公开(公告)号：US20240309587A1

公开(公告)日：2024-09-19

申请号：US18435767

申请日：2024-02-07

申请人： The Regents of the University of California

发明人： You-Lo Hsieh ,  Xuezhu Xu

IPC分类号： D21H11/18 ,  C01B32/184 ,  C01B32/21 ,  D21F13/00 ,  D21H17/67 ,  D21H27/00

CPC分类号： D21H11/18 ,  C01B32/184 ,  C01B32/21 ,  D21F13/00 ,  D21H17/67 ,  D21H27/00

摘要： The present invention describes a method for preparing graphene by mixing graphite and carbon nanofibrils. The prepared graphene can be used to form nenopeper. The present invention also provides a method of preparing nanopaper by suspending cellulose nanofibrils and graphene, followed by vacuum filtering of the suspension.

公开(公告)号：US11952718B2

公开(公告)日：2024-04-09

申请号：US17417882

申请日：2020-01-23

申请人： Stora Enso OYJ

发明人： Frank Peng ,  Kaj Backfolk ,  Isto Heiskanen ,  Teija Laukala

IPC分类号： D21H11/18 ,  D21H17/67 ,  D21H19/52 ,  D21H23/28 ,  D21H23/48 ,  D21H23/50 ,  D21H27/10 ,  D21H27/32 ,  D21H27/38 ,  D21H27/40

CPC分类号： D21H11/18 ,  D21H17/67 ,  D21H19/52 ,  D21H23/28 ,  D21H23/48 ,  D21H23/50 ,  D21H27/10 ,  D21H27/32 ,  D21H27/38 ,  D21H27/40

摘要： The invention discloses a paperboard comprising a base ply, a top ply, and an intermediate layer disposed in-between the at least one base ply and the top ply. The intermediate layer comprises pigment and microfibrillated cellulose (MFC). The application of an intermediate layer comprising pigment and MFC in-between the base ply and the top ply gives rise to improved optical properties of the paperboard, even when using an uncoated top ply having a low grammage This makes it possible to reduce the grammage of the top ply and still obtain good optical properties.

公开(公告)号：US20240035235A1

公开(公告)日：2024-02-01

申请号：US18005185

申请日：2021-06-09

申请人： Schaeffler Technologies AG & Co. KG

发明人： Stefan STEINMETZ ,  Gregor Mattern

IPC分类号： D21H27/28 ,  D21H21/18 ,  D21H17/48 ,  D21H23/08

CPC分类号： D21H27/28 ,  D21H21/18 ,  D21H17/48 ,  D21H23/08 ,  D21H17/67

摘要： A method is for producing a wet-running friction paper, at least containing a fiber fraction consisting of at least one type of fiber, a fraction of at least one filler, and a fraction of a binder based on phenol resin. The fiber fraction, the filler fraction and the binder dissolved as a phenolate solution are processed together in a paper production process to form a pulp, and the binder is subsequently precipitated by means of a precipitating agent, preferably diluted sulfuric acid, and the pulp applied to a long screen is dried and cured while the temperature is raised.

公开(公告)号：US11753771B2

公开(公告)日：2023-09-12

申请号：US15562943

申请日：2016-03-31

申请人： Stora Enso OYJ

发明人： Elina Skerfe ,  Erik Mattsson

IPC分类号： D21H17/67 ,  D21H17/20 ,  D21H17/70 ,  C01F11/18 ,  D21C5/02 ,  D21J1/00 ,  D21H17/69 ,  C09C3/04 ,  C09C1/02

CPC分类号： D21H17/675 ,  C01F11/181 ,  C09C1/021 ,  C09C3/04 ,  D21C5/02 ,  D21H17/20 ,  D21H17/67 ,  D21H17/69 ,  D21H17/70 ,  D21J1/00 ,  C01P2002/80 ,  C01P2006/60 ,  Y02W30/64

