中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

209 records (took 0.029 seconds)

    Method for producing crystalline methacrylic resin and plastic foam
    71.
    发明授权
    Method for producing crystalline methacrylic resin and plastic foam 失效
    生产结晶甲基丙烯酸树脂和塑料泡沫的方法

    公开(公告)号：US06444719B1

    公开(公告)日：2002-09-03

    申请号：US09529012

    申请日：2000-04-06

    Applicant: Tomohiro Mizumoto ,  Masahiko Moritani ,  Norio Sugimura

    Inventor： Tomohiro Mizumoto ,  Masahiko Moritani ,  Norio Sugimura

    IPC: B29C4402

    CPC classification number: C08J9/122 ,  C08J5/00 ,  C08J9/12 ,  C08J2201/032 ,  C08J2333/12

    Abstract: Provided are a method for producing a crystalline methacrylic resin, the method comprising a step of bringing a mixture of an isotactic methyl methacrylate-type polymer and a syndiotactic methyl methacrylate-type polymer into contact with high pressure gas and a method for producing a plastic foam of the crystalline methacrylic resin, the method comprising a step of foaming the mixture. According to the method of the present invention, a crystalline methacrylic resin which is not limited in a form applicable to molded articles thereof and has high crystallinity and excellent solvent resistance can be obtained in a simple method and a plastic foam of the crystalline methacrylic resin can be obtained, the plastic foam embracing fine cells having an average cell diameter of about 10 &mgr;m or less and a cell number density of 109 to 1015 cells/cm3. Such a plastic foam is superior in the solvent resistance and in the mechanical properties such as impact resistance and bending strength.

    Abstract translation: 提供一种生产结晶甲基丙烯酸树脂的方法，该方法包括使全同立构甲基丙烯酸甲酯类聚合物和间同立构甲基丙烯酸甲酯类聚合物的混合物与高压气体接触的步骤和制造塑料泡沫的方法 的结晶甲基丙烯酸树脂，该方法包括使混合物发泡的步骤。 根据本发明的方法，可以简单的方法得到结晶性甲基丙烯酸系树脂，其结晶性甲基丙烯酸系树脂的塑料泡沫体可以通过简单的方法得到结晶性甲基丙烯酸系树脂，该结晶性甲基丙烯酸系树脂不限于其成形品，结晶性高，耐溶剂性优异 可以获得具有平均泡孔直径约10μm或更小并且孔数密度为109至1015个/ cm 3的细胞的塑料泡沫。 这种塑料泡沫体的耐溶剂性和耐冲击性和弯曲强度等机械性能优异。

    Process for producing foamed resin article
    72.
    发明授权
    Process for producing foamed resin article 失效
    生产泡沫树脂制品的方法

    公开(公告)号：US06399667B1

    公开(公告)日：2002-06-04

    申请号：US09536802

    申请日：2000-03-28

    Applicant: Mitsunori Nodono ,  Ryuma Kuroda

    Inventor： Mitsunori Nodono ,  Ryuma Kuroda

    IPC: C08J908

    CPC classification number: C08J9/12 ,  B29C44/348 ,  C08J2201/032 ,  C08J2323/12

    Abstract: The present invention provides a process for producing a foamed resin article, the process comprising: a step (the first step) of impregnating any one crystalline thermoplastic resin or resin composition containing, as an elementary ingredient, a crystalline thermoplastic resin selected from a certain group, under an elevated pressure which is not lower than the critical pressure of a substance with which the selected crystalline thermoplastic resin or resin composition is to be impregnated, with a fluid of the substance, and a step (the second step) of releasing the resin or resin composition impregnated with the substance from the foregoing pressurized condition in a period of less than 10 seconds.

