公开(公告)号：WO2023015069A1

公开(公告)日：2023-02-09

申请号：PCT/US2022/073140

申请日：2022-06-24

Applicant: DUPONT SAFETY & CONSTRUCTION, INC.

Inventor： DEMBROSKY, Chris ,  WICKS, Roger Curtis

IPC: D21H13/26 ,  B32B9/04 ,  D21H27/00 ,  D21H27/30 ,  D21H27/38 ,  H01B3/47 ,  B32B5/02 ,  B32B29/00

Abstract: An aramid paper suitable for use as electrical insulation comprising a first outer layer and a second outer layer, each of which comprising 70 to 30 weight percent aramid floc and 30 to 70 weight percent aramid fibrids, and each of which being free of mica and having a first face and a second face; an inner layer comprising 50 to 70 weight percent aramid material and 30 to 50 weight percent mica and having a first face and a second face; wherein the first face of the first outer layer is a first outer face of the aramid paper, and the second face of the first outer layer is coextensive with and bound face-to-face with the first face of the inner layer solely by fibrids in the first outer layer and the inner layer; and wherein the first face of the second outer layer is coextensive with and bound face-to-face with the second face of the inner layer solely by fibrids in the second outer layer and the inner layer, and the second face of the second outer layer is a second outer face of the aramid paper; the aramid paper having a total of 25 to 40 weight percent mica.

公开(公告)号：WO2022193043A1

公开(公告)日：2022-09-22

申请号：PCT/CN2021/080689

申请日：2021-03-15

Applicant: DUPONT SAFETY & CONSTRUCTION, INC. ,  DUPONT (CHINA) RESEARCH & DEVELOPMENT AND MANAGEMENT CO., LTD.

Inventor： SHAO, Qi

IPC: H01M10/658 ,  B32B5/02

Abstract: A laminate useful as cell-to-cell insulation and cushion for batteries, the laminate having a central insulative and cushioning area and a periphery seal area, the central insulative and cushioning area comprising, in order: 1) a first outer layer of paper comprising an aramid material; 2) an inner layer comprising a layer of inorganic short fibers and a layer of foam; and 3) a second outer layer of paper comprising aramid material; the periphery seal area being void of the inner layer and being formed by adhering the first and second outer layers of paper to one another; and wherein the periphery seal area extends around the periphery of the central insulative and cushioning area.

公开(公告)号：WO2021188418A1

公开(公告)日：2021-09-23

申请号：PCT/US2021/022324

申请日：2021-03-15

Applicant: DUPONT SAFETY & CONSTRUCTION, INC.

Inventor： AFSHARI, Mehdi ,  KANG, Byoung Sam

IPC: H01M50/423 ,  D21H13/26 ,  H01M50/44 ,  H01M50/446 ,  H01M50/494 ,  H01M50/497 ,  H01M10/052 ,  H01M10/056 ,  H01M50/431

Abstract: A solid-state composite electrolyte, suitable for use in solid-state batteries, and a battery comprising same, the solid-state composite electrolyte comprising 70 to 99 weight percent inorganic solid electrolyte and 1 to 30 weight percent aramid polymer fibrils, based on the total weight of the inorganic solid electrolytes and aramid fibrils in the solid-state composite electrolyte, wherein the aramid polymer fibrils have: i) a diameter of 10 to 2000 nanometers, ii) a length of 0.2 to 3 millimeters, iii) a specific surface area of 3 to 40 square meters/gram, and iv) a Canadian Standard Freeness of 0 to 100 milliliters; the solid-state composite electrolyte having a thickness of 5 to 1000 micrometers.

公开(公告)号：WO2023059989A1

公开(公告)日：2023-04-13

申请号：PCT/US2022/076852

申请日：2022-09-22

Applicant: DUPONT SAFETY & CONSTRUCTION, INC.

Inventor： BYOUNG KANG, Sam ,  AFSHARI, Mehdi ,  FRANCE, Brian

IPC: D21H19/30 ,  D21H21/52 ,  D21H13/26 ,  H01M50/403 ,  H01M50/423 ,  H01M50/4295 ,  H01M50/44 ,  H01M50/449

Abstract: A nonwoven sheet material comprising a substrate and an applied fibril covering on said substrate, and process for making same, wherein the substrate is a paper, a spunbonded fibrous sheet, or a fibrous or non-fibrous membrane, and wherein the applied fibril covering comprises fibrils having a diameter of 1 to 5000 nanometers, a length of 0.2 to 3 millimeters, a specific surface area of 3 to 40 square meters/gram, and a Canadian Standard Freeness of 0 to 10 milliliters, the fibrils comprising an aramid polymer.

公开(公告)号：WO2023004278A1

公开(公告)日：2023-01-26

申请号：PCT/US2022/073827

申请日：2022-07-18

Applicant: DUPONT SAFETY & CONSTRUCTION, INC. ,  COVEME S.P.A.

