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公开(公告)号：US20240317906A1
公开(公告)日：2024-09-26
申请号：US18575083
申请日：2022-06-28
申请人： VERSALIS S.P.A.
发明人： Alessandro CASALINI , Aldo LONGO , Emilj SONCIN , Nicola FIOROTTO
IPC分类号： C08F12/08
CPC分类号： C08F12/08
摘要： Continuous mass polymerisation process for the preparation of vinyl aromatic polymers includes:
continuously feeding at least one vinyl aromatic monomer and at least one radical initiator to a mixing device, obtaining a reaction mixture;
feeding the reaction mixture to a Continuous Stirred Tank Reactor (CSTR) and in liquid phase leaving the CSTR to at least one Plug Flow Reactor (PFR);
recycling, to the mixing device, a fraction of the reaction mixture in liquid phase leaving the at least one PFR, the fraction between 25% and 50% by mass with respect to total mass of reaction mixture in liquid phase leaving the at least one PFR;
feeding the remaining fraction of the reaction mixture in liquid phase leaving the at least one PFR, to a devolatilisation system; and
feeding the polymer leaving the devolatilisation system or additive system, to a granulation system and recovering the polymer.-
公开(公告)号：US20240158407A1
公开(公告)日：2024-05-16
申请号：US18549406
申请日：2022-03-03
申请人： VERSALIS S.P.A.
发明人： Nicola VECCHINI , Federico MONDINI
IPC分类号： C07D487/04
CPC分类号： C07D487/04
摘要： 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：US11851385B2
公开(公告)日：2023-12-26
申请号：US17787754
申请日：2020-12-18
申请人： VERSALIS S.P.A.
IPC分类号： C07C1/24
CPC分类号： C07C1/24 , C07C2521/04 , C07C2521/08
摘要： A process for producing a diene, preferably a conjugated diene, more preferably 1,3-butadiene, includes the steps of dehydrating at least one alkenol in the presence of at least one catalytic material having at least one acid catalyst based on silica (SiO2) and alumina (Al2O3), preferably a silica-alumina (SiO2—Al2O3), the catalyst having an alumina content (Al2O3) lower than or equal to 12% by weight, preferably between 0.1% by weight and 10% by weight, with respect to the catalyst total weight. The alumina content is referred to the catalyst total weight without binder, and a pore modal diameter between 9 nm and 170 nm, preferably between 10 nm and 150 nm, still more preferably between 12 nm and 120 nm.
Preferably, the alkenol is obtainable directly from biosynthetic processes, or catalytic dehydration processes of at least one diol, preferably a butanediol, more preferably 1,3-butanediol, still more preferably bio-1,3-butanediol, deriving from biosynthetic processes.-
公开(公告)号：US20230085074A1
公开(公告)日：2023-03-16
申请号：US17787754
申请日：2020-12-18
申请人： VERSALIS S.P.A.
IPC分类号： C07C1/24
摘要： A process for producing a diene, preferably a conjugated diene, more preferably 1,3-butadiene, includes the steps of dehydrating at least one alkenol in the presence of at least one catalytic material having at least one acid catalyst based on silica (SiO2) and alumina (Al2O3), preferably a silica-alumina (SiO2—Al2O3), the catalyst having an alumina content (Al2O3) lower than or equal to 12% by weight, preferably between 0.1% by weight and 10% by weight, with respect to the catalyst total weight. The alumina content is referred to the catalyst total weight without binder, and a pore modal diameter between 9 nm and 170 nm, preferably between 10 nm and 150 nm, still more preferably between 12 nm and 120 nm. Preferably, the alkenol is obtainable directly from biosynthetic processes, or catalytic dehydration processes of at least one diol, preferably a butanediol, more preferably 1,3-butanediol, still more preferably bio-1,3-butanediol, deriving from biosynthetic processes.
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公开(公告)号：US11518776B2
公开(公告)日：2022-12-06
申请号：US16345015
申请日：2018-01-18
申请人： Versalis S.P.A.
IPC分类号： C08F36/06 , C08F36/08 , C07F15/02 , C07C251/08 , C08F136/06 , C08F136/08
摘要： Oxo-nitrogenated iron complex having general formula (I): in which: R1 and R2, identical or different, represent a hydrogen atom; or they are selected from linear or branched, optionally halogenated C1-C20, preferably C1-C15, alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; R3 represents a hydrogen atom, or it is selected from linear or branched, optionally halogenated C1-C20, preferably C1-C15 alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; X, identical or different, represent a halogen atom such as, for example, chlorine, bromine, iodine, preferably chlorine; or they are selected from. linear or branched C1-C20, preferably C1-C15, alkyl groups, —OCOR4 groups or —OR4 groups in which R4 is selected from linear or branched C1-C20, preferably C1-C15, alkyl groups; n is 2 or 3. Said oxo-nitrogenated iron complex having general formula (I) can be advantageously used in a catalytic system for the (co)polymerization of conjugated dienes.
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公开(公告)号：US11498887B2
公开(公告)日：2022-11-15
申请号：US16339186
申请日：2017-10-18
申请人： Versalis S.P.A.
