Addition of endothermic fire retardants to provide near neutral pH pulp fiber webs

    公开(公告)号:US08460513B2

    公开(公告)日:2013-06-11

    申请号:US13081759

    申请日:2011-04-07

    IPC分类号: D21H17/66 D21H21/34 C09K21/02

    摘要: A process in which an at least partially delignified pulp fiber web having a Kappa number of less than about 130 is treated with an aqueous endothermic fire retardant solution having a pH of about 10 or less. The treated pulp fiber web has a near neutral pH of from about 5 to about 9, and is treated with at least about 20 lbs of endothermic fire retardants per ton of the pulp fiber web, with at least about 5% of the total amount of endothermic fire retardants being added at a point prior to when the pulp fiber web is formed. Also a fire resistant pulp fiber web having a near neutral pH.

    Process for preparing fluff pulp sheet with cationic dye and debonder surfactant and fluff pulp sheet made from same
    2.
    发明申请
    Process for preparing fluff pulp sheet with cationic dye and debonder surfactant and fluff pulp sheet made from same 有权
    用阳离子染料和脱粘剂表面活性剂和由其制成的绒毛纸浆制备绒毛纸浆的方法

    公开(公告)号:US20120048493A1

    公开(公告)日:2012-03-01

    申请号:US13188039

    申请日:2011-07-21

    申请人: JAMES E. SEALEY

    发明人: JAMES E. SEALEY

    摘要: A process is provided for making a fluff pulp sheet, comprising: contacting at least one cationic dye and at least one debonder surfactant with a composition comprising fluff pulp fibers, to form a fluff pulp mixture; forming a web from the fluff pulp mixture; and drying the web, to obtain the fluff pulp sheet. A fluff pulp sheet is also provided, comprising a web comprising fluff pulp fibers; at least one cationic dye; and at least one debonder surfactant. Products and uses of the fluff pulp sheet are also provided.

    摘要翻译: 提供了一种用于制造绒毛纸浆片的方法,其包括:使至少一种阳离子染料和至少一种脱粘剂表面活性剂与包含绒毛纸浆纤维的组合物接触,以形成绒毛浆混合物; 从绒毛浆混合物形成网; 并干燥纸幅,得到绒毛纸浆。 还提供了一种绒毛纸浆片,其包括含有绒毛纸浆纤维的纤维网; 至少一种阳离子染料; 和至少一种脱粘剂表面活性剂。 还提供了绒毛纸浆的产品和用途。

    Cellulose derivatives with a low degree of substitution
    5.
    发明授权
    Cellulose derivatives with a low degree of substitution 失效
    具有低取代度的纤维素衍生物

    公开(公告)号:US5523398A

    公开(公告)日:1996-06-04

    申请号:US296934

    申请日:1994-08-31

    CPC分类号: C08B3/10 C08B3/02

    摘要: The invention is directed to the formation of cellulose derivatives using homogenous phase reaction conditions. Cellulose is dissolved using DMAc/LiCl and a reagent system is added to promote the acylation of an appropriate acid anhydride or free carboxylic acid. One reagent system includes N,N-dicyclohexylcarbodiimide (DCC) and 4-pyrrolidinopyridine (PP). Another reagent system includes p-toluene sulfonyl chloride (TsCl) and pyridine (Py).

    摘要翻译: 本发明涉及使用均相相反应条件形成纤维素衍生物。 使用DMAc / LiCl溶解纤维素,并加入试剂体系以促进合适的酸酐或游离羧酸的酰化。 一种试剂系统包括N,N-二环己基碳二亚胺(DCC)和4-吡咯烷基吡啶(PP)。 另一试剂系统包括对甲苯磺酰氯(TsCl)和吡啶(Py)。

    METHODS AND APPARATUS FOR FORMING FLUFF PULP SHEETS
    6.
    发明申请
    METHODS AND APPARATUS FOR FORMING FLUFF PULP SHEETS 有权
    用于形成FLUFF纸浆的方法和装置

    公开(公告)号:US20130213594A1

    公开(公告)日:2013-08-22

    申请号:US13398144

    申请日:2012-02-16

    IPC分类号: D21H27/30 D21F11/00

    摘要: Processes for making fluff pulp sheets mechanically eliminate many unwanted fiber-to-fiber bonding (fiber bundles) in the sheet. Pulp slurry is deposited on a moving bottom forming wire to form a stock web. Pulp slurry is brought into contact with a moving top forming wire. The stock web is subjected to up and down dewatering creating separately formed layers to reduce fiber-to-fiber bonding. The stock web can be subjected to strong pulsating shear forces as it is being advanced along the bottom forming wire to break fiber bundles. The pulp slurry can be deposited on the bottom forming wire utilizing a headbox with dilution control to selectively adjust the concentration of the pulp slurry. Shoe presses can be used to dewater the web after it is subjected to the pulsating shear forces.

    摘要翻译: 用于制造绒毛纸浆的方法在纸张中机械地消除了许多不需要的纤维 - 纤维粘合(纤维束)。 浆料浆料沉积在移动的底部成形网上以形成原料纤维网。 将纸浆与移动顶部成形丝接触。 坯料经过上下脱水,形成分开形成的层,以减少纤维与纤维的粘结。 当织物沿着底部成形丝线前进时,织物可以受到强烈的脉动剪切力,以破坏纤维束。 纸浆可以利用具有稀释控制的流浆箱沉积在底部成形网上,以选择性地调节纸浆的浓度。 可以使用鞋压机在受到脉动剪切力之后对其进行脱水。

    Use of thinnings and other low specific gravity wood for lyocell products method
    9.
    发明授权
    Use of thinnings and other low specific gravity wood for lyocell products method 有权
    使用稀释剂和其他低比重木材作为lyocell产品的方法

    公开(公告)号:US06685856B2

    公开(公告)日:2004-02-03

    申请号:US10336320

    申请日:2003-01-02

    IPC分类号: B29B900

    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。