利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

46 条记录 (耗时 0.026 秒)

    Modified natural rubber
    22.
    发明授权
    Modified natural rubber 失效
    改性天然橡胶

    公开(公告)号：US06797783B1

    公开(公告)日：2004-09-28

    申请号：US08941132

    申请日：1997-09-30

    申请人： Yasuyuki Tanaka ,  Naoya Ichikawa ,  Toshiaki Sakaki ,  Yuichi Hioki ,  Masaharu Hayashi

    发明人： Yasuyuki Tanaka ,  Naoya Ichikawa ,  Toshiaki Sakaki ,  Yuichi Hioki ,  Masaharu Hayashi

    IPC分类号： C08F25506

    CPC分类号： C08C19/06 ,  C08F253/00 ,  C08L51/04 ,  C08L2666/02

    摘要： A modified natural rubber is disclosed, which is obtained by modifying a deproteinized natural rubber having a nitrogen content of less than 0.10% by weight. A process for improving the graft ratio and the graft efficiency of natural rubber and a process for improving the epoxidation ratio of natural rubber are also disclosed. The modified natural rubber of the present invention has a high modifying efficiency and thus shows an excellent modifying effect. It is also useful as a means for preventing allergy.

    摘要翻译： 公开了通过改性氮含量低于0.10重量％的脱蛋白天然橡胶而得到的改性天然橡胶。 还公开了改善天然橡胶的接枝率和接枝效率的方法以及改善天然橡胶的环氧化比例的方法。 本发明的改性天然橡胶具有高的改性效果，因此显示出优异的改性效果。 它也可用作防止过敏的手段。

    Low allergenic natural rubber and method of preparing low allergenic natural rubber latex
    23.
    发明授权
    Low allergenic natural rubber and method of preparing low allergenic natural rubber latex 有权
    低过敏天然橡胶及其制备低过敏天然橡胶胶乳的方法

    公开(公告)号：US06784281B2

    公开(公告)日：2004-08-31

    申请号：US09986374

    申请日：2001-11-08

    申请人： Naoya Ichikawa ,  Yoshiaki Miyamoto ,  Masaharu Hayashi

    发明人： Naoya Ichikawa ,  Yoshiaki Miyamoto ,  Masaharu Hayashi

    IPC分类号： C08L104

    CPC分类号： C08C1/04 ,  Y10S528/932 ,  Y10S528/934 ,  Y10S528/935

    摘要： A method of preparing a low allergic natural rubber latex which is less likely to cause allergy, comprising adding a protease having an exopeptidase activity to a natural rubber latex and aging the natural rubber latex, thereby to decompose a protein in the latex to such a degree that the protein and a protein decomposition product, which have a number-average molecular weight of 4500 or more, are not detected; a method of preparing a deproteinized natural rubber latex which is less likely to cause allergy, comprising adding an alkali protease to a natural rubber latex, thereby to decompose a protein in the latex, adding a protease having an exopeptidase activity, thereby to further decompose the protein and a decomposition product thereof in the latex, and removing the protein and the decomposition product thereof; a low allergic natural rubber obtained by a decomposition treatment of a protein, wherein the protein and a protein decomposition product, which have a number-average molecular weight of 4500 or more, are not detected; and a deproteinized natural rubber obtained by a decomposition treatment and a removing treatment of a protein, wherein the content of the protein is 0.02% or less in terms of a nitrogen content, an absorption at 3280 cm−1 is not recognized in an infrared absorption spectrum, and the protein and a protein decomposition product, which have a number-average molecular weight of 4500 or more, are not detected.

