公开(公告)号：US20220402188A1

公开(公告)日：2022-12-22

申请号：US17845759

申请日：2022-06-21

Applicant: EQUISTAR CHEMICALS, LP

Inventor： HARILAOS MAVRIDIS ,  MICK C. HUNDLEY ,  SAMEER D. MEHTA ,  MARCO CONSALVI ,  GERHARDUS MEIER ,  LINDSAY E. CORCORAN

IPC: B29C48/00 ,  C10G9/00 ,  C08F8/50 ,  C08F6/10 ,  B29C48/80 ,  C08L23/06 ,  C08L23/12 ,  C08J11/12

Abstract: Methods for processing LLDPE recyclates including, but not limited to, polyethylene and polypropylene and compositions therefrom are provided. LLDPE recyclate can be visbroken to improve processing characteristics and/or devolatilized to remove waste byproducts to produce processed LLDPE recyclates. Processed LLDPE recyclates are compounded with pre-consumer polyolefins to produce blend compositions having acceptable or even improved processing characteristics. Such pre-consumer polyolefins can also be visbroken to further tailor processing characteristics of such polymer blends. A combination of extruders and/or extruder zones can be used at the same or different locations for visbreaking and/or compounding of both LLDPE recyclate and/or pre-consumer polyolefins.

公开(公告)号：US20160032088A1

公开(公告)日：2016-02-04

申请号：US14880885

申请日：2015-10-12

Applicant: Equistar Chemicals, LP

Inventor： SAMEER D. MEHTA

IPC: C08L23/08 ,  C08L23/06

CPC classification number: C08L23/0815 ,  C08L23/06 ,  C08L2205/03 ,  C08L2205/24 ,  C08L2666/02

Abstract: Disclosed is a polyethylene composition having faster crystallization rate and improved environmental stress cracking resistance. The polyethylene composition comprises a multimodal polyethylene and a nucleating agent. The multimodal polyethylene comprises from 25 to 50 wt % of a low molecular weight ethylene homopolymer component, from 25 to 50 wt % of a medium molecular weight ethylene copolymer component and from 25 to 50 wt % of a high molecular weight ethylene copolymer component. The polyethylene composition has an environmental stress cracking resistance (ASTM D1693, Condition B in 100% Igepal) greater than or equal to 40 days and a crystallization half time less than or equal to 70% of the crystallization half time of the multimodal polyethylene without nucleating agent.

Abstract translation: 公开了具有更快的结晶速率和改进的耐环境应力开裂性的聚乙烯组合物。 聚乙烯组合物包含多峰聚乙烯和成核剂。 多峰聚乙烯包含25至50重量％的低分子量乙烯均聚物组分，25至50重量％的中分子量乙烯共聚物组分和25至50重量％的高分子量乙烯共聚物组分。 聚乙烯组合物具有大于或等于40天的环境应力开裂性（ASTM D1693，条件B在100％Igepal中），并且结晶半衰期小于或等于多晶聚乙烯的无结晶半时间的70％ 代理商

公开(公告)号：US20230023978A1

公开(公告)日：2023-01-26

申请号：US17845805

申请日：2022-06-21

Applicant: EQUISTAR CHEMICALS, LP

Inventor： HARILAOS MAVRIDIS ,  MICK C. HUNDLEY ,  SAMEER D. MEHTA ,  MARCO CONSALVI ,  GERHARDUS MEIER ,  LINDSAY E. CORCORAN ,  ANDREAS MAUS ,  TIMO HEES ,  PASCAL REBMANN ,  DIANA DOETSCH ,  KATHARINA ELSAS

IPC: B29C48/00 ,  C10G9/00 ,  C08F8/50 ,  C08F6/10 ,  B29C48/80 ,  C08L23/06 ,  C08L23/12 ,  C08J11/12

Abstract: Methods for processing LDPE recyclates including, but not limited to, polyethylene and polypropylene and compositions therefrom are provided. LDPE recyclate can be visbroken to improve processing characteristics and/or devolatilized to remove waste byproducts to produce processed LDPE recyclates. Processed LDPE recyclates are compounded with pre-consumer polyolefins to produce blend compositions having acceptable or even improved processing characteristics. Such pre-consumer polyolefins can also be visbroken to further tailor processing characteristics of such polymer blends. A combination of extruders and/or extruder zones can be used at the same or different locations for visbreaking and/or compounding of both LDPE recyclate and/or pre-consumer polyolefins.

