公开(公告)号：US20230312477A1

公开(公告)日：2023-10-05

申请号：US18191507

申请日：2023-03-28

Applicant: ECOLAB USA INC.

Inventor： Zhenxing XI ,  Pedro Jorge Carvalho CAMPOS ,  Debby ROSSANA ,  Jonathan MASERE

IPC: C07D227/08 ,  C07C211/51

CPC classification number: C07D227/08 ,  C07C211/51

Abstract: Inhibitor compositions for abating undesirable polymerization in the vapor space during purification of reactive vinylic monomers are provided. The polymerization inhibitor compositions include at least a first inhibitor compound having a stable nitroxide radical and a second inhibitor including phenylenediamine. Methods of inhibiting the polymerization of monomers in the vapor-space using the compositions of the disclosure are also provided.

公开(公告)号：US20230312441A1

公开(公告)日：2023-10-05

申请号：US18191468

申请日：2023-03-28

Applicant: ECOLAB USA INC.

Inventor： Zhenxing XI ,  Pedro Jorge Carvalho CAMPOS ,  Debby ROSSANA ,  Jonathan MASERE

IPC: C07C7/20 ,  C09K15/30 ,  C09K15/18 ,  C07C7/08 ,  B01D3/40

CPC classification number: C07C7/20 ,  C09K15/30 ,  C09K15/18 ,  C07C7/08 ,  B01D3/40

Abstract: Inhibitor compositions for abating undesirable emulsion polymerization during processing of hydrocarbon stream laden with reactive vinylic monomers are provided. The polymerization inhibitor compositions include at least a first inhibitor compound having a stable nitroxide radical and a second inhibitor including phenylenediamine. Methods of inhibiting the polymerization of monomers using the compositions of the disclosure are also provided. The methods of inhibiting polymerization of monomers include a step of adding a composition of the disclosure to a process stream. The process stream includes an ethylenically unsaturated monomer that is suspended in the bulk-phase and highly polar solvents as distractive distillation solvents.