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：US20240035690A1

公开(公告)日：2024-02-01

申请号：US18268751

申请日：2021-12-27

Applicant: DIRECTA PLUS S.P.A.

Inventor： Laura Giorgia Rizzi ,  Giulio Giuseppe Cesareo

IPC: F24F8/108 ,  B01D39/14 ,  D06M11/74

CPC classification number: F24F8/108 ,  B01D39/14 ,  D06M11/74 ,  B01D2239/0258 ,  B01D2239/0407 ,  B01D2239/0442 ,  B01D2239/0464

Abstract: Filter element for air conditioning unit comprising a textile substrate selected from woven fabric and nonwoven fabric, and a composition comprising graphene, in which said graphene is in the form of nano-platelets and is present in an amount from 2 to 20 g of graphene per square meter of textile substrate and is dispersed in a binding agent and applied uniformly on all said textile substrate by means of impregnation.

公开(公告)号：US20230243089A1

公开(公告)日：2023-08-03

申请号：US17927770

申请日：2021-05-24

Applicant: DIRECTA PLUS S.P.A.

Inventor： Giulio Giuseppe Cesareo ,  Laura Giorgia Rizzi

IPC: D06M11/74 ,  B01D39/08 ,  B01D39/16 ,  B01D39/20 ,  D06B3/18 ,  D06M16/00

CPC classification number: D06M11/74 ,  B01D39/083 ,  B01D39/1623 ,  B01D39/2058 ,  D06B3/18 ,  D06M16/00 ,  B01D2239/0442 ,  B01D2239/0241 ,  B01D2239/0258 ,  B01D2239/0464 ,  B01D2239/0618 ,  B01D2239/0627 ,  B01D2239/10 ,  D06M2101/20

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：US20230225430A1

公开(公告)日：2023-07-20

申请号：US17927768

申请日：2021-05-24

Applicant: DIRECTA PLUS S.P.A.

Inventor： Giulio Giuseppe Cesareo ,  Laura Giorgia Rizzi

IPC: A41D13/11 ,  B82Y30/00 ,  B01D71/02

CPC classification number: A41D13/11 ,  B82Y30/00 ,  B01D71/0211 ,  B01D2239/0442 ,  B01D2239/0241

Abstract: Textile article comprising a textile substrate to which graphene is applied in an amount from 0.5 to 20 g of graphene per square meter of textile substrate, wherein said graphene is dispersed in a polymeric binder and forms a thermal circuit heatable by exposure to electromagnetic radiation. There is also described a filter comprising said textile article, for example a face mask for personal health protection.

公开(公告)号：US20210289883A1

公开(公告)日：2021-09-23

申请号：US17258502

申请日：2019-06-20

Applicant: DIRECTA PLUS S.P.A.

Inventor： Giulio Giuseppe Cesareo ,  Massimiliano Bianchi ,  Antonino Di Pasquale

IPC: A43B13/04 ,  C08L7/00 ,  C08L9/00 ,  C08K3/04 ,  A43B13/02

Abstract: A shoe sole comprising an elastomeric composition comprising: (D) 100 phr of a mixture of rubbers comprising: i. from 40 to 70% by weight of an isoprene polymer; ii. from 20 to 50% by weight of polybutadiene; iii. from 10 to 40% by weight of an SBR having a glass transition temperature (Tg) from −60 to −40° C.; (E) from 50 to 100 phr of amorphous carbon black having a surface area greater than 85 m2/g measured with the ASTM D6556 method, and a dibutyl phthalate absorption index (DBPA) greater than 90 measured with the ASTM D2414 method; (F) from 1 to 30 phr of graphene nano-platelets, wherein at least 90% of said graphene nano-platelets has a side dimension (x, y) from 50 to 50000 nm and a thickness (z) of 0.34 to 50 nm, and wherein said graphene nano-platelets have a C/O ratio ≥100:1.

公开(公告)号：US10435837B2

公开(公告)日：2019-10-08

申请号：US14772764

申请日：2014-02-28

Applicant: DIRECTA PLUS S.P.A.

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

IPC: C08K3/04 ,  D06M11/74 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/19 ,  C01B32/194 ,  C09D7/61

Abstract: Concentrated dispersion from 5 to 50% by weight of nanoparticles of graphene in water with a lateral size from 10 to 5000 nm and thickness from 0.34 to 30 nm. The production process comprises the dispersion in water of flakes of expanded graphite and the subsequent treatment with ultrasounds at an energy level of from 100 to 2000 W for a period from 1 to 100 hours.

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.