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    Bleaching and brightness stabilization of lignocellulosic materials with water-soluble phosphines or phosphonium compounds
    1.
    发明授权
    Bleaching and brightness stabilization of lignocellulosic materials with water-soluble phosphines or phosphonium compounds 失效
    用水溶性膦或鏻化合物漂白和稳定木质纤维素材料

    公开(公告)号：US07285181B2

    公开(公告)日：2007-10-23

    申请号：US10770474

    申请日：2004-02-04

    Applicant: Thomas Qiuxiong Hu ,  Brian R. James ,  Dominggus Yawalata ,  Maria B. Ezhova

    Inventor： Thomas Qiuxiong Hu ,  Brian R. James ,  Dominggus Yawalata ,  Maria B. Ezhova

    IPC: D12H17/10 ,  D12H21/32 ,  D12H21/38

    CPC classification number: D21C9/1084 ,  D21C9/1047 ,  D21H21/32

    Abstract: A method for the bleaching and brightness stabilization of lignocellulosic materials is described. The method involves the treatment of lignocellulosic materials, in particular, (a) wood pulps such as thermomechanical pulps (TMP) and chemithermomechanical pulps (CTMP), and (b) papers made from wood pulps, with a water-soluble phosphine or a phosphonium compound preferably containing at least one phosphorus hydroxyalkyl bond/linkage, for example a phosphorus hydroxymethyl bond/linkage (P—CH2OH). One example of such a water-soluble phosphine is the commercially available, tris(hydroxymethyl)phosphine (THP), P(CH2OH)3. One example of such a phosphonium compound is the commercially available, tetrakis(hydroxymethyl)phosphonium chloride (THPC), [P(CH2OH)4]Cl.

    Abstract translation: 描述了用于木质纤维素材料的漂白和亮度稳定的方法。 该方法涉及木质纤维素材料的处理，特别是（a）木浆如热机械纸浆（TMP）和机械剪切纸浆（CTMP），和（b）由木浆制成的纸，其中含有水溶性膦或鏻 优选含有至少一个磷羟烷基键/键的化合物，例如磷羟甲基键/键（P-CH 2 OH）。 这种水溶性膦的一个实例是市售的三（羟甲基）膦（THP），P（CH 2 OH）3 3。 这种鏻化合物的一个实例是市售的氯化四（羟甲基）鏻（THPC），[P（CH 2 CH 2）4 Cl] Cl。

    Pulp refining process and additive therefor
    3.
    发明授权
    Pulp refining process and additive therefor 失效
    纸浆精炼工艺及其添加剂

    公开(公告)号：US4383889A

    公开(公告)日：1983-05-17

    申请号：US300110

    申请日：1981-09-08

    Applicant: James A. Hyde ,  Michael D. Breslin ,  David R. Cosper ,  Roy I. Kaplan

    Inventor： James A. Hyde ,  Michael D. Breslin ,  David R. Cosper ,  Roy I. Kaplan

    IPC: D21B1/16 ,  D21C9/10 ,  D21C9/00

    CPC classification number: D21C9/1047 ,  D21B1/16

    Abstract: The present invention provdes an additive for reducing brightness loss upon pulp refining comprising in combination at least one anionic polymeric compound and at least one inorganic polymer, preferably such combinations wherein any of such anionic polymeric compounds are of low molecular weight. The preferred inorganic polyphosphates of such combination are those having average polymerization numbers of from about 10 to about 45. The weight proportion of inorganic polyphos-hate to anionic polymeric compound in such combination can be within the range of about 1:10::10:1.The present invention also provides pulp refining processes wherein such additive is added at a sufficient amount to the pulp material being refined to reduce brightness loss, such as at dosages of from about 0.0025 to about 0.5 weight percent additive actives to dry pulp, and end product pulps produced by such processes.

