公开(公告)号：US11198745B2

公开(公告)日：2021-12-14

申请号：US16692646

申请日：2019-11-22

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Carlos R. Lopez-Barron ,  Andy H. Tsou ,  John R. Hagadorn ,  Sarah J. Mattler

IPC: C08F210/14 ,  C08F10/14 ,  C08F4/76 ,  C08F110/14 ,  C07F7/00

Abstract: The present disclosure relates to poly(alpha-olefin)s and methods for making poly(alpha-olefin)s. A poly(alpha-olefin) may include about 95 wt % or greater C10-C18 alpha-olefin content and have a weight average molecular weight of from about 1,000,000 g/mol to about 10,000,000 g/mol. A method for forming a poly(alpha-olefin) may include introducing one or more C10-C18 alpha-olefins to a catalyst system comprising a catalyst compound and an activator. The method may include obtaining poly(alpha-olefin)s comprising about 95 wt % or greater C10-C18 alpha-olefin content and having a weight average molecular weight of from about 1,000,000 g/mol to about 10,000,000 g/mol.

公开(公告)号：US10138320B2

公开(公告)日：2018-11-27

申请号：US15428346

申请日：2017-02-09

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Andy H. Tsou ,  Crisita Carmen C. H. Atienza ,  Peijun Jiang ,  Antonios Doufas ,  Carlos R. Lopez-Barron

IPC: C08F297/08 ,  C08F10/14 ,  C08F4/76

Abstract: A process for preparing a polyethylene composition comprising contacting ethylene with a first salan catalyst precursor and an activator to form branched vinyl/vinylidene-terminated high density polyethylene having a number average molecular weight (Mn) of at least 5,000 g/mole; and contacting the branched vinyl/vinylidene-terminated high density polyethylene with ethylene and a second metallocene catalyst precursor and an activator to form a comb-block HDPE. The polyethylene composition comprises a polyethylene backbone, and one or more branched high density polyethylene combs pendant to the backbone, the combs having an Mn of at least 5,000 g/mole, where the polyethylene has a branching index (g′) of less than 0.9.

公开(公告)号：US20170275409A1

公开(公告)日：2017-09-28

申请号：US15428346

申请日：2017-02-09

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Andy H. Tsou ,  Crisita Carmen C.H. Atienza ,  Peijun Jiang ,  Antonios Doufas ,  Carlos R. Lopez-Barron

IPC: C08F297/08

CPC classification number: C08F297/083 ,  C08L2205/02 ,  C08F110/02 ,  C08F4/65927 ,  C08F4/64189 ,  C08F2500/05 ,  C08F2500/07 ,  C08F2500/09

Abstract: A process for preparing a polyethylene composition comprising contacting ethylene with a first salan catalyst precursor and an activator to form branched vinyl/vinylidene-terminated high density polyethylene having a number average molecular weight (Mn) of at least 5,000 g/mole; and contacting the branched vinyl/vinylidene-terminated high density polyethylene with ethylene and a second metallocene catalyst precursor and an activator to form a comb-block HDPE. The polyethylene composition comprises a polyethylene backbone, and one or more branched high density polyethylene combs pendant to the backbone, the combs having an Mn of at least 5,000 g/mole, where the polyethylene has a branching index (g′) of less than 0.9.

公开(公告)号：US20170073448A1

公开(公告)日：2017-03-16

申请号：US15214133

申请日：2016-07-19

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Andy H. Tsou ,  George Rodriguez ,  Carlos R. Lopez-Barron ,  Donna J. Crowther ,  Hillary L. Bradshaw ,  Antonios K. Doufas

IPC: C08F290/04 ,  C08L23/12 ,  C08L23/06

CPC classification number: C08F290/042 ,  C08F4/65908 ,  C08F4/65912 ,  C08F10/06 ,  C08L23/0815 ,  C08L23/12 ,  C08L2207/14 ,  C08F210/00 ,  C08F110/06 ,  C08F2500/02 ,  C08F210/16 ,  C08F4/65927 ,  C08F2/001 ,  C08F210/06 ,  C08F2500/09

Abstract: An atactic polypropylene comb-block polyolefin comprising two blocks including a polyolefin backbone and atactic polypropylene combs pendant to the backbone having a weight average molecular weight of at least 8000 g/mole and a crystallinity of less than 20%, where the atactic polypropylene comb-block polyolefin has comb number of at least 2. The atactic polypropylene comb-block polyolefin is made by contacting at a temperature within a range from 20 to 70° C. propylene with a first metallocene precursor to form vinyl-terminated atactic polypropylene to form vinyl-terminated atactic polypropylene, then contacting at a temperature within a range from 40 to 150° C. the vinyl-terminated atactic polypropylene with ethylene, propylene, or both and a second metallocene precursor to form the backbone.