    Abstract translation: 本发明提供一种发泡树脂制品的制造方法，其特征在于，包括以下步骤（第一工序）：浸渍任意一种结晶性热塑性树脂或树脂组合物，所述结晶性热塑性树脂或树脂组合物含有选自以下组成的结晶性热塑性树脂作为基本成分 在不低于要浸渍所选择的结晶热塑性树脂或树脂组合物的物质的临界压力的升高的压力下与该物质的流体和释放树脂的步骤（第二步骤）或 树脂组合物在小于10秒的时间内从上述加压条件浸渍该物质。

    Heat-resistant polymer foam, process for producing the same, and foam substrate
    73.
    发明申请
    Heat-resistant polymer foam, process for producing the same, and foam substrate 审中-公开
    耐热聚合物泡沫，其制造方法和泡沫基材

    公开(公告)号：US20010031794A1

    公开(公告)日：2001-10-18

    申请号：US09826867

    申请日：2001-04-06

    Inventor： Takayuki Yamamoto ,  Amane Mochizuki ,  Takami Hikita ,  Tomohiro Taruno ,  Tomohide Banba ,  Mitsuhiro Kanada

    IPC: C08J009/00

    CPC classification number: C08J9/12 ,  B29C44/348 ,  C08J2201/032 ,  C08J2203/06 ,  C08J2203/08 ,  C08J2379/08 ,  Y10T428/31681

    Abstract: A heat-resistant polymer foam is disclosed which has excellent heat resistance, a fine cellular structure, and a low apparent density. The heat-resistant polymer foam comprises a heat-resistant polymer having a glass transition point of 120null C. or higher, e.g., a polyimide or polyether imide, and has an average cell diameter of from 0.01 nullm to less than 10 nullm. This heat-resistant polymer foam can be produced by, for example, impregnating a heat-resistant polymer under pressure with an non-reactive gas such as carbon dioxide, which is in, e.g., a supercritical state, reducing the pressure, and then heating the polymer at a temperature exceeding 120null C. to foam the polymer.

    Abstract translation: 公开了一种耐热聚合物泡沫体，其具有优异的耐热性，细微结构和低表观密度。 耐热聚合物泡沫体包含玻璃化转变点为120℃以上的耐热聚合物，例如聚酰亚胺或聚醚酰亚胺，平均泡孔直径为0.01〜10μm。 该耐热性聚合物泡沫体可以通过例如在耐压聚合物中用非反应性气体如二氧化碳浸渍，例如二氧化碳，例如超临界状态，降低压力，然后加热 聚合物在超过120℃的温度下使聚合物发泡。

    Flexible, low density thermoplastic foams and methods for lowering the density and increasing the flexibility of thermoplastic foams
    74.
    发明申请
    Flexible, low density thermoplastic foams and methods for lowering the density and increasing the flexibility of thermoplastic foams 审中-公开
    柔性，低密度热塑性泡沫以及降低密度和增加热塑性泡沫柔性的方法

    公开(公告)号：US20010003756A1

    公开(公告)日：2001-06-14

    申请号：US09759670

    申请日：2001-01-12

    Applicant: Armacell Enterprice GMBH

    Inventor： David W. Kreiser ,  Allan L. Dinkel ,  Juerg Patrik Weibel

    IPC: C08J009/12 ,  B29D001/00 ,  C08J009/14

    CPC classification number: B29C44/3453 ,  B29C44/26 ,  C08J9/40 ,  C08J2201/032 ,  C08J2300/24

    Abstract: A flexible, low density thermoplastic foam and a method for lowering the density and increasing the flexibility of a thermoplastic foam having a melting temperature and being either amorphous with a softening temperature or semicrystalline with a glass transition temperature. The method comprises the steps of (a) decreasing the pressure on the thermoplastic foam to a subatmospheric pressure, farther providing that while the thermoplastic foam is under the subatmospheric pressure, the thermoplastic foam is also at a temperature in the range of less than the melting temperature and greater than the softening temperature if the thermoplastic foam is amorphous, or greater than the glass transition temperature if the thermoplastic foam is semicrystalline, whereby the thermoplastic foam expands; (b) then exposing the thermoplastic foam to a superatmospheric pressure and a secondary expansion gas for a sufficient amount of time to allow the secondary blowing gas to permeate into the thermoplastic foam; and (c) then releasing the superatmospheric pressure on the thermoplastic foam whereby the thermoplastic foam expands. With this method, it is possible to produce thermoplastic foams having densities as low as 0.008 grams/cc. Also included in his invention are insulations made from these low density foams.

