Abstract: This disclosure relates to improved packaging materials containing oxidized cellulose. More particularly, this disclosure relates to improved packaging materials containing oxidized cellulose exhibiting one or more of improved odor control and/or improved antimicrobial properties. This disclosure further relates to the use of oxidized cellulose in packaging materials as an anti-counterfeiting agent, and methods of testing for the same.
Abstract: This disclosure relates to methods of making novel dissolving wood pulps by processes comprising acid prehydrolysis, pulping, and a multi-stage bleaching process comprising oxidation with a catalyst and peroxide under acidic conditions, as well as to products made therefrom having a combination of medium-purity, low viscosity, and improved reactivity, filterability, and/or clogging that can be used as a substitute for traditional high-purity dissolving pulps in a wide variety of applications.
Type:
Grant
Filed:
July 29, 2021
Date of Patent:
May 30, 2023
Assignee:
GP Cellulose GmbH
Inventors:
Arthur James Nonni, Charles E. Courchene, Harry R. Bartges, James M. Keough, William A. Howell, Jeremy M. Carter, Blair R. Carter, Christopher M. Slone, Philip A. Powers, Steven T. Haywood
Abstract: High permeability curly fibers with enhanced fiber strength are produced by mercerizing cellulosic fibers. The fibers have relatively high values for curl, kink level, wet tensile strength, and bulk density when compared with current fibers. The disclosed fibers can be used in a wide range of applications including paper products such as filters.
Type:
Grant
Filed:
July 31, 2020
Date of Patent:
June 14, 2022
Assignee:
GP CELLULOSE GMBH
Inventors:
Alan Jeffrey Campbell, Sonja McNeil Fields, Danny R. Moore, Stephen Skirius
Abstract: A modified kraft pulp fiber with unique properties is provided. The modified fiber can be a modified bleached kraft fiber that is almost indistinguishable from its conventional counterpart, except that it has a low degree of polymerization (DP). Methods for making the modified fiber and products made from it are also provided. The method can be a one step acidic, iron catalyzed peroxide treatment process that can be incorporated into a single stage of a multi-stage bleaching process. The products can be chemical cellulose feedstocks, microcrystalline cellulose feedstocks, fluff pulps and products made from them.
Type:
Grant
Filed:
July 20, 2020
Date of Patent:
September 7, 2021
Assignee:
GP Cellulose GmbH
Inventors:
Arthur J. Nonni, Charles E. Courchene, Christopher Michael Slone, Peter R. Abitz
Abstract: This disclosure relates to methods of making novel dissolving wood pulps by processes comprising acid prehydrolysis, pulping, and a multi-stage bleaching process comprising oxidation with a catalyst and peroxide under acidic conditions, as well as to products made therefrom having a combination of medium-purity, low viscosity, and improved reactivity, filterability, and/or clogging that can be used as a substitute for traditional high-purity dissolving pulps in a wide variety of applications.
Type:
Grant
Filed:
February 25, 2019
Date of Patent:
August 31, 2021
Assignee:
GP Cellulose GMBH
Inventors:
Arthur J. Nonni, Charles E. Courchene, Harry R. Bartges, James M. Keough, William A. Howell, Jeremy M. Carter, Blair R. Carter, Christopher M. Slone, Philip A. Powers, Steven T. Haywood
Abstract: The present disclosure provides a composite of (a) oxidized cellulose comprising at least one carboxyl and (b) at least one component selected from a diamine, a diol, or mixture thereof. This disclosure further relates to methods of making such composite materials and suitable uses thereof, including in fibers, fabrics, textiles, films, fillers, packaging materials, plastics, etc.
Type:
Grant
Filed:
October 14, 2016
Date of Patent:
May 4, 2021
Assignee:
GP CELLULOSE GMBH
Inventors:
Arthur J. Nonni, Charles E. Courchene, Christopher M. Slone, Blair R. Carter, Anna L. Wells, James M. Keough
Abstract: A bleached softwood kraft pulp fiber with high alpha cellulose content and improved anti-yellowing is provided. Methods for making the kraft pulp fiber and products made from it are also described.