    Abstract translation: 本发明提供了用于降低纸浆精炼时的亮度损失的添加剂，其包括组合至少一种阴离子聚合化合物和至少一种无机聚合物，优选这样的组合，其中任何这种阴离子聚合物具有低分子量。 这种组合的优选的无机多磷酸盐是具有约10至约45的平均聚合数的那些。这种组合中无机聚磷酸酯与阴离子聚合物的重量比例可以在约1:10:10:10的范围内。 1。 本发明还提供纸浆精制方法，其中将这种添加剂以足够的量添加到被精炼的纸浆材料中以减少亮度损失，例如以约0.0025至约0.5重量％的添加剂活性物质的剂量至干燥纸浆，以及最终产品 通过这种方法生产的纸浆。

    Light-stable and process-stable lignocellulosic materials and their production
    5.
    发明授权
    Light-stable and process-stable lignocellulosic materials and their production 失效
    光稳定和工艺稳定的木质纤维素材料及其生产

    公开(公告)号：US07384504B2

    公开(公告)日：2008-06-10

    申请号：US10532138

    申请日：2003-10-21

    Applicant: Thomas Q. Hu ,  Ivan I Pikulik ,  Trevor Williams

    Inventor： Thomas Q. Hu ,  Ivan I Pikulik ,  Trevor Williams

    IPC: D21C3/20

    CPC classification number: C08H8/00 ,  C08G73/00 ,  C08G73/02 ,  C08G73/0226 ,  D21C9/10 ,  D21C9/1047 ,  D21C9/16 ,  D21C9/163

    Abstract: A novel method for the production of light-stable and process-stable lignocellulosic materials, in particular, the production of mechanical wood pulps with much improved light and process stability is described, as well as the resulting pulps of improved light and process stability and papers containing such pulps. The novel method involves the reaction of lignocellulosic materials such as bleached chemithermomechanical pulps (BCTMP) with (a) a water-soluble, fibre-reactive yellowing inhibitor possessing two or more secondary amino or ammonium (—NHR′ or —HN+HR′), tertiary amino or ammonium (—NR′R″ or —HN+R′R″), and/or quaternary ammonium (—N+R′R″R′″) functional groups in an aqueous medium, or (b) a water-soluble, fibre-reactive hindered amine light stabilizer possessing said amino or ammonium functional groups in an alkaline peroxide bleaching medium or in an aqueous medium with a subsequent bleaching of the materials in an alkaline peroxide bleaching medium. Examples of the water-soluble, fibre-reactive yellowing inhibitors are the novel, N-(2,2,6,6-tetramethyl-1-oxyl-piperidin-4-yl)-N′-{2-[2-(2,2,6,6-tetramethyl-1-oxyl-piperidin-4-ylamino)-ethylamino]-ethyl}-ethane-1,2-diamine (abbreviated as TETA-2TEMPO) and its hydroxylamine hydrochloride derivative, N-(2,2,6,6-tetramethyl-1-hydroxyl-piperidin-4-yl)-N′-{2-[2-(2,2,6,6-tetramethyl-1-hydroxyl-piperidin-4-ylamino)-ethylamino]-ethyl}-ethane-1,2-diamine hexahydrochloride (abbreviated as TETA-2TEMPOH-6HCl).

    Abstract translation: 描述了一种用于生产光稳定和工艺稳定的木质纤维素材料的新方法，特别是生产具有大大提高的光和工艺稳定性的机械木浆，以及由此产生的改进的光和工艺稳定性和纸张的纸浆 含有这种纸浆。 该新方法涉及木质纤维素材料如漂白的机械机械纸浆（BCTMP）与（a）具有两个或多个仲氨基或铵（-NHR'或-HN +）的水溶性纤维反应性黄变抑制剂的反应， H'，叔氨基或铵（-NR'R“或-HN”R“R”）和/或季铵（-NO + 或（b）在碱性过氧化物漂白介质中具有所述氨基或铵官能团的水溶性纤维反应性受阻胺光稳定剂，或（b）在碱性过氧化物漂白介质中具有所述氨基或铵官能团的水溶性纤维反应性受阻胺光稳定剂，或 在水性介质中，随后在碱性过氧化物漂白介质中漂白材料。 水溶性纤维反应性黄变抑制剂的实例是新型N-（2,2,6,6-四甲基-1-氧基 - 哌啶-4-基）-N' - {2- [2-（ 2,2,6,6-四甲基-1-氧基 - 哌啶-4-基氨基） - 乙基氨基] - 乙基} - 乙烷-1,2-二胺（简写为TETA-2TEMPO）及其盐酸羟胺衍生物，N-（ 2,2,6,6-四甲基-1-羟基 - 哌啶-4-基）-N' - {2- [2-（2,2,6,6-四甲基-1-羟基 - 哌啶-4-基氨基 ） - 乙基氨基] - 乙基} - 乙烷-1,2-二胺六盐酸盐（简称为TETA-2TEMPOH-6HCl）。