    Abstract translation: 一种柔性低密度热塑性泡沫塑料，以及一种降低密度并提高具有熔融温度的热塑性泡沫塑料的柔性的方法，并且具有软化温度为无定形或玻璃化转变温度的半晶体。 该方法包括以下步骤：（a）将热塑性泡沫塑料的压力降低至低于大气压，进一步规定，当热塑性泡沫体处于低于大气压的压力下，热塑性泡沫体的温度也处于小于熔化温度 如果热塑性泡沫是无定形的，则大于软化温度，如果热塑性泡沫是半结晶的，则大于玻璃化转变温度，从而使热塑性泡沫膨胀; （b）然后将热塑性泡沫体暴露于超大气压和二次​​膨胀气体足够的时间以允许二次吹入气体渗透到热塑性泡沫中; 和（c）然后释放热塑性泡沫上的超大气压力，由此热塑性泡沫膨胀。 通过这种方法，可以生产密度低至0.008克/立方厘米的热塑性泡沫塑料。 在他的发明中还包括由这些低密度泡沫制成的绝缘体。

    Expanded fluorine type resin products and a preparation process thereof
    75.
    发明授权
    Expanded fluorine type resin products and a preparation process thereof 失效
    膨胀型氟树脂产品及其制备方法

    公开(公告)号：US5814409A

    公开(公告)日：1998-09-29

    申请号：US921528

    申请日：1997-09-02

    Applicant: Toshioki Hane ,  Hisao Koike

    Inventor： Toshioki Hane ,  Hisao Koike

    IPC: B24B37/04 ,  B24D11/00 ,  B24D13/14 ,  C08J9/12 ,  C08J9/14 ,  C08J9/28 ,  B32B27/00

    CPC classification number: B24B37/24 ,  B24B37/04 ,  B24D11/00 ,  C08J9/122 ,  C08J9/127 ,  C08J9/149 ,  C08J9/28 ,  C08J2201/03 ,  C08J2201/032 ,  C08J2205/052 ,  C08J2323/02 ,  C08J2327/12 ,  Y10T428/24992 ,  Y10T428/249976 ,  Y10T428/3154

    Abstract: The present invention relates to an expanded product comprising a thermoplastic fluroine type resin which does not have a cross-linking structure and has an expansion ratio of between 4-fold and 30-fold and a closed cell percentage of 40% or more. The expanded product contains at least one interface comprising layers having different cell densities and has a distribution index (Sc) and a coefficient of variation (Cv) of the maximum diameter of an open cell present at an optional cross section of each layer of 0

    Abstract translation: 本发明涉及一种膨胀产品，其包含不具有交联结构且膨胀率在4倍至30倍之间的热塑性氟仿型树脂，闭孔率为40％以上。 膨胀产品包含至少一个界面，其包含具有不同细胞密度的层，并且具有分布指数（Sc）和存在于每个层0的任意横截面处的开放细胞的最大直径的变异系数（Cv） 分别由以下等式表示：Sc =（LMax.-LMin。）/ Lav。（1）Cv = SD / Lav。（2）其中，LMax 。，LMin。 和拉夫。 分别表示开放细胞的最大直径的最大值，最小值和平均值; SD表示标准偏差。 膨胀产品可以用作电子材料的抛光布，并且不会使边缘变钝，长时间表现出稳定的抛光性能，并且具有优异的机械强度如撕裂强度和抗压强度，压缩前后的介电常数 膨胀产品，以及优异的耐电压性。

Patent Agency Ranking