Mark Chahl Phones & Addresses
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Friendswood, TX
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120 Indian Warrior Trl, Lake Jackson, TX 77566 (979) 480-9086
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Midland, MI
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Saginaw, MI
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Freeport, TX
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120 Indian Warrior Trl, Lake Jackson, TX 77566
Work
Position:
Service Occupations
Education
Degree:
High school graduate or higher
Publications
Us Patents
Methods For Producing Bimodal Polyolefins And Impact Copolymers
View pageUS Patent:
20230056312, Feb 23, 2023
Filed:
Jan 7, 2021
Appl. No.:
17/791389
Inventors:
- Baytown TX, US
Christopher G. BAUCH - Seabrook TX, US
Todd S. EDWARDS - League City TX, US
Mark S. CHAHL - Friendswood TX, US
Blu E. ENGLEHORN - Houston TX, US
Khoa TO - Baytown TX, US
Steven L. LAMBERT - Webster TX, US
Christopher G. BAUCH - Seabrook TX, US
Todd S. EDWARDS - League City TX, US
Mark S. CHAHL - Friendswood TX, US
Blu E. ENGLEHORN - Houston TX, US
Khoa TO - Baytown TX, US
Steven L. LAMBERT - Webster TX, US
Assignee:
ExxonMobil Chemical Patents Inc. - Baytown TX
International Classification:
C08F 110/06
C08L 23/14
C08L 23/14
Abstract:
Provided are methods for producing bimodal polyolefins comprising the steps of contacting α-olefin monomers with a catalyst in slurry polymerization conditions in the presence of zero to minimum hydrogen to produce a high molecular weight polyolefin and contacting additional α-olefin monomers in gas phase polymerization conditions and the high molecular weight polyolefin and the catalyst to produce bimodal polyolefin having high stiffness and broad molecular weight distribution. An additional step of polymerizing the bimodal polyolefin with a comonomer in a second gas phase can provide a bimodal impact copolymer having high stiffness and broad molecular weight distribution. Among the advantages of the present methods, bimodal polyolefins can be produced in a continuous process between a slurry polymerization reactor and a gas phase polymerization reactor without a venting step in between and with minimal hydrogen in the slurry polymerization reactor.