37results about How to "Less prone to allergies" patented technology

The invention discloses an azlocillin sodium crystal preparation and a preparation method thereof. The preparation method comprises the following steps: step 1, dissolving a crude azlocillin sodium product in a mixed solvent of methanol and ethyl methyl ketone, adding active carbon for adsorption, carrying out filtering, cooling the obtained filtrate to allow a crystal to be precipitated, washing the crystal with a mixed solution of methanol and ethyl methyl ketone and carrying out pressure-reduced drying so as to obtain a primary refined azlocillin sodium product; and step 2, dissolving the primary refined azlocillin sodium product in a hot ethyl methyl ketone solution, carrying out press filtration with a high-efficiency filter, subjecting obtained mixed liquor to cooling, pressure reduction and concentration, then carrying out cooling to allow a crystal to be precipitated and subjecting the precipitated crystal to filtering and pressure-reduced drying so as to obtain the azlocillin sodium crystal preparation. The azlocillin sodium crystal preparation provided by the invention has the advantages of a small particle size, uniform particle size distribution, good fluidity, simple crystallization process, low residual quantity of the organic solvent, high stability, good security, small toxic and side effects, low proneness to allergy, etc.

The invention relates to a freeze-dried rabies vaccine for humans and a preparation method of the vaccine, relates to the field of vaccine production preparation technologies and aims at solving the problems that effective virus antigen expression content is low, the side effect rate of a vaccinator is high and vaccine yield and quality can not meet standard requirements as only a biological reactor is adopted for producing a rabies vaccine. The freeze-dried rabies vaccine for humans is obtained by inoculating aG strain rabies virus on Vero cells and sequentially carrying out ultrafiltration and concentration, separation and purification as well as freeze drying, wherein the packing volume of the freezed-dried rabies vaccine for human use is 0.5ml / dose, and during freeze drying, the adopted vaccine freeze-drying protecting agent comprises the following ingredients: 60-90g / l of trehalos, 6-14g / l of sodium glutamate, 3-6g / l of urea, 2-3g / l of L-arginine and 10g / l of 199 culture medium, and the vaccine freeze-drying protecting agent does not contain gelatin, human serum albumin or dextran. The freeze-dried rabies vaccine for humans has the advantages that cost is low, operation is easy, pollution is hardly produced, vaccine quality and yield are greatly improved, the content of impurities in a vaccine is reduced, allergy reactions are hardly caused, and vaccine safety is greatly improved.

The invention relates to a preparation method of deer placenta oligopeptides, which comprises the following steps: taking a fresh deer placenta, cleaning bloodiness, removing connective tissues, blood vessels and fat, draining the surface moisture of the placenta, and cutting the placenta into chips of which the sizes are about 1.0-1.3cm<3>; adding the cut placenta into 0.9% saline water of which the quality is 3 times of the quality of the cut placenta for grinding tissues, and homogenizing the tissues for 20min at a high rotation speed of 12000r / min; putting the homogenized placenta into anultrasonic crusher with the power of 200w for crushing for 3 times for 10s each time at an interval of 25s; freezing the crushed placenta at -18 DEG C, naturally unfreezing the crushed placenta at ordinary temperature after 24h, and repeatedly carrying out operation for 2 times; and putting the frozen and thawed placenta into a refrigerated centrifuge at 4 DEG C for carrying out refrigerated centrifugation for 25min at 6000r / min, taking the supernatant liquid for refrigeration and drying to obtain the powder containing deer placenta oligopeptides. The preparation method of deer placenta oligopeptides of the invention has the advantages of simple preparation method and high yield and is suitable for industrialized production.

A kind of hair coloring hair care shampoo, it comprises following each composition: amphoteric surfactant, nonionic surfactant, acrylic acid copolymer, dimethyl siloxane, ethylene glycol distearate, cationic compound, propylene glycol, Semi-permanent dye, a mixture of dimethyloldimethylhydantoin and butyl-3-iodo-2-propynylcarbamate, citric acid, parfum, deionized water, which is complementary or recoloring to bleached hair It has the effect of dyeing, and at the same time it has a good care effect on the hair. It is safe to use and less irritating. Just follow the normal shampooing procedure.

