公开(公告)号：US20240392063A1

公开(公告)日：2024-11-28

申请号：US18694729

申请日：2022-09-26

Applicant: EXXONMOBIL CHEMICAL PATENTS INC.

Inventor： Agostino Pietrangelo ,  Carlos R. Lopez-Barron ,  Timothy D. Shaffer ,  Pamela J. Wright

IPC: C08G63/08 ,  C08G63/81 ,  C08G63/82

Abstract: Embodiments described herein relate to polyhdroxyalkanoate (PHA) copolymers and methods for their preparation utilizing ring-opening polymerization of lactones. Variations of the monomer composition, % of alternation, tacticity, and/or microstructure allow for tailoring of mechanical properties that fall into the elastomer, plastomer, and thermoplastic range.

公开(公告)号：US11952480B2

公开(公告)日：2024-04-09

申请号：US16763909

申请日：2019-02-05

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Johannes M. Soulages ,  Arnold Lustiger ,  Thomas T. Sun ,  Pamela J. Wright ,  Madhavi Vadlamudi ,  Alexander I. Norman ,  Adriana S. Silva ,  David M. Fiscus ,  Timothy D. Shaffer

IPC: C08L23/08 ,  B29C48/00 ,  B29C48/10 ,  C08J5/18 ,  B29K23/00 ,  B29K105/00

CPC classification number: C08L23/0815 ,  B29C48/022 ,  B29C48/10 ,  C08J5/18 ,  B29K2023/0625 ,  B29K2023/0683 ,  B29K2105/0088 ,  B29K2995/0063 ,  B29K2995/0077 ,  C08J2323/08 ,  C08J2423/08 ,  C08L2205/025 ,  C08L2207/066 ,  C08L2207/068

Abstract: In some embodiments, the present disclosure provides a composition comprising 1) about 97.5 wt % to about 99.9 wt % of a first polyethylene having a density of about 0.91 g/cm3 to about 0.94 g/cm3, and a melt strength of about 10 mN or greater; and 2) about 0.1 wt % to about 2.5 wt % of a second polyethylene having an Mw of about 500,000 g/mol or more. In some embodiments, the composition is a film. In some embodiments, the present disclosure provides a method of making a composition comprising blending a first polyethylene of any embodiment described herein and a second polyethylene of any embodiment described herein.

公开(公告)号：US10947375B2

公开(公告)日：2021-03-16

申请号：US15774302

申请日：2016-12-09

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Yu Feng Wang ,  Richard D. Hembree ,  Michael F. McDonald, Jr. ,  Joseph A. Maier ,  Richard C. M. Yeh ,  Leming Gu ,  Timothy D. Shaffer ,  Pamela J. Wright

IPC: C08F10/10 ,  C08L23/28 ,  B01J19/00 ,  B01J19/06 ,  B01J19/18 ,  B01J19/20 ,  C08L23/26

Abstract: A system for producing a functionalized olefinic-based polymer, the system comprising a polymerization zone for producing an olefinic-based polymer comprising a mixing section, a deliquifying section, and a quenching section, wherein at least one section of the polymerization zone has a defined cross-sectional area that continually decreases from a first end to a second end of said section; a devolatilization zone comprising a kneader or extruder, wherein said devolatilization zone is downstream of said polymerization zone and in fluid communication with said polymerization zone; and a functionalization zone downstream of said devolatilization zone and in fluid communication with said devolatilization zone.

公开(公告)号：US20170009058A1

公开(公告)日：2017-01-12

申请号：US15113372

申请日：2014-12-15

Applicant: EXXONMOBIL CHEMICAL PATENTS INC.

Inventor： Sunny Jacob ,  Michael F. McDonald ,  Adam H. Scott ,  Joel E. Schmieg ,  Timothy D. Shaffer ,  John A. Clark

IPC: C08K5/3435 ,  C08K3/00 ,  C08K5/3492 ,  C08K5/00

Abstract: This invention relates to a brominated elastomer composition comprising a free radical scavenger. The scavenger is present in the amount of at least about 0.05 wt % of the composition. The scavenger is added to the composition so that the Mooney viscosity of the composition does not increase by more than about 15% to about 40%, for up to about 15 days at 80° C. The scavenger can be a sterically hindered nitroxyl ether, a nitroxyl radical, or both.

Abstract translation: 本发明涉及包含自由基清除剂的溴化弹性体组合物。 清除剂的存在量为组合物的至少约0.05wt％。 将清除剂加入到组合物中，使得组合物的门尼粘度在80℃下不增加约15％至约40％，最多约15天。清除剂可以是空间位阻的硝酰基醚， 硝酰基或二者。

公开(公告)号：US20210371632A1

公开(公告)日：2021-12-02

申请号：US16763909

申请日：2019-02-05

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Johannes M. Soulages ,  Arnold Lustiger ,  Thomas T. Sun ,  Pamela J. Wright ,  Madhavi Vadlamudi ,  Alexander I. Norman ,  Adriana S. Silva ,  David M. Fiscus ,  Timothy D. Shaffer

IPC: C08L23/08 ,  C08J5/18 ,  B29C48/00 ,  B29C48/10

Abstract: In some embodiments, the present disclosure provides a composition comprising 1) about 97.5 wt % to about 99.9 wt % of a first polyethylene having a density of about 0.91 g/cm3 to about 0.94 g/cm3, and a melt strength of about 10 mN or greater; and 2) about 0.1 wt % to about 2.5 wt % of a second polyethylene having an Mw of about 500,000 g/mol or more. In some embodiments, the composition is a film. In some embodiments, the present disclosure provides a method of making a composition comprising blending a first polyethylene of any embodiment described herein and a second polyethylene of any embodiment described herein.

公开(公告)号：US20200255643A1

公开(公告)日：2020-08-13

申请号：US15774302

申请日：2016-12-09

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Yu Feng Wang ,  Richard D. Hembree ,  Michael F. McDonald, JR. ,  Joseph A. Maier ,  Richard C.M. Yeh ,  Leming Gu ,  Timothy D. Shaffer ,  Pamela J. Wright

IPC: C08L23/28 ,  C08F10/10 ,  C08L23/26 ,  B01J19/06 ,  B01J19/18 ,  B01J19/20 ,  B01J19/00

Abstract: A system for producing a functionalized olefinic-based polymer, the system comprising a polymerization zone for producing an olefinic-based polymer comprising a mixing section, a deliquifying section, and a quenching section, wherein at least one section of the polymerization zone has a defined cross-sectional area that continually decreases from a first end to a second end of said section; a devolatilization zone comprising a kneader or extruder, wherein said devolatilization zone is downstream of said polymerization zone and in fluid communication with said polymerization zone; and a functionalization zone downstream of said devolatilization zone and in fluid communication with said devolatilization zone.