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：US20250032660A1

公开(公告)日：2025-01-30

申请号：US18716544

申请日：2022-12-15

Applicant: DIRECTA PLUS S.P.A.

Inventor： Laura Giorgia Rizzi ,  Giulio Giuseppe Cesareo

IPC: A61L15/18 ,  A61L15/44

Abstract: Use of a textile article containing graphene to produce a bandage to be applied on wounds, wherein said graphene comprises graphene nano-platelets in which at least 90% has a lateral dimension (x, y) from 500 to 50000 nm and a thickness (z) from 0.34 to 50 nm, and wherein said textile article comprises from 0.01 to 20 g of said graphene per square meter.

公开(公告)号：US20230295870A1

公开(公告)日：2023-09-21

申请号：US18018612

申请日：2021-07-21

Applicant: DIRECTA PLUS S.P.A.

Inventor： Giulio Giuseppe Cesareo ,  Laura Giorgia Rizzi ,  Alessandra Bambini

IPC: D06N3/14 ,  D06N3/00

CPC classification number: D06N3/145 ,  D06N3/0011 ,  D06N3/0036 ,  D06N3/0063 ,  D06N3/0097 ,  D06N2201/02 ,  D06N2203/068 ,  D06N2205/12 ,  D06N2211/10 ,  D06N2209/041 ,  D06N2211/28

Abstract: Method for making a thermally and electrically conductive coating on natural or synthetic leather comprising the deposition of several layers based on aliphatic polyurethanes, with an intermediate layer, having a thickness from 10 to 50 μm, comprising graphene nano-platelets, wherein at least 90% has a lateral dimension (x, y) from 50 to 50000 μm and a thickness (z) from 0.34 to 50 nm, and wherein the C/O ratio is ≥100:1.

公开(公告)号：US20230030305A1

公开(公告)日：2023-02-02

申请号：US17874747

申请日：2022-07-27

Applicant: Nant Holdings IP, LLC ,  Directa Plus, S.p.A.

Inventor： Patrick Soon-Shiong ,  Giulio Giuseppe Cesareo ,  Laura Giorgia Rizzi

IPC: C01B32/192 ,  H01M10/36 ,  H01M10/0525

Abstract: Devices and methods are presented that comprise graphene platelets with controlled dimension and high carbon to oxygen ratio, and that further include a heteroatom or heteroionic species, an alkylammonium polysulfide, or both, preferably non-covalently bound to the graphene platelets. Such compositions have significantly improved conductive properties as opposed to unmodified graphene platelets and can be easily produced at mass quantities and low cost.

公开(公告)号：US11426636B2

公开(公告)日：2022-08-30

申请号：US16468358

申请日：2017-12-12

Applicant: DIRECTA PLUS S.P.A.

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

IPC: A63B37/04 ,  A63B37/00 ,  C08K3/04 ,  C08F36/06

Abstract: Golf ball consisting of an inner part comprising at least an elastomeric polymer and a reinforcing agent comprising graphene nano-platelets in which at least 90% of the nano-platelets has a lateral size (x, y) from 50 to 50,000 nm and a thickness (z) from 0.34 to 45 nm, and a C/O ratio ≥100:1.

公开(公告)号：US10457557B2

公开(公告)日：2019-10-29

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: C01B32/19 ,  B82Y30/00 ,  B82Y40/00

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：US20160185981A1

公开(公告)日：2016-06-30

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

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.

Abstract translation: 一种阻燃组合物，其包含石墨烯纳米片和磺化芳族化合物与甲醛的缩合产物，其中石墨烯与缩合产物之间的w / w比在1:15至4:1的范围内。 组合物可以是施加到待处理制品表面的水分散体的形式。 即使在相对适量的应用中，该组合物具有最佳的阻燃性能。

公开(公告)号：US20150376014A1

公开(公告)日：2015-12-31

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: C01B31/04 ,  C08K3/04 ,  C09D7/12 ,  D06M11/74

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.

Abstract translation: 5至50重量％浓度的分散体，其水中的石墨烯纳米颗粒的横向尺寸为10至5000nm，厚度为0.34至30nm。 生产方法包括在膨胀石墨薄片的水中分散，然后用100至2000W的能量水平进行超声波处理1至100小时。