Method for producing polyvinylchloride particles
Abstract
Abstract VINYL CHLORIDE POLYMER HAVING A COMPOSITE STRUCTUTE IN WHICH THE AVERAGE POLYMERIZATION DEGREE OF MOLECULES CONSTITUTING UNIT PARTICLES LOWERS FROM THEIR RESPECTIVE CENTRAL PORTIONS TOWARDS THE CIRCUMFERENTIAL PORTIONS IS OBTAINED BY ELEVATING THE POLYMERIZATION TEMPERATURE OR BY ADDING A CHAIN TRANSFER AGENT TO THE POLYMERIZATION SYSTEM IN THE COURSE OF EMULSION POLYMERIZATION OF VINYL CHLORIDE. PLASTISOL PREPARED FROM THE VINYL CHLORIDE RESIN OBTAINED BY SUBJECTING THE POLYMER LATEX TO SPRAY DRYING HAS LOWER GELATION TEMPERATURE THAN THAT OF A PLASTISOL PREPARED FROM VINYL CHLORIDE POLYMER OBTAINED ACCORDING USUAL PROCESSES, AND IS VERY USEFUL FOR VARIOUS USES SUCH AS COATING, DIPPING AND SLUSH MOLDING.
Inventors
- 👤 Akihide Nakamura
- 👤 Mutuo Goto
- 👤 Iko Ito
Bibliographic Details
Claims Analysis
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