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    • 21. 发明申请
    • PROCESS FOR THE PREPARATION OF A STARCH ESTER
    • 制备淀粉酶的方法
    • WO1998029455A1
    • 1998-07-09
    • PCT/FI1997000838
    • 1997-12-31
    • VALTION TEKNILLINEN TUTKIMUSKESKUSLAMMERS, GeertTIITOLA, PerttiVUORENPÄÄ, Jani
    • VALTION TEKNILLINEN TUTKIMUSKESKUS
    • C08B31/04
    • C08B31/04
    • Process for the preparation of a starch ester, in particular a starch acetate, wherein a starch-based feedstock is reacted with an organic carboxylic acid anhydride in the presence of a catalyst. The reaction of the starch-based feedstock and the anhydride is performed at an excess pressure of about 0.1 to 50 bar in an essentially anhydrous medium containing 10 % by weight of water at the most. As catalyst, sodium acetate, sodium hydroxide or sulphuric acid is used, and as the reaction medium, acetic acid or excess acetanhydride is used. By means of the invention, the duration of the esterification reaction can be significantly shortened, the separation of the product can be facilitated, and the recirculation of the waste solutions can be rendered more efficient.
    • 用于制备淀粉酯,特别是淀粉乙酸酯的方法,其中淀粉基原料与催化剂存在下与有机羧酸酐反应。 基于淀粉的原料和酸酐的反应在约0.1至50巴的过量压力下,在最多含有10重量%水的基本上无水的介质中进行。 作为催化剂,使用乙酸钠,氢氧化钠或硫酸,作为反应介质,使用乙酸或过量的乙酸酐。 通过本发明,可以显着缩短酯化反应的持续时间,可以促进产物的分离,并且可以使废液的再循环更有效率。
    • 24. 发明申请
    • MICROPOROUS CELLULOSE DERIVATIVES AND A METHOD FOR PRODUCING THE SAME
    • 微生物纤维素衍生物及其生产方法
    • WO1995023181A1
    • 1995-08-31
    • PCT/FI1995000090
    • 1995-02-22
    • VALTION TEKNILLINEN TUTKIMUSKESKUSAALTONEN, OlliQVINTUS-LEINO, Pia
    • VALTION TEKNILLINEN TUTKIMUSKESKUS
    • C08J09/12
    • C08J9/18B01J20/24C08J9/122C08J2203/06C08J2301/08
    • A cellulose derivative, for example in the form of film, fibers or particles, is brought to contact with carbon dioxide, preferably at 100 to 400 bar pressure and 50 to 100 DEG C temperature. Carbon dioxide can contain a small amount of additives, such as alcohols. Cellulose derivative swells by the effect of pressurized carbon dioxide. After a certain swelling period the pressure of carbon dioxide is very rapidly reduced causing the cellulose derivative to foam. Depending on the chosen conditions one obtains microporous cellulose derivative material with an average pore size from 0.5 to 50 micrometers. The micropores can be open or closed and their distribution in the foamed material can be adjusted as preferred by changing treatment conditions. Microporous cellulose derivatives can be used for example as support materials for catalysts, enzymes or selective antibodies in immunochromatography. Other applications include ultra light structure materials and microfilters.
