As the name suggests, polyvinyl chloride (PVC) paste resin,also named :Plasticized paste, is mainly used in the form of paste. People often call this paste plasticized paste. It is a unique liquid form of PVC plastic in the unprocessed state. Paste resins are often obtained by emulsion and micro suspension. Pvc Paste Resin,Pvc Paste,Paste Pvc Resin,Pvc Resin Paste Grade Henan Chuange Industry CO.,LTD , https://www.chuangegroup.com
According to reports, the invention involves the benzoic acid being placed in a supported transition metal ruthenium catalyst, supercritical carbon dioxide, and cyclohexylformic acid, and undergoing a ring-catalyzed reaction in contact with hydrogen; after the reaction, the solubility of cyclohexylcarboxylic acid in supercritical carbon dioxide is applied to Extraction is performed to separate the catalyst from the product. The process has the advantages of mild reaction conditions, clean reaction process, less organic solvent, high yield, and good product quality.
Cyclohexylcarboxylic acid and its derivatives are important intermediates for organic chemical raw materials and synthetic drugs, and have wide application value in the research and development of new materials and drugs. Cyclohexylcarboxylic acid can be obtained from the catalytic hydrogenation of benzoic acid. The traditional benzoic acid hydrogenation process uses palladium as a catalyst and is performed at a temperature of 160° C. to 200° C., which has the disadvantages of high reaction temperature, complicated process, and low reaction selectivity.
Due to its fine particle size, PVC paste resin is like talc powder and has no fluidity. PVC paste resin is mixed with Plasticizer and stirred to form a stable suspension, that is, PVC paste, or PVC plasticized paste and PVC sol, which is used to process into final products. In the paste making process, various fillers, diluents, heat stabilizers, foaming agents and light stabilizers are added according to the needs of different products.
The development of PVC paste resin industry provides a new type of liquid material that can be transformed into PVC products only by heating. The liquid material has the advantages of convenient configuration, stable performance, easy control, convenient use, excellent product performance, good chemical stability, certain mechanical strength and easy coloring. Therefore, it is widely used in the production of artificial leather, enamel toys, soft trademarks, wallpaper, paint coatings, foamed plastics, etc.
The new method for the synthesis of cyclohexylcarboxylic acid by the hydrogenation of benzoic acid developed by the Changchun Institute of Applied Chemistry of the Chinese Academy of Sciences was recently authorized by the national invention patent.