公开(公告)号：US12077910B2

公开(公告)日：2024-09-03

申请号：US17321990

申请日：2021-05-17

Applicant: GranBio Intellectual Property Holdings, LLC

Inventor： Kimberly Nelson ,  Theodora Retsina ,  Vesa Pylkkanen ,  Mikhail Iakovlev

IPC: D21C3/20 ,  C08B15/08 ,  C08H8/00 ,  D21C3/00 ,  D21C3/06 ,  D21C5/02 ,  D21C9/00 ,  D21C9/10 ,  D21H11/04 ,  D21H11/06 ,  D21H11/20 ,  B82Y40/00

CPC classification number: D21C3/06 ,  C08B15/08 ,  C08H8/00 ,  D21C3/00 ,  D21C3/20 ,  D21C5/02 ,  D21C9/005 ,  D21C9/007 ,  D21C9/10 ,  D21H11/04 ,  D21H11/06 ,  D21H11/20 ,  B82Y40/00 ,  Y02W30/64

Abstract: Some variations provide a process for producing a nanocellulose material, comprising: providing a biomass feedstock comprising a bleached or unbleached pulp material; fractionating the feedstock in the presence of an acid, a solvent for lignin, and water, to generate cellulose-rich solids and a liquid containing hemicellulose and lignin; and mechanically treating the cellulose-rich solids to form cellulose fibrils and/or cellulose crystals, thereby generating a nanocellulose material. The process is preferably co-located with, or adjacent to, a mill that generates the pulp material. There are several advantages of a bolt-on AVAP® nanocellulose plant to an existing pulp mill, as disclosed herein.

公开(公告)号：US11970819B2

公开(公告)日：2024-04-30

申请号：US17796713

申请日：2021-01-20

Applicant: Kimberly-Clark Worldwide, Inc.

Inventor： Stephen M. Lindsay ,  Richmond R. Cohen ,  Kenneth R. Schueler, Jr. ,  Kenneth J. Zwick

IPC: D21H11/20 ,  D21C9/00 ,  D21F11/04 ,  D21H11/04 ,  D21H27/00 ,  D21H27/38 ,  D21H27/40

CPC classification number: D21H11/20 ,  D21C9/005 ,  D21F11/04 ,  D21H27/005 ,  D21H27/38 ,  D21H27/40

Abstract: The present disclosure relates to tissue products comprising crosslinked fibers. The tissue products generally have good formation, such as a Formation Index greater than about 20, strength, such as geometric mean tensile strengths greater than about 700 g/3″ and high bulk, such as sheet bulks greater than about 10 cc/g. Unlike many prior art crosslinked fibers, the crosslinked softwood pulps of the present invention, which are preferably prepared using a glyoxal based crosslinking reagent, are readily dispersible in water and have relatively low degrees of kink and curl. As such, the fibers are well suited for forming wet-laid tissue products and more particularly wet-laid tissue products having improved physical properties, such as improved bulk.

公开(公告)号：US20180258589A1

公开(公告)日：2018-09-13

申请号：US15976654

申请日：2018-05-10

Applicant: International Paper Company

Inventor： Charles E. Miller

IPC: D21H11/20 ,  B01J19/24 ,  C08J3/24 ,  D21C9/00

CPC classification number: D21H11/20 ,  B01J19/2405 ,  B01J2219/24 ,  C08J3/24 ,  C08J3/246 ,  C08J2301/02 ,  C08J2333/02 ,  C08J2433/02 ,  D21C9/00 ,  D21C9/001 ,  D21C9/002 ,  D21C9/005

Abstract: Methods of forming crosslinked cellulose include mixing a crosslinking agent with an aqueous mixture of cellulose fibers containing little to no excess water (e.g., solids content of 25-55%), drying the resulting mixture to 85-100% solids, then curing the dried mixture to crosslink the cellulose fibers. Systems include a mixing unit to form, from an aqueous mixture of unbonded cellulose fibers having a solids content of about 25-55% and a crosslinking agent, a substantially homogenous mixture of non-crosslinked, unbonded cellulose fibers and crosslinking agent; a drying unit to dry the substantially homogenous mixture to a consistency of 85-100%; and a curing unit and to cure the crosslinking agent to form dried and cured crosslinked cellulose fibers. Intrafiber crosslinked cellulose pulp fibers produced by such methods and/or systems have a chemical on pulp level of about 2-14% and an AFAQ capacity of at least 12.0 g/g.

