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：US11591429B2

公开(公告)日：2023-02-28

申请号：US17241421

申请日：2021-04-27

Applicant: INTERNATIONAL PAPER COMPANY

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

IPC: C08F251/02 ,  C08B3/08 ,  C08B15/00 ,  D21H27/00 ,  D21H11/16 ,  D21H11/20 ,  D21H17/37 ,  D01F11/02 ,  D21C9/00 ,  D21H21/22 ,  B01J20/24 ,  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：US20210246247A1

公开(公告)日：2021-08-12

申请号：US17241421

申请日：2021-04-27

Applicant: INTERNATIONAL PAPER COMPANY

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

IPC: C08F251/02 ,  C08B3/08 ,  C08B15/00 ,  D21H27/00 ,  D21H11/16 ,  D21H11/20 ,  D21H17/37 ,  D01F11/02 ,  D21C9/00 ,  D21H21/22 ,  B01J20/24 ,  B01J20/26 ,  B01J20/28

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：US20230212341A1

公开(公告)日：2023-07-06

申请号：US18174747

申请日：2023-02-27

Applicant: INTERNATIONAL PAPER COMPANY

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

IPC: C08F251/02 ,  B01J20/24 ,  D21H17/37 ,  C08B15/00 ,  D21C9/00 ,  D01F11/02 ,  B01J20/26 ,  B01J20/28 ,  C08B3/08 ,  D21H11/20 ,  D21H21/22 ,  D21H27/00 ,  D21H11/16 ,  D01F2/00

CPC classification number: C08F251/02 ,  B01J20/24 ,  B01J20/265 ,  B01J20/267 ,  B01J20/28023 ,  C08B3/08 ,  C08B15/005 ,  D01F11/02 ,  D21C9/005 ,  D21H11/16 ,  D21H11/20 ,  D21H17/37 ,  D21H21/22 ,  D21H27/002 ,  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：US20200087435A1

公开(公告)日：2020-03-19

申请号：US16549903

申请日：2019-08-23

Applicant: INTERNATIONAL PAPER COMPANY

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

IPC: C08F251/02 ,  B01J20/28 ,  B01J20/26 ,  B01J20/24 ,  D01F11/02 ,  D21H17/37 ,  D21H11/20 ,  D21H11/16 ,  D21H27/00 ,  C08B15/00 ,  C08B3/08 ,  D21H21/22 ,  D21C9/00

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.