The invention relates to a wool, cotton and cotton polyester interweaving weft knitting double-faced pile fabric. According to the fabric, pure-cotton silvalin is adopted as looped pile inner yarn, wool is adopted as middle connection yarn, cotton polyester silvalin is adopted as surface layer yarn, the pure-cotton silvalin, the wool and the cotton polyester silvalin are woven on a single-face circular weft knitting fleece machine to form a stitched looped pile fabric, in the weaving process, the wool middle connection yarn generates wool exposed points on the outer surface of the cotton polyester fiber surface layer, and the wool exposed points account for 30-33% of the area of the cotton polyester fiber surface layer; the looped pile inner yarn is napped, the wool exposed points are sanded to obtain the weft knitting double-faced pile fabric with the pure-cotton gigging inner layer, the wool connection layer, the cotton polyester surface layer and the wool felt layer, wherein the pure-cotton silvalin accounts for 52-57%, the wool accounts for 7-22% and the cotton polyester silvalin accounts for 22-27%. The fabric has the advantages of being fine in suede, high in wool touch, soft and full in hand touch, good in heat retention property, good in breathability, good in mold holding nature, capable of resisting static electricity and low in price.

The invention discloses an endometrium biopsy tool, a biopsy tool preparation device and a preparation method, and relates to the technical field of medical instruments. The biopsy tool includes a sampling device and a protection device, the sampling device and the protection device use TiB 2 / Al 2 o 3 Made of ceramic composite material, the sampling device includes an operating rod, the inner end of the operating rod is provided with a sampling spoon, the inner edge of the sampling spoon is provided with a scraper, and the outer end of the operating rod is provided with an operating handle, The protection device includes a protection tube, the inner end of the protection tube is provided with an expansion head, the length of the operating rod is greater than the length of the protection device, and the operating handle enters from the inner port of the expansion head The protective tube protrudes from the outer port of the protective tube, and the operating rod inside the protective tube is provided with a support ball. The biopsy tool has the advantages of simple structure, convenient use, small trauma and the like.

The invention discloses a baby cream and a preparation process thereof. The baby cream includes: A phase material (water, a first moisturizing agent, a natural plant preservative, a first thickener, ethylenediamine disodium acetate, allantoin) ;Phase B (emollient oil blend, emulsifier, tocopheryl acetate); Phase C (second thickener, second humectant); first humectant includes glycerin, 1,2-pentanediol , at least one of sodium hyaluronate; the second moisturizer includes at least two of Rhodophyta algae extract, brown algae extract, and sorbitol; natural plant preservatives include Sargassum obtuse extract, flat enteromorpha Extract, at least two of Lactobacillus / Algal Extract Ferment; emollient oil blend includes Hydrogenated Polydecene, Caprylic / Capric Triglyceride, Squalane, Dimethicone, Brazil Nut Seed oil, at least two of the annatto seed oils. The baby cream of the invention has the advantages of high safety, mildness and non-irritation, long-lasting moisturizing and anti-cracking effect.

The invention provides a cosmetic additive and a preparation method and application thereof, belonging to the field of cosmetics. The cosmetic additive comprises the following components by weight percentage: 25-35% of colloidal silver solution, 55-70% of dipotassium azelaic acid solution, and 1-10% of SALIX ALBA bark extract. In the present invention, colloidal silver solution, dipotassium azelaic acid solution and SALIX ALBA bark extract are added to the components, and the mass ratio of the three can be controlled to achieve better oil control and bacteriostatic effect, and the obtained additive It has better stability, long antibacterial time, and can completely reduce the generation of dandruff; using the cosmetic additives provided by the present invention in shampoo and hair care products is not easy to cause allergies, has high safety, and has a wide range of applications .

The invention discloses a solar water heater heat collection pipe and relates to the technical field of solar energy. The solar water heater heat collection pipe comprises an outer pipe body and an inner pipe body. A vacuum layer is formed between the outer pipe body and the inner pipe body. The inner pipe body is a sleeve formed by pressing nano diamond alkene. The outer surface of the inner pipe body is sequentially provided with an infrared reflective layer, an absorption layer and a light transmittance protective layer from inside to outside. The invention also provides a manufacturing method of the solar water heater heat collection pipe. The manufacturing method comprises the following steps that the inner pipe body is manufactured; the infrared reflective layer is deposited; the absorption layer is coated; and the light transmittance protective layer is deposited, so that the solar water heater heat collection pipe is obtained. According to the solar water heater heat collection pipe and manufacturing method of the solar water heater heat collection pipe, the sleeve made from the nano diamond alkene serves as the inner pipe body of the heat collection pipe, and the heat conductivity of the nano diamond alkene is very high and reaches up to 120 W.K<-1>.cm<-1>, so that rapid heat conduction is achieved, energy sources are saved, and the using efficiency is improved.