    Light-stable and process-stable lignocellulosic materials and their production
    6.
    发明申请
    Light-stable and process-stable lignocellulosic materials and their production 失效
    光稳定和工艺稳定的木质纤维素材料及其生产

    公开(公告)号：US20050269049A1

    公开(公告)日：2005-12-08

    申请号：US10532138

    申请日：2003-10-21

    Applicant: Thomas Hu ,  Ivan Pilulik ,  Trevor Williams

    Inventor： Thomas Hu ,  Ivan Pilulik ,  Trevor Williams

    IPC: C08G73/00 ,  C08G73/02 ,  C08H8/00 ,  D21C9/10 ,  D21C9/16

    CPC classification number: C08H8/00 ,  C08G73/00 ,  C08G73/02 ,  C08G73/0226 ,  D21C9/10 ,  D21C9/1047 ,  D21C9/16 ,  D21C9/163

    Abstract: A novel method for the production of light-stable and process-stable lignocellulosic materials, in particular, the production of mechanical wood pulps with much improved light and process stability is described, as well as the resulting pulps of improved light and process stability and papers containing such pulps. The novel method involves the reaction of lignocellulosic materials such as bleached chemithermomechanical pulps (BCTMP) with (a) a water-soluble, fibre-reactive yellowing inhibitor possessing two or more secondary amino or ammonium (—NHR′ or —HN+HR′), tertiary amino or ammonium (—NR′R″ or —HN+R′R″), and/or quaternary ammonium (—N+R′R″R′″) functional groups in an aqueous medium, or (b) a water-soluble, fibre-reactive hindered amine light stabilizer possessing said amino or ammonium functional groups in an alkaline peroxide bleaching medium or in an aqueous medium with a subsequent bleaching of the materials in an alkaline peroxide bleaching medium. Examples of the water-soluble, fibre-reactive yellowing inhibitors are the novel, N-(2,2,6,6-tetramethyl-1-oxyl-piperidin-4-yl)-N′-{2-[2-(2,2,6,6-tetramethyl-1-oxyl-piperidin-4-ylamino)-ethylamino]-ethyl}-ethane-1,2-diamine (abbreviated as TETA-2TEMPO) and its hydroxylamine hydrochloride derivative, N-(2,2,6,6-tetramethyl-1-hydroxyl-piperidin-4-yl)-N′-{2-[2-(2,2,6,6-tetramethyl-1-hydroxyl-piperidin-4-ylamino)-ethylamino]-ethyl}-ethane-1,2-diamine hexahydrochloride (abbreviated as TETA-2TEMPOH-6HCl).

