公开(公告)号：US20210371555A1

公开(公告)日：2021-12-02

申请号：US17052880

申请日：2019-05-08

Applicant: VERSALIS S.P.A.

Inventor： Franco Ghelfi ,  Angelo Ferrando ,  Aldo Longo ,  Mirko Boffagni

IPC: C08F112/08

Abstract: The present invention relates to a polymerization process for the synthesis of vinyl aromatic polymers, in which the sequence of monomers in the chain and the linear, branched soluble, or crosslinked insoluble structure, with reactive or different polarity functions, are controlled. Said process comprises the step of polymerizing vinyl aromatic monomers by means of an Atom Transfer Radical Polymerization (ATRP) reaction with an Activator ReGenerated by Electron Transfer (ARGET), the reaction being carried out at a temperature comprised between 25° C. and 110° C. in an inert gas atmosphere in the presence of a complex catalyst containing a cupric halide and a multidentate amine ligand, feeding to the reaction an organic initiator having two geminal halogens, an alkali metal (bi)carbonate, a solvent pair of an aliphatic alcohol and an acetic ester of the same aliphatic alcohol and possibly ascorbic acid, provided that no initiator is used with three or more active halogens, or polyvinyl monomers or inimers.

公开(公告)号：US11725070B2

公开(公告)日：2023-08-15

申请号：US17052880

申请日：2019-05-08

Applicant: VERSALIS S.P.A.

Inventor： Franco Ghelfi ,  Angelo Ferrando ,  Aldo Longo ,  Mirko Buffagni

IPC: C08F112/08 ,  C08F12/08

CPC classification number: C08F112/08

Abstract: The present invention relates to a polymerization process for the synthesis of vinyl aromatic polymers, in which the sequence of monomers in the chain and the linear, branched soluble, or crosslinked insoluble structure, with reactive or different polarity functions, are controlled. Said process comprises the step of polymerizing vinyl aromatic monomers by means of an Atom Transfer Radical Polymerization (ATRP) reaction with an Activator ReGenerated by Electron Transfer (ARGET), the reaction being carried out at a temperature comprised between 25° C. and 110° C. in an inert gas atmosphere in the presence of a complex catalyst containing a cupric halide and a multidentate amine ligand, feeding to the reaction an organic initiator having two geminal halogens, an alkali metal (bi)carbonate, a solvent pair of an aliphatic alcohol and an acetic ester of the same aliphatic alcohol and possibly ascorbic acid, provided that no initiator is used with three or more active halogens, or polyvinyl monomers or inimers.

公开(公告)号：US10920033B2

公开(公告)日：2021-02-16

申请号：US16314047

申请日：2017-07-28

Applicant: Versalis S.p.A.

Inventor： Giovanni Cuder ,  Stefano Comba ,  Aldo Longo

IPC: C08J9/14 ,  C08J9/18 ,  C08J9/00 ,  C08J9/232

Abstract: 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.

公开(公告)号：US10087297B2

公开(公告)日：2018-10-02

申请号：US14441673

申请日：2013-11-15

Applicant: Versalis S.P.A.

Inventor： Alessandro Casalini ,  Aldo Longo ,  Antonio Ponticiello ,  Giuditta Vannucci

IPC: C08F212/08 ,  C08F293/00 ,  C08F8/06 ,  C08J9/00 ,  C08K3/04 ,  C08K5/00 ,  C08L25/06 ,  C08L25/08 ,  C08L51/04 ,  C08L51/06 ,  C08L53/00

Abstract: The present invention relates to a self-extinguishing polymeric composition comprising: a) a stabilizing polymeric composition containing i) from 80% to 99.5% by weight of one or more vinylaromatic polymers compatible with each other; and ii) from 0.5% to 20% by weight of at least one block copolymer containing: 1) at least one vinylaromatic polymer block compatible N with (i) and constituting a weight quantity equal to or higher than 15% by weight with respect to the whole block copolymer, and 2) at least one vinyl copolymer block containing epoxy groups so that there is from 0.7% to 19% by weight of oxirane oxygen calculated on the total of block copolymer; and b) from 0.03 phr by weight to 10 phr by weight, calculated on the basis of component (a), of at least one halogenated flame retardant.