IPC分类号： C01C1/24 , C07C11/167 , C07C1/24 , B01J37/03 , B01J35/00 , B01J23/10 , B01J29/08 , B01J29/70 , B01J37/00 , C07C29/60 , B01J35/10 , B01J37/08 , C07C33/03 , C12P7/18
摘要： The present invention relates to a process for producing a diene, preferably a conjugated diene, more preferably 1,3-butadiene, comprising the dehydration of at least one alkenol having a number of carbon atoms greater than or equal to 4, in the presence of a catalytic material comprising at least one crystalline metalosilicate in acid form, preferably a macroporous zeolite, more preferably a zeolite with a FAU, BEA or MTW structure. Preferably, said alkenol having a number of carbon atoms greater than or equal to 4 may be obbtained directly through biosynthetic processes, or through catalytic dehydration processes of at least one diol. When said alkenol is a butenol, said 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 said alkenol is 1,3-butanediol, or bio-1,3-butanediol, the diene obtained with the process according to the present invention is, respectively, 1,3-butadiene, or bio-1,3-butadiene.
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公开(公告)号：US11359066B2
公开(公告)日：2022-06-14
申请号：US16313765
申请日：2017-07-07
申请人： Versalis S.p.A.
摘要： The present invention relates to an expandable polymeric composition comprising: a) a polymeric matrix containing vinyl aromatic polymers and/or copolymers; b) from 0.1% to 20% by weight, calculated on the polymeric matrix (a), of an athermanous agent; c) from 0.01% to 10% by weight, calculated on the polymeric matrix (a), of at least one non-polymeric brominated flame retardant additive; d) from 0.01% to 10% by weight, calculated on the polymeric matrix (a), of at least one brominated polymer containing at least 50% bromine; e) from 0.01% to 5% by weight, calculated on the polymeric matrix (a), of a synergistic flame retardant additive; f) from 1% by weight to 10% by weight of at least one blowing agent.
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公开(公告)号：US11085017B2
公开(公告)日：2021-08-10
申请号：US16077581
申请日：2017-02-20
申请人： Versalis S.p.A.
发明人： Fabio Sabbatini
摘要： It is disclosed a process for propagating a yeast capable to ferment glucose and xylose of a lignocellulosic feedstock hydrolyzate, said process comprising propagating the yeast over at least two propagation cycles. The first propagation cycle comprises the steps of: contacting the yeast at a starting yeast density with a first cultivation medium comprising a first portion of the lignocellulosic feedstock hydrolyzate; and allowing the yeast to propagate to create a first populated broth comprising water and a first propagated yeast, wherein at least 50% of the glucose and less than 20% of the xylose in the first cultivation medium are consumed in the first propagation cycle. The second cycle comprises the steps of: separating the first populated broth in at least a first removed portion and a first residual portion, wherein both the first residual portion and the first removed portion comprise some of the first propagated yeast; contacting the first residual portion with a second cultivation medium comprising a second portion of the lignocellulosic feedstock hydrolyzate; and allowing the yeast to propagate to create a second populated broth comprising water and a second propagated yeast, wherein at least 50% of the glucose and less than 20% of the xylose in the second cultivation medium are consumed in the second propagation cycle.
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9.发明授权公开(公告)号：US11021416B2
公开(公告)日：2021-06-01
申请号：US15028780
申请日：2014-12-24
申请人： versalis S.p.A.
IPC分类号： C07C1/207 , C10G3/00 , C07C67/333 , C07C67/03 , C10L1/02 , C11C3/14 , C11C3/00 , C07C7/04 , C10G45/60 , C10L1/04
摘要： The present invention relates to a process for the production of olefinic compounds that can be used for the production of detergents, additives, lubricants and/or plastic materials, or components which can be used in the field of oil explorations and productions, and a hydrocarbon fuel or a fraction thereof, which comprises subjecting a mixture of glycerides having at least one unsaturated hydrocarbon chain, to metathesis reaction and, after separating the olefinic mixture obtained, effecting a hydrodeoxygenation and subsequently hydroisomerization process, so as to obtain the hydrocarbon fuel or a fraction thereof.
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10.发明授权公开(公告)号：US10920033B2
公开(公告)日：2021-02-16
申请号：US16314047
申请日：2017-07-28
申请人： Versalis S.p.A.
发明人： Giovanni Cuder , Stefano Comba , Aldo Longo
摘要： The present invention relates to polymeric compositions that can be used for producing packaging with dynamic cushioning, with a pleasant touch, with reduced abrasive power, in which the expanded particles constituting the packaging adhere well to one another and do not come detached during use. Said compositions comprise: a) from 70% to 90% by weight of a vinyl aromatic polymer and/or copolymer, calculated with respect to (a)+(b); b) from 10% to 30% by weight of an ethylene-vinyl acetate copolymer (EVA) containing a percentage that ranges from 10% to 30% by weight of vinyl acetate, calculated with respect to (a)+(b); c) from 3 to 10 parts by weight of a blowing agent, calculated on 100 parts of component a) added to component b); said copolymer (b) being distributed in the polymer (a) in the form of particles having an average volumetric diameter ranging from 1 nm to 2000 nm. The compositions described and claimed do not include styrene-butadiene or styrene-isoprene block copolymers, hydrogenated or non-hydrogenated; thermoplastic polyurethanes, polystyrene-butadiene grafted polymers or styrene core-shell polymers.
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