公开(公告)号：US09297111B1

公开(公告)日：2016-03-29

申请号：US14208759

申请日：2014-03-13

申请人： Domtar Corporation

发明人： Bruno Marcoccia ,  Michael Edwards ,  Marvin Duncan Cooper

IPC分类号： D21C9/00 ,  C01B17/82 ,  C08B15/08 ,  D21C5/00 ,  C13K1/04 ,  C01B17/90

CPC分类号： D21C9/004 ,  C01B17/903 ,  C08B15/08 ,  C13K1/04 ,  D21C5/00 ,  D21C9/04 ,  D21H11/18

摘要： Embodiments of the present invention relates generally to methods and systems for the manufacture of cellulose nanocrystals. In one embodiment, a method for manufacturing cellulose nanocrystals comprises reacting lignocellulosic fibers with sulfuric acid in water, introducing a water-insoluble solvent to substantially terminate the reaction, separating a first stream comprising at least 70% of the unreacted sulfuric acid in the water-insoluble solvent from a second stream comprising a plurality of cellulose nanocrystals and the remainder of the unreacted sulfuric acid in water, and separating the cellulose nanocrystals from the second stream.

摘要翻译： 本发明的实施方案一般涉及用于制造纤维素纳米晶体的方法和系统。 在一个实施方案中，制备纤维素纳米晶体的方法包括使木质纤维素纤维与硫酸在水中反应，引入水不溶性溶剂以基本上终止反应，将含有至少70％的未反应的硫酸的第一物流在水 - 来自包含多个纤维素纳米晶体的第二流的不溶性溶剂和在水中的其余未反应的硫酸，并将纤维素纳米晶体与第二流分离。

公开(公告)号：US20140057105A1

公开(公告)日：2014-02-27

申请号：US13836760

申请日：2013-03-15

申请人： DOMTAR CORPORATION

发明人： Harshad Pande ,  Bruno Marcoccia

IPC分类号： D01B9/00 ,  D02J3/02

CPC分类号： D01B9/00 ,  D02J3/02 ,  D21B1/04 ,  D21C9/007 ,  D21D1/06 ,  D21D1/20 ,  D21D1/26 ,  D21H11/00 ,  D21H11/08 ,  D21H11/10 ,  D21H11/16 ,  D21H15/02 ,  Y10T428/298

摘要： Various embodiments of the present invention relate to surface enhanced pulp fibers, various products incorporating surface enhanced pulp fibers, and methods and systems for producing surface enhanced pulp fibers. Various embodiments of surface enhanced pulp fibers have significantly increased surface areas compared to conventional refined fibers while advantageously minimizing reductions in length following refinement. The surface enhanced pulp fibers can be incorporated into a number of products that might benefit from such properties including, for example, paper products, paperboard products, fiber cement boards, fiber reinforced plastics, fluff pulps, hydrogels, cellulose acetate products, and carboxymethyl cellulose products. In some embodiments, a plurality of surface enhanced pulp fibers have a length weighted average fiber length of at least about 0.3 millimeters and an average hydrodynamic specific surface area of at least about 10 square meters per gram, wherein the number of surface enhanced pulp fibers is at least 12,000 fibers/milligram on an oven-dry basis.

摘要翻译： 本发明的各种实施方案涉及表面增强纸浆纤维，包含表面增强纸浆纤维的各种产品，以及用于生产表面增强纸浆纤维的方法和系统。 与常规精制纤维相比，表面增强纸浆纤维的各种实施方案具有显着增加的表面积，同时有利地最小化精炼后的长度减小。 表面增强的纸浆纤维可以结合到可以受益于诸如纸制品，纸板产品，纤维水泥板，纤维增强塑料，绒毛纸浆，水凝胶，醋酸纤维素产品和羧甲基纤维素的许多产品中 产品。 在一些实施方案中，多个表面增强的纸浆纤维具有至少约0.3毫米的长度加权平均纤维长度和至少约10平方米/克的平均流体动力比表面积，其中表面增强纸浆纤维的数量为 至少12,000纤维/毫升，烘干。