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公开(公告)号：US11926696B2
公开(公告)日：2024-03-12
申请号：US17165356
申请日：2021-02-02
IPC分类号： C08G61/08 , B01J31/22 , C08F2/38 , C08F232/04 , C08F232/08 , C08G61/06
CPC分类号： C08G61/08 , B01J31/2278 , C08F2/38 , C08F232/04 , C08F232/08 , B01J2531/821 , C08G61/06 , C08G2170/00 , C08G2261/226 , C08G2261/228 , C08G2261/3324 , C08G2261/3325 , C08G2261/418 , C08G2380/00
摘要： Low molecular weight, high Tg resins, with applications including tire additives and adhesives. An oligomer is obtained by ring opening metathesis polymerization (ROMP) of a sterically encumbered cyclic monomer with an olefinic chain transfer agent. The sterically encumbered cyclic monomer and the olefinic chain transfer agent are present in the polymerization at a molar ratio of from 2:1 to about 40:1. Also, methods for making the oligomer by ROMP.
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公开(公告)号：US20230023923A1
公开(公告)日：2023-01-26
申请号：US17781068
申请日：2020-12-01
发明人： Chuansheng Bai , Ali A. Kheir , Eric D. Metzger , Christian A. Diaz Urrutia , Meha Rungta , Umar Aslam
IPC分类号： B01J21/10 , B01J23/50 , B01J35/10 , B01J23/46 , B01J23/00 , B01J37/08 , B01J37/02 , C10G47/10
摘要： Disclosed are catalyst compositions comprising two or more metal elements with high performances for selective alkyl-demethylation of C2+-hydrocarbyl-substituted aromatics, processes for making such catalyst compositions, and alkyl-demethylation processes using same. Also disclosed are preferred processes for making alkyl-demethylation catalyst compositions including a high-temperature calcination step, and preferred alkyl-demethylation processes having a high H2/HC molar ratio.
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公开(公告)号：US12060320B2
公开(公告)日：2024-08-13
申请号：US17434237
申请日：2020-03-25
发明人： Paul Podsiadlo , Eric D. Metzger , Wenyih F. Lai , Ali A. Kheir , Dominick A. Zurlo , Jocelyn A. Gilcrest , Kathleen M. Keville
CPC分类号： C07C5/2737 , B01J29/70 , B01J35/615 , C01B39/48 , C01P2002/60 , C01P2006/12 , C07C2529/70
摘要： Novel MEL framework type zeolites can be made to have small crystallite sizes and desirable silica/SiO2 molar ratios. Catalyst compositions comprising such MEL framework type zeolites can be particularly advantageous in isomerization C8 aromatic mixtures. An isomerization process for converting C8 aromatic hydrocarbons can advantageously utilize a catalyst composition comprising a MEL framework type zeolite.
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公开(公告)号：US20230212094A1
公开(公告)日：2023-07-06
申请号：US17996007
申请日：2021-03-12
发明人： Eric D. Metzger , Mayank Shekhar , Wenyih F. Lai , Paul Podsiadlo , Dominick A. Zurlo , Kathleen M. Keville
CPC分类号： C07C5/2737 , B01J29/40 , B01J29/80 , B01J35/1014 , B01J35/1019 , B01J35/1023 , B01J35/006 , C07C4/18 , C07C2529/40 , C07C2529/80
摘要： Processes for converting C8 aromatic hydrocarbons. In some embodiments, the process can include feeding a gaseous hydrocarbon feed that can include meta-xylene, ortho-xylene, or both into a conversion zone. The process can also include contacting the gaseous hydrocarbon feed with a catalyst that can include a ZSM-11 zeolite in the conversion zone under conversion conditions to effect isomerization of at least a portion of any meta-xylene, or at least a portion of any ortho-xylene, or both to produce a conversion product rich in para-xylene. In some embodiments, the ZSM-11 zeolite can have an alpha value of 1 to 3,000 and a molar ratio of silica to alumina of from 15 to 200.
