公开(公告)号：US20210156078A1

公开(公告)日：2021-05-27

申请号：US16977173

申请日：2019-04-17

Applicant: DIRECTA PLUS S.P.A.

Inventor： Laura Giorgia Rizzi ,  Giulio Cesareo ,  Razvan Popescu

IPC: D06M11/74 ,  D06M23/16 ,  C01B32/182

Abstract: 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 forma 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：US10913666B2

公开(公告)日：2021-02-09

申请号：US16324831

申请日：2017-08-09

Applicant: Directa Plus S.p.A.

Inventor： Giulio Cesareo ,  Annalisa Pola ,  Laura Giorgia Rizzi

IPC: C02F1/28 ,  B01J20/28 ,  B01J20/20 ,  B01D17/02 ,  C02F1/00 ,  C02F101/32 ,  C02F103/10

Abstract: 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：US20200062914A1

公开(公告)日：2020-02-27

申请号：US16610982

申请日：2018-05-03

Applicant: DIRECTA PLUS S.P.A. ,  NOVARESIN S.P.A.

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

IPC: 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

Abstract: 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

Applicant: Directa Plus S.P.A.

Inventor： Giulio Cesareo ,  Maria Riccardo Parrini ,  Laura Giorgia Rizzi

IPC: C01B31/02 ,  C01B31/04

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

Abstract: 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

Applicant: DIRECTA PLUS S.P.A.

Inventor： Laura Giorgia Rizzi ,  Giulio Cesareo

IPC: 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 classification number: 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

Abstract: 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

Applicant: DIRECTA PLUS S.P.A.

Inventor： Laura Giorgia Rizzi ,  Giulio Cesareo ,  Razvan Popescu

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

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

Abstract: 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

Applicant: Directa Plus S.p.A.

Inventor： Giulio Cesareo ,  Annalisa Pola ,  Laura Giorgia Rizzi

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

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

Abstract: 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

Applicant: DIRECTA PLUS S.p.A.

Inventor： Giulio Cesareo ,  Maria Riccardo Parrini ,  Laura Giorgia Rizzi

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

CPC classification number: C09D5/18 ,  C08G16/0237 ,  C08K3/04 ,  C08K3/042 ,  C09D161/00 ,  C09K21/06

Abstract: 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

Applicant: Directa Plus S.P.A.

Inventor： Giulio Cesareo ,  Maria Riccardo Parrini ,  Laura Giorgia Rizzi

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

Abstract: 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.