公开(公告)号：US11155675B2

公开(公告)日：2021-10-26

申请号：US16316839

申请日：2017-07-26

Applicant: versalis S.p.A.

Inventor： Mirco Nodari ,  Aldo Longo ,  Martino Colonna ,  Claudio Gioia

IPC: C08G63/16 ,  C08G63/87

Abstract: A method for synthesizing regioregular polyesters, starting from asymmetric diols, may provide the polymer ordered structure and advantageous physical-chemical properties. Such methods can make it is possible to obtain regioregular polyesters having high glass transition temperatures Tg and crystalline properties. In the case in which the asymmetric diols are used in a pure enantiomeric form, with respect to the chiral carbon bound to the secondary hydroxyl, through the above-mentioned method it is possible to obtain regioregular and stereoregular polyesters, which may have thermal and crystalline properties further ameliorative with respect to non-chiral regioregular polymers.

公开(公告)号：US20150299410A1

公开(公告)日：2015-10-22

申请号：US14441673

申请日：2013-11-15

Applicant: VERSALIS S.P.A.

Inventor： Alessandro Casalini ,  Aldo Longo ,  Antonio Ponticiello ,  Giuditta Vannucci

IPC: C08J9/00 ,  C08L25/06

CPC classification number: C08J9/0061 ,  C08F8/06 ,  C08F212/08 ,  C08F293/005 ,  C08F2438/02 ,  C08J2325/06 ,  C08J2325/14 ,  C08K3/04 ,  C08K5/0066 ,  C08L25/06 ,  C08L25/08 ,  C08L51/04 ,  C08L51/06 ,  C08L53/00 ,  C08F2220/325 ,  C08F297/04

Abstract: The present invention relates to a self-extinguishing polymeric composition comprising: a) a stabilizing polymeric composition containing i) from 80% to 99.5% by weight of one or more vinylaromatic polymers compatible with each other; and ii) from 0.5% to 20% by weight of at least one block copolymer containing: 1) at least one vinylaromatic polymer block compatible N with (i) and constituting a weight quantity equal to or higher than 15% by weight with respect to the whole block copolymer, and 2) at least one vinyl copolymer block containing epoxy groups so that there is from 0.7% to 19% by weight of oxirane oxygen calculated on the total of block copolymer; and b) from 0.03 phr by weight to 10 phr by weight, calculated on the basis of component (a), of at least one halogenated flame retardant.

Abstract translation: 本发明涉及自熄性聚合物组合物，其包含：a）稳定聚合物组合物，其包含i）80重量％至99.5重量％的一种或多种彼此相容的乙烯基芳族聚合物; 和ii）0.5重量％至20重量％的至少一种嵌段共聚物，所述嵌段共聚物包含：1）至少一种乙烯基芳族聚合物嵌段相容的N与（i）并且构成重量相等于或高于15重量％ 整个嵌段共聚物，和2）含有环氧基团的至少一种乙烯基共聚物嵌段，使得以总共嵌段共聚物计算的环氧乙烷氧含量为0.7％至19％; 和b）至少一种卤代阻燃剂，基于组分（a）计算的0.03phr至10phr。

公开(公告)号：US10662380B2

公开(公告)日：2020-05-26

申请号：US15119564

申请日：2015-03-26

Applicant: versalis S.p.A.

Inventor： Aldo Longo ,  Attilio Arienti ,  Giuditta Vannucci

IPC: C08L25/08 ,  C09K21/14 ,  C08F293/00 ,  C08F220/22 ,  C08F220/32

Abstract: The present invention relates to vinyl polymers having certain characteristics which confer flame-retardant properties to the polymer and their polymeric compositions with other vinyl polymers.