60 results about "Pentetic acid" patented technology

The invention discloses a special fertilizer for preventing and controlling hami melon fruit cracking and a preparation method of the special fertilizer. The fertilizer is formed by mixing the following substances in percentage by weight: 2 percent to 5 percent of disodium octaborate tetrahydrate, 40 percent to 60 percent of ethylenediamine tetracetic acid calcium sodium, 10 percent to 20 percent of ethylenediamine tetracetic acid magnesium sodium, 5 percent to 10 percent of diethylenetriamine pentaacetic acid ferrisodium, 5 percent to 10 percent of ethylenediamine tetracetic acid manganese sodium, 10 percent to 20 percent of ethylenediamine tetracetic acid zinc sodium, 2 percent to 5 percent of ethylenediamine tetracetic acid copper sodium, 0.2 to 0.5 percent of sodium molybdate dehydrate and 0.1 percent to 1.0 percent of solid surface active agents, and the total weight percentage is 100 percent. From the early fruit expansion period to the fruit maturation period of hami melons, the fertilizer is dissolved in water according to the quantity being 800 to 2500 times, the spraying on leaves is carried out for three times, and the interval is 10 days for each time. The fertilizer has the advantages that the fruit cracking rate of the hami melon can be effectively reduced, and meanwhile, the fruit quality of the hami melons can be improved.

The invention discloses a polymer nanoparticle magnetic resonance contrast agent which is prepared by the chelation of diethylenetriamine pentaacetic acid-polyethyleneglycol-polylactic acid polymer nanoparticle and gadolinium chloride GdCl3. The structural formula is showed as right, wherein m and n are integers. The molecular weight of the diethylenetriamine pentaacetic acid-polyethyleneglycol-polylactic acid polymer nanoparticle is from 10000 to 50000. The polymer nanoparticle magnetic resonance contrast agent has obvious development increase function, realizes targeting development by the property of PLA-PEG-DTPA-Gd nanoparticle, is a passive targeting administration system, and has the characteristics of specificity, selectivity, obvious biological effect, and the like. Taking the PLA-PEG nanoparticle as a carrier of DTPA-Gd, the contrast agent increases the local concentration of medicine on liver, enhances the curative effect, reduces toxic and side effect and achieves the purpose of targeting development.

The invention discloses a method for preparing a micron-order alumina fiber. The method comprises the following steps: adding deionized water into diethylenetriamine pentaacetic acid, heating in a water bath at 80 DEG C to completely dissolve the diethylenetriamine pentaacetic acid; adding aluminum nitrate, continuously stirring for 2-6 hours after precipitated is generated; aging for 4 hours, decompressing and filtering the precipitate, drying for 6 hours at a constant temperature of 80 DEG C to obtain an alumina fiber precursor; putting the alumina fiber precursor into a quartz crucible; heating in an air atmosphere at a temperature of 600-1,200 DEG C, and maintaining for 2 hours to obtain the micron-order alumina fiber. The method is simple, low in reaction temperature, short in time, low in price of equipment; the prepared material is large in draw ratio and excellent in thermal stability, and has excellent commercial application prospect.

The invention discloses a method for bleaching waste paper pulp. The method comprises the following steps of: (1) adding H2SO4 and NaHSO3 in deinked waste paper pulp to implement acidification pretreatment; and without washing, directly adding diethyl pentetic acid (DTPA) to implement chelation pretreatment; (2) washing the deinked waste paper pulp treated in step (1) and implementing sodium borohydride pretreatment; and (3) washing the deinked waste paper pulp treated in step (2), adding an acid-base buffering agent, implementing hydrogen peroxide bleaching, and washing, thereby obtaining the bleached waste paper pulp. Under a short-process bleaching technology condition, the bleaching property of the paper pulp is improved, the strength property of the paper pulp is enhanced, the problem that the strength property of waste paper fibers degrades in the traditional bleaching process is solved, the reuse times of the waste paper fibers are increased, and the resource and environment problems hampering the improvement of Chinese paper manufacturing industry can be solved.

