利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

7 条记录 (耗时 0.019 秒)

    METHODS FOR PRODUCING MODIFIED MICROCRYSTALLINE CHITOSAN AND USES THEREFOR
    1.
    发明申请
    METHODS FOR PRODUCING MODIFIED MICROCRYSTALLINE CHITOSAN AND USES THEREFOR 审中-公开
    生产改性微晶蛋白的方法及其用途

    公开(公告)号：US20070087997A1

    公开(公告)日：2007-04-19

    申请号：US11563532

    申请日：2006-11-27

    申请人： Henry Struszczyk ,  Antoni Niekraszewicz ,  Magdelena Kucharska ,  Alojzy Urbanowski ,  Maria Wisniewska-Wrona ,  Ewa Wesolowska ,  Danuta Ciechanska

    发明人： Henry Struszczyk ,  Antoni Niekraszewicz ,  Magdelena Kucharska ,  Alojzy Urbanowski ,  Maria Wisniewska-Wrona ,  Ewa Wesolowska ,  Danuta Ciechanska

    IPC分类号： C08B37/08 ,  A61K31/722

    CPC分类号： C12P19/26 ,  C08B37/003

    摘要： Disclosed are methods of producing modified microcrystalline chitosan. Chitosan in aqueous solution is degraded enzymatically, hydrolytically or oxidatively. The chitosan solution is then alkalized with agitation using aqueous hydroxides and/or their salts to attain a pH not lower than 7.0. The precipitated modified microcrystalline chitosan is highly pure and may be concentrated and dried according to known methods. Methods according to the invention also include methods by which an aqueous solution of chitosan is first alkalized using hydroxides and/or their salts to a pH not lower than 7.0. Then the precipitated microcrystalline chitosan is subjected to enzymatic or oxidative degradation to achieve a desired average molecular weight and polydispersity. The product is highly pure and may be concentrated and dried according to known methods.

    摘要翻译： 公开了生产改性微晶壳聚糖的方法。 壳聚糖在水溶液中酶促，水解或氧化降解。 然后使用氢氧化物水溶液和/或其盐进行搅拌使壳聚糖溶液碱化以达到不低于7.0的pH。 沉淀的改性微晶壳聚糖是高纯度的，并且可以根据已知方法进行浓缩和干燥。 根据本发明的方法还包括使用氢氧化物和/或它们的盐将壳聚糖的水溶液首先碱化至pH不低于7.0的方法。 然后将沉淀的微晶壳聚糖进行酶促或氧化降解以获得所需的平均分子量和多分散性。 该产品是高纯度的，并可根据已知方法进行浓缩和干燥。

    Methods of producing modified microcrystalline chitosan and uses therefor
    4.
    发明授权
    Methods of producing modified microcrystalline chitosan and uses therefor 失效
    生产改性微晶壳聚糖的方法及用途

    公开(公告)号：US07482019B2

    公开(公告)日：2009-01-27

    申请号：US10501202

    申请日：2003-01-08

    申请人： Henryk Struszczyk ,  Antoni Niekraszewicz ,  Magdelena Kucharska ,  Alojzy Urbanowski ,  Maria Wisniewska-Wrona ,  Ewa Wesolowska ,  Danuta Ciechanska

    发明人： Henryk Struszczyk ,  Antoni Niekraszewicz ,  Magdelena Kucharska ,  Alojzy Urbanowski ,  Maria Wisniewska-Wrona ,  Ewa Wesolowska ,  Danuta Ciechanska

    IPC分类号： A61K9/00 ,  A61K36/06

    CPC分类号： C12P19/26 ,  C08B37/003

    摘要： Disclosed are methods of producing modified microcrystalline chitosan. Chitosan in aqueous solution is degraded enzymatically, hydrolytically or oxidatively. The chitosan solution is then alkalized with agitation using aqueous hydroxides and/or their salts to attain a pH not lower than 7.0. The precipitated modified microcrystalline chitosan is highly pure and may be concentrated and dried according to known methods. Methods according to the invention also include methods by which an aqueous solution of chitosan is first alkalized using hydroxides and/or their salts to a pH not lower than 7.0. Then the precipitated microcrystalline chitosan is subjected to enzymatic or oxidative degradation to achieve a desired average molecular weight and polydispersity. The product is highly pure and may be concentrated and dried according to known methods.

