公开(公告)号：US20240327554A1

公开(公告)日：2024-10-03

申请号：US18621652

申请日：2024-03-29

Applicant: BRASKEM AMERICA, INC.

Inventor： Sarah Mitchell ,  Hadi Mohammadi ,  Kimberly Miller McLoughlin

IPC: C08F210/02

CPC classification number: C08F210/02 ,  C08F2800/20 ,  C08F2810/20

Abstract: The invention relates to a polymerizable composition, comprising a crosslinker comprising a —Sn- moiety and having at least two polymerizable groups, wherein n is an integer of from 2 to 8; one or more monomers, each monomer having at least one C═C double bond capable of undergoing a polymerization reaction; and a polymerization initiator. The invention also relates to methods of making a reversibly-crosslinked polymer by reacting the components of the polymerizable composition, and the resulting reversibly-crosslinkable polymer and its reprocessing/recycling.

公开(公告)号：US20230357456A1

公开(公告)日：2023-11-09

申请号：US18142234

申请日：2023-05-02

Applicant: BRASKEM AMERICA, INC.

Inventor： Kimberly Miller McLoughlin ,  Vladimir Pushkarev ,  Sarah Mitchell ,  Geoffrey Lyne

IPC: C08F8/00

CPC classification number: C08F8/00

Abstract: The invention relates to a free-radical initiator composition for polyolefin modification comprising a peroxide-modified inorganic solid particle prepared from: i) a liquid or solution of hydrogen peroxide, and ii) one or more inorganic solid particles, wherein the inorganic solid particles have affinity to the hydrogen peroxide through hydrogen bonding. The invention also relates to a method for preparing a peroxide-modified inorganic composition, comprising mixing a liquid or solution of hydrogen peroxide and one or more inorganic solid particles to form a suspension or gel, and optionally, filtering the suspension or gel and drying the filtered materials to form a solid, peroxide-modified inorganic composition.

公开(公告)号：US20230357458A1

公开(公告)日：2023-11-09

申请号：US18142313

申请日：2023-05-02

Applicant: BRASKEM AMERICA, INC.

Inventor： Geoffrey Lyne ,  Kimberly Miller McLoughlin ,  Sarah Mitchell

IPC: C08F8/42 ,  C08K3/22 ,  C08F6/26 ,  C08F110/06 ,  C08J3/20 ,  C08J3/24

CPC classification number: C08F8/42 ,  C08K3/22 ,  C08F6/26 ,  C08F110/06 ,  C08J3/201 ,  C08J3/24 ,  C08K2003/2296 ,  C08F2500/12 ,  C08F2500/30 ,  C08F2500/31 ,  C08F2810/20 ,  C08J2323/12

Abstract: This invention relates to a process for modifying an olefin polymer composition, comprising melt mixing an olefin polymer composition with a free-radical initiator composition comprising a metal peroxide powder, wherein the free-radical initiator composition initiates a free-radical reaction of the olefin polymer composition to produce a modified olefin polymer composition. The invention also relates to a modified olefin polymer composition prepared by the process and various articles formed from the modified olefin polymer composition.

公开(公告)号：US20250129194A1

公开(公告)日：2025-04-24

申请号：US18918873

申请日：2024-10-17

Applicant: BRASKEM AMERICA, INC.

Inventor： Sarah Mitchell ,  Kimberly McLoughlin ,  Michelle K. Sing ,  Hadi Mohammadi

IPC: C08F255/02 ,  C08F263/04 ,  C08J3/20 ,  C08J3/24

Abstract: The invention relates to a crosslinked polymerized composition, comprising a crosslinker comprising a —Sn— moiety and having at least two polymerizable groups, wherein n is an integer of from 2 to 8, and one or more polymers. The invention also relates to methods of making a reversibly-crosslinked polymer by reacting the components of the polymerized composition via a reactive extrusion process, resulting in reversibly-crosslinked polymer having dynamic crosslinks.

公开(公告)号：US20230357516A1

公开(公告)日：2023-11-09

申请号：US18142245

申请日：2023-05-02

Applicant: BRASKEM AMERICA, INC.

Inventor： Kimberly Miller McLoughlin ,  Geoffrey Lyne ,  Sarah Mitchell

IPC: C08J3/21 ,  C08J11/16

CPC classification number: C08J3/212 ,  C08J11/16 ,  C08J2323/12 ,  C08J2323/06

Abstract: The invention relates to a process for modifying an olefin polymer composition comprising melt mixing an olefin polymer composition with a free-radical initiator composition comprising a peroxide-modified inorganic composition prepared from: i) a liquid or an aqueous hydrogen peroxide, and ii) one or more inorganic solid particles, wherein the inorganic solid particles have affinity to the hydrogen peroxide through hydrogen bonding. The invention also relates to a modified olefin polymer composition prepared by the process and various articles formed from the modified olefin polymer composition.

公开(公告)号：US20240270880A1

公开(公告)日：2024-08-15

申请号：US18394838

申请日：2023-12-22

Applicant: BRASKEM AMERICA, INC. ,  Case Western Reserve University

Inventor： Kimberly Miller McLoughlin ,  Sarah Mitchell ,  Michelle Sing ,  Jayme Kennedy ,  Ica Manas-Zloczower ,  Alireza Bandegi ,  Amin Osouski ,  Thomas Gray

IPC: C08F8/14 ,  B01J31/04 ,  C08F210/02 ,  C08F218/08

CPC classification number: C08F8/14 ,  B01J31/04 ,  C08F210/02 ,  C08F218/08

Abstract: This invention relates to a process for producing a recyclable ethylene-vinyl ester polymer comprising reacting an ethylene-vinyl ester polymer having an irreversibly crosslinked structure with a poly(vinyl alcohol) (PVA), via a transesterification reaction, in the presence of a transesterification catalyst, to produce a recyclable ethylene-vinyl ester vitrimer. This invention also relates to a recyclable ethylene-vinyl ester vitrimer prepared according to the process.