Method of producing 1,2-polybutadiene
    1.
    发明授权
    Method of producing 1,2-polybutadiene 失效
    1,2-聚丁二烯的制备方法

    公开(公告)号:US4153767A

    公开(公告)日:1979-05-08

    申请号:US853904

    申请日:1977-11-22

    IPC分类号: C08F136/06 C08F4/70 C08F36/06

    CPC分类号: C08F136/06

    摘要: Butadiene polymers containing 70% or more of 1,2-structure and a relatively low melting point are produced by polymerizing 1,3-butadiene in the presence of a catalyst which has been prepared by admixing (A) an organic solvent solution containing 1,3-butadiene, a cobalt compound and an organoaluminium compound; (B) an amide compound of the formula (2) or (3): ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are respectively an H atom, aliphatic hydrocarbon radical of 1 to 7 carbon atoms or aromatic hydrocarbon radical of 6 or 7 carbon atoms, R.sub.3 is H or an aliphatic hydrocarbon radical of 1 to 3 carbon atoms and n is 2 to 5, and; (C) carbon disulfide.

    摘要翻译: 含有70%以上1,2-结构和较低熔点的丁二烯聚合物是通过在催化剂存在下聚合1,3-丁二烯而制备的,所述催化剂是通过将(A)含有1, 3-丁二烯,钴化合物和有机铝化合物; (B)式(2)或(3)的酰胺化合物:其中R1,R2和R3分别为H原子,1至7个碳原子的脂族烃基 6或7个碳原子的原子或芳族烃基,R3是H或1〜3个碳原子的脂族烃基,n是2〜5, (C)二硫化碳。

    Polybutadiene and process for producing same
    2.
    发明授权
    Polybutadiene and process for producing same 失效
    聚丁二烯及其生产方法

    公开(公告)号:US3935180A

    公开(公告)日:1976-01-27

    申请号:US393290

    申请日:1973-08-31

    IPC分类号: C08F136/06 C08D3/08 C08D1/14

    CPC分类号: C08F136/06

    摘要: A process for producing a polybutadiene is provided wherein, first, 1,3-butadiene is polymerized in the presence of a particular cis-1,4-polymerization catalyst and subsequently, the polymerization is continued in the presence of a particular 1,2-polymerization catalyst. The resulting polybutadiene is characterized as containing 2 to 40% of the 1,2-structure, the melting point of the 1,2-structure portion being 110.degree. to 215.degree.C, and containing 60 to 98% of the cis-1,4-structure and having an intrinsic viscosity [.eta.] of 0.9 to 8 in tetraline at 135.degree.C. A vulcanized product of the polybutadiene is characterized as possessing improved tear strength, flex-crack resistance and tensile strength.

    摘要翻译: 提供一种生产聚丁二烯的方法,其中首先在特定的顺式-1,4-聚合催化剂存在下聚合1,3-丁二烯,随后在特定的1,2- 聚合催化剂。 所得聚丁二烯的特征在于含有2〜40%的1,2-结构,1,2-结构部分的熔点为110〜215℃,含有60〜98%的顺式-1, 4-结构,在135℃下在四氢化萘中的特性粘度η为0.9-8。聚丁二烯的硫化产物的特征在于具有改善的撕裂强度,抗弯曲性和拉伸强度。

    Sliding bearing apparatus
    5.
    发明授权
    Sliding bearing apparatus 失效
    滑动轴承装置

    公开(公告)号:US06688769B2

    公开(公告)日:2004-02-10

    申请号:US10094996

    申请日:2002-03-12

    IPC分类号: F16L904

    摘要: A sliding bearing apparatus having a superior resistance to fretting comprising: a sliding bearing provided with a back metal layer having an inner face and a rear face, and a bearing alloy layer provided on an inner face of said back metal layer; and a housing having an inner face on which said sliding bearing is mounted, the rear face of said back metal layer and/or the inner face of said housing being provided with a coating made of a ceramic.