This invention relates to a chemical synthesis. It provides a polymer contrast agent for magnetic resonance imaging: end aldehyde group polyoxyethylene-diethylenetriamine pentaacetic acid block polymer. Its preparing process is: firstly, reacting diisocyanate and end hydroxy polyoxyethylene-diethylenetriamine pentaacetic acid to obtain end isocyanate group polyoxyethylene-diethylenetriamine pentaacetic acid block polymer; secondly, reacting said polymer and hydroxy aldehyde to obtain end aldehyde group polyoxyethylene-diethylenetriamine pentaacetic acid block polymer crude product; finally, purifying said end aldehyde group polyoxyethylene-diethylenetriamine pentaacetic acid block polymer. This has simple process and high yield; end aldehyde group polyoxyethylene-diethylenetriamine pentaacetic acid block polymer has amphipathy, innocuity, stable, low immunogenicity, good biocompatibility, multi-species, freely-soluble water, biodegradeable; it has advantanges high relaxation rate, freely-soluble water, clear imaging and little toxicity.

The invention discloses a gel type moisturizing skin lotion and a preparation method thereof, and belongs to the technical field of cosmetics. The gel type moisturizing skin lotion is characterized bybeing prepared from, by weight, 4-15 parts of butanediol, 3-10 parts of glycerinum, 1-5 parts of hydrogenated lecithin, 0.1-3 parts of tocopheryl acetate, 1-3 parts of Chinese rehmannia glutinosa root extracts, 0.1-1 part of citric acid, 1-2 parts of cholesterol, 0.1-0.5 part of carbomer, 0.1-2 part of sodium citrate, 0.1-0.2 part of sodium hydroxide, 0.1-1 part of pentetic acid and the balance water. The hydrogenated lecithin, the tocopheryl acetate and the Chinese rehmannia glutinosa root extracts are compounded in use, synergy is achieved, and the moisturizing hydrating effects of the skinlotion are significantly improved. As the extracts of natural plants are added, the moisturizing and skin-nourishing effects are improved, and various functions of whitening, freckle removing, oxidation resisting, soothing, allergy resisting and the like are achieved at the same time. The raw materials are dissolved with alcohols, homogeneous emulsification is carried out at low temperature to make the effective ingredients in the raw materials fused with each other, and the gel type moisturizing skin lotion has delicate and smooth texture, and is easily and rapidly absorbed by the skin.

The invention belongs to the technical field of molecular imaging, and relates to a targeted nano magnetic resonance contrast agent for articular cartilage injury as well as preparation and application of the targeted nano magnetic resonance contrast agent. The structure of the contrast agent is HA-DTPA-Gd, hyaluronic acid HA and gadolinium ions Gd (III) are linked through diethylenetriamine pentaacetic acid DTPA, and the molecular structural formula of the contrast agent is shown in the formula (I). The contrast agent can be injected through an articular cavity, the size of the contrast agent is nanoscale, nanoparticles are combined with an extracellular matrix of a cartilage defect area based on the surface effect of the nanoparticles, specific aggregation in the cartilage injury area is easier, the enhancement degree of a focus area after MRIT1 weighted delay enhancement is more obvious than that of a clinical gadolinium-containing contrast agent, and therefore the cartilage injury focus can be accurately and visually displayed; improvement of accuracy and safety of clinical treatment is facilitated, the curative effect of a knee joint cartilage injury treatment mode is evaluated, and prognosis of a patient is evaluated.

The invention discloses a refreshing shower gel, belonging to the field of daily chemicals, comprising the following components and weight ratios: water 60-70, myristic acid 20-30, lauric acid 18-24, potassium hydroxide 16-23 , Potassium Chloride 14‑19, Sodium Laureth Sulfate 12‑17, Palmitic Acid 9‑16, Propylene Glycol 8‑13, Ethylene Glycol Distearate 7‑12, Fragrance 5‑10, Cocamide Propyl Betaine 5‑10, Hydroxypropyl Methyl Cellulose 4‑8, Pentetic Acid 4‑8, Menthol 4‑8, Tetrasodium EDTA 3‑7, Butylated Hydroxytoluene 3‑7, Apple Juice 3‑ 7. Citric Acid 3‑7, Trideceth‑9 3‑5, Bisabolol 3‑5, Lily Flower Extract 3‑5, PEG‑40 Hydrogenated Castor Oil 1‑3, Maltodextrin 1 ‑3. Methylchloroisothiazolinone 1‑3, which solves problems such as sweating and odor.

