公开(公告)号：US10287383B2

公开(公告)日：2019-05-14

申请号：US15355697

申请日：2016-11-18

Applicant: INTERNATIONAL PAPER COMPANY

Inventor： Karen Brogan ,  Charles E. Miller ,  Angel Stoyanov ,  Torsten Lindner ,  Maike Siemons

IPC: C08F251/02 ,  B01J20/24 ,  C08B3/08 ,  C08B15/00 ,  D21H27/00 ,  D21H11/16 ,  D21H11/20 ,  D21H17/37 ,  D01F11/02 ,  B01J20/26 ,  B01J20/28 ,  D01F2/00

Abstract: Grafted, crosslinked cellulosic materials include cellulose fibers and polymer chains composed of at least one monoethylenically unsaturated acid group-containing monomer (such as acrylic acid) grafted thereto, in which one or more of said cellulose fibers and said polymer chains are crosslinked (such as by intra-fiber chain-to-chain crosslinks). Some of such materials are characterized by a wet bulk of about 10.0-17.0 cm3/g, an IPRP value of about 1000 to 7700 cm2/MPa·sec, and/or a MAP value of about 7.0 to 38 cm H2O. Methods for producing such materials may include grafting polymer chains from a cellulosic substrate, followed by treating the grafted material with a crosslinking agent adapted to effect crosslinking of one or more of the cellulosic substrate or the polymer chains. Example crosslinking mechanisms include esterfication reactions, ionic reactions, and radical reactions, and example crosslinking agents include pentaerythritol, homopolymers of the graft species monomer, and hyperbranched polymers.

公开(公告)号：US10280559B2

公开(公告)日：2019-05-07

申请号：US15793239

申请日：2017-10-25

Applicant: International Paper Company

Inventor： Gopal Goyal

IPC: D21C3/12 ,  D21C9/10 ,  D21C9/14 ,  D21C9/16 ,  D21H19/38 ,  D21H19/40 ,  D21H19/48 ,  D21H21/14 ,  D21C3/06 ,  D21C9/00 ,  D21H11/06

Abstract: Processes for pulping raw pulp material, such as wood chips, to provide pulp fibers having increased bulk, as well as bleaching the resulting pulp fibers to provide bleached pulp fibers having increased bulk. These pulp fibers and bleached pulp fibers may be incorporated into or used various products, such as multi-ply coated paperboards, fluff pulp, etc.

公开(公告)号：US20190084185A1

公开(公告)日：2019-03-21

申请号：US16192415

申请日：2018-11-15

Applicant: International Paper Company

Inventor： Robert T. Hamilton ,  Harshadkumar M. Shah ,  David E. Fish ,  Neil R. Granlund ,  Jeffrey J. Cernohous

IPC: B29B9/06 ,  B29C47/36 ,  B29B9/14 ,  B29C47/00 ,  B29B7/92 ,  B29C47/38 ,  B29B7/48 ,  B29B7/60

Abstract: A composition including 6 to 50 weight percent wood pulp fiber and 45 to 93.45 weight percent thermoplastic polymer. In some embodiments, the average dispersion of the wood pulp fibers within the thermoplastic polymer is equal to or greater than 90% as determined by the Dispersion Test. In some embodiments, the dilution level for detection in a bag at 40° C. is equal to or less than 450 as determined by ASTM E679. In some embodiments, the composition further includes 0.5 to 5 weight percent of an additive, such as a compatibilizer, a coupling agent, an anti-oxidant, and/or a lubricant. In some embodiments, the wood pulp fiber is bleached chemical wood pulp fiber.

公开(公告)号：US20190021521A1

公开(公告)日：2019-01-24

申请号：US16005914

申请日：2018-06-12

Applicant: INTERNATIONAL PAPER COMPANY

Inventor： Gregory James Kula

IPC: A47F5/10 ,  A47B57/40 ,  A47F5/00 ,  A47B57/06 ,  A47B43/00 ,  A47B57/16

Abstract: A floor display system comprising a base portion including a front wall having opposing first and second vertical edges, and first and second side walls extending from the vertical edges in generally perpendicular relation to the front wall. At least one side wall slot is formed in each of the first and second side walls and connected to respective front wall slot portions formed in the front wall. At least one tray is provided including a tray body connected to at least one mounting flap portion positioned in each of the side wall slots in the first and second side walls and extending into the corresponding front wall slot portions for supporting the tray body to the base portion.

