34results about How to "Won't crystallize" patented technology

The invention discloses a high-purity Delta terpilenol separation and purification method, which comprises the following steps: A, rectification, namely adding a Delta-terpilenol raw material to a rectifying tower, controlling the reflux ratio to be (800-1000) to 1, and collecting fractions of 210+/-1 DEG C to obtain crude Delta-terpilenol, wherein the heating temperature of the tower is 210-220 DEG C, the tower top temperature is 80-150 DEG C, the vacuum degree of the rectifying tower is 750mmHg to 760mmHg; B, crystallization, namely heating the crude Delta-terpilenol to a molten state, mixing the molten crude Delta-terpilenol with 90-98% ethanol according to a mass ratio f 1 to (2.5-5), and crystalizing for 1-5 days at 5-10 DEG C; and C, centrifugal separation, namely adding the crystallized material to a centrifugal machine, centrifuging for 10-30 minutes and then standing, and collecting the crystallized product, wherein the rotation speed of the centrifugal machine is 1500-2000r/min. Due to the adoption of the method, the Delta-terpilenol with the purity being above 99 percent can be obtained by separation.

The invention discloses a thermoplastic elastomer refrigerator door sealing strip material and a preparation method. The thermoplastic elastomer refrigerator door sealing strip material is prepared from the following materials of SEPS (hydrogenated styrene-isoprene) and/or SBS (styrene-butadiene-styrene), LLDPE (linear low density polyethylene), regular polypropylene, filling oil, mineral filler,a lubricant, a coupling agent and an antioxidant. The preparation method of the thermoplastic elastomer refrigerator door sealing strip comprises the following steps of weighing, uniformly mixing, granulating, extruding and forming. The thermoplastic elastomer refrigerator door sealing strip has the advantages that the problem in the refrigerator door sealing strip material using PVC (polyvinyl chloride), TPV (thermoplastic vulcanizate) and the like as the substrates on market is solved; the cold-resistant property is good, the elasticity is good, the deformation recovery ability is strong, the sealing effect is good, the non-toxic and environment-friendly effects are realized, and the recycling effect is realized; the hardness range is broad, the anti-crease effect is good, the dry and fresh effects are realized, the hand feel is comfortable, and any foreign odor is avoided.

The invention discloses a dental pulp mesenchymal stem cell cryopreservation liquid which comprises a component A and a component B. The component A is a serum-free culture medium, and the component Bis composed of the following raw materials: titanic acid nanotubes, disodium adenosine 5-phosphate, vitamin E, 1, 8-cineole and glycerin. No animal serum is added into the cryopreservation liquid, sothat exogenous pollution possibly caused by the animal serum is avoided. 1, 8-cineole and glycerol in the component B have a synergistic effect, so that moisture in cells is prevented from crystallizing when the cells are close to a freezing point, and structural damage in the cells is avoided. Due to the added titanic acid nanotube, disodium adenosine 5-phosphate and vitamin E, on one hand, thecells keep certain activity in the cryopreservation process in liquid nitrogen, and apoptosis of the cells is avoided; on the other hand, after cryopreservation is finished, cells can be quickly recovered, and the activity can be recovered. The invention also provides a dental pulp mesenchymal stem cell cryopreservation method, and the dental pulp mesenchymal stem cell cryopreservation liquid provided by the invention is adopted in the method, no complex programmed cooling is needed, and operation is simple.

The invention discloses an anti-scaling agent for oil well silicate scale. The anti-scaling agent is prepared by compounding a component A, a component B and water according to the mass ratio of 1:1:2, wherein the component A represents random terpolymer the side-chain of which has carboxylic acid, sulfonic acid and carboxylic acid ester functional groups, and the component B represents phosphinocarboxylic acid compound containing a phosphoric acid group-PO(OH)2 and a carboxylic acid group-COOH. The invention is applied to the scaling prevention of a strong base ASP flooding block productionwell, efficiently prevents the silicate from scaling at a pump, a bar pipe and the like, reduces the frequency of operation because of scaling and prolongs the pump inspection period of the productionwell.