The invention relates to a simple preparation method of antimony phosphate of a mixed morphological structure. Diethylenetriamine pentaacetic acid and antimony trichloride are sequentially dissolved in deionized water, and full stirring is carried out at the water bath condition of the temperature of 60 DEG C; then ammonium dihydrogen phosphate is added, full stirring is carried out, and a precursor mixed solution is formed; the obtained precursor mixed solution is poured into a polytetrafluoroethylene-lined stainless steel hydrothermal reaction still, a constant-temperature hydrothermal reaction is carried out for 10 h at the temperature of 160 DEG C, centrifugal washing and drying are carried out, and the product is obtained. The method is simple, easy to operate, environmentally friendly, low in cost and pure in product, prepared antimony phosphate can efficiently remove organic pollutants in water, and good application prospects are achieved. The photocatalytic activity of prepared antimony phosphate is obviously higher than that of commercial rutile TiO2.

The present invention relates to a method for forming an ophthalmic composition comprising mixing at least one hydroxide and pentetic acid with water and at least one oxidatively unstable component to form an ophthalmic composition comprising at least one salt of diethylenetriamine pentaacetic acid and a pH between about 6 and about 8.

The invention provides a nano-lipidosome for magnetic resonance imaging of acute pancreatitis, wherein a lipid material in the nano-lipidosome includes a mannitol-modified distearyl phosphatidyl ethanolamine-polyethylene glycol copolymer and cholesterol, and the nano-lipidosome is rich in a lipid conjugate of a MRI T1 contrast agent diethylenetriaminepentaacetic acid gadolinium bismeglumine (DTPA(Gd)). The nano-lipidosome is targeted to a mannitol receptor on the surface of inflammatory macrophages, and achieves effective determination between normal pancreas and pancreas in acute pancreatitisby enhancing the MRI T1 signal of the macrophages at the lesion of the acute pancreatitis. Furthermore, by means of intensity change of the T1 signal value, the difference of number of the macrophages at the lesion can be determined, so that the nano-lipidosome can effectively distinguish lesser and severe acute pancreatitis.

The invention belongs to the field of daily chemicals. A kind of children's bath soap, is made up of the component of following percentage by weight: 70-90% sodium palm kernel oleate; 0.05-0.3% EDTA-4Na or pentetic acid pentasodium; 1-3% humectant sorbitol or glycerin; 0.1‑0.2% antioxidant; 0.2‑2.0% food coloring; 2‑5% glycerin; 0.5‑0.7% preservative; purified water to make up to 100%. The present invention has the function of bathing, and because food coloring is added, it is a colored soap, which can allow children to do graffiti in bathing and increase fun. Glycerin acts as a safe humectant to hydrate children's delicate skin.

A polyoxyvinyl-kind block polymer ligand used as the medical contrast medium for intravenous injection is prepared through the reaction between the benzoic acid with activated carboxyl or its derivative and the amino terminated block polyoxyethene modified ligand to obtain crude BEN-PEO-DTPA block polymer ligand, and purifying.

The invention discloses a masson pine 'paper pulp-rosin extraction' mode middle-term rosin extraction method which comprises the following steps: (1) selecting 15-year-old masson pine, extracting rosin according to a descending bilateral groove rosin extraction method, and spraying a rosin increasing agent to a newly cut wound surface by using a sprinkling can, the rosin increasing agent compriseslysine, magnesium chloride, zinc nitrate, ferric chloride, copper nitrate, borax, sodium chloride, ammonium molybdate, mannose, diethylene triamine pentaacetic acid, triethanolamine, naphthylacetic acid, 6-benzylaminopurine and distilled water; and (2) forming a middle ditch in the longitudinal central line of the cutting surface, mounting a rosin receiving container at the lower end of the middle ditch, collecting rosin according to a single-side strength rosin collecting method, reserving a nutrient zone, and completing rosin collecting 7 years before felling. According to the method, a descending type double-side ditch rosin extraction method is combined with a novel rosin increasing agent for tree single-side rosin extraction, and the problems of low rosin yield per unit area, low economic benefits and the like are solved.