    • 纤维素衍生物,例如以薄膜,纤维或颗粒的形式与二氧化碳接触,优选在100至400巴压力和50至100℃的温度下。 二氧化碳可以含有少量的添加剂,如醇。 纤维素衍生物通过加压二氧化碳的作用而膨胀。 在一定的膨胀时间后,二氧化碳的压力非常迅速地降低,导致纤维素衍生物发泡。 根据所选择的条件,得到平均孔径为0.5至50微米的微孔纤维素衍生物材料。 可以打开或关闭微孔,并且可以通过改变处理条件来优化它们在泡沫材料中的分布。 微孔纤维素衍生物可用于例如免疫色谱法中催化剂,酶或选择性抗体的载体材料。 其他应用包括超轻型结构材料和微型过滤器。
    • 29. 发明申请
    • METHOD FOR ENZYMATIC TREATMENT OF LIGNOCELLULOSIC MATERIALS, IN PARTICULAR CELLULOSE PULPS
    • 用于特殊纤维素粉末的细菌性物质的酶处理方法
    • WO1993007332A1
    • 1993-04-15
    • PCT/FI1992000272
    • 1992-10-12
    • VALTION TEKNILLINEN TUTKIMUSKESKUSBUCHERT, JohannaVIIKARI, Liisa
    • VALTION TEKNILLINEN TUTKIMUSKESKUS
    • D21C09/10
    • D21C5/005D21C9/001
    • The present invention concerns a method for enzymatic treatment of lignocellulosic materials, in particular cellulose pulps. According to a method of this kind, the material is contacted with an enzyme preparation having hemicellulase, cellulase and/or ligninase activity in order to hydrolyse the hemicelluloses, cellulose and/or lignin thereof. According to the invention, the counter-ions of the carboxylic groups of the lignocellulosic material are modified before the enzymatic treatment in order to render the material more suitable for enzymatic treatment. By changing the nature of the counter-ions of the carboxylic acids or by changing their degree or dissociation, it is possible to adjust the enzymatic action on the lignocellulosic material of the enzymes employed. At the same time, it is possible to select which part of the fibres is subjected to the enzymatic action.
    • 本发明涉及用于酶处理木质纤维素材料,特别是纤维素纸浆的方法。 根据这种方法,材料与具有半纤维素酶,纤维素酶和/或木质素酶活性的酶制剂接触,以水解其半纤维素,纤维素和/或木质素。 根据本发明,在酶处理之前修饰木质纤维素材料的羧基的抗衡离子,以使材料更适合于酶处理。 通过改变羧酸的反离子的性质或通过改变它们的程度或解离,可以调节所用酶的木质纤维素材料的酶作用。 同时,可以选择纤维的哪一部分进行酶促作用。
    • 30. 发明申请
    • FILTER FOR DILATION AND EROSION OF IMAGES
    • 过滤和图像的渗透
    • WO1992021093A1
    • 1992-11-26
    • PCT/FI1992000147
    • 1992-05-08
    • RAUTARUUKKI OYVALTION TEKNILLINEN TUTKIMUSKESKUSSARKKINEN, TimoPIIRONEN, TimoTIENSYRJÄ, Kari
    • RAUTARUUKKI OYVALTION TEKNILLINEN TUTKIMUSKESKUS
    • G06F15/68
    • G06T5/30
    • The invention relates to a filter for applying dilation and/or erosion operations of mathematical morphology to a W x H local neighbourhood, the width of which is W and the height H, of a two-dimensional matrix formed by discrete values, the width of which matric is x and the height y. In order to provide an operation in real time by means of a very simple structure, the filter comprises a horizontal portion for applying a dilation/erosion operation to a W x 1 local neighbourhood made to slide over the matrix and a vertical portion for applying a dilation/erosion operation to a 1 x H local neighbourhood made to slide over the matrix, whereby the portions are connected one after another, the output (MINW, MINH) of one portion being connected to the input (IH, IV) of the other portion.
    • 本发明涉及一种用于将数学形态的扩张和/或侵蚀操作应用于W x H局部邻域的滤波器,其宽度为W和由离散值形成的二维矩阵的高度H,宽度 哪个矩阵是x和高度y。 为了通过非常简单的结构实时提供操作,滤波器包括用于对W×1局部邻域进行扩张/侵蚀操作的水平部分,该区域在矩阵上滑动,垂直部分用于施加 对1×H局部邻域进行扩张/侵蚀操作,使其在矩阵上滑动,由此这些部分依次连接,一部分的输出(MINW,MINH)连接到另一个的输入端(IH,IV) 一部分。