摘要： The invention provides a method of producing a filler comprising calcium carbonate (PCC), preferably to be used in paper or paper board production or in fibre based composites. The method of the invention comprises the steps of; —providing fly ash generated in paper or paper board production; —fractionating said fly ash in at least one step, whereby a coarser fraction is separated from a finer fraction; —forming a suspension of said coarser fraction; —adding carbon dioxide to said suspension to form precipitated calcium carbonate. The method of the invention avoids problems with high amounts of arsenic and heavy metals in the production of filler comprising PCC, when using ash generated in paper or paper board production as a raw material. It has been shown that harmful elements, such as arsenic and heavy metals, are primarily accumulated in the finer fractions of the fly ash. Thus, by using the coarser fraction in the step of carbonation, the amount of arsenic and heavy metals in the final product is reduced.

公开(公告)号：US20230175205A1

公开(公告)日：2023-06-08

申请号：US18062384

申请日：2022-12-06

申请人： NORTH CAROLINA STATE UNIVERSITY ,  Cotton Incorporated

发明人： Mary Ann ANKENY ,  Matthew J. FARRELL ,  Ronalds GONZALEZ ,  Hasan JAMEEL

IPC分类号： D21D1/34 ,  D21D1/40 ,  D21H17/67 ,  D21B1/14

CPC分类号： D21D1/34 ,  D21B1/14 ,  D21D1/40 ,  D21H17/67

摘要： Disclosed is mechanical and decolorization pretreatment of cotton-containing textiles, such as “trash” feedstock in terms of end-of-life-cotton textiles, that may be used to produce sugar without the use of harsh pretreatments conditions.

公开(公告)号：US20190127918A1

公开(公告)日：2019-05-02

申请号：US16166296

申请日：2018-10-22

申请人： E I DU PONT DE NEMOURS AND COMPANY

发明人： MEHDI AFSHARI

IPC分类号： D21H27/00 ,  D21H13/26 ,  D21H15/10 ,  D21H19/12 ,  D21H23/04 ,  D21H19/24 ,  D21H23/66 ,  D21H19/84 ,  D21H21/14 ,  D21H17/68 ,  D21H17/67

CPC分类号： D21H27/00 ,  D21H13/26 ,  D21H15/10 ,  D21H17/34 ,  D21H17/67 ,  D21H17/675 ,  D21H17/68 ,  D21H19/12 ,  D21H19/24 ,  D21H19/84 ,  D21H21/14 ,  D21H23/04 ,  D21H23/66 ,  F16D69/026 ,  F16D2200/0095

摘要： A paper comprises from 60 to 99 weight percent of a aramid fibrous pulp and from 1 to 40 weight percent of a polyvinylpyrrolidone coating on the fiber surface, the coating being neither chemically nor electrostatically bound to the fibers. A friction paper composite comprising the paper and a resin coating is also described.

公开(公告)号：US20190055696A1

公开(公告)日：2019-02-21

申请号：US15765137

申请日：2016-09-30

申请人： ECOLAB USA INC.

发明人： Qinglong RAO

IPC分类号： D21H17/69 ,  D21H17/67 ,  D21H17/28 ,  D21H17/29 ,  D21H17/45 ,  D21H17/43 ,  D21H17/68 ,  D21H21/18

CPC分类号： D21H17/69 ,  D21H17/28 ,  D21H17/29 ,  D21H17/37 ,  D21H17/375 ,  D21H17/43 ,  D21H17/455 ,  D21H17/67 ,  D21H17/675 ,  D21H17/68 ,  D21H17/74 ,  D21H21/18

摘要： Method of papermaking comprises: treating filler with a starch and a flocculant to form a filler floc; combining the filler floc with the cellulose fiber stock; and forming a paper mat from the combination of filler floc and cellulose fiber stock. The method have been found to result in larger particle sizes for the filler flocs, improved shear stability, and improved sheet strength in the paper mat.