Abstract translation: 一种无规聚丙烯梳形阻燃聚烯烃，其包含两个嵌段，包括聚烯烃主链和侧链至主链的无规聚丙烯梳，其重均分子量至少为8000克/摩尔，结晶度小于20％ 嵌段聚烯烃的梳数至少为2.无规聚丙烯梳框聚烯烃通过在20至70℃的温度范围内与丙烯与第一茂金属前体接触而形成乙烯基封端的无规聚丙烯以形成乙烯基 然后在40-150℃的温度范围内接触乙烯基封端的无规聚丙烯与乙烯，丙烯或二者和第二茂金属前体以形成主链。

公开(公告)号：US20230002545A1

公开(公告)日：2023-01-05

申请号：US17776945

申请日：2020-11-18

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Mika L. Shiramizu ,  Xiao-Dong Pan ,  Alexander V. Zabula ,  Carlos R. Lopez-Barron ,  Alan A. Galuska ,  Yong Yang

IPC: C08G61/08 ,  C08K3/36 ,  C08F36/06 ,  C08F212/08 ,  B60C1/00

Abstract: Rubber compounds may comprise: an epoxidized polypentenamer rubber (CPR) and/or a hydrolyzed epoxidized CPR; and a filler comprising silica particles. One nonlimiting example is rubber compound comprising: phr to 90 phr of a styrene-butadiene rubber (SBR), a natural rubber (NR), and/or a butadiene rubber (BR); 10 phr to 50 phr of a epoxidized CPR and/or a hydrolyzed epoxidized CPR; and 10 phr to 200 phr of a filler comprising silica particles, wherein the SBR, the NR, the BR, the epoxidized CPR, and the hydrolyzed epoxidized CPR combined equal 100 parts. Rubber compounds comprising epoxidized CPR and/or a hydrolyzed epoxidized CPR; and a filler comprising silica particles may be useful in tire compositions.

公开(公告)号：US10954462B2

公开(公告)日：2021-03-23

申请号：US16253108

申请日：2019-01-21

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Andy H. Tsou ,  Carlos R. Lopez-Barron ,  John R. Hagadorn

IPC: C10M119/02 ,  C10M169/02 ,  C10M101/00 ,  C10M105/04 ,  C10N20/04 ,  C10N20/00 ,  C10N50/08 ,  C10N50/10

Abstract: Bottlebrush poly(alpha olefin)s of high carbon number, greater than 12 such as poly(octadecene), are used as a thickener for a synthetic base oil grease lubricant that is based on oligomerized alpha olefin with carbon number from 7 to 12, such as oligo(decene). Dispersion aids are not required in the present lubricants because poly(octadecene) can be dissolved in oligo(decene). The lubricant is a solid grease formed by percolation/network of the poly(octadecene) crystals, at a sufficient concentration, after the crystallization of poly(octadecene), and water resistant having oxidation/high temperature stability.

公开(公告)号：US10533063B2

公开(公告)日：2020-01-14

申请号：US15565603

申请日：2016-03-10

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Xuan Ye ,  John R. Hagadorn ,  Matthew W. Holtcamp ,  Gregory S. Day ,  David F. Sanders ,  Carlos R. Lopez-Barron

IPC: C08F210/16 ,  C08F4/659 ,  C08F4/6592

Abstract: This invention relates to a supported catalyst system and process for use thereof. In particular, the catalyst system includes a pyridyldiamido transition metal complex, a metallocene compound, a support material and, optionally, an activator. The catalyst system may be used for preparing multi-modal polyolefins.

公开(公告)号：US10227483B2

公开(公告)日：2019-03-12

申请号：US15626581

申请日：2017-06-19

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Jingwen Zhang ,  Carlos R. Lopez-Barron ,  Jan Kalfus ,  Abdul M. Jangda

IPC: C08L23/14 ,  C08L53/00 ,  A61L15/22

Abstract: Polymer blends comprising at least one olefin block copolymer such as poly(ethylene-b-ethylene/propylene-b-ethylene), and at least one propylene-based elastomer such as a propylene-ethylene random copolymer, such blends useful in elastic hygiene articles. The blends have improved permanent set compared to the propylene-based elastomer alone.

公开(公告)号：US20180155471A1

公开(公告)日：2018-06-07

申请号：US15808096

申请日：2017-11-09

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Carlos R. Lopez-Barron ,  Mark K. Davis ,  Alan A. Galuska ,  Yong Yang ,  Mosha H. Zhao

IPC: C08F112/32 ,  C08L25/04

Abstract: Disclosed is an article comprising polymers and copolymers selected from the group consisting of poly(vinylbiphenyl), poly(vinylcyclohexylstyrene), substituted versions thereof, and blends thereof, the polymer or copolymer having a weight average molecular weight (Mw) of at least 100 kg/mole and a glass transition temperature (Tg) of at least 100° C. The polymers are desirably processed in the melted state at a temperature of at least 150° C. to impart orientation and extensional strain hardening.

公开(公告)号：US20180079900A1

公开(公告)日：2018-03-22

申请号：US15626581

申请日：2017-06-19

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Jingwen Zhang ,  Carlos R. Lopez-Barron ,  Jan Kalfus ,  Abdul M. Jangda

IPC: C08L23/14 ,  C08L53/00 ,  A61L15/22

CPC classification number: C08L23/14 ,  A61L15/225 ,  C08L53/005 ,  C08L2203/02

Abstract: Polymer blends comprising at least one olefin block copolymer such as poly(ethylene-b-ethylene/propylene-b-ethylene), and at least one propylene-based elastomer such as a propylene-ethylene random copolymer, such blends useful in elastic hygiene articles. The blends have improved permanent set compared to the propylene-based elastomer alone.