公开(公告)号：US20240158407A1

公开(公告)日：2024-05-16

申请号：US18549406

申请日：2022-03-03

Applicant: VERSALIS S.P.A.

Inventor： Nicola VECCHINI ,  Federico MONDINI

IPC: C07D487/04

CPC classification number: C07D487/04

Abstract: A method for the preparation of amidines or their derivatives, includes the following step



synthesis of nitrile lactams by reaction between a lactam and an α-β unsaturated nitrile;
synthesis of N-(aminoalkyl) lactams by reducing the nitrile lactams;
and synthesis of amidines by dehydrating the N-(aminoalkyl) lactams.

公开(公告)号：US20230265258A1

公开(公告)日：2023-08-24

申请号：US18011451

申请日：2021-06-16

Applicant: ENI S.P.A. ,  VERSALIS S.P.A.

Inventor： Francesco SCAVELLO ,  Nicola VECCHINI ,  Riccardo FELISARI ,  Armando GALEOTTI ,  Daniele BALDUCCI ,  Stefania GUIDETTI ,  Erica MONTANARI

IPC: C08J11/16 ,  C08K3/26

CPC classification number: C08J11/16 ,  C08K3/26 ,  C08J2323/06 ,  C08J2323/12 ,  C08J2325/06 ,  C08J2327/06 ,  C08J2367/02 ,  C08J2377/00 ,  C08K2003/262

Abstract: A plastic composition includes



plastic material free from halogenated components or with a halogen content less than or equal to 0.5% by mass with respect to the plastic material,
oligomers derived from the plastic contained in the plastic material,
halogenated salts, and
hydrocarbon.

公开(公告)号：US20250136887A1

公开(公告)日：2025-05-01

申请号：US18686577

申请日：2022-08-09

Applicant: VERSALIS S.P.A.

Inventor： Nicola VECCHINI ,  Mirco NODARI ,  Armando GALEOTTI ,  Daniele DELLEDONNE

IPC: C10M133/06 ,  C07C227/08 ,  C10M169/04

Abstract: A Method for the synthesis of ω-amino acids or derivatives thereof, includes the following steps synthesis of an ω-oxoester/linear acid by hydroformylation by CO/H2 mixture of at least one monounsaturated acid/ester, the monounsaturated acid/ester preferably resulting from a reaction of metathesis of oils/fats from renewable sources; synthesis of a linear ω-amino acid/ester and/or ω-aminoamide, subjecting the aforementioned ω-oxoester/linear acid to reductive amination; and possible synthesis of a linear ω-amino acid, subjecting the aforementioned linear ω-aminoester and/or ω-aminoamide to hydrolysis.

公开(公告)号：US20240166656A1

公开(公告)日：2024-05-23

申请号：US18549412

申请日：2022-03-03

Applicant: VERSALIS S.P.A.

Inventor： Nicola VECCHINI ,  Federico MONDINI

IPC: C07D487/04 ,  B01J21/04

CPC classification number: C07D487/04 ,  B01J21/04

Abstract: A method for preparing amidines or derivatives thereof includes the step of subjecting N-(amino-alkyl) lactams to dehydration in the presence of a heterogeneous catalyst selected from a Lewis acid or an acid resin. The process includes selecting an acid catalyst from heterogeneous acid catalysts selected from Lewis acids or Lewis acids with Bronsted acid components, or heterogeneous acid catalysts based on acid resins.

公开(公告)号：US20220339610A1

公开(公告)日：2022-10-27

申请号：US17639136

申请日：2020-08-25

Applicant: VERSALIS S.P.A. ,  ALMA MATER STUDIORUM - UNIVERSITA' DI BOLOGNA

Inventor： Juliana VELASQUEZ OCHOA ,  Fabrizio CAVANI ,  Irene TOSI ,  Erika FARCI ,  Nicola VECCHINI