公开(公告)号：US20180363245A1

公开(公告)日：2018-12-20

申请号：US16112559

申请日：2018-08-24

Applicant: International Paper Company

Inventor： Mengkui Luo

IPC: D21H11/04 ,  D21H11/14 ,  D21H13/04 ,  D21C9/18 ,  D21C9/147 ,  D21C9/00 ,  C08L97/02

Abstract: Pulps in accordance with certain embodiments include crosslinked cellulose fibers and have high brightness, reactivity, and intrinsic viscosity, and 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 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. Crosslinking the cellulose fibers can include exposing the 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. Another method in accordance with the present technology includes providing an aqueous suspension of pulp that includes chemical wood pulp fibers that were previously bleached and dried, crosslinking the fibers with such a glycidal ether crosslinker, and drying the pulp.

公开(公告)号：US20180274172A1

公开(公告)日：2018-09-27

申请号：US15918725

申请日：2018-03-12

Applicant: INTERNATIONAL PAPER COMPANY

Inventor： PETER M. FROASS

IPC: D21H11/04 ,  D21C9/16 ,  D21C9/10

CPC classification number: D21H11/04 ,  D21C9/00 ,  D21C9/001 ,  D21C9/004 ,  D21C9/1036 ,  D21C9/14 ,  D21C9/16 ,  D21C9/163 ,  D21C11/08 ,  D21H11/20 ,  D21H21/14 ,  D21H21/32

Abstract: The present technology is directed to fluff pulps with improved odor control as well as methods of making such fluff pulps. A fluff pulp is provided that includes a bleached kraft fiber and a copper ion content from about 0.2 ppm to about 50 ppm by weight of the bleached kraft fiber. The bleached kraft fiber includes a length-weighted average fiber length of at least about 2 mm, a copper number of less than about 7, a carboxyl content of more than about 3.5 meq/100 grams; an ISO brightness of at least 80; and a viscosity from about 2 cps to about 9 cps.

公开(公告)号：US10072228B2

公开(公告)日：2018-09-11

申请号：US13868964

申请日：2013-04-23

Applicant: INTERNATIONAL PAPER COMPANY

Inventor： Johnway Gao ,  Amar N. Neogi

IPC: C12P19/00 ,  C07G1/00 ,  C10L5/44 ,  C10L1/02 ,  C10L5/36 ,  C12P19/02 ,  C12P19/14 ,  C12P7/10 ,  C12P7/56 ,  C13K1/02 ,  C08H8/00 ,  C08L97/00

CPC classification number: C10L5/44 ,  C07G1/00 ,  C08H8/00 ,  C08L97/005 ,  C10L1/02 ,  C10L1/023 ,  C10L1/026 ,  C10L5/363 ,  C10L5/442 ,  C12P7/10 ,  C12P7/56 ,  C12P19/02 ,  C12P19/14 ,  C13K1/02 ,  Y02E50/10 ,  Y02E50/13 ,  Y02E50/16 ,  Y02E50/30

Abstract: Methods of producing clean (e.g., low sulfur and metal ion content, and free of fermentation inhibitors) sugar and lignin-rich streams, and downstream conversion products, from lignocellulosic biomass, may include obtaining non-chemically pretreated, milled lignocellulosic biomass, reacting the milled lignocellulosic biomass with an enzymatic agent to produce a slurry that includes converted monomeric lignocellulosic sugars and lignin-rich residuals, and separating the slurry into a sugar stream that includes the converted monomeric lignocellulosic sugars and a lignin-rich stream that includes the lignin-rich residuals. The sugar stream, not including water, includes at least 75% monomeric lignocellulosic sugar, less than 0.20% sulfur, and less than 3.0% metal ion content, and the lignin-rich stream includes at least 35% lignin and less than 0.50% sulfur. Some methods include producing fermentation products such as alcohols and/or organic acids from the sugar stream, and/or use of the lignin residuals in fuels.

