Patent ID: 11952454
Assignee: COVESTRO LLC
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 12:
13. The process of claim 1, wherein the PMPO is continuously produced by a process comprising:
(1) providing a heterogeneous mixture of preformed stabilizer and, optionally, a chain transfer agent, with the base polyol, an ethylenically unsaturated monomer, and a free radical polymerization initiator to the continuous PMPO reactor;
(2) maintaining the mixture in the continuous PMPO reactor at a temperature sufficient to initiate a free radical reaction, and under sufficient pressure to maintain only liquid phases in a reaction zone, for a period of time sufficient to react at least a major portion of the ethylenically unsaturated monomer to form a heterogeneous mixture containing the PMPO, unreacted monomers and chain transfer agent, and
(3) stripping the unreacted monomers and diluent from the PMPO to recover the unreacted monomers and diluent.