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    • 2. 发明授权
    • Continuous method for producing polyamides from aminonitriles
    • 从氨腈生产聚酰胺的连续方法
    • US06288207B1
    • 2001-09-11
    • US09600958
    • 2000-07-25
    • Ralf MohrschladtDieter KraussVolker Hildebrandt
    • Ralf MohrschladtDieter KraussVolker Hildebrandt
    • C08G6904
    • C08G69/04C08G69/08C08G69/16
    • The continuous process for producing a polyamide by reacting at least one aminonitrile with water comprises the following steps: (1) reacting at least one aminonitrile with water at a temperature from 90 to 400° C. and a pressure from 0.1 to 15×106 Pa in a flow tube containing packing elements of a Brönsted acid catalyst selected from beta-zeolite, sheet-silicate or titanium dioxide packing elements and metallic packing elements to obtain a reaction mixture, (2) further reacting the reaction mixture at from 150 to 400° C. and a pressure which is lower than the pressure in step 1, the temperature and pressure being selected so as to obtain a first gas phase and a first liquid or a first solid phase or a mixture of first solid and first liquid phase, and the first gas phase is separated from the first liquid or first solid phase or the mixture of first liquid and first solid phase, and (3) admixing the first liquid or the first solid phase or the mixture of first liquid and first solid phase with a gaseous or liquid phase comprising water at a temperature from 150 to 370° C. and a pressure from 0.1 to 30×106 Pa to obtain a product mixture.
    • 通过使至少一种氨基腈与水反应生产聚酰胺的连续方法包括以下步骤:(1)在90至400℃的温度和0.1至15×10 6 Pa的压力下使至少一种氨基腈与水反应, 含有选自β-沸石,片状硅酸盐或二氧化钛填料的布朗斯台德酸催化剂的填充元件和金属填充元素的流动管,以获得反应混合物,(2)使反应混合物在150-400℃下进一步反应 和低于步骤1中的压力的​​压力,选择温度和压力以获得第一气相和第一液体或第一固相或第一固体和第一液相的混合物,第一 气相与第一液体或第一固相或第一液体和第一固相的混合物分离,和(3)混合第一液体或第一固相或第一液体和第一固体p的混合物 在含有水的温度为150〜370℃,压力为0.1〜30×10 6 Pa的气相或液相中搅拌,得到产物混合物。
    • 3. 发明授权
    • Process for producing polyamides from aminonitriles
    • 从氨腈制备聚酰胺的方法
    • US06194538B1
    • 2001-02-27
    • US09242714
    • 1999-02-22
    • Robert WeissDieter KraussDieter KellerGunter PipperWolfgang HarderAlfons LudwigRalf Mohrschladt
    • Robert WeissDieter KraussDieter KellerGunter PipperWolfgang HarderAlfons LudwigRalf Mohrschladt
    • C08G6904
    • C08G69/04C08G69/08C08G69/28C08G69/36
    • A process for preparing a polyamide by reacting at least one aminonitrile with water comprises: (1) reacting at least one aminonitrile with water at a temperature from 100 to 360° C. and a pressure from 0.1 to 35×106 Pa to obtain a reaction mixture, (2) further reacting the reaction mixture at a temperature from 150 to 400° C. and a pressure which is lower than the pressure in step 1, the temperature and the pressure being selected so as to obtain a first gas phase and a first liquid or a first solid phase or a mixture of first solid and first liquid phase, and the first gas phase is separated from the first liquid or the first solid phase or from the mixture of first liquid and first solid phase, and (3) admixing the first liquid or the first solid phase or the mixture of first liquid and first solid phase with a gaseous or liquid phase comprising water at a temperature from 150 to 360° C. and a pressure from 0.1 to 30×106 Pa to obtain a product mixture.
    • 通过使至少一种氨基腈与水反应制备聚酰胺的方法包括:(1)在100至360℃的温度和0.1至35×10 6 Pa的压力下使至少一种氨基腈与水反应,得到反应混合物, (2)在150-400℃的温度和低于步骤1中的压力的​​压力下使反应混合物进一步反应,选择温度和压力以获得第一气相和第一液体 或第一固相或第一固相和第一液相的混合物,并且第一气相与第一液体或第一固相或第一液体和第一固相的混合物分离,以及(3)将 第一液体或第一固相或第一液体和第一固相的混合物与气相或液相在150至360℃的温度和0.1至30×10 6 Pa的压力下包含水以获得产物混合物。
    • 6. 发明授权
    • Friction bearing and method of making such a bearing
    • 摩擦轴承和制造这种轴承的方法
    • US4137618A
    • 1979-02-06
    • US792781
    • 1977-05-02
    • Dieter Krauss
    • Dieter Krauss
    • F16C11/06F16C33/20B21D53/10
    • F16C33/201F16C11/0633F16C33/20F16C33/205F16C33/208F16C2208/32Y10T29/49661Y10T29/4967
    • Spherical friction or sliding bearings are produced by first making a laminate from a layer of a thermosetting resin and a layer of material having a low friction coefficient. The thermosetting resin is used to impregnate a first web or fabric. The low friction coefficient material may be provided in the form of a further webbing or fabric, for instance, made of polytetrafluoroethylene. The thermosetting material may, for example, be a phenolic resin which is at this point of manufacture in its A-state and hence tacky. In order to permit the immediate further processing of the laminate with the thermosetting resin still in its tacky A-state, a dry adhesive film which neutralizes the tackiness, is applied to the laminate in sandwich formation which is then cut into pieces or strips of suitable size. The sandwich strips are then placed into a mold and pre-shaped and precision cut at room temperatures while the resin is still in its A-state. The pre-shaped low friction coefficient laminate is then assembled with the outer and inner bearing members and heated under pressure to such an extent that the thermosetting resin changes substantially from its A-state to its C-state while rapidly passing through the B-state.
    • 球形摩擦或滑动轴承通过首先由热固性树脂层和具有低摩擦系数的材料层制成层压体来制造。 热固性树脂用于浸渍第一纤维网或织物。 低摩擦系数材料可以以另外的织带或织物的形式提供,例如由聚四氟乙烯制成。 热固性材料可以是例如酚醛树脂,其在该制造点处于其A状态并因此是发粘的。 为了使热固性树脂立即进一步加工处于其粘性A-状态的层压体,将中和粘合性的干燥粘合剂膜施加到夹层结构的层压体上,然后将其切成适当的 尺寸。 然后将三明治条放置在模具中并在树脂仍处于A状态的情况下在室温下进行预成型和精密切割。 然后将预成形的低摩擦系数层压体与外部和内部轴承构件组装并在加压下加热到使得热固性树脂基本上从其A状态转变到其C状态的程度,同时快速穿过B状态 。