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公开(公告)号：WO2015126467A1
公开(公告)日：2015-08-27
申请号：PCT/US2014/063047
申请日：2014-10-30
Applicant: CELANESE ACETATE LLC
Inventor： FALLON, Denis , ALLEN, Leslie , ARORA, Dinesh , BOATWRIGHT, Monica , BUNDREN, Christopher M. , COMBS, Michael , LI, Bin , LI, Rongfu , MEHTA, Jay , PAN, Tianshu
CPC classification number: D21H11/00
Abstract: Dissolving-grade pulp compositions are prepared by treating a cellulosic material with an extractant comprising a cellulose solvent and co-solvent. The dissolving-grade pulp compositions comprise at least 90 wt.% glucan, from 0.6 to 5 wt.% xylan, and have distinct molecular weights, and elemental metal ions from known and commercially available dissolving-grade pulp compositions.
Abstract translation: 通过用包含纤维素溶剂和共溶剂的萃取剂处理纤维素材料来制备溶解级纸浆组合物。 溶解级纸浆组合物包含至少90重量％的葡聚糖，0.6至5重量％的木聚糖，并且具有不同的分子量和来自已知和市售的溶解级纸浆组合物的元素金属离子。
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公开(公告)号：WO2016022459A1
公开(公告)日：2016-02-11
申请号：PCT/US2015/043383
申请日：2015-08-03
Applicant: CELANESE ACETATE LLC
Inventor： LI, Bin , ALLEN, Leslie , ARORA, Dinesh , BANSAL, Prabuddha , BOATWRIGHT, Monica , BUNDREN, Christopher , COMBS, Michael T. , FALLON, Denis , LI, Rongfu , MEHTA, Jay , PAN, Tianshu
CPC classification number: D21H17/14 , C08B37/0057 , C08H8/00 , D21H11/00 , D21H17/07
Abstract: A process for treating a cellulosic material comprising pretreating the cellulosic material and then extracting the cellulosic material with an extractant to selectively extract hemicellulose therefrom and separating the extracted hemicellulose to form a cellulosic product comprising less hemicellulose than the cellulosic material. The extractant comprises a cellulose solvent and a co-solvent. The cellulosic product advantageously retains its cellulosic fiber morphology. The processes involve separating and recovering the hemicellulose and separating and recycling various process streams employed in the process.
Abstract translation: 一种用于处理纤维素材料的方法，包括预处理纤维素材料，然后用提取剂萃取纤维素材料以从其中选择性提取半纤维素，并分离提取的半纤维素以形成包含比纤维素材料少的半纤维素的纤维素产品。 萃取剂包括纤维素溶剂和共溶剂。 纤维素产品有利地保留其纤维素纤维形态。 该方法包括分离和回收半纤维素，并分离和回收在该方法中使用的各种工艺流。
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公开(公告)号：WO2015126468A1
公开(公告)日：2015-08-27
申请号：PCT/US2014/063049
申请日：2014-10-30
Applicant: CELANESE ACETATE LLC
Inventor： FALLON, Denis , ALLEN, Leslie , ARORA, Dinesh , BOATWRIGHT, Monica , BUNDREN, Christopher M. , COMBS, Michael , LI, Bin , LI, Rongfu , MEHTA, Jay , PAN, Tianshu
CPC classification number: C08L5/14 , C08B37/0003 , C08B37/0057 , C08H8/00
Abstract: Hemicellulose compositions are prepared by treating a cellulosic material with an extractant comprising a cellulose solvent and co-solvent. The hemicellulose compositions preferably comprise from 55 to 99 wt.% xylan and have distinct molecular weights, elemental metal ions, and intrinsic viscosities when compared to known hemicellulose compositions.
Abstract translation: 通过用包含纤维素溶剂和共溶剂的萃取剂处理纤维素材料来制备半纤维素组合物。 与已知的半纤维素组合物相比，半纤维素组合物优选包含55至99重量％的木聚糖并具有不同的分子量，元素金属离子和特性粘度。
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