公开(公告)号：US20180355248A1

公开(公告)日：2018-12-13

申请号：US15779158

申请日：2016-11-25

申请人： STORA ENSO OYJ

发明人： Kaj Backfolk ,  Isto Heiskanen ,  Carl-Mikael Tag ,  Ville Ribu

IPC分类号： C09K17/52 ,  C05G3/02 ,  C05G3/04 ,  D21H15/10 ,  D21H21/36 ,  D21H21/28 ,  D21H17/67 ,  D21H19/52 ,  A01G13/02

CPC分类号： C09K17/52 ,  A01G13/0275 ,  C05G3/02 ,  C05G3/04 ,  D21H11/18 ,  D21H15/10 ,  D21H17/67 ,  D21H19/34 ,  D21H19/52 ,  D21H21/16 ,  D21H21/28 ,  D21H21/36 ,  D21H27/30

摘要： The present invention relates to a ground cover in the form of a mulch, comprising a microfibrillated polysaccharide. Also methods for its manufacture and use thereof are disclosed.

公开(公告)号：US20180312659A1

公开(公告)日：2018-11-01

申请号：US15735623

申请日：2016-09-30

申请人： IMERYS TALC EUROPE

发明人： Jérôme CREPIN-LEBLOND ,  Tarquin CROUCH

IPC分类号： C08K3/34 ,  C08K3/26

CPC分类号： C08K3/34 ,  C08J9/0066 ,  C08K3/346 ,  C08K7/14 ,  C08K9/04 ,  C08K9/08 ,  D21H13/40 ,  D21H17/63 ,  D21H17/67 ,  D21H17/675 ,  D21H17/68 ,  D21H17/69

摘要： A filled composition comprising a substrate, functional filler, and an inorganic additive for reducing the odour of the filled composition, wherein the inorganic additive is present in an amount sufficient to reduce the odour of the filled composition absent the inorganic additive, and related uses, methods and articles of manufacture; and a filled composition comprising surface treated mineral filler to improve UV stability and/or reduce or retard UV induced degradation.

公开(公告)号：US20180265370A1

公开(公告)日：2018-09-20

申请号：US15543635

申请日：2016-01-14

申请人： Imerys USA, Inc.

发明人： Christopher PAYNTER ,  Kalena STOVALL ,  Douglas WICKS ,  Gavin BUTLER-LEE ,  Parvin GOLBAYANI ,  Nigel Victor JARVIS ,  Graham M. PRING ,  David TAYLOR ,  Ricardo M. PEREZ

IPC分类号： C01F11/18 ,  C09C1/02

CPC分类号： C01F11/18 ,  B01D53/501 ,  B01D53/502 ,  B01D2251/404 ,  B01D2251/606 ,  C01F5/24 ,  C01F5/40 ,  C01F11/181 ,  C01F11/182 ,  C01F11/183 ,  C01F11/185 ,  C01F11/464 ,  C01F11/468 ,  C01P2002/76 ,  C01P2004/03 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/12 ,  C01P2006/60 ,  C01P2006/80 ,  C04B14/28 ,  C08K3/26 ,  C08K2003/265 ,  C09C1/021 ,  D21H17/67 ,  D21H17/675

摘要： A process for converting gypsum into precipitated calcium carbonate including reacting a mixture comprising gypsum and a seed, a mineral acid, or both with at least one carbonate source, whereby precipitated calcium carbonate is produced in the form of calcite and/or aragonite directly without conversion from a vaterite polymorph. Also, a process for converting gypsum into precipitated calcium carbonate including providing a mixture comprising i) gypsum ii) a seed, a mineral acid, or both iii) at least one additive selected from the group consisting of ammonium sulfate, an organic acid, or an iron material, and reacting the mixture with at least one carbonate source to produce precipitated calcium carbonate in the form of vaterite. The precipitated calcium carbonates having desired and unique compositions, polymorph and crystal size characteristics formed by these processes.