine, and screening out fine powder so as to obtain granules I; adding the granules I, magnesium stearate and sodium carboxymethyl starch to a three-dimensional movement mixing machine together, and performing mixing so as to obtain granules II; and tabletting the granules II so as to obtain the amlodipine besylate tablets. The amlodipine besylate tablets are mainly applied to the technical field of medicines.
Owner:HUNAN QIANJIN XIELI PHARMA CO LTD
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