公开(公告)号：US09969816B2

公开(公告)日：2018-05-15

申请号：US14913513

申请日：2014-09-02

Applicant: UPM-KYMMENE CORPORATION

Inventor： Markus Nuopponen ,  Timo Paakkonen ,  Raili Ponni ,  Tapani Vuorinen

IPC: C08B1/08 ,  C08B15/04 ,  D21C9/02 ,  C08B15/02 ,  D21C9/00 ,  D21H11/18

CPC classification number: C08B15/04 ,  C08B1/08 ,  C08B15/02 ,  D21C9/004 ,  D21C9/005 ,  D21C9/02 ,  D21H11/18

Abstract: A method for catalytic oxidation of cellulose using a heterocyclic nitroxyl radical as catalyst and main oxidant acting as oxygen source comprises, before the catalytic oxidation of the cellulose, pretreatment of the cellulose—in an alkaline pretreatment step, where the cellulose is treated in alkaline solution having hydroxide concentration of above 0.3 M, and—in a washing step, where the cellulose treated in the alkaline solution is washed to lower the pH.

公开(公告)号：US09816230B2

公开(公告)日：2017-11-14

申请号：US14986578

申请日：2015-12-31

Applicant: Innovatech Engineering, LLC

Inventor： David Haldane ,  Joshua Kearney ,  Jesyca Turner ,  Raghuram Dhumpa

IPC: D21H11/18 ,  D21C9/00 ,  D21C9/18 ,  D21H17/34 ,  D21H17/55 ,  D21H25/00 ,  D21H17/52 ,  D21H21/18 ,  D04H1/4382 ,  D04H1/732

CPC classification number: D21C9/005 ,  D04H1/4382 ,  D04H1/732 ,  D21C9/18 ,  D21H11/18 ,  D21H17/34 ,  D21H17/52 ,  D21H17/55 ,  D21H21/18 ,  D21H25/005

Abstract: The present invention is a hydrated, nanocellulose nonwoven sheet and method for manufacturing the nanocellulose sheet having dermatologically active ingredients. The sheet is formed through a high pressure or vacuum filtration process from a dilute suspension. This suspension, which contains the nanocellulose, may also contain dermatologically active ingredients. The dermatologically active ingredients are incorporated into the unwoven sheet. The dilute suspension may contain binding agents that improve the strength of the nonwoven nanocellulose sheet. These binding agents can also be cross-linked after the formation of the sheet by applying other chemical agents or treating the sheet after formation.

公开(公告)号：US20170247839A1

公开(公告)日：2017-08-31

申请号：US15067749

申请日：2016-03-11

Applicant: WEYERHAEUSER NR COMPANY

Inventor： Mengkui Lou

IPC: D21H13/04

CPC classification number: D21C9/005 ,  C08B15/10 ,  C08H8/00 ,  D21C9/1063 ,  D21C9/147 ,  D21C9/18 ,  D21H13/04

Abstract: A pulp in accordance with a particular embodiment includes crosslinked cellulose fibers. The pulp can have high brightness, reactivity, and intrinsic viscosity. The pulp, therefore, can be well suited for use as a precursor in the production of low-color, high-viscosity cellulose derivatives. A method in accordance with a particular embodiment of the present technology includes forming a pulp from a cellulosic feedstock, bleaching the pulp, crosslinking cellulose fibers within the pulp while the pulp has a high consistency, and drying the pulp. The bleaching process can reduce a lignin content of the pulp to less than or equal to 0.09% by oven-dried weight of the crosslinked cellulose fibers. Crosslinking the cellulose fibers can include exposing the cellulose fibers to a glycidyl ether crosslinker having two or more glycidyl groups and a molecular weight per epoxide within a range from 140 to 175.

公开(公告)号：US09677053B2

公开(公告)日：2017-06-13

申请号：US15141467

申请日：2016-04-28

Applicant: BASF ENZYMES LLC ,  BASF SE

Inventor： Janne Samuli Kerovuo ,  Sylke Haremza ,  Oliver Koch ,  Tilo Habicher ,  Dan E. Robertson ,  Grace Desantis ,  Ryan McCann ,  Peter Luginbuhl

IPC: C12N9/02 ,  C12N15/00 ,  C12P21/06 ,  C12P21/04 ,  C07H21/04 ,  C12N15/09 ,  C12P5/00 ,  C12P7/00 ,  C12P19/00 ,  D21C9/10 ,  D21C9/00 ,  D21C5/00

CPC classification number: C12N9/0061 ,  C12N15/09 ,  C12P5/00 ,  C12P7/00 ,  C12P19/00 ,  C12Y110/03002 ,  D21C5/005 ,  D21C9/005 ,  D21C9/1063

Abstract: Provided herein are isolated laccase enzymes and nucleic acids encoding them. Also provided are mediators for laccase reactions. Also provided herein are methods for using laccases to oxidize lignins, other phenolic, and aromatic compounds, such as for bio-bleaching and decolorization of wood pulp under high temperature and pH conditions to facilitate a substantial reduction in use of bleaching chemicals, as well as for treatment of fibers.

