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1.发明授权Two stage process for the oxygen delignification of lignocellulosic fibers with peroxide reinforcement in the first stage 失效第一阶段过氧化物增强的木质纤维素纤维氧脱木质的两阶段工艺
公开(公告)号：US5011572A
公开(公告)日：1991-04-30
申请号：US354522
申请日：1989-05-19
CPC分类号： D21C9/163 , D21C9/1057
摘要： A process is provided for a two-stage oxygen delignification of chemical pulp in which 0.01% to 1% hydrogen peroxide is incorporated into the first and, optionally the second stage. The invention is particularly suitable when the pulp is subsequently bleached with at least one chlorine dioxide stage and at least one hydrogen peroxide stage.
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2.发明授权Selective enzymatic oxidation of aromatic methyl groups to aldehydes by oxygen in the presence of a laccase-mediator catalyst 失效在漆酶介质催化剂存在下，通过氧气将芳香族甲基选择性氧化成醛
公开(公告)号：US5888787A
公开(公告)日：1999-03-30
申请号：US677338
申请日：1996-07-02
CPC分类号： C12Y110/03002 , C12N9/0061 , C12P7/24
摘要： A method for oxidation of a pendant methyl moiety on an aromatic ring to the pendant aldehyde moiety is presented. The reaction employs laccase and the diammonium salt of 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid), and is carried out in the presence of oxygen.
摘要翻译： 提出了将芳环上的侧甲基部分氧化成侧醛部分的方法。 反应采用漆酶和2,2'-氮杂双（2-乙基苯并噻唑啉-6-磺酸）的二铵盐，并在氧的存在下进行。
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3.发明授权Process for the delignification of cellulosic substances by pretreating with a complexing agent followed by hydrogen peroxide 失效通过用络合剂预处理，然后用过氧化氢去除纤维素物质的脱木质素的方法
公开(公告)号：US4826567A
公开(公告)日：1989-05-02
申请号：US34501
申请日：1987-03-27
申请人： Josef S. Gratzl
发明人： Josef S. Gratzl
CPC分类号： D21C3/26
摘要： Process for the delignification of cellulosic substances comprising:a first stage of treatment of cellulosic substances with an acida second stage of treatment with hydrogen peroxide in an alkaline mediuma third stage of digestion in the presence of at least one chemical reactant chosen from hydroxides of alkaline or alkaline-earth metals.The process applies to the treatment of wood fragments.
摘要翻译： 纤维素物质脱木质素的方法，其包括：第一阶段用酸处理纤维素物质，在碱性介质中用过氧化氢处理第二阶段，在至少一种选自以下的化合物的化学反应物存在下进行第三阶段的消化： 碱性或碱土金属。 该过程适用于木材碎片的处理。
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4.发明授权Process for delignification of cellulosic substances by pretreating with a complexing agent followed by peroxide prior to kraft digestion 失效通过在螯合消化之前用络合剂和随后的过氧化物进行预处理来使纤维素物质脱木质素的方法
公开(公告)号：US4826568A
公开(公告)日：1989-05-02
申请号：US20232
申请日：1987-03-02
申请人： Josef S. Gratzl
发明人： Josef S. Gratzl
CPC分类号： D21C3/26
摘要： Process for the delignification of cellulosic substances comprising:a first stage of treatment of cellulosic substances with an acida second stage of treatment with hydrogen peroxide in an alkaline mediuma third stage of digestion in the presence of at least one chemical reactant chosen from sulphur-containing compounds and oxygen.The process applies to the treatment of wood fragments.
摘要翻译： 纤维素物质脱木质素的方法，包括：第一阶段用酸处理纤维素物质，在碱性介质中用过氧化氢处理第二阶段，在至少一种选自硫酸盐的化学反应物存在下进行第三阶段的消化， 含有化合物和氧气。 该过程适用于木材碎片的处理。
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