公开(公告)号：US20220402187A1

公开(公告)日：2022-12-22

申请号：US17845673

申请日：2022-06-21

Applicant: EQUISTAR CHEMICALS, LP

Inventor： HARILAOS MAVRIDIS ,  MICK C. HUNDLEY ,  SAMEER D. MEHTA ,  MARCO CONSALVI ,  GERHARDUS MEIER ,  LINDSAY E. CORCORAN ,  ROCIO S. GARAY ,  TIMOTHY J. SKILLMAN ,  ERIC D. DAY

IPC: B29C48/00 ,  C10G9/00 ,  C08F8/50 ,  C08F6/10 ,  B29C48/80 ,  C08L23/06 ,  C08L23/12 ,  C08J11/12

Abstract: Methods for processing HDPE and/or MDPE recyclates including, but not limited to, polyethylene and polypropylene and compositions therefrom are provided. HDPE and/or MDPE recyclate feedstocks can be visbroken to improve processing characteristics and/or devolatilized to remove waste byproducts to produce processed HDPE recyclate and/or processed MDPE recyclates. Processed HDPE recyclate and/or processed MDPE recyclates are compounded with pre-consumer polyolefins to produce blend compositions having acceptable or even improved processing characteristics. Such pre-consumer polyolefins can also be visbroken to further tailor processing characteristics of such polymer blends. A combination of extruders and/or extruder zones can be used at the same or different locations for visbreaking and/or compounding of both HDPE and/or MDPE recyclate and/or pre-consumer polyolefins.

公开(公告)号：US20230050126A1

公开(公告)日：2023-02-16

申请号：US17845636

申请日：2022-06-21

Applicant: EQUISTAR CHEMICALS, LP

Inventor： HARILAOS MAVRIDIS ,  MICK C. HUNDLEY ,  SAMEER D. MEHTA ,  MARCO CONSALVI ,  GERHARDUS MEIER ,  LINDSAY CORCORAN

IPC: C08L23/06 ,  C10G9/00 ,  C08L23/12 ,  C08J11/10

Abstract: Methods for processing polyolefin recyclates including, but not limited to, polyethylene and polypropylene and compositions therefrom are provided. polyolefin recyclate feedstocks can be visbroken to improve processing characteristics and/or devolatilized to remove waste byproducts to produce processed polyolefin recyclates. Processed polyolefin recyclates are compounded with pre-consumer polyolefins to produce blend compositions having acceptable or even improved processing characteristics. Such pre-consumer polyolefins can also be visbroken to further tailor processing characteristics of such polymer blends. A combination of extruders and/or extruder zones can be used at the same or different locations for visbreaking and/or compounding of both polyolefin recyclate and/or pre-consumer polyolefins.

公开(公告)号：US20220410458A1

公开(公告)日：2022-12-29

申请号：US17845727

申请日：2022-06-21

Applicant: EQUISTAR CHEMICALS, LP

Inventor： HARILAOS MAVRIDIS ,  MICK C. HUNDLEY ,  SAMEER D. MEHTA ,  MARCO CONSALVI ,  GERHARDUS MEIER ,  LINDSAY E. CORCORAN

IPC: B29C48/00 ,  C10G9/00 ,  C08F8/50 ,  C08F6/10 ,  B29C48/80 ,  C08L23/06 ,  C08L23/12 ,  C08J11/12

Abstract: Methods for processing HDPE recyclates including, but not limited to, polyethylene and polypropylene and compositions therefrom are provided. HDPE recyclate can be visbroken to improve processing characteristics and/or devolatilized to remove waste byproducts to produce processed HDPE recyclates. Processed HDPE recyclates are compounded with pre-consumer polyolefins to produce blend compositions having acceptable or even improved processing characteristics. Such pre-consumer polyolefins can also be visbroken to further tailor processing characteristics of such polymer blends. A combination of extruders and/or extruder zones can be used at the same or different locations for visbreaking and/or compounding of both HDPE recyclate and/or pre-consumer polyolefins.