    摘要翻译： 公开了生产改性微晶壳聚糖的方法。 壳聚糖在水溶液中酶促，水解或氧化降解。 然后使用氢氧化物水溶液和/或其盐进行搅拌使壳聚糖溶液碱化以达到不低于7.0的pH。 沉淀的改性微晶壳聚糖是高纯度的，并且可以根据已知方法进行浓缩和干燥。 根据本发明的方法还包括使用氢氧化物和/或它们的盐将壳聚糖的水溶液首先碱化至pH不低于7.0的方法。 然后将沉淀的微晶壳聚糖进行酶促或氧化降解以获得所需的平均分子量和多分散性。 该产品是高纯度的，并可根据已知方法进行浓缩和干燥。

    Methods of producing modified microcrystalline chitosan and uses therefor
    5.
    发明申请
    Methods of producing modified microcrystalline chitosan and uses therefor 失效
    生产改性微晶壳聚糖的方法及用途

    公开(公告)号：US20050019873A1

    公开(公告)日：2005-01-27

    申请号：US10501202

    申请日：2003-01-08

    申请人： Henryk Struszczyk ,  Antoni Niekraszewicz ,  Magdelena Kucharska ,  Alojzy Urbanowski ,  Maria Wisniewska-Wrona ,  Ewa Wesolowska ,  Danuta Ciechanska

    发明人： Henryk Struszczyk ,  Antoni Niekraszewicz ,  Magdelena Kucharska ,  Alojzy Urbanowski ,  Maria Wisniewska-Wrona ,  Ewa Wesolowska ,  Danuta Ciechanska

    IPC分类号： C08B37/08 ,  C12P19/26

    CPC分类号： C12P19/26 ,  C08B37/003

    摘要： Disclosed are methods of producing modified microcrystalline chitosan. Chitosan in aqueous solution is degraded enzymatically, hydrolytically or oxidatively. The chitosan solution is then alkalized with agitation using aqueous hydroxides and/or their salts to attain a pH not lower than 7.0. The precipitated modified microcrystalline chitosan is highly pure and may be concentrated and dried according to known methods. Methods according to the invention also include methods by which an aqueous solution of chitosan is first alkalized using hydroxides and/or their salts to a pH not lower than 7.0. Then the precipitated microcrystalline chitosan is subjected to enzymatic or oxidative degradation to achieve a desired average molecular weight and polydispersity. The product is highly pure and may be concentrated and dried according to known methods.

    摘要翻译： 公开了生产改性微晶壳聚糖的方法。 壳聚糖在水溶液中酶促，水解或氧化降解。 然后使用氢氧化物水溶液和/或其盐进行搅拌使壳聚糖溶液碱化以达到不低于7.0的pH。 沉淀的改性微晶壳聚糖是高纯度的，并且可以根据已知方法进行浓缩和干燥。 根据本发明的方法还包括使用氢氧化物和/或它们的盐将壳聚糖的水溶液首先碱化至pH不低于7.0的方法。 然后将沉淀的微晶壳聚糖进行酶促或氧化降解以获得所需的平均分子量和多分散性。 该产品是高纯度的，并可根据已知方法进行浓缩和干燥。

    Chitosan-calcium complex and methods of producing the complex
    6.
    发明申请
    Chitosan-calcium complex and methods of producing the complex 审中-公开
    壳聚糖 - 钙复合物及其制备方法

    公开(公告)号：US20050053663A1

    公开(公告)日：2005-03-10

    申请号：US10501173

    申请日：2003-01-08

    申请人： Henryk Struszczyk ,  Antoni Niekraszewicz ,  Magdelena Kucharska ,  Alojzy Urbanowski ,  Kinga Brzoza ,  Danuta Ciechanska ,  Maria Wisniewska-Wrona

    发明人： Henryk Struszczyk ,  Antoni Niekraszewicz ,  Magdelena Kucharska ,  Alojzy Urbanowski ,  Kinga Brzoza ,  Danuta Ciechanska ,  Maria Wisniewska-Wrona

