8results about How to "Post-processing is simple" patented technology

This invention provides a spatial acoustic wave manufacturing device, including a frame, an acoustic wave generating module, and a control module. The frame is equipped with a first X-axis guide rail, a second X-axis guide rail, a first Y-axis guide rail, a second Y-axis guide rail, a rotary platform, a Z-axis stepping electric cylinder, a robotic arm, and an ultrasonic actuating head. The control module and the above structures form a multi-degree-of-freedom motion system. This device enables the liquid tank carrying the workpiece and the ultrasonic actuating head to perform precise, multi-axis linkage relative motion in space, allowing the acoustic wave focus to be accurately positioned and continuously moved in three-dimensional space. This enables non-contact processing of workpieces with complex curved surfaces such as overhangs, internal cavities, spiral flow channels, and honeycomb grids, and allows printing without any physical support materials.

The application discloses an asymmetrically modified camphor skeleton Ni complex and a synthesis method and application thereof. The complex has a structure as shown in the formula I. The complex has good catalytic activity and thermal stability in catalyzing an olefin polymerization reaction, and the polymer obtained by catalysis has high molecular weight and polyethylene branching degree, and the obtained polyethylene material has good elastic performance.

The application discloses a halogenated butyl rubber in-situ dispersion composite material and a preparation method thereof, and the preparation method comprises the following steps: mixing halogenated butyl rubber with a rubber good solvent to obtain a glue solution; mixing and shearing carbon black and an additive with a carbon black good solvent to obtain a carbon black slurry; and mixing the glue solution and the carbon black slurry at room temperature and performing reduced pressure distillation to obtain the halogenated butyl rubber in-situ dispersion composite material. The application directly prepares a rubber mixture by using a full formula system, replaces a wet ball milling method, adopts high shear dispersion, improves efficiency, realizes room temperature reaction in the whole process, greatly reduces energy consumption, simplifies post-processing, removes a solvent in one step, does not need to open the rubber mixture and remove a volatile component, improves the uniformity of filler dispersion, simultaneously improves air tightness, flex fatigue life and mechanical strength, and achieves unexpected technical effects.

The invention relates to the field of herbicide preparation, and discloses a preparation method of pyrazosulfuron, and the preparation method comprises the following steps: S1, in the presence of an alkaline substance 1 and a solvent, mixing 1, 3-dimethyl-5-hydroxypyrazole and 2-methylsulfonyl-4-trifluoromethyl benzoyl chloride, and carrying out an esterification reaction; s2, dehydrating the reaction product obtained in the step S1; s3, in the presence of an alkaline substance 2 and a catalyst, carrying out rearrangement reaction on the dewatered product obtained in S2; and S4, desolventizing and purifying the reaction product obtained in S3 to obtain the pyrazosulfuron. The one-pot method is adopted to prepare the pyrazosulfuron, so that the condition that an ester intermediate needs to be obtained from an esterification product in a post-treatment mode of thermal stratification or filtration is avoided, operations such as secondary powder recovery of the ester intermediate are avoided, the process is simplified, post-treatment equipment is reduced, and the yield is increased.

This invention relates to a rectangular jacking pipe oblique receiving section, comprising a first receiving section and a second receiving section. The first receiving section includes a rectangular pipe body with multiple first embedded parts on its inner wall and a tie-bar reinforcement zone at each of the four corners. A second embedded part is located on each side of one end of the rectangular pipe body, and an anchor bar is located on one side of each second embedded part. Adjacent rectangular pipe bodies are fixedly connected by the first embedded parts. The second receiving section has multiple third embedded parts on its inner wall and a pre-embedded steel plate at one end. The first and second receiving sections are fixedly connected by the third embedded parts, with a connecting seam in the middle. This rectangular jacking pipe oblique receiving section offers advantages such as improved reliability, reduced cost, simplified construction, increased application range of large-angle oblique rectangular jacking pipes, and improved bending strength.

The application provides a preparation method of 2,3-dimethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborinane-2-yl)pyridine. The method can reduce the use amount of borate, reduce the cost, reduce the three wastes, and make the effective content of the product higher.

The invention discloses a synthetic method of 2,6-difluoroaniline, having the following steps: ①2,6-difluorobenzamide and trichloroisocyanuric acid are in a first solvent, and a first reaction is carried out at a first temperature, and then an intermediate is obtained through a first post-processing; ②the intermediate obtained in step ① is in an alkaline solution, and a second reaction is carried out at a second temperature, and then 2,6-difluoroaniline is obtained through a second post-processing. The method of the present invention can be separated in advance to obtain an intermediate chloro product, so that the risk of material impact can be avoided, and the safety is relatively high, and trichloroisocyanuric acid is stable and easy to measure, and compared with the sodium hypochlorite method, the operation is simpler. The method of the present invention can also obtain 2,6-difluoroaniline with higher purity without rectification, which not only greatly simplifies post-processing, but also produces less waste water, is more environmentally friendly, and is suitable for industrial production.

The invention relates to a preparation method of high-purity 3, 7-diamino-2, 8-dimethyl dibenzothiophene sulfone, and belongs to the technical field of medicines and chemistry. The invention provides a preparation method of high-purity 3, 7-diamino-2, 8-dimethyl dibenzothiophene sulfone, and the reaction is as follows: # imgabs0 # comprises the following steps: step 1, in an organic solvent, reacting a compound as shown in a formula 1, concentrated sulfuric acid and a sulfonating reagent under the action of a Lewis acid catalyst to obtain a compound as shown in a formula 2; the route provided by the invention is simple to operate, free of harsh reaction conditions, high in yield, high in purity, simple to operate, low in energy consumption, good in selectivity, good in reproducibility, capable of effectively reducing the cost and beneficial to industrial large-scale production, thereby having better market value and profound practical significance.