公开(公告)号：US20230312440A1

公开(公告)日：2023-10-05

申请号：US18191225

申请日：2023-03-28

Applicant: ECOLAB USA INC.

Inventor： Jonathan MASERE ,  Zhenxing XI ,  Pedro Carvalho CAMPOS ,  David DIXON ,  Gregory Appel MELANCON, JR. ,  Ramon COLORADO, JR.

IPC: C07C7/20

CPC classification number: C07C7/20

Abstract: Inhibitor compositions for abating undesirable 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 the monomer. In some instances, the monomer is an ethylenically unsaturated monomer. Such ethylenically unsaturated monomers include, but are not limited to, vinyl acetate, acrylonitrile, acrylates, methacrylates, 1,3-butadiene, styrene, isoprene, (meth)acrylic acid, and combinations thereof. Methods of preparing the polymerization inhibitors and compositions of the disclosure are also provided.

公开(公告)号：US20230312770A1

公开(公告)日：2023-10-05

申请号：US18191262

申请日：2023-03-28

Applicant: ECOLAB USA INC.

Inventor： Jonathan MASERE ,  Zhenxing XI ,  David DIXON ,  Gregory Appel MELANCON, JR. ,  Ramon COLORADO, JR. ,  Peter WEBBER

IPC: C08F2/40

CPC classification number: C08F2/40

Abstract: Polymerization inhibitor compositions are provided. The polymerization inhibitor compositions include at least a first inhibitor compound including a hydroxylamine, a second inhibitor including phenylenediamine, and a third inhibitor including a benzoquinone or naphthoquinone. 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 the monomer. In some instances, the monomer is an ethylenically unsaturated monomer. Such ethylenically unsaturated monomers include, but are not limited to, vinyl acetate, acrylonitrile, acrylates, methacrylates, 1,3-butadiene, styrene, isoprene, (meth)acrylic acid, and combinations thereof. Methods of preparing the polymerization inhibitors and compositions of the disclosure are also provided.