The invention discloses a refining treatment technology of camellia oil. The technology comprises addition of phosphoric acid for degumming, alkali refining with sodium hydroxide, washing with water at 80-95 DEG C, oil and water separation, vacuum drying, decolorization through combination of vacuum and a decolorizing agent, deodorization at 210-220 DEG C, cooling crystallization and dewaxing. The technology has the advantages as follows: the acid value is adjusted effectively and the storage performance and quality of the camellia oil are guaranteed; excessive loss of nutrients is avoided, the damage degree of vitamin E is reduced, and efficient decolorization and degreasing can be realized.

The invention relates to a technology for processing apricot fructose, comprising the following processing steps: sorting, carrying out enzymolysis, decontaminating, sterilizing, carrying out secondary enzymolysis and clarification, preheating, carrying out ultrafiltration, decoloring, deacidifying, condensing, sterilizing, cooling and filling. Compared with the common sugar (such as cane sugar, beet sugar and the like), the product obtained by the processing technology has the characteristics of high sweetness and low heat; compared with the fructose corn syrup, the apricot fructose has the characteristics of clear and transparent appearance, high fructose content, good mobility and the like, does not crystallize below zero DEG C, is convenient to use, and is used for the industry of beverage, food, pharmacy and the like.

The invention relates to a high-content fomesafen aqueous solution and a preparation method thereof. The preparation method comprises the following steps: adding deionized water into a container, stirring, adding a 97% fomesafen raw medicine, slowly dropping a 99% 2-(2-aminoethoxy) ethanol solution, after dropping is completed, continuously stirring for more than 10 minutes to sufficiently react and neutralize the fomesafen raw medicine with 2-(2-aminoethoxy) ethanol so as to form a transparent solution, finally adding an alkyl glycoside surfactant aid, and uniformly stirring to obtain a fomesafen aqueous solution product.

The invention relates to an immune cell cryopreservation method. The immune cell cryopreservation method comprises the following steps: immune cell cryopreservation liquid is prepared, wherein the immune cell cryopreservation liquid is prepared from the following raw materials in percentage by weight: 3-7 mL of dimethyl sulfoxide, 2-6 mL of dextran, 15-25 mL of a cell culture medium, 2-4 mL of human serum albumin, 2-4 mL of raffinose, 2-4 mL of glucose, 1-3 mL of propylene glycol and 60-80 mL of human autologous plasma; and immune cells are cryopreserved through the immune cell cryopreservation liquid. Compared with the prior art, the immune cells are effectively protected against freezing damage, safety is high, damage to the cells is small, and the recovery survival rate of the immune cells can be increased and can reach 96% or above.

The invention provides an immune cell cryopreservation method. The immune cell cryopreservation method comprises the following steps: S1, acquiring immune cells; S2, acquiring human autologous plasma; S3, preparing a cell freezing medium; S4, carrying out cell cryopreservation. According to the immune cell cryopreservation method provided by the invention, the immune cells can be effectively prevented from being damaged by freezing, the recovery survival rate of the immune cells is improved, and the resveratrol added into the cell cryopreservation liquid can promote the multiplication capacity of the recovered immune cells, so the activity of the recovered cryopreserved immune cells is improved; hydroxyethyl starch, propylene glycol and polyethylene glycol can replace the protection effect of dimethyl sulfoxide, the use amount of dimethyl sulfoxide is reduced, it is guaranteed that when cells are close to the freezing point, water in the cells cannot crystallize, damage to the cells is small, and foreign protein cannot be introduced into human autologous plasma added into the cell freezing medium, so the possibility of animal disease source pollution is reduced, and the potential safety hazard of exogenous serum is avoided.