    摘要翻译： 一种制备不太可能引起过敏的低过敏性天然橡胶胶乳的方法，包括向天然橡胶胶乳中加入具有外肽酶活性的蛋白酶，并使天然橡胶胶乳老化，从而将胶乳中的蛋白质分解至此程度 没有检测到数均分子量为4500以上的蛋白质和蛋白质分解产物; 一种制备不太可能引起过敏的脱蛋白天然橡胶胶乳的方法，包括向天然橡胶胶乳中加入碱性蛋白酶，从而分解胶乳中的蛋白质，加入具有外肽酶活性的蛋白酶，从而进一步分解 蛋白质及其分解产物，除去蛋白质及其分解产物; 通过蛋白质的分解处理获得的低过敏性天然橡胶，其中未检测到数均分子量为4500以上的蛋白质和蛋白质分解产物; 以及通过分解处理和蛋白质去除处理得到的脱蛋白天然橡胶，其中，以氮含量计，蛋白质的含量为0.02％以下，在3280cm -1的吸收在 红外吸收光谱，并且没有检测到数均分子量为4500以上的蛋白质和蛋白质分解产物。

    Process for producing deproteinized natural rubber using protease and anionic surfactant
    24.
    发明授权
    Process for producing deproteinized natural rubber using protease and anionic surfactant 有权
    使用蛋白酶和阴离子表面活性剂生产脱蛋白天然橡胶的方法

    公开(公告)号：US06204358B1

    公开(公告)日：2001-03-20

    申请号：US09357077

    申请日：1999-07-19

    申请人： Yasuyuki Tanaka ,  Yuichi Hioki ,  Naoya Ichikawa

    发明人： Yasuyuki Tanaka ,  Yuichi Hioki ,  Naoya Ichikawa

    IPC分类号： C08C104

    CPC分类号： C08C1/04 ,  Y10S528/932

    摘要： A deproteinized natural rubber substantially free from any protein and a process for producing the same which comprises treating a latex with a protease and a specific surfactant or a combination of specific surfactants and separating rubber particles are disclosed. A method for elevating the green strength of a natural rubber and a method for lowering the green strength of a natural rubber are also disclosed. Furthermore, a means for preventing allergy induced by natural rubberis also disclosed.

    摘要翻译： 公开了一种基本上不含任何蛋白质的脱蛋白天然橡胶及其制备方法，其包括用蛋白酶和特定表面活性剂或特定表面活性剂和分离橡胶颗粒的组合处理胶乳。 还公开了提高天然橡胶的生坯强度的方法和降低天然橡胶的生坯强度的方法。 此外，还公开了一种预防由天然橡胶引起的变态反应的方法。

    RUBBER COMPOSITION FOR TREAD, METHOD FOR PRODUCING THE SAME, AND HEAVY-LOAD TIRE
    26.
    发明申请
    RUBBER COMPOSITION FOR TREAD, METHOD FOR PRODUCING THE SAME, AND HEAVY-LOAD TIRE 有权
    用于TREAD的橡胶组合物，用于生产它们的方法和重负荷轮胎

    公开(公告)号：US20130030083A1

    公开(公告)日：2013-01-31

    申请号：US13560090

    申请日：2012-07-27

    申请人： Takafumi TAGUCHI ,  Naoya Ichikawa

    发明人： Takafumi TAGUCHI ,  Naoya Ichikawa

    IPC分类号： C08L7/02 ,  C08K3/04

    CPC分类号： C08C1/04 ,  B60C1/0016 ,  C08C1/15 ,  C08L7/00 ,  C08L15/00 ,  Y02T10/862 ,  Y10T152/10 ,  C08L9/00

    摘要： The present invention provides a rubber composition for a tread which enables improvement in fuel economy, breaking performance, and abrasion resistance in a balanced manner; a method for producing the rubber composition; and a heavy-load tire. The present invention relates to a rubber composition for a tread of a heavy-load tire, including a modified natural rubber having a phosphorus content of 200 ppm or less, and carbon black.

    摘要翻译： 本发明提供一种用于胎面的橡胶组合物，其能够以均衡的方式提高燃料经济性，断裂性能和耐磨性; 橡胶组合物的制造方法; 和一个重载轮胎。 本发明涉及一种重载轮胎的胎面用橡胶组合物，其包含磷含量为200ppm以下的改性天然橡胶和炭黑。

    Preparation process of oil extended rubber for tire, oil extended rubber for tire, and rubber composition and tire using the same
    29.
    发明申请
    Preparation process of oil extended rubber for tire, oil extended rubber for tire, and rubber composition and tire using the same 有权
    用于轮胎的油延伸橡胶，轮胎用油延伸橡胶，橡胶组合物和使用其的轮胎的制备方法