Type:
Grant
Filed:
February 18, 2020
Date of Patent:
May 4, 2021
Assignee:
GP CELLULOSE GMBH
Inventors:
Arthur J. Nonni, Charles E. Courchene, Phillip R. Campbell, Steven C. Dowdle, Joel M. Engle
Abstract: This disclosure relates to improved packaging materials containing oxidized cellulose. More particularly, this disclosure relates to improved packaging materials containing oxidized cellulose exhibiting one or more of improved odor control and/or improved antimicrobial properties. This disclosure further relates to the use of oxidized cellulose in packaging materials as an anti-counterfeiting agent, and methods of testing for the same.
Type:
Application
Filed:
December 21, 2020
Publication date:
April 15, 2021
Applicant:
GP Cellulose GmbH
Inventors:
Charles E. Courchene, Ernest R. Fish, Arthur J. Nonni, Mechelli R. Campbell
Abstract: The present disclosure generally relates to open chain modified cellulosic pulps and methods for making and using the same. More specifically, the open chain modified cellulosic pulps described herein may be made by oxidation of a cellulosic pulp, followed by reduction of the oxidized groups, resulting in a modified pulp having an improved open chain configuration that may be more efficiently converted into cellulosic derivative products. This disclosure further relates to improved cellulosic derivative products made therefrom, for example, cellulose esters, cellulose ethers, and regenerated cellulose products.
Type:
Grant
Filed:
November 30, 2016
Date of Patent:
January 26, 2021
Assignee:
GP Cellulose GMBH
Inventors:
Arthur J. Nonni, James M. Keough, Charles E. Courchene, Harry R. Bartges, Blair R. Carter
Abstract: This disclosure relates to improved packaging materials containing oxidized cellulose. More particularly, this disclosure relates to improved packaging materials containing oxidized cellulose exhibiting one or more of improved odor control and/or improved antimicrobial properties. This disclosure further relates to the use of oxidized cellulose in packaging materials as an anti-counterfeiting agent, and methods of testing for the same.
Type:
Grant
Filed:
May 25, 2017
Date of Patent:
January 26, 2021
Assignee:
GP CELLULOSE GMBH
Inventors:
Charles E. Courchene, Ernest R. Fish, Arthur J. Nonni, Mechelli R. Campbell
Abstract: This disclosure relates to improved products containing oxidized cellulose. This disclosure further relates to improved methods of making oxidized cellulose in multi-stage bleaching processes, including, for example, in four-stage and three-stage bleaching processes. This disclosure further relates to products made therefrom, including wipe, tissue, towel, and napkin products.
Abstract: High permeability curly fibers with enhanced fiber strength are produced by mercerizing cellulosic fibers. The fibers have relatively high values for curl, kink level, wet tensile strength, and bulk density when compared with current fibers. The disclosed fibers can be used in a wide range of applications including paper products such as filters.
Type:
Grant
Filed:
March 14, 2014
Date of Patent:
September 8, 2020
Assignee:
GP CELLULOSE GMBH
Inventors:
Alan Jeffrey Campbell, Sonja McNeil Fields, Danny R. Moore, Stephen Skirius
Abstract: A pulp fiber with an enhanced carboxyl content resulting in improved antimicrobial, anti-yellowing and absorptive properties. Methods for making the kraft pulp fiber and products made from it are also described.
Type:
Grant
Filed:
January 4, 2019
Date of Patent:
August 25, 2020
Assignee:
GP CELLULOSE GMBH
Inventors:
Arthur J. Nonni, Charles E. Courchene, Blair Roderick Carter
Abstract: A modified kraft pulp fiber with unique properties is provided. The modified fiber can be a modified bleached kraft fiber that is almost indistinguishable from its conventional counterpart, except that it has a low degree of polymerization (DP). Methods for making the modified fiber and products made from it are also provided. The method can be a one step acidic, iron catalyzed peroxide treatment process that can be incorporated into a single stage of a multi-stage bleaching process. The products can be chemical cellulose feedstocks, microcrystalline cellulose feedstocks, fluff pulps and products made from them.