公开(公告)号：US10017800B2

公开(公告)日：2018-07-10

申请号：US13868970

申请日：2013-04-23

Applicant: INTERNATIONAL PAPER COMPANY

Inventor： Johnway Gao ,  Amar N. Neogi

IPC: C12P19/00 ,  C08B1/00 ,  C08L97/00 ,  C12P19/02

CPC classification number: C12P19/00 ,  C08B1/00 ,  C08L97/005 ,  C12P19/02

Abstract: Methods of producing clean (e.g., low sulfur and metal ion content, and free of fermentation inhibitors) sugar and lignin-rich streams, and downstream conversion products, from lignocellulosic biomass, may include obtaining non-chemically pretreated, milled lignocellulosic biomass, reacting the milled lignocellulosic biomass with an enzymatic agent to produce a slurry that includes converted monomeric lignocellulosic sugars and lignin-rich residuals, and separating the slurry into a sugar stream that includes the converted monomeric lignocellulosic sugars and a lignin-rich stream that includes the lignin-rich residuals. The sugar stream, not including water, includes at least 75% monomeric lignocellulosic sugar, less than 0.20% sulfur, and less than 3.0% metal ion content, and the lignin-rich stream includes at least 35% lignin and less than 0.50% sulfur. Some methods include producing fermentation products such as alcohols and/or organic acids from the sugar stream, and/or use of the lignin residuals in fuels.

公开(公告)号：US09995000B2

公开(公告)日：2018-06-12

申请号：US15253450

申请日：2016-08-31

Applicant: International Paper Company

Inventor： Charles E. Miller

IPC: D21H11/20 ,  C08J3/24 ,  B01J19/24 ,  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：US09981288B2

公开(公告)日：2018-05-29

申请号：US14993126

申请日：2016-01-12

Applicant: INTERNATIONAL PAPER COMPANY

Inventor： Jay C. Song ,  Sen Yang ,  Michelle X. Wang ,  Pat Morabito

IPC: B05D7/00 ,  B41M5/52 ,  B05D1/36 ,  B05D7/04 ,  C09D125/14 ,  C09J123/08 ,  C08K3/34 ,  C08K5/098 ,  C09D11/107 ,  C09D11/322 ,  G03G9/09 ,  B41M5/50 ,  C09D133/02 ,  C09D147/00 ,  C08L3/02 ,  C08L23/08 ,  C08L29/04 ,  C08L53/02

CPC classification number: B05D7/5483 ,  B05D1/36 ,  B05D7/04 ,  B05D2201/02 ,  B05D2203/22 ,  B41M5/508 ,  B41M5/52 ,  B41M5/5218 ,  B41M5/5227 ,  B41M5/5254 ,  B41M5/5263 ,  B41M2205/42 ,  C08K3/013 ,  C08K3/346 ,  C08K5/098 ,  C08L3/02 ,  C08L23/0869 ,  C08L29/04 ,  C08L53/02 ,  C08L2666/02 ,  C09D7/61 ,  C09D11/107 ,  C09D11/322 ,  C09D125/14 ,  C09D133/02 ,  C09D147/00 ,  C09J123/0869 ,  G03G9/0902 ,  Y10T428/24942 ,  Y10T428/273

Abstract: A method for making a recording sheet is provided, the recording sheet comprising a sizing or coating composition, which comprises a first binder resin, which is compatible with dry toner binder resin; a second binder resin, which is compatible with liquid toner binder resin; a first pigment, which has a BET surface area of from greater than zero to about 35 m2/g or greater; a second pigment, which has a BET surface area of from greater than zero to about 35 m2/g or greater, and which is different from the first pigment; and a paper or plastic substrate in contact with the composition, wherein the sizing or coating composition is comprised within first and second sublayers, and said method for making the recording sheet comprising contacting, in any order: the first binder resin; the second binder resin; the first pigment; the second pigment; or a mixture thereof, and the paper or plastic substrate, to produce the recording sheet.