    摘要翻译: 一种滑动轴承装置,具有优异的耐磨性,该滑动轴承装置包括:滑动轴承,其设置有具有内表面和后表面的背金属层,以及设置在所述背金属层的内表面上的轴承合金层; 以及具有安装有所述滑动轴承的内表面的壳体,所述背金属层的背面和/或所述壳体的内表面设置有由陶瓷制成的涂层。

    Plain bearing and producing method thereof
    6.
    发明授权
    Plain bearing and producing method thereof 失效
    滑动轴承及其制造方法

    公开(公告)号:US06491437B1

    公开(公告)日:2002-12-10

    申请号:US09644303

    申请日:2000-08-23

    IPC分类号: F16C3302

    摘要: Disclosed is a plain bearing comprising a back metal, a bearing alloy layer provided on the inner surface of the back metal, an intermediate layer provided on the bearing alloy layer and an overlay provided on the intermediate layer. The bearing alloy layer has a textured uneven inner surface, comprising a number of protrusions, which has been formed by etching of the inner surface provided with a mask. A feature and a pattern of the uneven surface can be optionally and accurately formed by designing appropriately the mask. For example, the protrusions may be a form of square, circle or lozenge cross-section, or a ridge extending in an optional direction, e.g. circumferentially, perpendicularly or obliquely to the circumference. After the overlay considerably wears, there will appear a surface state in which the bearing alloy layer, the intermediate layer and the residual soft overlay in the etched recess coexist.

    摘要翻译: 公开了一种滑动轴承,其包括背面金属,设置在背面金属的内表面上的轴承合金层,设置在轴承合金层上的中间层和设置在中间层上的覆盖层。 轴承合金层具有纹理不均匀的内表面,其包括通过蚀刻具有掩模的内表面形成的多个突起。 可以通过适当地设计掩模来可选地且精确地形成不平坦表面的特征和图案。 例如,突起可以是正方形,圆形或菱形横截面的形式,或者沿任选方向延伸的脊,例如, 周向地,垂直地或倾斜地与圆周。 在覆盖层显着磨损之后,将出现表面状态,其中蚀刻凹槽中的轴承合金层,中间层和残余软覆盖层共存。

    Plain bearing
    7.
    发明授权
    Plain bearing 失效
    平面轴承

    公开(公告)号:US06382838B1

    公开(公告)日:2002-05-07

    申请号:US09661562

    申请日:2000-09-14

    IPC分类号: F16C902

    摘要: Disclosed is a plain bearing having a back metal, a bearing alloy layer and an overlay layer, in which the bearing alloy layer and the overlay layer are formed on the inner surface of the metal in this order. The inner surface of the bearing alloy is provided with circumferential broad width recesses and narrow recesses in which the overlay material is filled. The fatigue resistance and were resistance are ensured by the zone of the narrow width recesses. The plain bearing exhibits high embeddability for a foreign substance by presence of the zone of the broad width recesses.

    摘要翻译: 公开了具有背面金属,轴承合金层和覆盖层的滑动轴承,其中轴承合金层和覆盖层依次形成在金属的内表面上。 轴承合金的内表面设置有周向宽宽度的凹槽和窄填充物,其中覆盖材料被填充。 通过窄宽度凹部的区域确保耐疲劳性和电阻。 滑动轴承通过宽宽度凹部的区域的存在对外来物质具有高的嵌入性。

    N-phenyl-2,2,6,6-tetrahalocyclohexaneimine and processes for preparing
2,2,6,6-tetrahalocyclohexaneimine derivative and 2,6-dihaloaniline
derivative
    8.
    发明授权
    N-phenyl-2,2,6,6-tetrahalocyclohexaneimine and processes for preparing 2,2,6,6-tetrahalocyclohexaneimine derivative and 2,6-dihaloaniline derivative 失效
    N-苯基-2,2,6,6-四卤代环己烷亚胺及其制备2,2,6,6-四卤代环己烷衍生物和2,6-二卤代苯胺衍生物的方法

    公开(公告)号:US5001264A

    公开(公告)日:1991-03-19

    申请号:US427390

    申请日:1989-10-27

    IPC分类号: C07C251/20

    CPC分类号: C07C251/20 C07C2101/14

    摘要: A process for preparing a 2,2,6,6-tetrahalocyclohexaneimine derivative (I) which comprises reacting a 2,2,6,6-tetrahalocyclohexanone with a primary amine or ammonia in the presence of a Lewis acid, a process for preparing a 2,6-dihaloaniline derivative (II) which comprises subjecting the 2,2,6,6-tetrahalocyclohexaneimine derivative (I) to dehydrohalogenation in the presence or absence of a catalyst, and an N-phenyl-2,2,6,6-tetrahalocyclohexaneimine. According to the process of the present invention, the 2,2,6,6-tetrahalocyclohexaneimine derivative (I) can be prepared from inexpensive starting materials in high yield through a few steps. Also, the 2,6-dihaloaniline derivative (II) can be prepared from inexpensive starting materials in high yield and high purity through a few steps. Further, the N-phenyl-2,2,6,6-tetrahalocyclohexaneimine is very useful in the preparation of N-phenyl-2,6-dihaloaniline.

