Pyrrolotriazolopyrimidine derivatives and process for the preparation
thereof
    3.
    发明授权
    Pyrrolotriazolopyrimidine derivatives and process for the preparation thereof 失效
    吡咯并三唑并嘧啶衍生物及其制备方法

    公开(公告)号:US4007189A

    公开(公告)日:1977-02-08

    申请号:US683055

    申请日:1976-05-04

    CPC分类号: C07D487/14 Y10S514/929

    摘要: Pyrrolotriazolopyrimidine derivatives having the formula ##STR1## wherein R.sup.1 represents hydrogen atom or an alkyl group having from 1 to 4 carbon atoms and R.sup.2 represents an alkyl group having from 1 to 4 carbon atoms, a cycloalkyl group having from 5 to 8 carbon atoms, a phenyl group optionally substituted with one or more halogen atoms or a phenylalkyl group having the formula ##STR2## IN WHICH R.sup.3 represents hydrogen atom or an alkyl group having from 1 to 4 carbon atoms, R.sup.4 represents halogen atom, an alkyl group having from 1 to 4 carbon atoms or an alkoxy group having from 1 to 4 carbon atoms, m represents an integer from 0 to 2 and n represents an integer from 0 to 3, and pharmacologically acceptable salts thereof. The compounds are useful as vasodilating or hypotensive agents and may be prepared by reacting triazolopyrimidine derivatives having the formula ##STR3## wherein X.sup.1 and X.sup.2 may be the same or different and each represents a halogen atom and R.sup.1 has the same meaning as defined above with an amine having the formulaR.sup.2 - NH.sub.2wherein R.sup.2 has the same meaning as defined above.

    摘要翻译: 具有式的吡咯并三唑并嘧啶衍生物,其中R 1表示氢原子或具有1至4个碳原子的烷基,R 2表示具有1至4个碳原子的烷基,具有5至8个碳原子的环烷基, 任选被一个或多个卤素原子取代的苯基或具有下式的苯基烷基:其中R 3表示氢原子或具有1至4个碳原子的烷基,R 4表示卤素原子,具有1至 4个碳原子或1〜4个碳原子的烷氧基,m表示0〜2的整数,n表示0〜3的整数,以及其药理学上可接受的盐。 这些化合物可用作血管扩张剂或降血压剂,并且可以通过使具有式(I)的三唑并嘧啶衍生物反应来制备,其中X 1和X 2可以相同或不同,并且各自表示卤素原子,并且R 1具有与上述相同的含义, 具有式R2-NH2的胺,其中R2具有与上述相同的含义。

    Continuous casting method, continuous casting apparatus and continuously cast steel slab
    4.
    发明授权
    Continuous casting method, continuous casting apparatus and continuously cast steel slab 有权
    连铸法,连续铸造设备和连续铸钢板

    公开(公告)号:US07086450B2

    公开(公告)日:2006-08-08

    申请号:US10404087

    申请日:2003-04-02

    IPC分类号: B22D11/00 B22D11/12

    CPC分类号: B22D11/1206 B22D11/00

    摘要: A continuous casting method is demonstrated, in which a slab including a liquid core 11 is bulged and then reduced in its thickness with a reduction roll pair 7, in which case, the uppermost surface of the lower roll 7b in the reduction roll pair 7 is located at a higher level than the lower pass line 9 of the slab. With this method, the slab can be efficiently reduced in its thickness without any loss of reduction force and the generation of segregation can be suppressed at the center area of the slab in the thickness direction.A continuous casting apparatus according to the invention is suitable for carrying out the continuous casting method according to the invention.A slab produced by the method according to the invention has good quality, since the segregation at the center area can be improved over the entire width in which the liquid core 11 is included.

