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US 12,534,561 B2Granted
Controlled radical polymerization
AssigneeBASF Coatings GmbH
InventorShampa R. Samanta
Life of this patent
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Abstract
Disclosed herein is a process for preparing a polymer by radical polymerization. More specifically, the process disclosed herein is for preparing a polymer by controlled radical polymerization.
Claims15
A process for preparing a polymer comprising at least the steps of
- i) preparing a polymerization mixture comprising
- a) at least one transition metal catalyst,
- b) at least one reducing agent, and
- c) at least one atom-transfer radical polymerization initiator;
- and
- ii) subsequently adding at least one free radically co-polymerizable monomer to the polymerization mixture to obtain the polymer;
- wherein the at least one free radically co-polymerizable monomer is added at a rate in the range of ≥0.08 wt. %/minute to ≤1.66 wt. %/minute, based on the total weight of the at least one free radically co-polymerizable monomer in step (ii);
- wherein step i) occurs without adding at least one free radically co-polymerizable monomer.
5 more elements
Dependencies are inferred from the claim text.