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15 条记录 (耗时 0.033 秒)

    Method for mechanochemical treatment of a material
    7.
    发明授权
    Method for mechanochemical treatment of a material 失效
    材料机械化学处理方法

    公开(公告)号：US06431958B1

    公开(公告)日：2002-08-13

    申请号：US09623468

    申请日：2000-10-11

    申请人： Nicole Brú-Magniez ,  Benrard Kurdyk ,  Claude Roques-Carmes ,  Pascal Breton ,  Joël Richard

    发明人： Nicole Brú-Magniez ,  Benrard Kurdyk ,  Claude Roques-Carmes ,  Pascal Breton ,  Joël Richard

    IPC分类号： B24B100

    CPC分类号： C23C24/04 ,  B24C11/00 ,  C09K3/1436

    摘要： The invention concerns a method for the mechanochemical treatment of a material characterised in that to improve said material surface properties by mechanochemical anchoring, such as in particular its adhesive capacity during subsequent assembling, or to improve its use properties by producing composite structure surface coatings, consisting in projecting on said material particles with laminated structure consisting of a core and a coating comprising at least a polymer and optionally a chemical agent, in conditions such that said particles and/or fragments resulting from their fracturing are embedded and/or penetrate into said material. The invention is applicable in dentistry, the biomedical field, motor industry, avionics, printing industries, agro-industry, mechanical industries.

    摘要翻译： 本发明涉及一种用于材料的机械化学处理的方法，其特征在于通过机械化学锚固来改善所述材料表面性质，例如其在后续组装过程中的粘合能力，或通过生产复合结构表面涂层来改善其使用性能，其包括 在由包括至少一种聚合物和任选的化学试剂的芯和包含至少一种聚合物和任选的化学试剂的涂层组成的叠层结构上的所述材料颗粒上突出，使得由它们的压裂产生的所述颗粒和/或片段被嵌入和/或渗入所述材料 。 本发明适用于牙科，生物医学领域，电机工业，航空电子，印刷工业，农业工业，机械工业。

    Method for preparing microcapsules comprising active materials coated with a polymer and novel microcapsules in particular obtained according to the method
    8.
    发明授权
    Method for preparing microcapsules comprising active materials coated with a polymer and novel microcapsules in particular obtained according to the method 有权
    制备包含用聚合物涂覆的活性材料的微胶囊的方法，特别是根据该方法获得的新型微胶囊

    公开(公告)号：US06183783B2

    公开(公告)日：2001-02-06

    申请号：US09269173

    申请日：1999-06-22

    申请人： Jean-Pierre Benoit ,  Joël Richard ,  Curt Thies

    发明人： Jean-Pierre Benoit ,  Joël Richard ,  Curt Thies

    IPC分类号： A61K916

    CPC分类号： B01J13/02 ,  A61K9/1694

    摘要： The invention concerns a method for preparing microcapsules containing an active substance coated with a substantially polar polymer film, characterized in that it consists in the following steps: suspending an active substance insoluble in a substantially polar polymer solution in an organic solvent, said substantially polar polymer being insoluble in liquid or supercritical CO2, said organic solvent being soluble in liquid or supercritical CO2; contacting the suspension with liquid or supercritical CO2 so as to extract the solvent from the polymer in a controlled manner and ensure the coacervation of the polymer; substantially extracting the solvent by means of supercritical CO2 and draining off the CO2/solvent mixture; recuperating the microcapsules in the form of dry powder. The invention also concerns microcapsules containing an active substance coated with a substantially polar polymer selected among the group consisting of polysaccharides, cellulose derivatives, acrylic, methacrylic polymers or derivatives of esters of vinyl, polyesters, polyamides, polyanhydrides, polyorthoesters and polyphosphazenes, characterized in that the polymer film has low surface energy and is free from organic solvent and in that the microcapsules are obtainable by said method.

    摘要翻译： 本发明涉及一种制备含有涂有基本极性聚合物膜的活性物质的微胶囊的方法，其特征在于其包括以下步骤：将不溶于基本上极性的聚合物溶液中的活性物质悬浮在有机溶剂中，所述基本上极性的聚合物 不溶于液体或超临界CO2，所述有机溶剂可溶于液体或超临界CO2; 使悬浮液与液体或超临界CO 2接触，以便以受控的方式从聚合物中提取溶剂，并确保聚合物的凝聚; 通过超临界CO 2大量萃取溶剂并排出CO 2 /溶剂混合物; 将干燥粉末形式的微胶囊回收。 本发明还涉及包含用选自多糖，纤维素衍生物，丙烯酸，甲基丙烯酸聚合物或乙烯基酯，聚酯，聚酰胺，聚酐，聚原酸酯和聚磷腈的酯衍生物的基本上极性的聚合物涂覆的活性物质的微胶囊，其特征在于 聚合物膜具有低表面能并且不含有机溶剂，并且所述微胶囊可通过所述方法获得。

    Water-redispersible powders of film-forming polymers having a core/shell structure
    10.
    发明授权
    Water-redispersible powders of film-forming polymers having a core/shell structure 失效
    具有核/壳结构的成膜聚合物的水可再分散粉末

    公开(公告)号：US06224981B1

    公开(公告)日：2001-05-01

    申请号：US08973526

    申请日：1997-12-05

    申请人： Joël Richard ,  William Bett

    发明人： Joël Richard ,  William Bett

    IPC分类号： B32B100

    CPC分类号： C08F291/00 ,  Y10T428/2998 ,  C08F2/22

    摘要： The present invention relates to a water-redispersible powder based on film-forming polymers which are substantially water-insoluble and which are prepared by aqueous emulsion polymerization of monomers containing ethylenic unsaturation and with a “core/shell” structure comprising a hydrophobic core based on a polymer exhibiting a Tg (glass transition temperature) of between −30 and 25° C., preferably between −10 and 20° C., and a shell, the shell being bonded to the core by covalent bonds resulting from the reaction of an agent for grafting the shell onto the ethylenic unsaturations remaining in the core, characterized in that the shell is prepared by emulsion polymerization, on the core particles, of a mixture of monomers comprising at least one monomer chosen from styrene and a C1-C12 alkyl acrylate or methacrylate, at least one monomer carrying a saccharide group and exhibiting at least one ethylenic unsaturation, and at least one grafting agent.

    摘要翻译： 本发明涉及一种基于成膜聚合物的基于水不溶性的水再分散粉末，它是通过含有烯属不饱和单体和“核/壳”结构的单体的水乳液聚合制备的，该结构包含基于 表现出Tg（玻璃化转变温度）在-30和25℃之间，优选在-10至20℃之间的聚合物，以及壳，壳通过由 用于将壳接枝到残留在芯中的烯属不饱和基团上的试剂，其特征在于，通过在芯颗粒上乳液聚合制备包含至少一种选自苯乙烯和丙烯酸C 1 -C 12烷基酯的单体的混合物的混合物制备外壳 或甲基丙烯酸酯，至少一种携带糖基并表现出至少一个烯属不饱和度的单体和至少一种接枝剂。