SETT ATT I VATTENDISPERSION POLYMERISERA VINYLKLORID MED ANVENDNING AV EN AVLAGRINGSINHIBITOR

1497515 Prevention of polymer build-up SOLVAY ET CIE 6 Aug 1976 [18 Aug 1975] 32904/76 Heading C3P Polymer build-up on reactors during the aqueous dispersion polymerization of alpha, beta ethylenic monomers containing halogen, is prevented by carrying out the polymerization in the presence of a wate...

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Bibliographic Details
Main Authors L CLERBOIS, S NOEL, D TYTGAT
Format Patent
LanguageSwedish
Published 15.08.1983
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:1497515 Prevention of polymer build-up SOLVAY ET CIE 6 Aug 1976 [18 Aug 1975] 32904/76 Heading C3P Polymer build-up on reactors during the aqueous dispersion polymerization of alpha, beta ethylenic monomers containing halogen, is prevented by carrying out the polymerization in the presence of a water-soluble metal salt which disassociates to give bromide or iodide ions. Preferred compounds are the bromides and iodides of Na, K, Li, Ca and Mg. The metal bromide or iodide may be added to the polymerization medium, and/or the reactor may be pre-purged with an aqueous solution of the salt. Examples describe the polymerization of vinyl chloride.
Bibliography:Application Number: SE19760009043