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1.发明公开公开(公告)号：US20240287279A1
公开(公告)日：2024-08-29
申请号：US18571049
申请日：2022-06-07
Applicant: IFP ENERGIES NOUVELLES , JEPLAN, INC.
Inventor： DAVID CHICHE , Guillaume BLANCKE , Damien LEINEKUGEL LE COCQ , Frederic FAVRE , Yacine HAROUN , Olivier THINON , Adrien MEKKI-BERRADA , Mayara AZIN GONDIM PAIVA , Charles BONNIN , Cyprien CHARRA
CPC classification number: C08J11/24 , C07C67/52 , C07C2601/16 , C08J2367/03
Abstract: The present invention relates to a process for depolymerization of a polyester feedstock comprising PET, comprising:
a) a step for conditioning the polyester feedstock, to produce a conditioned feedstock stream;
b) a step of depolymerization of the conditioned feedstock stream, at a temperature of between 150 and 300° C., in the presence of diol with a ratio by weight between the diol and the diester in the feedstock of between 0.3 and 8.0, to produce a reaction effluent;
c) a step of separation of the diol from the reaction effluent, to produce at least a liquid monomers effluent;
d) a step of separation of the liquid monomers effluent into a heavy impurities effluent and a prepurified monomers effluent; and
e) a step of purification of the prepurified monomers effluent, comprising a substep e1) of adsorption at a temperature of between 50 and 200° C. and a crystallization substep e2), and producing at least one decolourized purified diester monomer effluent.-
公开(公告)号：US20230035324A1
公开(公告)日：2023-02-02
申请号：US17786024
申请日：2020-12-07
Applicant: IFP Energies Nouvelles
Inventor： Yacine HAROUN , Adrien MEKKI-BERRADA , Olivier THINON
IPC: C08J11/24
Abstract: The invention relates to a process for depolymerizing a polyester feedstock comprising PET, said process comprising, prior to the step of depolymerization by glycolysis and to the step of purification of the depolymerization effluent, an improved step of conditioning the feedstock in which the polyester feedstock is conditioned in terms of temperature and pressure and then mixed at least with a recycled residue effluent and a diol effluent in particular in order to substantially reduce the viscosity of the feedstock.
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公开(公告)号：US20170174585A1
公开(公告)日：2017-06-22
申请号：US15388220
申请日：2016-12-22
Applicant: IFP Energies Nouvelles
Inventor： Cyprien CHARRA , Adrien MEKKI-BERRADA , Frederic BAZER-BACHI , Beatrice FISCHER , Florian HILLY
IPC: C07C5/03
Abstract: The present invention relates to a process for the selective hydrogenation of a feed of hydrocarbons containing polyunsaturated molecules comprising at least 3 carbon atoms, using a single principal fixed bed reactor R1 containing at least two catalytic beds A1 and A2 and a fixed bed guard reactor which is reduced in size, said hydrogenation reactors being disposed in series for use in a cyclic manner in accordance with a sequence of steps which can be used to short-circuit the catalytic bed or beds of the principal reactor which have been at least partially deactivated with the aid of the guard reactor, while ensuring the continuous operation of the process.
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Patent Agency Ranking
公开(公告)号：US20250051514A1
公开(公告)日：2025-02-13
申请号：US18717544
申请日：2022-12-06
Applicant: IFP ENERGIES NOUVELLES , JEPLAN, INC.
Inventor： Guillaume BLANCKE , David CHICHE , Frederic FAVRE , Damien LEINEKUGEL LE COCQ , Adrien MEKKI-BERRADA
IPC: C08G63/80 , C08G63/183 , C08G63/685 , C08G63/85
Abstract: The present invention relates to a process for the production of a polyester, comprising: a) a stage of esterification of a mixture comprising a monomer A of formula 1 and a monomer B of formula 2 or a monomer A of formula 1, a monomer B of formula 2 and isophthalic acid, in which R1 is chosen from the group consisting of: —(CH2)n—, with n an integer of between 2 and 4, —(CH2—CHR2)—, with R2 chosen from linear or branched alkyl groups comprising between 1 and 6 carbon atoms (C1-C6) and a phenyl group, then b) a stage of polycondensation.
