| 摘要 |
The present invention relates to a new process for preparing PVC in aqueous suspension wherein the polymerisation reaction of monovinyl chloride is conducted in the presence of: a) a suspending system A comprising at least one polyvinyl alcohol having a hydrolysis degree between 25% and 98%, an acrylic polymer and, optionally, a polymeric plasticizer; and b) a suspending system B comprising at least one polyvinyl alcohol having a hydrolysis degree between 25% and 70% and a hydrotalcite compound.
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