Co-metering of organic initiators and protective colloids during polymerization reactions
AssigneeAkzo Nobel N.V.
InventorsHans Westmijze, Koen Antoon Kornelis Vanduffel, Lambertus Meulenbrugge, Andreas Petrus Van Swieten
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Abstract
The invention pertains to a process wherein initiators and protective colloids are both metered to a polymerization mixture. This manner of metering allows for improved control of the polymerization rate and an improved reactor space-time yield, and the process will render a polymer with a relatively high porosity.
Claims11
A process of polymerizing a polymerization mixture comprising at least one monomer wherein at least an organic initiators and 0.01-1 wt. % of a protective colloid, based on the weight of the monomers to be polymerized, are metered to the polymerization mixture at a polymerization temperature.
The process according to any one of the preceding claims wherein the initiator and the protective colloid are at least partially metered simultaneously.
The process according to any one of the preceding claims wherein the metering of the initiator and the protective colloid is controlled such that the maximum cooling capacity of the reactor is used.
The process according to any one of the preceding claims wherein the polymerization time of a batch process or the residence time of a continuous process is shorter than 4 hours.
Dependencies are inferred from the claim text.