PVC Production

PVC production employs the suspension polymerization process when manufacturing PVC. KURARAY POVAL™ is used in the initial process of creating the suspension solution with vinyl chloride monomer (VCM) and water. When used as a dispersing agent, KURARAY POVAL™ improves surface-active performance of VCM. It impacts PVC’s physical properties in a number of ways, including grain morphology, grain absorption, grain size, and bulk density. This allows PVC producers to create custom, specialized PVC grades for their end users.
         
As technology has improved, so has the speed of polymerization. Improved heat removal requires better dispersing agents compared to current market standards which use cellulose derivatives. Dispersing agents like KURARAY POVAL™ have become more and more critical in order to improve efficiency during the suspension polymerization process.
        

Kuraray L- and LM-Series for Precise Primary and Secondary Suspension Agents

PVC production employs the suspension polymerization process when manufacturing PVC. KURARAY POVAL™ is used in the initial process of creating the suspension solution with vinyl chloride monomer (VCM) and water. When used as a dispersing agent, KURARAY POVAL™ improves surface-active performance of VCM. It impacts PVC’s physical properties in a number of ways, including grain morphology, grain absorption, grain size, and bulk density. This allows PVC producers to create custom, specialized PVC grades for their end users.

As technology has improved, so has the speed of polymerization. Improved heat removal requires better dispersing agents compared to current market standards which use cellulose derivatives. Dispersing agents like KURARAY POVAL™ have become more and more critical in order to improve efficiency during the suspension polymerization process.

Kuraray’s secondary suspending agents (LM-series) improve the porosity of these systems. In addition to the porosity, the control of bulk density (BD) or apparent density (AD), which mainly depends on porosity, grain shape, and grain size, is critical to the PVC processor, who is concerned with charge size, cycle times in high-speed mixers, output rates, motor torque, and degree of gel formation in extruders.

Rigid to Flexible, Kuraray PVOH has you covered

Using Kuraray’s primary and secondary suspending agents, PVC manufacturers produce a versatile range of PVC polymers which can vary in morphology and K-value, according to the intended end application. Our expertise in the development of primary and secondary suspending agents enables us to support our customers in processing rigid or flexible formulations as well as low K-value formulations.

Rigid formulations are used to produce pipes, conduit, sheet, and window profiles. Flexible formulations allow for flexible sheet, flooring, wallpapers, cable coverings, hoses, tubing, and medical products. Low K-value formulations are ideal for injection molding processes, conduit fittings, and integral electrical plugs.


PROPERTIES

  • Improved uniformity of vinyl chloride particles
  • PVC has improved porosity in grains
  • Improved dispersant of VCM droplets
  • Environmentally friendly
  • Increased surface-active properties

APPLICATIONS

  • Primary and secondary dispersant
  • Cellulose derivative replacement
  • Customizable PVC grades