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                                           Item
                                          Specification
                     
                                      model
                                          1788
                                          2488
                     
                                      Fineness
                                          120mesh
                                          120mesh
                     
                                      Viscosity (4% aqueous solution)
                                          20.5-24.5
                                          45-55
                     
                                      Alcoholysis degree mole%
                                          87.0-89.0
                                          87.0-89.0
                     
                                      Ash %max
                                          0.4
                                          0.3
                     
                                      Volatile content %max
                                          5
                                          5
                     
    

Polyvinyl alcohol powder is a water-based adhesive with excellent performance. Generally, the product is flake, granular or turbulent, and it must be heated when it is difficult to dissolve in cold water. After it is finely pulverized and surface treated, it can have better cold water solubility. However, due to its thermoplasticity, it has high requirements for crushing processing. Yida adopts a unique liquid nitrogen low-temperature cooling process to ensure uniform fineness of powdered materials, so that it has excellent water solubility and cohesive force.

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