Inventor： GAUSSENS, Benjamin ,  VERCESI, Giorgio Patrizio ,  D'ARCO, Luigi

IPC: D21H13/26 ,  D21H17/37 ,  D21H17/68 ,  H01B3/02 ,  H01B3/30 ,  H01B3/44 ,  H01B3/52 ,  H01B3/04 ,  D21H27/00 ,  D21H27/30 ,  D21H27/32 ,  D21H27/34 ,  D21H27/38

Abstract: The present invention relates to a multilayer laminate comprising at least three layers, wherein the two outer layers are each nonwoven backing sheet (7) containing a crystalline silicate mineral powder impregnated with a coating of an impregnating resin based on acrylate derivatives, which is suitable for increasing the compactness of the insulating sheet and for preventing the silicate mineral powder from detaching from the aramid fiber during use; the multilayer laminate having an inner layer being free of crystalline silicate mineral powder that comprises either i) heat resistant floc and binder, or ii) heat resistant polymeric film. The impregnating resin also comprises an organic solvent, which is capable of reducing the viscosity thereof and of promoting its deep penetration into the sheet. In addition, the impregnating resin comprises a UV polymerization photoinitiator which is suitable for curing the resin, only after said resin has been applied to the sheet and has penetrated deeply therein. The invention also describes the method for impregnating the insulating sheets.

公开(公告)号：WO2022031302A1

公开(公告)日：2022-02-10

申请号：PCT/US2020/052052

申请日：2020-09-22

Applicant: DUPONT SAFETY & CONSTRUCTION, INC.

Inventor： AFSHARI, Mehdi ,  KANG, Byoung Kang ,  FRANCE, Brian R.

IPC: D21H13/26 ,  D21H15/10 ,  D21H17/34 ,  F16D69/02

Abstract: A paper suitable for use as a separator or thermal or fire insulation for use in or with electrochemical cells, and an electrochemical cell comprising the same, the paper having 90 to 99 weight percent aramid fibrous pulp comprising aramid polymer fibrils and 1 to 10 weight percent polyvinylpyrrolidone present as a coating on the surface of the fibers, the paper having a thickness of 10 to 40 micrometers and a tensile strength of at least 15 megapascals or greater.

公开(公告)号：WO2021055750A1

公开(公告)日：2021-03-25

申请号：PCT/US2020/051495

申请日：2020-09-18

Applicant: DUPONT SAFETY & CONSTRUCTION, INC.

Inventor： NOBBEE, Wazir ,  THROWER II, Jesse C. ,  KATSAROS, James Dean ,  COSTEUX, Stephane ,  NEILL, John ,  LIEBURN, William Brian ,  THOMAS, Bryn

IPC: E04C2/38

Abstract: A composite structural board having a structural board and a water-resistant barrier (WRB) sheet, and a wall system comprising same, wherein a face of the structural board is discontinuously attached to the inner face of the WRB sheet solely by a first adhesive, the WRB sheet fully covering the face of the structural board; wherein the unattached areas between the face of the structural board and the inner face of the WRB sheet define paths by which a liquid can move between the face of the structural board and the inner face of the WRB sheet; in some instances the WRB sheet material extends beyond at least one edge of the structural board forming a WRB sheet flap.

公开(公告)号：WO2021046025A1

公开(公告)日：2021-03-11

申请号：PCT/US2020/048894

申请日：2020-09-01

Applicant: DUPONT SAFETY & CONSTRUCTION, INC.

Inventor： HU, Yingxiang

IPC: D02G3/44

Abstract: The present invention provides a multi-ply twisted yarn for a cut- resistant fabric, and the multi-ply twisted yarn comprises (i) at least a first single yarn (1) having a skin-core structure, wherein the skin comprises aromatic polyamide staple fibers (11) and the core comprises tungsten filaments (12), and (ii) at least a second single yarn (2) having a skin-core structure, wherein the skin comprises cut- resistant staple fibers (21), the core comprises at least an elastomer filament (22), and the cut-resistant staple fibers of the second single yarn are selected from one or more of aromatic polyamide staple fibers, aliphatic polyamide staple fibers and polyethylene staple fibers. The present invention further provides a cut-resistant fabric comprising the multi-ply twisted yarn and a protective product comprising the cut-resistant fabric.

公开(公告)号：WO2020117468A1

公开(公告)日：2020-06-11

申请号：PCT/US2019/062155

申请日：2019-11-19

Applicant: DUPONT SAFETY & CONSTRUCTION, INC.

Inventor： ALLEYNE, Roberta, Espinoza

IPC: A62B17/04 ,  A62B18/08

Abstract: A protective garment comprising a hood with a face area, the face area provided with an elastomeric interface having an opening for engaging and demountably sealing a full-face mask or full-face respirator to the hood, the opening having a forehead edge and the chin edge that are both incurvate edges with respect to the center of the opening, and two cheek edges that are excurvate edges with respect to the center of the opening; the opening further having a centerline horizontal dimension between the first and second cheek edges and a centerline vertical dimension between the forehead edge and the chin edge; the centerline horizontal dimension to centerline vertical dimension aspect ratio being 1.5 or greater.

公开(公告)号：WO2023044202A1

公开(公告)日：2023-03-23

申请号：PCT/US2022/074584

申请日：2022-08-05

Applicant: DUPONT SAFETY & CONSTRUCTION, INC.

Inventor： BADER, Yves

IPC: A41D19/00 ,  A41D19/015 ,  G08B31/00 ,  G08B17/06

Abstract: A glove comprises a textile component and an electronic module component wherein the textile component comprises in order: a flame-resistant fabric having inner and outer surfaces, a first temperature detecting sensor located next to the inner surface of the flame-resistant fabric, at least one thermally insulating fabric having inner and outer surfaces, a second temperature detecting sensor located on the inner surface of the thermally insulating fabric that is closest to the skin of the wearer and an electronic module component capable of predicting body burns comprising a removable encapsulated electronic module located in a pocket of the glove.