Use of thinnings and other low specific gravity wood for lyocell products
    11.
    发明授权
    Use of thinnings and other low specific gravity wood for lyocell products 有权
    使用稀释剂和其他低比重木材作为莱赛尔产品

    公开(公告)号:US06686040B2

    公开(公告)日:2004-02-03

    申请号:US10336393

    申请日:2003-01-02

    IPC分类号: D02G300

    摘要: The use of low specific gravity wood from thinning operations, for example, will produce a lower brownstock viscosity for a given kappa number target. A differential of 200-cP falling ball pulp viscosity has been detected from Kraft cooks of low and high specific gravity wood. Using low specific gravity wood can reduce the bleach stage temperature and the chemical dose needed in the bleach plant to produce lyocell pulp specifications. Low specific gravity wood also increases the ability to reduce pulp viscosity to very low levels without increasing the copper number of the pulp or the concentration of carbonyl in the pulp above acceptable levels.

    摘要翻译: 例如,对于给定的卡贝数目标,使用来自变薄操作的低比重木材将产生较低的棕色粘度。 从低比重木材和高比重木材的牛皮纸煮熟中检测到200-cP落球纸粘度的差异。 使用低比重木材可以减少漂白阶段的温度和漂白工厂所需的化学剂量来生产莱赛克纸浆规格。 低比重木材还增加了将纸浆粘度降低至非常低水平而不增加纸浆的铜数或纸浆中羰基浓度高于可接受水平的能力。

    Use of thinnings and other low specific gravity wood for lyocell pulps
    12.
    发明授权
    Use of thinnings and other low specific gravity wood for lyocell pulps 有权
    使用稀释剂和其他低比重木材作为lyocell纸浆

    公开(公告)号:US06686039B2

    公开(公告)日:2004-02-03

    申请号:US10336389

    申请日:2003-01-02

    IPC分类号: D02G300

    摘要: The use of low specific gravity wood from thinning operations, for example, will produce a lower brownstock viscosity for a given kappa number target. A differential of 200-cP falling ball pulp viscosity has been detected from Kraft cooks of low and high specific gravity wood. Using low specific gravity wood can reduce the bleach stage temperature and the chemical dose needed in the bleach plant to produce lyocell pulp specifications. Low specific gravity wood also increases the ability to reduce pulp viscosity to very low levels without increasing the copper number of the pulp or the concentration of carbonyl in the pulp above acceptable levels.

    摘要翻译: 例如,对于给定的卡贝数目标,使用来自变薄操作的低比重木材将产生较低的棕色粘度。 从低比重木材和高比重木材的牛皮纸煮熟中检测到200-cP落球纸粘度的差异。 使用低比重木材可以减少漂白阶段的温度和漂白工厂所需的化学剂量来生产莱赛克纸浆规格。 低比重木材还增加了将纸浆粘度降低至非常低水平而不增加纸浆的铜数或纸浆中羰基浓度高于可接受水平的能力。

    Lyocell fibers, and compositions for making same
    18.
    发明授权
    Lyocell fibers, and compositions for making same 有权
    Lyocell纤维,以及制造相同的组合物

    公开(公告)号:US06210801B1

    公开(公告)日:2001-04-03

    申请号:US09256197

    申请日:1999-02-24

    IPC分类号: B32B2300

    摘要: The present invention provides compositions, useful for making lyocell fibers, having a high hemicellulose content, a low lignin content and including cellulose that has a low average degree of polymerization (D.P.). Further, the present invention provides processes for making compositions, useful for making lyocell fibers, having a high hemicellulose content, a low lignin content and including cellulose that has a low average degree of polymerization. The present invention also provides lyocell fibers containing a high proportion of hemicellulose. Further, the lyocell fibers of the present invention have enhanced dye-binding properties and a reduced tendency to fibrillate.

    摘要翻译: 本发明提供可用于制备具有高半纤维素含量,低木质素含量并且包括具有低平均聚合度(D.P。)的纤维素的莱赛尔纤维的组合物。 此外,本发明提供了制备可用于制备具有高半纤维素含量,低木质素含量并且包括具有低平均聚合度的纤维素的莱赛尔纤维的组合物的方法。 本发明还提供含有高比例的半纤维素的溶胞酶纤维。 此外,本发明的莱赛尔纤维具有增强的染料结合性能和降低的原纤维化趋势。