公开(公告)号：US12060679B2

公开(公告)日：2024-08-13

申请号：US17212345

申请日：2021-03-25

申请人： Bradley University ,  The United States of America, as represented by the Secretary of Agriculture

发明人： Brent Tisserat ,  Luke Haverhals ,  Zengshe Liu

IPC分类号： D21C3/02 ,  C08L97/02 ,  D21C3/20 ,  D21C3/22 ,  D21C5/00 ,  D21C5/02 ,  D21H11/12 ,  D21H11/14 ,  D21H21/18 ,  D21H21/34 ,  D21H21/36 ,  D21J3/00 ,  D21J5/00

CPC分类号： D21C3/022 ,  C08L97/02 ,  D21C3/02 ,  D21C3/20 ,  D21C3/22 ,  D21C5/00 ,  D21C5/022 ,  D21H11/12 ,  D21H11/14 ,  D21H21/18 ,  D21H21/34 ,  D21H21/36 ,  D21J3/00 ,  D21J5/00 ,  C08L2201/06

摘要： Unique, inexpensive, and. strong biocomposites are obtained from blending cellulose matrix materials pith lignocellulosic reinforcement materials with the aid of alkaline aqueous solvent and cold temperatures. These lignocellulosic composites (LCs) are produced without use of any thermoplastic resins, adhesives, catalysts, plasticizers or d chemical or physical procedures. The LCs include a matrix and a reinforcement material. The matrix is a cellulose material (e.g., cotton, hemp, flax, or wood) that is liquefied using an aqueous alkaline solvent solution under cold temperatures to more readily adhere and or incorporate/encapsulate the lignocellulosic reinforcements (wood chips, fibers, and other lignocellulosic sources).

公开(公告)号：US12018432B2

公开(公告)日：2024-06-25

申请号：US16996414

申请日：2020-08-18

申请人： GranBio Intellectual Property Holdings, LLC

发明人： Kimberly Nelson ,  Theodora Retsina ,  Lee Hill

IPC分类号： D21B1/00 ,  D21C5/00 ,  D21C9/08 ,  D21C9/10

CPC分类号： D21C5/005 ,  D21C5/00 ,  D21C9/08 ,  D21C9/10 ,  D21B1/00

摘要： In some variations, OCC is screened, cleaned, deinked, and mechanically refined to generate cellulose nanofibrils. The OCC may be subjected to further chemical, physical, or thermal processing, prior to mechanical refining. For example, the OCC may be subjected to hot-water extraction, or fractionation with an acid catalyst, a solvent for lignin, and water. In certain embodiments to produce cellulose nanocrystals, OCC is exposed to AVAP® digestor conditions. The resulting pulp is optionally bleached and is mechanically refined to generate cellulose nanocrystals. In certain embodiments to produce cellulose nanofibrils, OCC is exposed to GreenBox+® digestor conditions. The resulting pulp is mechanically refined to generate cellulose nanofibrils. The site of a system to convert OCC to nanocellulose may be co-located with an existing OCC processing site. The nanocellulose line may be a bolt-on retrofit system to existing infrastructure. In other embodiments, a dedicated plant for converting OCC to nanocellulose is used.

公开(公告)号：US20240158539A1

公开(公告)日：2024-05-16

申请号：US18282453

申请日：2022-03-18

申请人： Suzano S.A. ,  Universidad de Sao Paulo - USP

发明人： Germano SIQUEIRA ,  Valdeir ARANTES ,  Braz DeSouza MAROTTI

IPC分类号： C08B3/10 ,  C08B3/20 ,  C12P7/62 ,  D21C5/00

CPC分类号： C08B3/10 ,  C08B3/20 ,  C12P7/62 ,  D21C5/005

摘要： The present invention relates to a functionalized cellulose in which the cellulose comprises hydrophobic ester groups from fatty acids, and also to processes and methods for functionalizing cellulose that produce cellulose with increased hydrophobicity.

公开(公告)号：US11976417B2

公开(公告)日：2024-05-07

申请号：US17416348

申请日：2019-10-24

申请人： LENZING AKTIENGESELLSCHAFT

发明人： Richard Herchl ,  Christoph Klaus-Nietrost ,  Christian Weilach

IPC分类号： D21C5/00 ,  B29B17/02 ,  D01G11/04 ,  D21C5/02 ,  D21H11/14

CPC分类号： D21C5/00 ,  B29B17/02 ,  D01G11/04 ,  D21C5/022 ,  D21H11/14 ,  D10B2201/02 ,  D10B2331/04

摘要： A recycled cellulose raw material and a method for recycling a cellulose raw material from blended textile waste with high reliability and yielding high raw material quality is shown, the method comprising the steps in the given order: providing the blended textile waste containing at least one cellulose component and at least one synthetic polymer component, treating the blended textile waste in a non-oxidizing aqueous treatment medium in order to degrade the at least one synthetic polymer component, whereby the treatment is carried out at a temperature between 100° C. and 200° C., and obtaining the recycled cellulose raw material from the treated blended textile waste.