公开(公告)号：US20170101605A1

公开(公告)日：2017-04-13

申请号：US15283456

申请日：2016-10-03

Applicant: Milliken & Company

Inventor： Sanjeev K. Dey ,  Gregory Scot Miracle

IPC: C11D3/42 ,  C09B69/10 ,  C11D3/40

CPC classification number: C11D3/42 ,  C09B67/0033 ,  C09B67/0034 ,  C09B67/0038 ,  C09B67/0041 ,  C09B67/0046 ,  C09B69/00 ,  C09B69/10 ,  C09B69/101 ,  C09B69/106 ,  C09B69/109 ,  C11D3/40 ,  D21C9/005 ,  D21H21/28 ,  D21H21/30

Abstract: The present application relates to novel whitening agents for cellulosic substrates. The whitening agents are comprised of at least two constituents: at least one chromophore constituent and at least one polymeric constituent. Suitable chromophore components generally fluoresce blue, red, violet, or purple color when exposed to light, or they may absorb light to reflect these same shades. This disclosure also relates to laundry care compositions including but not limited to liquid and/or powder laundry detergent formulations and rinse added fabric softening (RAFS) compositions that comprise such whitening agents.

公开(公告)号：US20170058459A1

公开(公告)日：2017-03-02

申请号：US14835931

申请日：2015-08-26

Applicant: Solenis Technologies, L.P.

Inventor： Qu-Ming Gu ,  Josette Huynh-Ba

IPC: D21H21/18 ,  D21H11/14 ,  D21H17/45 ,  D21H17/00

CPC classification number: D21H17/005 ,  D21C9/005 ,  D21C9/08 ,  D21D1/20 ,  D21H11/14 ,  D21H17/455 ,  D21H17/72 ,  D21H21/18

Abstract: Enzyme compositions comprising laccase, lipase, cationic polymer, and optionally laccase activator, for papermaking application are disclosed. It also relates to the use of the enzyme composition to improve dry strength property of a paper product made from lignocellulosic-containing materials before or after mechanical refining in a papermaking process.

Abstract translation: 公开了包含漆酶，脂肪酶，阳离子聚合物和任选的漆酶活化剂的用于造纸应用的酶组合物。 它还涉及在造纸过程中机械精炼之前或之后使用酶组合物来改善由含木素纤维素的材料制成的纸制品的干强度性能。

公开(公告)号：US20170036868A1

公开(公告)日：2017-02-09

申请号：US15298201

申请日：2016-10-19

Applicant: HUBEI JINHANJIANG REFINED COTTON CO., LTD.

Inventor： Jiagui ZHOU

IPC: B65G53/08 ,  B65G53/40

CPC classification number: B65G53/08 ,  B65G53/06 ,  B65G53/40 ,  D21C1/06 ,  D21C3/02 ,  D21C5/00 ,  D21C9/001 ,  D21C9/002 ,  D21C9/004 ,  D21C9/005 ,  D21C9/10 ,  D21C9/12 ,  D21C9/18

Abstract: A device for transporting a refined cotton pulp including: a blower, a material bin, valve plates, a central axis, a motor, and a transporting pipe. The material bin includes a mouth-like upper part and a lower part including a first material outlet. A first material outlet is disposed at the lower part of the material bin and communicates with the transporting pipe. One end of the transporting pipe communicates with the blower, and the other end of the transporting pipe functions as a second material outlet. The valve plates are disposed in the material bin via the central axis. The motor is in transmission connection to the central axis.

Abstract translation: 一种用于输送精制棉浆的装置，包括鼓风机，料仓，阀板，中心轴，马达和输送管。 料仓包括一个口状的上部和一个包括第一材料出口的下部。 第一材料出口设置在料仓的下部并与输送管连通。 输送管的一端与鼓风机连通，输送管的另一端作为第二材料出口。 阀板通过中心轴线设置在料仓中。 电机与中心轴传动连接。