IPC: B01J27/20 ,  C07C1/24 ,  B01J21/12 ,  B01J37/08

Abstract: A catalyst having coke wherein the coke, upon analysis by infrared spectroscopy in diffuse reflection, has at least two peaks at a wavelength between 1450 cm−1 and 1700 cm−1.
The aforesaid catalyst having coke can be advantageously used in a process for the production of a diene, preferably a conjugated diene, more preferably 1,3-butadiene, said process having the dehydration of at least one alkenol having a number of carbon atoms greater than or equal to 4.
Preferably, the alkenol having a number of carbon atoms greater than or equal to 4 can be obtained directly from biosynthetic processes, or through catalytic dehydration processes of at least one diol.
When the alkenol is a butenol, the diol is preferably a butanediol, more preferably 1,3-butanediol, even more preferably bio-1,3-butanediol, i.e. 1,3-butanediol deriving from biosynthetic processes.
When the diol is 1,3-butanediol, or bio-1,3-butanediol, the diene obtained with the process is, respectively, 1,3-butadiene, or bio-1,3-butadiene.

公开(公告)号：US20180002249A1

公开(公告)日：2018-01-04

申请号：US15540399

申请日：2016-02-22

Applicant: VERSALIS S.P.A.

Inventor： Nicola VECCHINI ,  Gianni GIROTTI

IPC: C07C1/24 ,  B01J21/12 ,  B01J23/10 ,  C07C29/60

CPC classification number: C07C1/24 ,  B01J21/12 ,  B01J23/10 ,  B01J35/023 ,  B01J37/031 ,  C07C29/60 ,  C07C2521/12 ,  C07C11/167 ,  C07C33/025 ,  C07C33/03

Abstract: The present invention relates to a process for the dehydration of at least one oxygenated compound, preferably selected from saturated alcohols, unsaturated alcohols, diols, ethers, in the presence of at least one dehydration catalyst selected from cerium oxide (CeO2), aluminium oxide (γ-Al2O3), aluminium silicate, silica-aluminas (SiO2-Al2O3), aluminas, zeolites, sulfonated resins, ion-exchange resins, metal oxides (for example, lanthanum oxide, zirconium oxide, tungsten oxide, thallium oxide, magnesium oxide, zinc oxide); of at least one basic agent selected from ammonia (NH3), or from inorganic or organic compounds containing nitrogen capable of developing ammonia (NH3) during said dehydration process; and, optionally, of silica (SiO2), or of at least one catalyst for the dissociation of ammonia (NH3) selected from catalysts comprising silica (SiO2), preferably of silica (SiO2).

公开(公告)号：US20170313633A1

公开(公告)日：2017-11-02

申请号：US15529778

申请日：2015-12-11

Applicant: Versalis S.p.A.

Inventor： Nicola VECCHINI ,  Armando GALEOTTI ,  Andrea PISANO

IPC: C07C1/24 ,  C12P7/18 ,  C07C29/60

CPC classification number: C07C1/24 ,  C07C29/60 ,  C12P7/18 ,  C07C11/167 ,  C07C33/025 ,  C07C33/03

Abstract: Process for the production of 1,3-butadiene comprising: feeding a mixture (a) comprising 1,3-butanediol and water to an evaporator, said water being present in an amount of greater than or equal to 5% by weight, preferably ranging from 10% by weight to 85% by weight, more preferably ranging from 15% by weight to 30% by weight, relative to the total weight of said mixture (a), to obtain: (b) a gaseous stream comprising 1,3-butanediol exiting from the top of said evaporator; and, optionally, (c) a blow-down stream exiting from the bottom of said evaporator; feeding said gaseous stream (b) to a first reactor containing at least one dehydration catalyst to obtain (d) a stream comprising alkenols, water and, optionally, impurities and/or unreacted 1,3-butanediol, exiting from said first reactor; optionally, feeding said stream (d) to a first purification section to obtain: (e) a stream comprising al-kenols, water, and, optionally, impurities; (f) a stream comprising water and, optionally, impurities and/or unreacted, 3-butanediol; and, optionally, (f) a stream comprising impurities; feeding said stream (d) or said stream (e) to a second reactor containing at least one dehydration catalyst to obtain (g) a stream comprising 1,3-butadiene, water and, optionally, impurities and/or unreacted alkenols, exiting from said second reactor; feeding said stream (g) to a second purification section to obtain: (h) a stream comprising pure 1,3-butadiene; (i) a stream comprising water and, optionally, unreacted alkenols; and, optionally, (1) a stream comprising impurities. Said 1,3-butadiene may advantageously be used as a monomer or intermediate in the production of elastomers and (co)polymers.