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公开(公告)号：US20170198064A1
公开(公告)日：2017-07-13
申请号：US15313572
申请日：2015-04-29
Applicant: SABIC Global Technologies B.V.
Inventor： Diego Mauricio Castaneda Zuniga , Peter Neuteboom , Jan Nicolaas Eddy Duchateau , Zeljko Knez
IPC: C08F6/00
CPC classification number: C08F6/003 , C08F6/005 , C08F6/10 , C08F6/12 , C08J3/14 , C08J11/08 , C08J2323/06 , Y02P20/544 , Y02W30/701
Abstract: A process for increasing purity of a low density polyethylene (LDPE) composition, comprising the steps of: a) providing a melted composition comprising LDPE having Mn of at least 5.0 kg/mol according to size exclusion chromatography, Mw of at least 50 kg/mol according to size exclusion chromatography, a density of 915 to 935 kg/m3 according to ISO1183 and a melt flow rate of 0.10 g/10 min to 80 g/10 min according to ISO1133:2011 measured at 190° C. and 2.16 kg, and b) providing particles from the melted composition by: b1) mixing a supercritical fluid in the melted composition to obtain a solution saturated with the supercritical fluid and b2) expanding the solution through an opening to obtain the particles.
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Patent Agency Ranking
公开(公告)号：US20210130568A1
公开(公告)日：2021-05-06
申请号：US16474849
申请日：2017-12-12
Applicant: SABIC GLOBAL TECHNOLOGIES B.V.
Inventor： Diego Mauricio Castaneda Zuniga , Jerome Vachon , Jan Nicolaas Eddy Duchateau , Peter Neuteboom , Zeljko Knez
Abstract: The present invention relates to a process for recycling polyolefin, comprising the steps of: 1) feeding a solid post-consumer polyolefin composition comprising polyolefin and contaminants and a flow of an extraction fluid to an extractor having a pressure of 100-1000 bar and a temperature of 20-80° C. to obtain a solid extracted composition, 2) melting the solid extracted composition to obtain a melted composition, 3) providing particles from the melted composition by: 3a) mixing a flow of a supercritical fluid in the melted composition in a pressure vessel to obtain a solution saturated with the supercritical fluid and 3b) passing the solution from the pressure vessel through a throttling device to a spraying tower to expand the solution to obtain polyolefin particles in the spraying tower.
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公开(公告)号：US20190002646A1
公开(公告)日：2019-01-03
申请号：US15743865
申请日：2016-06-30
Applicant: SABIC Global Technologies B.V.
Inventor： Diego Mauricio Castaneda Zuniga , Jan Nicolaas Eddy Duchateau , Peter Neuteboom , Zeljko Knez
Abstract: The present invention relates to a process for producing polyolefin particles from a polyolefin composition, comprising the steps of: a) providing a melted composition of a polyolefin and b) providing particles from the melted composition by: b1) mixing a first flow of a supercritical fluid in the melted composition in a pressure vessel to obtain a solution saturated with the supercritical fluid and b2) passing the solution from the pressure vessel through a throttling device to a spraying tower to expand the solution to obtain the polyolefin particles in the spraying tower, wherein a second flow of a supercritical fluid is injected in the throttling device, wherein the supercritical fluid is a supercritical fluid of a substance selected from the group consisting of CO2, NH3, H2O, N2O, CH4, ethane, propane, propylene, n-butane, i-butane, n-pentane, benzene, methanol, ethanol, isopropanol, isobutanol, chlorotrifluoromethane, monofluoromethane, 1,1,1,2-Tetrafluoroethane, toluene, pyridine, cyclohexane, cyclohexanol, o-xylene, dimethyl ether and SF6 and combinations thereof.
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公开(公告)号：US11136438B2
公开(公告)日：2021-10-05
申请号：US15743865
申请日：2016-06-30
Applicant: SABIC Global Technologies B.V.
Inventor： Diego Mauricio Castaneda Zuniga , Jan Nicolaas Eddy Duchateau , Peter Neuteboom , Zeljko Knez
Abstract: A process for producing polyolefin particles from a polyolefin composition, comprising the steps of:
a) providing a melted composition of a polyolefin and
b) providing particles from the melted composition by:
b1) mixing a first flow of a supercritical fluid in the melted composition in a pressure vessel to obtain a solution saturated with the supercritical fluid and
b2) passing the solution from the pressure vessel through a throttling device to a spraying tower to expand the solution to obtain the polyolefin particles in the spraying tower, wherein a second flow of a supercritical fluid is injected in the throttling device, wherein the supercritical fluid is a supercritical fluid of a substance selected from the group consisting of CO2, NH3, H2O, N2O, CH4, ethane, propane, propylene, n-butane, i-butane, n-pentane, benzene, methanol, ethanol, isopropanol, isobutanol, chlorotrifluoromethane, monofluoromethane, 1,1,1,2-Tetrafluoroethane, toluene, pyridine, cyclohexane, cyclohexanol, o-xylene, dimethyl ether and SF6 and combinations thereof.-
公开(公告)号：US11130850B2
公开(公告)日：2021-09-28
申请号：US16474849
申请日：2017-12-12
Applicant: SABIC GLOBAL TECHNOLOGIES B.V.
Inventor： Diego Mauricio Castaneda Zuniga , Jerome Vachon , Jan Nicolaas Eddy Duchateau , Peter Neuteboom , Zeljko Knez
Abstract: The present invention relates to a process for recycling polyolefin, comprising the steps of: 1) feeding a solid post-consumer polyolefin composition comprising polyolefin and contaminants and a flow of an extraction fluid to an extractor having a pressure of 100-1000 bar and a temperature of 20-80° C. to obtain a solid extracted composition, 2) melting the solid extracted composition to obtain a melted composition, 3) providing particles from the melted composition by: 3a) mixing a flow of a supercritical fluid in the melted composition in a pressure vessel to obtain a solution saturated with the supercritical fluid and 3b) passing the solution from the pressure vessel through a throttling device to a spraying tower to expand the solution to obtain polyolefin particles in the spraying tower.
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公开(公告)号：US10184014B2
公开(公告)日：2019-01-22
申请号：US15313572
申请日：2015-04-29
Applicant: SABIC Global Technologies B.V.
Inventor： Diego Mauricio Castaneda Zuniga , Peter Neuteboom , Jan Nicolaas Eddy Duchateau , Zeljko Knez
Abstract: A process for increasing purity of a low density polyethylene (LDPE) composition, comprising the steps of: a) providing a melted composition comprising LDPE having Mn of at least 5.0 kg/mol according to size exclusion chromatography, Mw of at least 50 kg/mol according to size exclusion chromatography, a density of 915 to 935 kg/m3 according to ISO1183 and a melt flow rate of 0.10 g/10 min to 80 g/10 min according to ISO1133:2011 measured at 190° C. and 2.16 kg, and b) providing particles from the melted composition by: b1) mixing a supercritical fluid in the melted composition to obtain a solution saturated with the supercritical fluid and b2) expanding the solution through an opening to obtain the particles.
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