公开(公告)号：US20200062914A1

公开(公告)日：2020-02-27

申请号：US16610982

申请日：2018-05-03

申请人： DIRECTA PLUS S.P.A. ,  NOVARESIN S.P.A.

发明人： Laura Giorgia Rizzi ,  Aldo Ciarleglio ,  Giulio Giuseppe Cesareo ,  Ambrogio Donghi

IPC分类号： C08J5/18 ,  C09J11/04 ,  C09J7/25 ,  C09J7/29 ,  C09J7/35 ,  C08K3/04 ,  C08K3/36 ,  B32B27/08 ,  B32B27/18 ,  B32B27/40 ,  B32B27/32 ,  B32B37/10 ,  B29C41/00

摘要： A polyurethane film comprising a polyurethane resin and graphene, wherein the graphene is present in an amount of 1 to 30% by weight on the total weight of the film and consists of graphene nano-platelets, wherein at least 90% has a lateral dimension (x, y) of 50 to 50000 nm and a thickness (z) of 0.34 to 50 nm, wherein the lateral dimension is always greater than the thickness (x, y>z), wherein the C/O ratio is ≥100:1, and a preparation process thereof.

公开(公告)号：US20170190583A1

公开(公告)日：2017-07-06

申请号：US15313205

申请日：2015-06-16

申请人： Directa Plus S.P.A.

发明人： Giulio Cesareo ,  Maria Riccardo Parrini ,  Laura Giorgia Rizzi

IPC分类号： C01B31/02 ,  C01B31/04

CPC分类号： C01B32/19 ,  B82Y30/00 ,  B82Y40/00 ,  C01B2204/04 ,  C01B2204/32 ,  C01P2004/24 ,  C01P2006/80 ,  Y10S977/734 ,  Y10S977/842

摘要： Process for producing graphene nanoplatelets, comprising expanding flakes of intercalated graphite and collection of the same in a dispersing medium with forming of a dispersion that is subjected to exfoliation and size reduction treatment carried out by high pressure homogenization in a high shear homogenizer. A dispersion of graphene is obtained in the form of nanoplatelets, at least 90% of which have a lateral size (x, y) from 50 to 50,000 nm and a thickness (z) from 0.34 to 50 nm.

公开(公告)号：US20240237641A1

公开(公告)日：2024-07-18

申请号：US18289378

申请日：2022-05-03

申请人： DIRECTA PLUS S.P.A.

发明人： Laura Giorgia Rizzi ,  Giulio Cesareo

IPC分类号： A01N25/34 ,  A01N25/24 ,  A01N35/02 ,  A01N35/06 ,  A01N43/16 ,  A01P1/00 ,  D06M11/74 ,  D06M13/175 ,  D06M15/03 ,  D06M15/11 ,  D06M15/13 ,  D06M16/00 ,  D06M101/30

CPC分类号： A01N25/34 ,  A01N25/24 ,  A01N35/02 ,  A01N35/06 ,  A01N43/16 ,  A01P1/00 ,  D06M11/74 ,  D06M13/175 ,  D06M15/03 ,  D06M15/11 ,  D06M15/13 ,  D06M16/00 ,  D06M2101/30

摘要： Composition for the treatment of textile articles comprising graphene and a binder agent dispersed in an aqueous medium, in which the binder agent is a polysaccharide selected from the group consisting of starch, glycogen, chitosan, pectin, salts of alginic acid or alginates, dextran, chitin, and glycans, and textile article treated with said composition.

公开(公告)号：US12037741B2

公开(公告)日：2024-07-16

申请号：US16977173

申请日：2019-04-17

申请人： DIRECTA PLUS S.P.A.

发明人： Laura Giorgia Rizzi ,  Giulio Cesareo ,  Razvan Popescu

IPC分类号： D06M11/74 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/182 ,  D06M23/16

CPC分类号： D06M11/74 ,  C01B32/182 ,  D06M23/16 ,  B82Y30/00 ,  B82Y40/00 ,  C01B2204/22 ,  C01B2204/32

摘要： Textile article with a pattern comprising graphene, defining a surface with empty portions and full portions, with a percentage of coverage from 10 to 70% of the surface defined by the pattern, so as to form a thermal circuit for optimal management of the heat absorbed and of the breathability of the article, and the process for its preparation.

公开(公告)号：US20190185348A1

公开(公告)日：2019-06-20

申请号：US16324831

申请日：2017-08-09

申请人： Directa Plus S.p.A.

发明人： Giulio Cesareo ,  Annalisa Pola ,  Laura Giorgia Rizzi

IPC分类号： C02F1/28 ,  B01J20/20 ,  B01J20/28 ,  C02F1/00

CPC分类号： C02F1/283 ,  B01J20/20 ,  B01J20/28011 ,  B01J20/28059 ,  C02F1/001 ,  C02F2101/32 ,  C02F2103/10 ,  C02F2303/18

摘要： Process for the treatment of water containing low quantities of hydrocarbons (as dispersed or dissolved or emulsified) by means of expanded graphite having an apparent density from 2 to less than 5 g/l, wherein said hydrocarbons are present in a quantity less than or equal to 1 g/l, a specific surface area from 50 to 100 m2/g and a carbon/oxygen ratio (C:O)≥100. The expanded graphite is mixed vigorously for a short time with the water contaminated by hydrocarbons and easily separated at the end of the treatment.

公开(公告)号：US09909015B2

公开(公告)日：2018-03-06

申请号：US14910488

申请日：2014-08-07

申请人： DIRECTA PLUS S.p.A.

发明人： Giulio Cesareo ,  Maria Riccardo Parrini ,  Laura Giorgia Rizzi

IPC分类号： C09D5/18 ,  C08K3/04 ,  C09K21/06

CPC分类号： C09D5/18 ,  C08G16/0237 ,  C08K3/04 ,  C08K3/042 ,  C09D161/00 ,  C09K21/06

摘要： A flame retardant composition comprising graphene nanoplatelets and a condensation product of a sulfonated aromatic compound with formaldehyde, wherein the w/w ratio between the graphene and the condensation product is in the range of 1:15 to 4:1. The composition may be in the form of a water dispersion applied to the surface of the article to be treated.The composition has optimal flame retardant properties even when applied in relatively modest quantities.

公开(公告)号：US20170190581A1

公开(公告)日：2017-07-06

申请号：US15313183

申请日：2015-06-16

申请人： Directa Plus S.P.A.

发明人： Giulio Cesareo ,  Maria Riccardo Parrini ,  Laura Giorgia Rizzi

IPC分类号： C01B31/02 ,  B82Y30/00 ,  B82Y40/00

摘要： Process for producing pristine graphene nanoplatelets, comprising the expansion of flakes of intercalated graphite and the collection thereof in water with formation of a dispersion in the substantial absence of surfactants, followed by an exfoliation and size reduction treatment carried out using ultrasonication of the aqueous dispersion or using high pressure homogenization thereof in a high shear homogenizer. A dispersion of pristine graphene is obtained in the form of nanoplatelets, at least 90% of which have a lateral size (x, y) from 50 to 50,000 nm and a thickness (z) from 0.34 to 50 nm, having a C/O ratio ≧100:1 and a high electrical conductivity.