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5.发明公开公开(公告)号：US20240227246A1
公开(公告)日：2024-07-11
申请号：US18561498
申请日：2022-05-05
Applicant: IFP ENERGIES NOUVELLES
Inventor： Mayara AZIN GONDIM PAIVA , Céline BERTINO-GHERA , Alexandra CHAUMONNOT , Adrien MEKKI-BERRADA , Mathilde SIBEAUD
CPC classification number: B29B17/02 , B29B17/0412 , C07C67/02 , C07C67/03 , B29B2017/0203 , B29B2017/0224 , B29B2017/0231 , B29B2017/0265 , B29B2017/0296 , B29K2027/06 , B29K2105/0038
Abstract: The present invention relates to a process for obtaining a dialkyl phthalate and a reusable target PVC plastic from a PVC feedstock containing at least one phthalate, including:
a) a solid-liquid extraction of said PVC feedstock in the form of particles by placing said particles of the PVC feedstock in contact with a solvent including at least one alcohol CnH2n+1OH with n 8, to produce a liquid phase enriched in said phthalate and a solid phase including PVC plastic depleted in said phthalate;
b) transformation of said phthalate of said liquid phase into dialkyl phthalate of formula C6H4(COOCnH2n+1)2 by transesterification using said alcohol;
c) a solid-liquid separation between the solid phase and the liquid phase to produce at least one solid stream including the PVC plastic depleted in said phthalate so as to obtain said target PVC plastic;
d) a liquid-liquid separation of the liquid phase, to produce at least a first liquid effluent including said dialkyl phthalate and a second liquid effluent comprising said solvent.-
公开(公告)号：US20250059318A1
公开(公告)日：2025-02-20
申请号：US18720561
申请日：2022-12-06
Applicant: IFP ENERGIES NOUVELLES , JEPLAN, INC.
Inventor： Guillaume BLANCKE , David CHICHE , Frederic FAVRE , Damien LEINEKUGEL LE COCQ , Charles-Philippe LIENEMANN , Adrien MEKKI-BERRADA
IPC: C08G63/183 , C07C69/82
Abstract: The invention relates to a composition predominantly comprising BHET and exhibiting a nitrogen content of less than or equal to 10 ppm by weight, the nitrogen content being determined according to a chemiluminescence method, with a stream of ozone at 35 cm3/min, after oxidative combustion of a sample in liquid form, prepared by diluting the composition in tetrahydrofuran, at a temperature of 1050-1100° C. and in the presence of an oxidizing mixture composed of oxygen and helium, and using a calibration curve made using a standard of diphenylamine diluted in toluene.
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7.发明申请公开(公告)号：US20190161595A1
公开(公告)日：2019-05-30
申请号：US16315240
申请日：2017-07-04
Applicant: IFP Energies Nouvelles
Inventor： Cyprien CHARRA , Frederic FAVRE , Adrien MEKKI-BERRADA , Olivier THINON
CPC classification number: C08J11/24 , C07C67/03 , C07C67/54 , C07C67/56 , C07C2601/16 , C08J11/16 , C08J2363/02 , C08J2367/02 , Y02W30/705 , Y02W30/706 , C07C69/82
Abstract: A subject-matter of the invention is a process for the depolymerization of a polyester feedstock comprising opaque PET, the said process comprising at least the stages of conditioning, of depolymerization and of separation of the diol and of separation of the liquid effluent rich in monomers, followed by a decolouration stage.
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8.发明申请公开(公告)号：US20190153338A1
公开(公告)日：2019-05-23
申请号：US16320816
申请日：2017-06-22
Applicant: IFP ENERGIES NOUVELLES
Inventor： Cyprien CHARRA , Vincent COUPARD , Jeremy GAZARIAN , Adrien MEKKI-BERRADA , Jean-Marc SCHWEITZER
Abstract: This invention has as its object a method for selective hydrogenation of a feedstock comprising a pyrolysis gasoline carried out in a three-phase reactor.
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