54 results about "Long acting release" patented technology

The invention discloses a microcapsule aqueous suspension of the herbicide sethoxydim and a preparation method thereof. It is a sustained-release microcapsule aqueous suspension that adopts the complex coacervation method, uses sethoxydim as the core material, and uses gelatin and gum arabic as the wall materials. The preparation process of the present invention is simpler and more convenient, and the wall material used has the advantages of non-toxicity and biodegradability; the microcapsule water suspension has achieved a high degree of product stability, long-acting slow-release of active ingredients, and has anti-drifting and super high-efficiency , low toxicity, economy and safety features, it is a kind of green and environment-friendly preparation. The microcapsules provided by the invention can be widely used in the control and control of monocotyledonous weeds in dicotyledonous crop fields.

The invention relates to the field of compound fertilizers for crops and in particular relates to a long-acting slow-released compound fertilizer for improving the quality of sesame. The compound fertilizer is prepared from the following raw materials by weight parts: 28-30 parts of urea, 10-12 parts of calcium superphosphate, 25-28 parts of potassium sulfate, 8-10 parts of ground cereals, 30-35 parts of organic compost, 2-3 parts of shrimp shell meal, 10-20 parts of ammonium nitrate, 1-3 parts of copper sulfate, 2-3 parts of zinc sulfate, 1-2 parts of lignosulfonate, 0.1-0.2 part of nanocarbon, 0.01-0.02 part of sodium benzoate, 10-13 parts of an organic silicon emulsion, 5-6 parts of dry jackfruit shells, 0.1-0.2 part of titanyl sulfate, 10-12 parts of plant ash, 5-7 parts of dry thinleaf adina fruit rhizomes, 3-5 parts of bauxite, 0.01-0.02 part of calcium propionate and 3-5 parts of aids. According to the slow-released compound fertilizer, an adsorbent is prepared from the raw materials such as the dry jackfruit shells and the dry thinleaf adina fruit rhizomes, organic matter fermenting liquid with rich active ingredients and the raw materials such as the aids are mixed with the adsorbent, and the effects of controlling the fertility and improving the fertilizer efficiency are achieved by virtue of a slow-released coating agent, so that the utilization rate of nutrients in the sesame is high, the nutrients are quickly accumulated, the product quality is improved, and the planting benefit is high.

The invention provides a nifedipine long-acting sustained-release pellet, which comprises the following materials in parts by weight: 8-12 parts of nifedipine, 30-49 parts of welan gum, 5-10 parts of stearic acid, polyethylene glycol Diol 4000 15-20 parts, sorbitol 10-15 parts, lactose 5-10 parts, lubricant 2-5 parts. The preparation method is as follows: firstly, the nifedipine dispersion is prepared with polyethylene glycol and sorbitol as the carrier, then mixed evenly with other raw materials in the sustained-release pellets, added with ethanol aqueous solution to moisten to obtain a soft material, and then the The soft material is respectively prepared into a spherical product through an extrusion machine and a spheronizer, and dried at 45-50° C. for 20-30 hours to obtain sustained-release pellets. The preparation method of the invention is simple, easy to be prepared in large quantities, and the process reproducibility is good. The obtained long-acting sustained-release pills are uniform and stable, can effectively control the release speed of the medicine, and basically have no stimulating effect on the gastrointestinal mucosa.