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公开(公告)号：US20230365479A1
公开(公告)日：2023-11-16
申请号：US18044584
申请日：2021-09-01
CPC分类号： C07C5/2708 , B01J29/40 , B01J35/1019 , B01J35/1023 , B01J2229/42 , C07C2529/40
摘要： Processes for converting C8 aromatic hydrocarbons. In some embodiments, a process for converting a hydrocarbon feed that can include C8 aromatic hydrocarbons can include feeding the hydrocarbon feed into a conversion zone and contacting the hydrocarbon feed at least partly in a liquid phase with an isomerization catalyst composition in the conversion zone under conversion conditions to effect isomerization of at least a portion of the C8 aromatic hydrocarbons to produce a conversion product rich in para-xylene. In some embodiments, the isomerization catalyst composition can include a zeolite (preferably a ZSM-5 zeolite) that can have a silica (SiO2) to alumina (AI2O3) molar ratio of 10 to 100, a total surface area of 200 m2/g to 700 m2/g, a micropore surface area of 50 m2/g to 600 m2/g, and an external surface area of 55 m2/g to 550 m2/g.
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6.发明申请公开(公告)号：US20220144725A1
公开(公告)日：2022-05-12
申请号：US17434237
申请日：2020-03-25
发明人： Paul Podsiadlo , Eric D. Metzger , Wenyih F. Lai , Ali A. Kheir , Dominick A. Zurlo , Jocelyn A. Gilcrest , Kathleen M. Keville
摘要： Novel MEL framework type zeolites can be made to have small crystallite sizes and desirable silica/SiO2 molar ratios. Catalyst compositions comprising such MEL framework type zeolites can be particularly advantageous in isomerization C8 aromatic mixtures. An isomerization process for converting C8 aromatic hydrocarbons can advantageously utilize a catalyst composition comprising a MEL framework type zeolite.
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公开(公告)号：US20220134318A1
公开(公告)日：2022-05-05
申请号：US17434222
申请日：2020-03-25
发明人： Wenyih F. Lai , Paul Podsiadlo , Eric D. Metzger , Ivy D. Johnson , Ali A. Kheir , Dominick A. Zurlo , Kathleen M. Keville
IPC分类号： B01J29/40 , C01B39/40 , B01J37/00 , B01J37/06 , B01J37/08 , B01J37/30 , B01J35/10 , B01J35/02 , B01J29/80 , C07C5/27
摘要： Novel MEL framework type zeolites can be made to have small crystallite sizes and desirable silica/SiCb molar ratios. Catalyst compositions comprising such MEL framework type zeolites can be particularly advantageous in isomerization C8 aromatic mixtures. An isomerization process for converting C8 aromatic hydrocarbons can advantageously utilize a catalyst composition comprising a MEL framework type zeolite.
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公开(公告)号：US20210253784A1
公开(公告)日：2021-08-19
申请号：US17165356
申请日：2021-02-02
IPC分类号： C08G61/08 , C08F232/04 , C08F232/08 , C08F2/38 , B01J31/22
摘要： Low molecular weight, high Tg resins, with applications including tire additives and adhesives. An oligomer is obtained by ring opening metathesis polymerization (ROMP) of a sterically encumbered cyclic monomer with an olefinic chain transfer agent. The sterically encumbered cyclic monomer and the olefinic chain transfer agent are present in the polymerization at a molar ratio of from 2:1 to about 40:1. Also, methods for making the oligomer by ROMP.
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公开(公告)号：US20210246260A1
公开(公告)日：2021-08-12
申请号：US17165327
申请日：2021-02-02
IPC分类号： C08G61/08 , C08F232/08 , C08F2/38 , B01J31/22
摘要： Low molecular weight, high Tg resins, with applications including tire additives and adhesives. An oligomer is obtained by ring opening metathesis polymerization (ROMP) of a sterically encumbered cyclic monomer with an olefinic chain transfer agent. The sterically encumbered cyclic monomer and the olefinic chain transfer agent are present in the polymerization at a molar ratio of from 2:1 to about 40:1. Also, methods for making the oligomer by ROMP.
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