    Abstract translation: 描述了一种用于生产光稳定和工艺稳定的木质纤维素材料的新方法，特别是生产具有大大提高的光和工艺稳定性的机械木浆，以及由此产生的改进的光和工艺稳定性和纸张的纸浆 含有这种纸浆。 该新方法涉及木质纤维素材料如漂白的机械机械纸浆（BCTMP）与（a）具有两个或多个仲氨基或铵（-NHR'或-HN +）的水溶性纤维反应性黄变抑制剂的反应， H'，叔氨基或铵（-NR'R“或-HN”R“R”）和/或季铵（-NO + 或（b）在碱性过氧化物漂白介质中具有所述氨基或铵官能团的水溶性纤维反应性受阻胺光稳定剂，或（b）在碱性过氧化物漂白介质中具有所述氨基或铵官能团的水溶性纤维反应性受阻胺光稳定剂，或 在水性介质中，随后在碱性过氧化物漂白介质中漂白材料。 水溶性纤维反应性黄变抑制剂的实例是新型N-（2,2,6,6-四甲基-1-氧基 - 哌啶-4-基）-N' - {2- [2-（ 2,2,6,6-四甲基-1-氧基 - 哌啶-4-基氨基） - 乙基氨基] - 乙基} - 乙烷-1,2-二胺（简写为TETA-2TEMPO）及其盐酸羟胺衍生物，N-（ 2,2,6,6-四甲基-1-羟基 - 哌啶-4-基）-N' - {2- [2-（2,2,6,6-四甲基-1-羟基 - 哌啶-4-基氨基 ） - 乙基氨基] - 乙基} - 乙烷-1,2-二胺六盐酸盐（简称为TETA-2TEMPOH-6HCl）。

    Preparation of brightness stabilization agent for lignin containing pulp from biomass pyrolysis oils
    7.
    发明授权
    Preparation of brightness stabilization agent for lignin containing pulp from biomass pyrolysis oils 失效
    从生物质热解油制备含木质素的纸浆的亮度稳定剂

    公开(公告)号：US06193837B1

    公开(公告)日：2001-02-27

    申请号：US08933859

    申请日：1997-09-19

    Applicant: Foster A. Agblevor ,  Serpil Besler-Guran

    Inventor： Foster A. Agblevor ,  Serpil Besler-Guran

    IPC: C07C100

    CPC classification number: D21C9/1047 ,  D21H21/143

    Abstract: A process for producing a brightness stabilization mixture of water-soluble organic compounds from biomass pyrolysis oils comprising: a) size-reducing biomass material and pyrolyzing the size-reduced biomass material in a fluidized bed reactor; b) separating a char/ash component while maintaining char-pot temperatures to avoid condensation of pyrolysis vapors; c) condensing pyrolysis gases and vapors, and recovering pyrolysis oils by mixing the oils with acetone to obtain an oil-acetone mixture; d) evaporating acetone and recovering pyrolysis oils; e) extracting the pyrolysis oils with water to obtain a water extract; f) slurrying the water extract with carbon while stirring, and filtering the slurry to obtain a colorless filtrate; g) cooling the solution and stabilizing the solution against thermally-induced gelling and solidification by extraction with ethyl acetate to form an aqueous phase lower layer and an organic phase upper layer; h) discarding the upper organic layer and extracting the aqueous layer with ethyl acetate, and discarding the ethyl acetate fraction to obtain a brown-colored solution not susceptible to gelling or solidification upon heating; i) heating the solution to distill off water and other light components and concentrating a bottoms fraction comprising hydroxyacetaldehyde and other non-volatile components having high boiling points; and j) decolorizing the stabilized brown solution with activated carbon to obtain a colorless solution.

    Abstract translation: 一种用于从生物质热解油生产水溶性有机化合物的亮度稳定混合物的方法，包括：a）减小生物质材料并在流化床反应器中热解尺寸减小的生物质材料; b）分离焦炭/灰分成分，同时 保持焦炭温度以避免热解蒸汽冷凝; c）冷凝热解气体和蒸气，并通过将油与丙酮混合来回收裂解油，得到油 - 丙酮混合物; d）蒸发丙酮并回收裂解油; e）萃取 用水分解热解油得到水提取物; f）在搅拌的同时用水将提取物与碳浆料混合，过滤浆液得到无色滤液; g）冷却溶液，使溶液稳定化以防止热诱导凝胶化和凝固。 用乙酸乙酯形成水相下层和有机相上层; h）弃去上层有机层并萃取 水层用乙酸乙酯洗涤，弃去乙酸乙酯部分，得到加热时不易凝胶化或固化的褐色溶液; i）加热溶液以蒸馏除去水和其它轻质组分，并浓缩包含羟基乙醛和其它的底部馏分 沸点高的非挥发性成分; 和）用活性炭使稳定的棕色溶液脱色，得到无色溶液。

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