公开(公告)号：US20200277427A1

公开(公告)日：2020-09-03

申请号：US16620734

申请日：2017-06-14

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Narayanaswami Dharmarajan ,  Francis C, Rix ,  Jo Ann M. Canich ,  Danica L. Nguyen ,  Peijun Jiang ,  Rhutesh K. Shah

IPC: C08F236/20 ,  C08K5/01

Abstract: Compositions are provided which include blends of (A) branched and/or bimodal ethylene copolymers and (B) linear ethylene copolymers. The branched and/or bimodal ethylene copolymers may be produced using a dual metallocene catalyst system comprising two different metallocene catalysts: one capable of producing high Mooney-viscosity polymers and one suitable for producing polymers having at least a portion of vinyl terminations. The linear ethylene copolymers may be produced using a metallocene catalyst capable of producing high Mooney-viscosity polymers, which may be the same as such catalyst of the dual metallocene catalyst system. Processes for making such blends, including parallel and/or series polymerization processes, are also provided. The blends may have excellent cure properties suitable in curable rubber compound applications.

公开(公告)号：US11117983B2

公开(公告)日：2021-09-14

申请号：US16638961

申请日：2018-07-05

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Aaron Sattler ,  George Rodriguez ,  Charles J. Harlan ,  Aakriti Jain ,  Florin Barsan ,  Danica L. Nguyen ,  Michael F. McDonald, Jr. ,  Jo Ann M. Canich

IPC: C08F6/02

Abstract: A method for making a polymer, having the steps of (a) polymerizing one or more monomers in the presence of a solvent and a catalyst to form a reaction product; (b) removing an effluent from the reaction product, where the effluent comprises an active catalyst and one or more unreacted monomers; (c) combining a quench, comprising carbon dioxide, with the effluent to form a quenched polymer stream, having a carboxyl metal complex; and (d) recovering a polymer from the quenched polymer stream.

公开(公告)号：US20200223953A1

公开(公告)日：2020-07-16

申请号：US16638961

申请日：2018-07-05

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Aaron Sattler ,  George Rodriguez ,  Charles J. Harlan ,  Aakriti Jain ,  Florin Barsan ,  Danica L. Nguyen ,  Michael F. McDonald ,  Jo Ann M. Canlch

IPC: C08F6/02

Abstract: A method for making a polymer, having the steps of (a) polymerizing one or more monomers in the presence of a solvent and a catalyst to form a reaction product; (b) removing an effluent from the reaction product, where the effluent comprises an active catalyst and one or more unreacted monomers; (c) combining a quench, comprising carbon dioxide, with the effluent to form a quenched polymer stream, having a carboxyl metal complex; and (d) recovering a polymer from the quenched polymer stream.