公开(公告)号：US10773954B2

公开(公告)日：2020-09-15

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: B82Y30/00 ,  B01J19/10 ,  C01B32/19 ,  C01B32/225 ,  C01B32/184 ,  B82Y40/00 ,  C01B32/182

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.

公开(公告)号：US09034297B2

公开(公告)日：2015-05-19

申请号：US12794872

申请日：2010-06-07

Applicant: Robert Angelo Mercuri

Inventor： Robert Angelo Mercuri

IPC: C01B31/04 ,  C01B31/02 ,  B82Y30/00 ,  B82Y40/00

CPC classification number: C01B31/0213 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/152 ,  C01B32/16 ,  C01B32/19 ,  C01B32/225

Abstract: A process for the production of nano-structures is presented, involving providing a graphite flake comprising graphene layers; intercalating the graphite flake to form a graphite intercalation compound exhibiting Stage I, II or III intercalation; and exfoliating the graphite intercalation compound by exposing it to a temperature between about 1600° C. and about 2400° C. such that a plurality of individual graphene layers are separated from the graphite intercalation compound.

Abstract translation: 提出了一种生产纳米结构的方法，包括提供包括石墨烯层的石墨片; 嵌入石墨片以形成表现出阶段I，II或III插层的石墨插层化合物; 并通过将石墨插入化合物暴露于约1600℃至约2400℃的温度，使得多个单独的石墨烯层与石墨插层化合物分离，从而剥离石墨插层化合物。

公开(公告)号：US12225953B2

公开(公告)日：2025-02-18

申请号：US17927770

申请日：2021-05-24

Applicant: DIRECTA PLUS S.P.A.

Inventor： Giulio Giuseppe Cesareo ,  Laura Giorgia Rizzi

IPC: B01D71/02 ,  A41D13/11 ,  B01D39/08 ,  B01D39/16 ,  B01D39/20 ,  B82Y30/00 ,  D06B3/18 ,  D06M11/74 ,  D06M16/00 ,  D06M101/20 ,  D06M101/06 ,  D06M101/32 ,  D06M101/38

Abstract: Method of treating a textile article by impregnation with a water dispersion of graphene nano-platelets in an impregnation bath comprising also a polymeric binder and an anti-migration and wetting agent. Graphene is fixed in the textile article to improve its thermal and electrical conductivity, as well as its filtering power and germ-blocking properties.

公开(公告)号：US12012691B2

公开(公告)日：2024-06-18

申请号：US17781148

申请日：2020-12-02

Applicant: Directa Plus S.p.A.

Inventor： Laura Giorgio Rizzi ,  Giulio Giuseppe Cesareo

IPC: D06M11/74 ,  C08K3/04 ,  C08K3/08 ,  C08K3/22 ,  C09D5/24 ,  C09D7/20 ,  C09D7/40 ,  C09D7/61 ,  C09D175/04 ,  D06M11/45 ,  D06M11/46 ,  D06M11/76 ,  D06M15/263 ,  D06M15/564 ,  D06M15/693 ,  D06M23/16 ,  D06M101/32

CPC classification number: D06M11/74 ,  C09D5/24 ,  C09D7/20 ,  C09D7/61 ,  C09D7/70 ,  C09D175/04 ,  D06M11/45 ,  D06M11/46 ,  D06M11/76 ,  D06M15/263 ,  D06M15/564 ,  D06M15/693 ,  D06M23/16 ,  C08K3/046 ,  C08K3/08 ,  C08K2003/2227 ,  C08K2003/2241 ,  C08K2003/2296 ,  D06M2101/32

Abstract: Method and composition for increasing the electrical and thermal conductivity of a textile article comprising the application of a composition comprising graphene and an inorganic pigment, so as to form a layer that consists of a thermal circuit for optimal management of heat and an electrical circuit for dissipation of the static electricity accumulated on the textile article.

公开(公告)号：US20220411993A1

公开(公告)日：2022-12-29

申请号：US17781148

申请日：2020-12-02

Applicant: Directa Plus S.p.A.

Inventor： Laura Giorgio Rizzi ,  Giulio Giuseppe Cesareo

IPC: D06M11/74 ,  D06M11/76 ,  D06M11/45 ,  D06M11/46 ,  D06M15/564 ,  D06M15/693 ,  D06M23/16 ,  D06M15/263 ,  C09D5/24 ,  C09D7/61 ,  C09D7/20 ,  C09D7/40 ,  C09D175/04

Abstract: Method and composition for increasing the electrical and thermal conductivity of a textile article comprising the application of a composition comprising graphene and an inorganic pigment, so as to form a layer that consists of a thermal circuit for optimal management of heat and an electrical circuit for dissipation of the static electricity accumulated on the textile article.

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：US20250066627A1

公开(公告)日：2025-02-27

申请号：US18719293

申请日：2023-05-02

Applicant: DIRECTA PLUS S.P.A.

Inventor： Giovanni Broggi

IPC: C09D7/40 ,  C09D7/61

Abstract: Granular composition comprising a particulate material selected from pigments and fillers, graphene nano-platelets and a binder, and use of this composition to prepare paints, varnishes and inks.

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.