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    • 4. 发明授权
    • Process for ammoniating cellulosic materials
    • 氨化纤维素材料的工艺
    • US06548659B1
    • 2003-04-15
    • US09823206
    • 2001-03-30
    • Gary BreitenbeckKeith Kember
    • Gary BreitenbeckKeith Kember
    • C08B100
    • C08H8/00C08B1/00C08B15/06C08L1/02C08L97/02Y10S426/807
    • Process for enriching the organic nitrogen content of commercial scale quantities of cellulosic materials which includes the steps of: a) placing substantially dry or unwetted cellulosic material in a pressurizable reactor; b) injecting an ammonia or ammonia-forming nitrogen solution into the reactor until the cellulosic material is approximately submerged; c) setting the temperature in the reactor to maintain a liquid temperature between about 80 and 200° C.; d) pressurizing the reactor to at least 750 psi; e) maintaining the temperature and pressure in the reactor for a period of time sufficient for the organically bound nitrogen content of the cellulosic material to exceed about 1.5%; and f) drying the cellulosic material to a moisture content sufficiently low to arrest microbial activity.
    • 用于富集商业规模量的纤维素材料的有机氮含量的方法,其包括以下步骤:a)将基本上干燥或未净化的纤维素材料放置在可加压的反应器中; b)将氨或形成氨的氮溶液注入反应器,直到纤维素材料近似浸没; c)设置反应器中的温度以保持液体温度在约80和200℃之间; d)将反应器加压至至少750psi; e)将反应器中的温度和压力维持足以使纤维素材料的有机结合的氮含量超过约1.5%的时间; 和f)将纤维素材料干燥至足够低的水分含量以阻止微生物活性。
    • 5. 发明授权
    • Powdered/microfibrillated cellulose
    • 粉末/微纤维素纤维素
    • US06821531B2
    • 2004-11-23
    • US09946658
    • 2001-09-05
    • Vijay Kumar
    • Vijay Kumar
    • C08B100
    • A61K47/38A61K9/0014A61K9/1652A61K9/2054C08B15/02
    • A new cellulose excipient suitable for use as a binder, filler, and/or disintegrant in the development of solid dosage forms and as a bodying agent or a drug carrier in the preparation of topical formulations is described. The cellulose excipient is formed by soaking a source of cellulose in an aqueous alkali metal hydroxide solution. The cellulose is then regenerated, washed, and optionally hydrolyzed with a dilute mineral acid. The cellulose excipient is also useful as an aqueous dispersion in topical formulations and in the manufacture of cellulose beads.
    • 描述了适用于在制备固体剂型中作为粘合剂,填充剂和/或崩解剂的新型纤维素赋形剂以及作为局部制剂制剂中的保护剂或药物载体。 通过将纤维素源浸入碱金属氢氧化物水溶液中形成纤维素赋形剂。 然后将纤维素再生,洗涤并任选地用稀无机酸水解。 纤维素赋形剂也可用作局部制剂中的水性分散体和纤维素珠的制造。
    • 6. 发明授权
    • Process for preparing homogeneous cellulose solution by using supercooled liquid N-methylmorpholine-N-oxide hydrate solvent
    • 使用过冷液体N-甲基吗啉-N-氧化物水合物溶剂制备均匀纤维素溶液的方法
    • US06677447B1
    • 2004-01-13
    • US09706846
    • 2000-11-07
    • Wha Seop LeeSeong Mu JoSeok Gu KoDong Bok Kim
    • Wha Seop LeeSeong Mu JoSeok Gu KoDong Bok Kim
    • C08B100
    • C08L1/02C08B1/003
    • Disclosed is a process for preparing a homogeneous cellulose solution which is capable of, forming a mixture where a cellulose pulp powder is mixed and swollen with a liquid NMMO hydrate solvent supercooled under a melting point and subjecting the mixture to a dissolution treatment, thereby producing a homogeneous cellulose solution having a substantially low decomposition characteristic. The process produces a cellulose pulp mixing powder that is first swollen in a liquid NMMO solvent supercooled under a melting point by minimizing the dissolution of cellulose by the liquid NMMO solvent and maximizing the swelling thereof by the liquid NMMO solvent, thereby resulting in a maximum homogeneity of the solution and maintains the minimized decomposition states of the cellulose and the NMMO solvent, thereby resulting in the improvement of productivity and the simplicity of the process.
    • 公开了一种制备均匀纤维素溶液的方法,该方法能够形成混合物,其中纤维素纸浆粉末与在熔点过冷的液体NMMO水合物溶剂混合并溶胀,并使混合物进行溶解处理,从而产生 均匀的纤维素溶液具有基本上低的分解特性。 该方法产生纤维素浆混合粉末,其首先在熔点过冷的液体NMMO溶剂中溶胀,通过使液体NMMO溶剂使纤维素溶解最小化,并通过液体NMMO溶剂使其溶胀最大化,从而产生最大的均匀性 的溶液,并维持纤维素和NMMO溶剂的最小分解状态,从而导致生产率的提高和方法的简单性。
    • 8. 发明授权
    • Process for producing cellulosic shaped objects
    • 纤维素状物的制造方法
    • US06190596B1
    • 2001-02-20
    • US09242321
    • 1999-04-09
    • Derek BudgellUlrich WachsmannWilhelm Kramer
    • Derek BudgellUlrich WachsmannWilhelm Kramer
    • C08B100
    • D01F2/00C08B1/003C08L1/02C08L2666/02
    • A process for producing cellulosic shaped objects includes extruding and coagulating a solution of chemical wood pulp in a tertiary amine oxide, and possibly a liquid that does not dissolve wood pulp and is miscible with the tertiary amine oxide, the solution capable of being shaped into objects, the process of producing the shapeable solution employing a first wood pulp with a higher degree of polymerization and a second wood pulp with a lower degree of polymerization, and whereby initially a solution of the first wood pulp with a higher degree of polymerization in the tertiary amine oxide and possibly non-dissolving liquid, and a composition containing the second wood pulp with a lower degree of polymerization, tertiary amine oxide, and possibly non-dissolving liquid, are prepared separately, and the solution and composition are subsequently at least mixed to obtain the shapeable solution.
    • 用于生产纤维素形物体的方法包括将化学木浆的溶液挤出和凝结在叔胺氧化物中,并且可能的是不溶解木浆的液体,并且可与叔胺氧化物混溶,该溶液能够成形为物体 使用具有较高聚合度的第一木浆和具有较低聚合度的第二木浆生产可成形溶液的方法,并且由此最初在第三级中具有较高聚合度的第一木浆的溶液 氧化胺和可能不溶解的液体,并且分别制备含有聚合度较低的第二木浆,叔胺氧化物和可能不溶解的液体的组合物,然后将溶液和组合物至少混合 获得可塑的解决方案。