PROCESS FOR THE PRODUCTION OF PVC IN AQUEOUS SUSPENSION USING A MIXTURE OF INITIATORS AND AN ACTIVITY CONTROL AGENT

The present invention relates to processes for the production of PVC, and in particular provides a process for the production of PVC by polymerisation of vinyl chloride which comprises (a) Reacting an acyl halide with a peroxide in a reactor to form a diacyl peroxide, (b) In the same reactor, and wi...

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Bibliographic Details
Main Author HERMANT, Thomas
Format Patent
LanguageEnglish
French
Published 27.06.2024
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Summary:The present invention relates to processes for the production of PVC, and in particular provides a process for the production of PVC by polymerisation of vinyl chloride which comprises (a) Reacting an acyl halide with a peroxide in a reactor to form a diacyl peroxide, (b) In the same reactor, and without removing the diacyl peroxide formed in step (a), reacting an alkyl haloformate with a peroxide, to form a dialkyl peroxydicarbonate, and to produce a mixture comprising the diacyl peroxide and the dialkyl peroxy dicarbonate, and (c) using the mixture comprising the diacyl peroxide and the dialkyl peroxydicarbonate as an initiator mixture for the polymerisation of vinyl chloride. La présente invention concerne des procédés de production de PVC, et en particulier un procédé de production de PVC par polymérisation de chlorure de vinyle qui consiste à (a) faire réagir un halogénure d'acyle avec un peroxyde dans un réacteur pour former un peroxyde de diacyle, (b) dans le même réacteur, et sans retirer le peroxyde de diacyle formé à l'étape (a), faire réagir un haloformiate d'alkyle avec un peroxyde, pour former un peroxydicarbonate de dialkyle, et pour produire un mélange comprenant le peroxyde de diacyle et le peroxydicarbonate de dialkyle, et (c) utiliser le mélange comprenant le peroxyde de diacyle et le peroxydicarbonate de dialkyle en tant que mélange initiateur pour la polymérisation de chlorure de vinyle.
Bibliography:Application Number: WO2023EP85334