PVC Production

Kuraray has a long history in the development of polyvinyl alcohol (PVA or PVOH) based suspending agents, especially for the needs of PVC manufacturers. In these applications polyvinyl alcohol is used as a protective colloid for the polymerization of PVC: vinyl chloride monomer is suspended in water by means of stirring in combination with a suspending agent to allow the polymerization reaction to proceed. The physical properties of the resulting PVC, including size, shape of the grains and bulk density, are directly related to the grain forming process during polymerization.

Kuraray’s primary and secondary suspending agents allow precise control of the grain formation and its resulting structure and morphology. Furthermore, the surface ac­tive performance can be widely optimised by selecting an appropriate combination of Kuraray’s suspending agents. This diversity enables the PVC manufacturer to produce a very versatile range of PVC resins, varying in morphology and K value according to the intended end application.

materials used in medicine


Kuraray’s secondary suspending agents (LM-series) improve the porosity of 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, which is concerned with charge size, cycle times in high speed mixers, output rates, motor torque and degree of gel formation in extruders.

Kuraray’s secondary suspending agents (LM-series)are solid grades, which are self-dispersible in cold water. LM-series can be charged directly into the reactor at any concentration as a dispersion.

Contact Kuraray Poval™

Contact Kuraray Poval™

Please contact us if you would like more information.

Telephone: +49 (0) 69 305 85343
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Contact Kuraray Poval

Please use our request form to order your Kuraray Poval™ sample