公开(公告)号：US11725345B2

公开(公告)日：2023-08-15

申请号：US17177266

申请日：2021-02-17

申请人： STRUCTURED I, LLC

发明人： James E. Sealey ,  Byrd Tyler Miller, IV ,  Kevin Brennan ,  James E. Bradbury ,  Phillip MacDonald ,  Taras Z. Andrukh

IPC分类号： D21H21/20 ,  D21H17/00 ,  D21H17/37 ,  D21H27/00 ,  D21C5/00 ,  D21H17/42 ,  D21H17/55 ,  D21H27/30

CPC分类号： D21H21/20 ,  D21C5/005 ,  D21H17/005 ,  D21H17/375 ,  D21H17/42 ,  D21H17/55 ,  D21H27/002 ,  D21H27/005 ,  D21H27/30

摘要： A method of making an absorbent structure including forming a stock mixture of fibers, a cationic wet strength resin, an anionic polyacrylamide and a cellulase enzyme, and at least partially drying the stock mixture to form a web.

公开(公告)号：US20230132641A1

公开(公告)日：2023-05-04

申请号：US17910377

申请日：2021-03-09

申请人： Infinited Fiber Company Oy

发明人： Ari Harlin ,  Sakari Siren ,  Jani Mäkelä

IPC分类号： C08B15/06 ,  D01F2/02 ,  C08B16/00 ,  D21C9/00 ,  D21C5/00

摘要： According to an example aspect of the present invention, there is provided a method of separating cellulosic fibres and non-cellulosic fibres from a mixed fibre textile material comprising cellulosic and non-cellulosic fibres. The method comprises mechanically disintegrating the textile material to open textile structures in the material, contacting the mechanically opened structures with an acid in a first chemical step, and contacting the mechanically opened structures with an alkaline in a second chemical step.

公开(公告)号：US20230124761A1

公开(公告)日：2023-04-20

申请号：US18066119

申请日：2022-12-14

申请人： EVRNU, SPC

发明人： Stacy Flynn ,  Christopher Stanev

IPC分类号： C08J11/10 ,  C08J11/08 ,  D01F11/08 ,  D01F11/02 ,  D21C5/00 ,  D21C3/20 ,  C08J11/16 ,  D21C3/22 ,  D21C9/00 ,  D21C1/02 ,  D21C9/10 ,  C08J11/18 ,  D21B1/02

摘要： Methods and systems of the present invention use mixed textile feedstock, which may include post-consumer waste garments, scrap fabric and/or other textile materials as a raw feed material to produce isolated cellulose and other isolated molecules having desirable properties that can be used and be used in the textile and apparel industries, and in other industries. A multi-stage process is provided, in which mixed textile feed material is subjected to one or more pretreatment stages, followed by at least two pulping treatments for isolating cellulose molecules and other molecular constituents, such as polyester. The isolated cellulose and polyester molecules may be used in a variety of downstream applications. In one application, isolated cellulose and polyester molecules are extruded to provide regenerated cellulose fibers and regenerated polyester fibers having desirable (and selectable) properties that are usable in various industrial applications, including textile production.

公开(公告)号：US11485989B2

公开(公告)日：2022-11-01

申请号：US16952310

申请日：2020-11-19

申请人： Valmet AB

发明人： Peter Björklund ,  Andreas Averheim

IPC分类号： D21C3/24 ,  D21C7/00 ,  D21C5/00 ,  C12P19/00 ,  C12P19/14 ,  C12P19/02 ,  C13K1/02 ,  D21C7/06 ,  D21C7/08 ,  D21C7/10

摘要： The present invention relates to an improved method and device for treating biomass in which thermally treated biomass is discharged from a pressurized reactor and introduced into a blow tank, wherein the absolute pressure in the blow tank is maintained below atmospheric pressure. The slurry of biomass separated in the blow tank is then enzymatically treated.

公开(公告)号：US20220307002A1

公开(公告)日：2022-09-29

申请号：US17714461

申请日：2022-04-06

申请人： Novozymes, Inc.

发明人： Janine Lin ,  Doreen Bohan ,  Michelle Maranta ,  Leslie DeMars ,  Michael Lamsa ,  Matt Sweeny ,  Mark David Wogulis ,  Elizabeth Znameroski ,  Frank Winther Rasmussen

IPC分类号： C12N9/42 ,  C12N9/02 ,  D21C5/00 ,  D21H17/00 ,  C11D3/386 ,  C12P19/02 ,  C12P19/14

摘要： The present invention relates to GH61 polypeptide variants. The present invention also relates to polynucleotides encoding the variants; nucleic acid constructs, vectors, and host cells comprising the polynucleotides; and methods of using the variants.

公开(公告)号：US20220243399A1

公开(公告)日：2022-08-04

申请号：US17596098

申请日：2020-05-29

申请人： LENZING AKTIENGESELLSCHAFT

发明人： Richard HERCHL ,  Gabriele SCHILD ,  Christian WEILACH

IPC分类号： D21H11/10 ,  D21H11/14 ,  D21H11/06 ,  D21H11/08 ,  D21C1/08 ,  D21C9/10 ,  D21C3/20 ,  D21C3/06 ,  D21C5/00

摘要： A method for providing a treated cellulose-comprising mixed starting material (110), in particular a mixed starting material (110) for forming a, in particular regenerated, cellulosic molded body (102) is described. The method comprises: i) providing (10) a first starting material (101a) which comprises a lignocellulosic raw material, ii) providing (1) a second starting material (101b) which comprises a cellulose-containing lignin-free product, iii) mixing (15) the first starting material (101a) and the second starting material (101b) to a mixed starting material (101), and iv) at least partially commonly treating (20) the first starting material (101a) and the second starting material (101b) for obtaining the treated mixed starting material (101), in particular a mixed pulp.