The invention discloses a method for regulating nutrients in a diammonium phosphate product. Aiming at the characteristic that the danger coefficient for regulating the nutrient ratio in the diammonium phosphate product by adding concentrated sulfuric acid is high, ammonium sulphate slurry and ammonium sulfate crystal are produced through adding and dissolving phosphogypsum into diammonium phosphate slurry so as to embed ammonium sulfate into the diammonium phosphate product, thus the stable product quality is maintained, the consumption of a phosphorus resource is reduced, the nitrogen content of the diammonium phosphate product is increased and the production cost is lowered. The ammonium sulfate (NH4) 2SO4 has the nitrogen content of 21%; after the ammonium sulfate is added into the diammonium phosphate product, components of the diammonium phosphate product can be changed and the ammonia content of the diammonium phosphate product can be increased; by the method, not only phosphorus reduction and nitrogen increase of the diammonium phosphate product can be effectively promoted to keep stable product quality; the used ammonium sulfate slurry is produced by a device for producing ammonium dihydrogen phosphate from the phosphogypsum, so that high consumption of the phosphogypsum can save the treatment cost of the phosphogypsum, reduce the environment-protecting pressure and prolong the service life of a phosphogypsum slag field.

(S)-4-hydroxy-2oxo-1-pyrrolidine acetamide hydro-acupuncture for injection is characterized in that (S)-4-hydroxy-2oxo-1-pyrrolidine acetamide, propylene glycol, lecithin, vitamin C, ethylene diamine tetraacetic acid and benzyl alcohol which are used as raw materials and auxiliary materials undergo steps of concentrated mixing, diluted mixing, encapsulation, sterilization, inspection and packaging to prepare the (S)-4-hydroxy-2oxo-1-pyrrolidine acetamide hydro-acupuncture for injection. During the sterilization process of the (S)-4-hydroxy-2oxo-1-pyrrolidine acetamide injection, pH value of the solution is barely changed, and impurity increasing amount during the sterilization process is only 0.05%. The finished product will not be crystallized during the storage process, is not easy to oxidize, and has good stability. The period of validity is as long as 18 months and above. During the period of validity, the product has less impurity, and the total impurity content is lower than 0.29%. Pains of patients are obviously reduced during the injection process, and patients' compliance is good. The product is worthy of market promotion.

The invention discloses a Chinese salad seasoning and a preparation method of the Chinese salad seasoning and belongs to the field of seasoning preparation. The Chinese salad seasoning comprises the following raw materials in parts by weight: 10-15 parts of freeze-dried powder of passion fruit aqueous extract, 6-8 parts of soybean tissue protein, 6-8 parts of dendrobium candidum, 15-20 parts of vinegar beans, 10-12 parts of table salt, 0.5-1 part of disodium5'-ribonucleotide, 10-15 parts of monosodium glutamate, 5-8 parts of spices, 10-12 parts of edible vinegar and 15-20 parts of camellia oil. The seasoning prepared according to the preparation method is rich in beneficial substances such as various amino acids, proteins, phospholipids and the like. Used for flavoring of the Chinese salads, the Chinese salad seasoning makes the Chinese salads delicious in taste. Moreover, the Chinese salad seasoning also has the functions of promoting the secretion of saliva or body fluid, nourishing the stomach, improving appetite, postponing senility and so on.

The invention provides a (S)-4-hydroxyl-2oxo-1-pyrrolidineacetamide injection. The (S)-4-hydroxyl-2oxo-1-pyrrolidineacetamide injection is characterized by being prepared by taking (S)-4-hydroxyl-2oxo-1-pyrrolidineacetamide, propylene glycol, lecithin, vitamin c and ethylenediamine tetraacetic acid as raw and auxiliary materials through steps of concentrating, diluting, filling and sealing, sterilizing, checking and packaging, wherein the use amount of the raw and auxiliary materials is as follows in percentage by weight: 68 percent to 76 percent of the (S)-4-hydroxyl-2oxo-1-pyrrolidineacetamide, 10 percent to 18 percent of the propylene glycol, 10 percent to 17 percent of the lecithin, 1 percent to 3 percent of the vitamin c and 2 percent to 5 percent of the ethylenediamine tetraacetic acid. The (S)-4-hydroxyl-2oxo-1-pyrrolidineacetamide injection prepared by the invention has the advantages that a product is not crystallized and not easily oxidized in a storage process, the increasing amount of impurities in a sterilization process is only 0.03 percent and the stability is good; the validity period reaches 18 months or more, the product contains few impurities during the validity period and the content of the total impurities is lower than 0.27 percent; a preparation process is simple and feasible and is worthy of being popularized in the market.

The invention relates to compositions comprising A) at least one hybrid quat and B) at least one fatty alcohol.