    公开(公告)号：US20070232745A1

    公开(公告)日：2007-10-04

    申请号：US11723680

    申请日：2007-03-21

    申请人： Toshiaki Sakaki ,  Naoya Ichikawa ,  Takayuki Hattori ,  Chee-Cheong Ho ,  Choong Dick Hean

    发明人： Toshiaki Sakaki ,  Naoya Ichikawa ,  Takayuki Hattori ,  Chee-Cheong Ho ,  Choong Dick Hean

    IPC分类号： B60C1/00

    CPC分类号： C08K5/0016 ,  C08C1/14 ,  C08C19/06 ,  C08K5/01 ,  C08K5/103 ,  C08L21/00 ,  C08L15/00

    摘要： The present invention provides a process for preparing an oil extended rubber, in which an effect on environments can be taken into consideration, provision for the future decrease of petroleum supply can be satisfied, and further, strength is excellent without molecular breakage, an oil extended rubber obtained by the preparation process, and a tire using the oil extended rubber. A process for preparing an oil extended rubber, comprising (a) a step of preparing an oil-in-water type emulsion by emulsifying a vegetable oil having an iodine value of not less than 135 with a surfactant, (b) a step of mixing said emulsion and a modified natural rubber latex, and then aging the mixture, and (c) a step of coagulating the mixture obtained in the step (b) to obtain a lump of a rubber, an oil extended rubber obtained by the preparation process, and a rubber composition for a tire and a tire which use the oil extended rubber.

    摘要翻译： 本发明提供了一种制备延油橡胶的方法，其中可以考虑对环境的影响，可以满足将来石油供应减少的要求，而且在没有分子破裂的情况下，强度优异，油扩展 通过制备方法获得的橡胶，以及使用延油橡胶的轮胎。 一种制备延油橡胶的方法，包括（a）通过用表面活性剂乳化碘值不小于135的植物油来制备水包油型乳液的步骤，（b）混合步骤 所述乳液和改性天然橡胶胶乳，然后使所述混合物老化，和（c）使步骤（b）中获得的混合物凝固的步骤获得橡胶块，通过制备方法获得的延油橡胶， 以及使用该油延伸橡胶的轮胎和轮胎用橡胶组合物。

    Cationic deproteinized natural rubber latex, method of preparing the same, and treating agent used in the method
    30.
    发明授权
    Cationic deproteinized natural rubber latex, method of preparing the same, and treating agent used in the method 失效
    阳离子脱蛋白天然橡胶胶乳，其制备方法以及该方法中使用的处理剂

    公开(公告)号：US06462159B1

    公开(公告)日：2002-10-08

    申请号：US09657816

    申请日：2000-09-08

    申请人： Akihiko Hamada ,  Naoya Ichikawa ,  Masaharu Hayashi

    发明人： Akihiko Hamada ,  Naoya Ichikawa ,  Masaharu Hayashi

    IPC分类号： C08F11234

    CPC分类号： C08C1/04 ,  Y10S528/932 ,  Y10S528/934

    摘要： Disclosed are a cationic deproteinized natural rubber latex, in which rubber particles are positively charged and the concentration of said rubber particles is from 40 to 65% by weight and that the viscosity at 25° C. of said latex is 200 mPa·s or less, a method of preparing said latex which comprises subjecting to a deprotenization treatment using a proteolytic enzyme and a deproteinizing agent made of one or more surfactant selected from cationic and nonionic surfactants, and optionally adding a post additive comprising a cationic or nonionic surfactant as an active component, thereby to enable both surfactants described above to coexist, and a treating agent used in the same.

    摘要翻译： 公开了一种阳离子去蛋白天然橡胶胶乳，其中橡胶颗粒带正电并且所述橡胶颗粒的浓度为40至65重量％，并且所述胶乳的25℃下的粘度为200mPa.s以下 制备所述胶乳的方法，其包括使用蛋白水解酶和由一种或多种选自阳离子和非离子表面活性剂的表面活性剂制成的脱蛋白剂进行脱苹果化处理，以及任选地加入包含阳离子或非离子表面活性剂的后添加剂作为活性物质 从而使上述两种表面活性剂共存，以及其中使用的处理剂。