Type:
Grant
Filed:
September 13, 2018
Date of Patent:
August 4, 2020
Assignee:
GP Cellulose GmbH
Inventors:
Arthur J. Nonni, Charles E. Courchene, Christopher Michael Slone, Peter R. Abitz
Abstract: A bleached softwood kraft pulp fiber with high alpha cellulose content and improved anti-yellowing is provided. Methods for making the kraft pulp fiber and products made from it are also described.
Type:
Application
Filed:
February 18, 2020
Publication date:
June 11, 2020
Applicant:
GP Cellulose GmbH
Inventors:
Arthur J. Nonni, Charles E. Courchene, Phillip R. Campbell, Steven C. Dowdle, Joel M. Engle
Abstract: A bleached softwood kraft pulp fiber with high alpha cellulose content and improved anti-yellowing is provided. Methods for making the kraft pulp fiber and products made from it are also described.
Type:
Grant
Filed:
May 18, 2018
Date of Patent:
March 24, 2020
Assignee:
GP Cellulose GmbH
Inventors:
Arthur J. Nonni, Charles E. Courchene, Phillip R. Campbell, Steven C. Dowdle, Joel M. Engle
Abstract: A pulp fiber with an enhanced carboxyl content resulting in improved antimicrobial, anti-yellowing and absorptive properties is described. Methods for making the kraft pulp fiber and products made from it are also described.
Type:
Grant
Filed:
March 16, 2018
Date of Patent:
February 4, 2020
Assignee:
GP Cellulose GmbH
Inventors:
Arthur J. Nonni, Charles E. Courchene, Blair R. Carter
Abstract: The present disclosure generally relates to open chain modified cellulosic pulps and methods for making and using the same. More specifically, the open chain modified cellulosic pulps described herein may be made by oxidation of a cellulosic pulp, followed by reduction of the oxidized groups, resulting in a modified pulp having an improved open chain configuration that may be more efficiently converted into cellulosic derivative products. This disclosure further relates to improved cellulosic derivative products made therefrom, for example, cellulose esters, cellulose ethers, and regenerated cellulose products.
Type:
Application
Filed:
November 30, 2016
Publication date:
December 19, 2019
Applicant:
GP Cellulose GmbH
Inventors:
Arthur J. Nonni, James M. Keough, Charles E. Courchene, Harry R. Bartges, Blair R. Carter
Abstract: A surfactant treated bleached softwood kraft pulp fiber, useful as a starting material in the production of cellulose derivatives including cellulose ether, cellulose esters and viscose, is disclosed. Methods for making the kraft pulp fiber and products made from it are also described.
Type:
Grant
Filed:
March 29, 2017
Date of Patent:
September 10, 2019
Assignee:
GP Cellulose GmbH
Inventors:
Arthur J. Nonni, Charles E. Courchene, Christopher M. Slone, Philip R. Campbell, Steven C. Dowdle, Joel M. Engle
Abstract: A modified kraft pulp fiber with unique properties is provided. The modified fiber can be a modified bleached kraft fiber that is almost indistinguishable from its conventional counterpart, except that it has a low degree of polymerization (DP). Methods for making the modified fiber and products made from it are also provided. The method can be a one step acidic, iron catalyzed peroxide treatment process that can be incorporated into a single stage of a multi-stage bleaching process. The products can be chemical cellulose feedstocks, microcrystalline cellulose feedstocks, fluff pulps and products made from them.
Type:
Grant
Filed:
August 30, 2021
Date of Patent:
July 4, 2023
Assignee:
GP Cellulose GmbH
Inventors:
Arthur J. Nonni, Charles E. Courchene, Christopher Michael Slone, Peter R. Abitz