    N-phenyl-2,2,6,6-tetrahalocyclohexaneimine
    9.
    发明授权
    N-phenyl-2,2,6,6-tetrahalocyclohexaneimine 失效
    N-苯基-2,2,6,6-四卤代环己烷亚胺

    公开(公告)号:US4908479A

    公开(公告)日:1990-03-13

    申请号:US228134

    申请日:1988-08-03

    IPC分类号: C07C251/20

    CPC分类号: C07C251/20 C07C2101/14

    摘要: A process for preparing a 2,2,6,6-tetrahalocyclohexanimine derivative (I) which comprises reacting a 2,2,6,6-tetrahalocyclohexanone with a primary amine or ammonia in the presence of a Lewis acid, a process for preparing a 2,6-dihaloaniline derivative (II) which comprises subjecting the 2,2,6,6-tetrahalocyclohexaneimine derivative (I) to dehydrohalogenation in the presence or absence of a catalyst, and an N-phenyl-2,2,6,6-tetrahalocyclohexaneimine. According to the process of the present invention, the 2,2,6,6-tetrahalocyclohexaneimine derivative (I) can be prepared from inexpensive starting materials in high yield through a few steps. Also, the 2,6-dihaloaniline derivative (II) can be prepared from inexpensive starting materials in high yield and high purity through a few steps. Further, the N-phenyl-2,2,6,6-tetrahalocyclohexaneimine is very useful in the preparation of N-phenyl-2,6-dihaloaniline.

    Process for producing polybutadiene rubber with enhanced mechanical
strength
    10.
    发明授权
    Process for producing polybutadiene rubber with enhanced mechanical strength 失效
    具有增强机械强度的生产聚丁二烯橡胶的方法

    公开(公告)号:US4476287A

    公开(公告)日:1984-10-09

    申请号:US448232

    申请日:1982-12-09

    CPC分类号: C08F295/00 C08F136/06

    摘要: A polybutadiene rubber having an enhanced mechanical strength is produced in such a manner that the content of water in a solution of 1,3-butadiene in an inert organic solvent is controlled to 0.2 to 5 millemoles per liter of 1,3-butadiene; a first polymerization mixture is prepared from the controlled 1,3-butadiene solution, an organic aluminum compound of the formula Al R.sub.n X.sub.3-n, wherein R=C.sub.1-6 alkyl, phenyl, or cycloalkyl, X=halogen, and n=1.5-2.0, and a cobalt compound, for example, by aging a mixture of the controlled 1,3-butadiene solution with the aluminum compound for at least one minute and then by admixing the aged mixture with the cobalt compound; the first polymerization mixture is subjected to a cis-1,4-polymerization; a second polymerization comprising the resultant cis-1,4-polybutadiene, non-reacted 1,3-butadiene, the inert organic solvent, and a catalyst comprising an organic aluminum compound of the formula AlR.sub.3, a cobalt compound, and carbon disulfide is subjected to a 1,2-polymerization to produce a polybutadiene rubber consisting essentially of 5% to 30% by weight of a boiling n-hexane-insoluble fraction and 70% to 95% by weight of a boiling n-hexane-soluble fraction thereof and having an excellent mechanical strength; and after the 1,2-polymerization is shortstopped, the resultant polybutadiene rubber is isolated from the 1,2-polymerization mixture.

    摘要翻译: 制造具有增强的机械强度的聚丁二烯橡胶,使得1,3-丁二烯在惰性有机溶剂中的溶液中的水含量控制在每升1,3-丁二烯0.2至5毫摩尔; 由对照的1,3-丁二烯溶液制备第一聚合混合物,式为Al RnX 3-n的有机铝化合物,其中R = C 1-6烷基,苯基或环烷基,X =卤素,n = 1.5- 2.0和钴化合物,例如通过将受控1,3-丁二烯溶液与铝化合物的混合物老化至少1分钟,然后将老化的混合物与钴化合物混合; 将第一聚合混合物进行顺式-1,4-聚合; 包含所得顺式-1,4-聚丁二烯,未反应的1,3-丁二烯,惰性有机溶剂和包含式AlR 3的有机铝化合物,钴化合物和二硫化碳的催化剂的第二聚合物被 进行1,2-聚合以制备基本上由沸腾正己烷不溶部分的5重量%至30重量%的沸石正己烷不溶部分和70重量%至95重量%的沸腾的正己烷可溶部分组成的聚丁二烯橡胶, 具有优良的机械强度; 并且在1,2-聚合反应快速之后,从1,2-聚合混合物中分离得到的聚丁二烯橡胶。