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公开(公告)号：US11661704B2
公开(公告)日：2023-05-30
申请号：US17388006
申请日：2021-07-29
申请人： GP CELLULOSE GMBH
发明人： 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
CPC分类号： D21H11/04 , D21C1/02 , D21C1/04 , D21C3/02 , D21C3/022 , D21C9/02 , D21C9/1036 , D21C9/1057 , D21C9/1084 , D21C9/14 , D21C9/163
摘要： 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.
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公开(公告)号：US11359308B2
公开(公告)日：2022-06-14
申请号：US16945010
申请日：2020-07-31
申请人： GP Cellulose GMBH
摘要： 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.
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公开(公告)号：US11111628B2
公开(公告)日：2021-09-07
申请号：US16933167
申请日：2020-07-20
申请人： GP Cellulose GmbH
摘要： 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.
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公开(公告)号：US11105042B2
公开(公告)日：2021-08-31
申请号：US16284632
申请日：2019-02-25
申请人： GP CELLULOSE GMBH
发明人： 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
摘要： 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.
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公开(公告)号：US10995155B2
公开(公告)日：2021-05-04
申请号：US15768035
申请日：2016-10-14
申请人： GP Cellulose GmbH
发明人： Arthur J. Nonni , Charles E. Courchene , Christopher M. Slone , Blair R. Carter , Anna L. Wells , James M. Keough
摘要： 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.
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公开(公告)号：US20190382509A1
公开(公告)日：2019-12-19
申请号：US15780324
申请日：2016-11-30
申请人： GP Cellulose GmbH
摘要： 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.
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公开(公告)号：US10294614B2
公开(公告)日：2019-05-21
申请号：US15125276
申请日：2015-03-09
申请人： GP Cellulose GmbH
IPC分类号： D21C9/16 , D21C9/14 , C08B15/04 , B01J20/24 , C08B15/00 , D21C9/00 , D21C9/147 , D21H11/20 , D21C3/02
摘要： 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.
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公开(公告)号：US20190024308A1
公开(公告)日：2019-01-24
申请号：US16130211
申请日：2018-09-13
申请人： GP Cellulose GmbH
摘要： 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.
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公开(公告)号：US10174455B2
公开(公告)日：2019-01-08
申请号：US14776589
申请日：2014-03-12
申请人： GP CELLULOSE GMBH
IPC分类号： D21C9/16 , C08B15/00 , C08B15/04 , D21C9/14 , D21H11/20 , B01J20/24 , D21C9/00 , D21C9/147 , D21C3/02
摘要： 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.
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公开(公告)号：US10151064B2
公开(公告)日：2018-12-11
申请号：US14766316
申请日：2014-02-06
申请人： GP CELLULOSE GMBH
发明人： Arthur J. Nonni , Charles E. Courchene , Philip Reed Campbell , Steven Chad Dowdle , Joel Mark Engle , Blair Roderick Carter , Christopher M. Slone
摘要： A bleached softwood kraft pulp fiber with high α-cellulose content and a low CED viscosity is provided, A surfactant treated fiber useful in the production of chemical derivatives is also described. Methods for making the kraft pulp fiber and products made from it are also described.
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