46results about How to "Effective through" patented technology

The invention relates to agricultural polyvinyl chloride shed film exclusively used for the fruit trees, which can adjust the transmitted spectrum of the sunlight in the greenhouse, promote the photosynthesis of the fruit trees, and improve the fruit quality and output. Polyvinyl chloride resin is taken as the basal body of the agricultural polyvinyl chloride shed film exclusively used for the fruit trees, plasticizer, heat stabilizer, ultraviolet absorber, compound dripless agent, organosilicon antifogging agent, hindered amine light stabilizer and light conversion agent, etc. are added in the basal body, and then the agricultural polyvinyl chloride shed film exclusively used for the fruit trees is prepared through the production process steps of reducing and tentering, etc. The invention can overcome the deficiency that the polyvinyl chloride film is produced by utilizing the ultraviolet absorber as the light stabilizer, during the novel polyvinyl chloride function film production, a method that the hindered amine light stabilizer and the light conversion agent with reasonable compounding ratio are added is adopted, to ensure that the light transmittance of the film is improved in a certain wavelength range, to play the effect on promoting the fruit coloring of the fruit tree in the shed.

The invention relates to a transparent medical PVC material suitable for wide-wave shading and a preparation method thereof. The PVC material is composed of, by weight, 100 parts of suspension-method PVC resin, 50-75 parts of plasticizers DEHP and TOTM, 1.0-2.0 parts of a Ca / Zn thermal stabilizer, 8-12 parts of an auxiliary thermal stabilizer, 0.5-1.0 part of a lubricant and 0.01-0.05 parts of a shading agent. The shading wave length range of the PVC material is increased to 220-550 nm and the light transmittance reaches not less than 0%. The PVC material solves the problems of narrow shading range (220-450 nm) and low light transmittance (less than 30%) which exist in the shading medical PVC materials in the prior art, thereby satisfying the higher clinical application demands in a shading transfusion device.

The invention discloses a whitening composition and a preparation method thereof. The preparation method of the whitening composition, provided by the invention, comprises the following steps of (1) adding an oil phase into a water phase to obtain a mixture A; (2) adding 1-20 wt.% of a co-emulsifier into the mixture A prepared in the step (1) to obtain a mixture B; (3) shearing and emulsifying themixture B prepared in the step (2) to obtain a dispersion C; and (4) performing high-pressure homogenization or high-speed microjet on the dispersion C prepared in the step (3) to obtain the whitening composition. The wt.% refers to the percentage by mass of a certain component relative to all components in the whitening composition. The whitening composition has the advantages of better encapsulation efficiency, better melanin inhibition effect, better skin permeability and retentivity, and lower toxicity, and the components in the whitening composition have a synergistic effect.

The invention relates to a phenyl-modified PDMS separation membrane, a preparation method and its application in the separation of aromatic compounds, belonging to the technical field of separation membrane materials. The technical scheme of the present invention is to construct a high-speed permeation transmission channel for aromatic molecules by introducing a rigid spacer in the polysiloxane chain segment. The hindrance promotes the higher mobility of the remaining methyl groups, and at the same time, the larger phenyl group inhibits the cooperative movement between the polymer main chains, thereby inhibiting the entanglement between the chain segments, increasing freedom and lower transmission. The mass resistance allows the aromatic substances closer to the free volume of the polymer to be rapidly transported in the membrane.

The invention discloses a wall decoration material with a formaldehyde decomposition function and a preparation method thereof. The wall decoration material is wallpaper or wall cloth and comprises base material and a decorative pattern layer; the decorative pattern layer is an ink layer or a foamed plastic layer; the wall decorative material further comprises micro-powder particles; the micro-powder particles are bonded and fixed on the decorative pattern layer; the mass of the micro-powder particles on each square meter of wall decorative material is 0.1-8g; the micro-powder particles comprise the following components in weight percentage: 1-50 percent of silica aerogel micro-powder particles and 50-99 percent of nanometer titania micro-powder particles. As most of the nanometer titania micro-powder particles are dispersed in the silica aerogel micro-powder particles, the contact area between air which is polluted by formaldehyde and the nanometer titania micro-powder particles on the wall decorative material surface is enlarged, thus, the nanometer titania micro-powder particles can be fully in contact with the formaldehyde to perform catalytic reaction, thereby playing the role of purifying the indoor air.

The invention relates to the technical field of medical devices, in particular to a catheterization device for urological surgery, which includes a urine storage bag, a clip is installed on the outer wall of the urine outlet tube at the bottom of the urine storage bag, and the urine storage bag There is a hanging loop glued on the top. The catheterization device for urological surgery can easily pass the balloon tube through the urethra and enter the bladder through the guide wire in the dredging device. In narrow and curved places in the road, the transparent catheter is wound on the coil spring through the coil spring of the revolving device, and the coil spring will shrink when the patient moves or inadvertently pulls the transparent catheter, which not only makes it easier and more convenient to introduce the transparent catheter , will not cause pain or even damage to the urethra of the patient, and at the same time can monitor the urine and internal pressure in the bladder in real time, and avoid the phenomenon of loosening or even falling off of the transparent catheter, which has strong practicability.

The invention provides a nano drug applicable to leaf spraying to prevent and treat citrus huanglongbing. The nano drug comprises the following preparation raw materials in parts by weight: 100-1000 parts of polyoxyethylene castor oil, 1-100 parts of Span 80, 90-1800 parts of ethyl acetate, 1-100 parts of Tween 80, 10-1000 parts of 0.1mg / ml-2.0mg / ml ampicillin and 1000-250000 parts of a de-ionized water solution containing Brij 35. A preparation method comprises the following steps: injecting an organic phase into a water phase; stirring to uniformly disperse all components of the organic phase into the water phase; stirring under ultrasonic wave so as to balance a system to form water-in-oil nano-emulsion; carrying out reduced pressure distillation to completely remove the organic solvents in the system; and dissolving a distilling mother solution into the de-ionized water solution containing Brij 35. According to the formula of the drug, the drug can relatively effectively penetrate through leaf surfaces so that huanglongbing pathogenic bacteria in the citruses can be effectively removed.