    IPC分类号： C08B37/08 ,  C08L5/08 ,  A61K9/14

    CPC分类号： C08B37/003 ,  C08L5/08

    摘要： Chitosan-calcium complexes of calcium (II) ions with a gel of a chitosan salt, containing not less than 0.5 wt % of the polymer with an average molecular weight not less than 10 kD, a polydispersity degree not lower than 2.0 and a deacetylation degree at least 65%. The complex is characterized by pH not higher than 6.9 and a calcium Ca (II) ions content not less than 0.1 wt % on chitosan. Methods to prepare chitosan-calcium complexes use a gel of a chitosan salt, containing not less than 0.5 wt % of the polymer. Calcium salts are introduced in the amount of at least 0.1 wt % Ca (II) on chitosan weight. The mixture is next homogenized and reacted at 10° C. during a time not shorter than 1 minute. Methods of producing a gel of chitosan salts involves subjecting a chitosan with the concentration of at least 0.5 wt % in an aqueous acidic solution to a controlled enzymatic, hydrolytic or oxidative degradation.

    摘要翻译： 钙（II）离子的壳聚糖 - 钙络合物与壳聚糖盐的凝胶组成，含有不少于0.5重量％的平均分子量不小于10kD的聚合物，多分散度不低于2.0，脱乙酰度 至少65％。 该配合物的特征在于pH不高于6.9，Ca（II）离子含量对壳聚糖不低于0.1重量％。 制备壳聚糖 - 钙配合物的方法使用壳聚糖盐的凝胶，其含有不小于聚合物重量的0.5％重量。 钙盐以壳聚糖重量计至少0.1wt％Ca（II）的量引入。 接着将混合物均匀化并在10℃下反应不少于1分钟。 生产壳聚糖盐凝胶的方法包括在酸性水溶液中使浓度至少为0.5重量％的壳聚糖进行受控的酶促，水解或氧化降解。

    Process for preparing chitosan particles
    7.
    发明授权
    Process for preparing chitosan particles 失效
    制备壳聚糖颗粒的方法

    公开(公告)号：US06740752B2

    公开(公告)日：2004-05-25

    申请号：US10278534

    申请日：2002-10-23

    申请人： Henryk Struszcyk ,  Antoni Niekraszewicz ,  Magdalena Kucharska ,  Alojzy Urbanowski ,  Maria Wisniewska-Wrona

    发明人： Henryk Struszcyk ,  Antoni Niekraszewicz ,  Magdalena Kucharska ,  Alojzy Urbanowski ,  Maria Wisniewska-Wrona

    IPC分类号： C08B3708

    CPC分类号： C08J3/12 ,  A01N43/16 ,  C08B37/003 ,  C08J2305/08 ,  C08L5/08

    摘要： Disclosed is a process for producing particles of the modified carbohydrate polymer chitosan. Such chitosan particles are “activated” as a consequence of the specific steps used in the process. The process involves precipitation of dissolved chitosan from an acid solution thereof by the step-wise addition of neutralizing agent to the solution. A partial neutralization is carried out under shear agitation to form a continuous gel phase having a pH within the range of 5.0 to 6.9. This partially neutralized chitosan gel phase is then further subjected to shear agitation for at least 10 seconds to homogenize the gel phase. The homogenized gel phase is then further neutralized under shear agitation to a pH of above 6.9 to form a gel-like suspension of discrete chitosan particles. Chitosan particles in this form are useful in a number of contexts including, in particular, in the area of plant care.

    摘要翻译： 公开了一种生产改性碳水化合物聚合物壳聚糖颗粒的方法。 作为该方法中使用的具体步骤的结果，这种壳聚糖颗粒被“活化”。 该方法包括通过逐步加入中和剂将溶解的壳聚糖从其酸溶液沉淀。 在剪切搅拌下进行部分中和以形成pH在5.0至6.9的范围内的连续凝胶相。 然后将该部分中和的壳聚糖凝胶相进一步进行剪切搅拌至少10秒以使凝胶相均化。 然后将均质化的凝胶相在剪切搅拌下进一步中和至高于6.9的pH以形成离散的壳聚糖颗粒的凝胶状悬浮液。 这种形式的壳聚糖颗粒在许多情况下是有用的，特别是在植物保护领域。