    摘要翻译: 展示了连续铸造方法,其中包括液芯11的板坯被膨胀,然后用还原辊对7减小其厚度,在这种情况下,还原辊对7中的下辊7b的最上表面 位于比板的下通道9更高的水平。 通过这种方法,可以有效地减少板坯的厚度,而不会产生减小力的损失,并且可以在厚度方向上在板坯的中心区域抑制偏析的产生。 根据本发明的连续铸造设备适用于实施根据本发明的连续铸造方法。 通过本发明的方法生产的板坯具有良好的质量,因为在包括液芯11的整个宽度上可以改善中心区域的偏析。

    Mold powder for continuous casting and method of continuous casting
    6.
    发明授权
    Mold powder for continuous casting and method of continuous casting 有权
    用于连铸的模具粉末和连续铸造方法

    公开(公告)号:US6125919A

    公开(公告)日:2000-10-03

    申请号:US134893

    申请日:1998-08-17

    摘要: A mold powder for continuous steel casting, contains CaO, SiO.sub.2 and fluoride as the main components. The ratio by weight of CaO', represented by the following equation, to SiO.sub.2 is 0.9-2.8 and the CaF.sub.2 content is about 5-60 wt. %. The powder contains Na.sub.2 O in an amount of 0-25 wt. % and C in an amount of 0-10 wt. %.CaO'=T.CaO-F.times.(56/38)wherein T.CaO represents the total Ca content in the mold powder as converted to CaO(wt. %) and F represents the total F content in the mold powder(wt. %). The powder is used in a method for continuous steel casting.

    摘要翻译: 用于连续铸钢的模具粉末,含有CaO,SiO2和氟化物作为主要成分。 由下式表示的CaO'与SiO 2的重量比为0.9-2.8,CaF 2含量为约5-60重量%。 %。 粉末含有0-25重量%的Na 2 O。 %和C为0-10wt。 %.CaO'= T.CaO-Fx(56/38)其中T.CaO表示转化为CaO(wt。%)的模具粉末中的总Ca含量,F表示模具粉末中的总F含量(wt 。%)。 该粉末用于连续铸钢的方法中。

    Continuous casting method and apparatus thereof
    7.
    发明授权
    Continuous casting method and apparatus thereof 失效
    连铸方法及其装置

    公开(公告)号:US6102101A

    公开(公告)日:2000-08-15

    申请号:US849868

    申请日:1997-06-18

    CPC分类号: B22D11/1206

    摘要: A continuous casting method and apparatus therefor wherein a reaction force/reduction controller selects a pivot reduction roll such that the thickness of the solidified shell of the cast slab having a liquid core is equal to the target thickness T.sub.ref, and calculates a difference between a thickness T.sub.in of the cast slab having a liquid core at the inlet of the reduction roll zone PRT and the target thickness T.sub.ref, i.e., .DELTA.T. The resulting value of .DELTA.T, i.e., a target reduction is provided to the reduction controllers 2 of the pivot reduction roll. The reaction force/reduction controller 1 assigns target reductions 1/3 .DELTA.T and 2/3 .DELTA.T to the two reduction rolls upstream of the pivot reduction roll. The reaction force/reduction controller 1 calculates a target pressure (P.sub.i +.alpha.) on the basis of the selected value for .alpha., and the resulting target pressure (P.sub.i +.alpha.) is provided to each of the reduction controllers 2 of the reduction rolls, downstream of the pivot reduction roll.

    摘要翻译: PCT No.PCT / JP96 / 02983第 371日期:1997年6月18日 102(e)日期1996年6月18日PCT提交1996年10月15日PCT公布。 第WO97 / 14522号公报 日期1997年04月24日一种连续铸造方法及其设备,其中反作用力/还原控制器选择枢转压缩辊,使得具有液芯的铸坯的凝固壳的厚度等于目标厚度Tref,并计算 在还原辊区域PRT的入口处具有液芯的铸坯的厚度Tin与目标厚度Tref即DELTA T之间的差异。将DELTA T的结果值即目标减小值提供给 减速辊2的减速控制器2。 反作用力/还原控制器1将目标减速度+ E,fra 1/3 + EE DELTA T和+ E,fra 2/3 + EE DELTA T分配给枢转减速辊上游的两个还原辊。 反作用力/还原控制器1基于所选择的α值来计算目标压力(Pi +α),并且将所得到的目标压力(Pi +α)提供给还原辊的每个减速控制器2, 枢轴减速辊。