Tetrakis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionyloxymethyl]methane
having a novel crystal structure and process for production thereof
    2.
    发明授权
    Tetrakis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionyloxymethyl]methane having a novel crystal structure and process for production thereof 失效
    具有新晶体结构的四[3-(3,5-二叔丁基-4-羟基苯基)丙酰氧甲基]甲烷及其制备方法

    公开(公告)号:US4405807A

    公开(公告)日:1983-09-20

    申请号:US224831

    申请日:1981-01-13

    IPC分类号: C08K5/134 C07C69/76

    CPC分类号: C08K5/1345

    摘要: Novel tetrakis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionyloxymethyl)methane having a novel crystal structure characterized by the fact that its X-ray diffraction pattern obtained by X-ray analysis using Cu-K.sub..alpha. rays shown a sharp peak at a diffraction angle 2.theta.=10.90.degree.. The above compound can be prepared by (a) transesterifying methyl or ethyl 3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate with pentaerythritol in the presence of a compound of the formula ##STR1## wherein R.sub.1 and R.sub.2 each represent an alkyl group having 1 to 6 carbon atoms,(b) treating the resulting tetrakis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionyloxymethyl)methane with a lower alkanol capable of forming a molecular adduct compound therewith to convert it into the corresponding molecular adduct compound, and (c) recrystallizing the molecular adduct compound from ethanol as a solvent.

    摘要翻译: 具有新型晶体结构的新型四[3-(3,5-二叔丁基-4-羟基苯基)丙酰氧基甲基)甲烷的特征在于其X射线衍射图通过使用Cu-Kα 射线在衍射角2θ= 10.90°处显示出尖锐的峰。 上述化合物可以通过(a)3-(3,5-二叔丁基-4-羟基苯基)丙酸乙酯与季戊四醇在式Ia化合物存在下酯交换反应来制备,其中R1和R2 各自表示具有1至6个碳原子的烷基,(b)用能够形成分子加合物的低级链烷醇处理得到的四[3-(3,5-二叔丁基-4-羟基苯基)丙酰氧基甲基)甲烷 与其混合以将其转化成相应的分子加合物化合物,和(c)从乙醇中重结晶分子加合物作为溶剂。

    Muffler
    3.
    发明授权
    Muffler 失效
    围巾

    公开(公告)号:US4132286A

    公开(公告)日:1979-01-02

    申请号:US827548

    申请日:1977-08-25

    摘要: A muffler comprising: an upper case provided at the opposite ends with semi-cylindrical inlet and outlet sections respectively and having an outwardly raised central portion and an integral flange-like edge portion; a lower case joined at a flange-like edge portion to that of said upper case and substantially symmetrical with said upper case with respect to the underside thereof; an exhaust inlet tube forming member having at least a semi-cylindrical inlet section inserted in a cylindrical inlet formed by the inlet sections of said upper and lower cases joined together and a gutter-like guide section connected to said inlet section and being joined to said upper case, lower case or both of them, said forming member being provided adjacent to an end thereof with a perforated portion; and an exhaust outlet tube forming member having at least a semi-cylindrical outlet section fitted in a cylindrical outlet formed by the outlet sections of said upper and lower cases and a gutter-like guide section connected to said outlet section and being joined to said upper case, lower case or both of them; the exhaust inlet and outlet tubes formed in this way within the muffler body being communicated with each other through an exhaust gas passage formed between the outer surface of said individual component parts and the inner surface of said case and also through said passage, the end of said outlet tube being positioned behind the leading end of said inlet tube.

    摘要翻译: 一种消音器,包括:上壳体,其相对端分别设置有半圆柱形入口和出口部分,并具有向外的中心部分和整体的凸缘状边缘部分; 下壳体在法兰状边缘部分处连接到所述上壳体的边缘部分并且与所述上壳体相对于其下侧基本上对称; 排气入口管形成构件,其至少具有插入由连接在一起的所述上壳体和下壳体的入口部分形成的圆柱形入口中的半圆柱形入口部分,以及连接到所述入口部分并且连接到所述入口管形成构件的沟槽状引导部分, 上壳体,下壳体或两者,所述成形构件与其端部相邻地设置有穿孔部分; 以及排气出口管形成构件,其具有装配在由所述上壳体和下壳体的出口部分形成的圆柱形出口中的至少半圆柱形出口部分和连接到所述出口部分并且连接到所述上部和下部壳体的槽形引导部分 案件,小写或两者; 在消声器本体内以这种方式形成的排气入口和出口管通过形成在所述各个部件的外表面和所述壳体的内表面之间的废气通道彼此连通,并且还通过所述通道, 所述出口管位于所述入口管的前端之后。

    Cap for fuel tank
    4.
    发明授权
    Cap for fuel tank 失效
    燃油箱盖

    公开(公告)号:US4579247A

    公开(公告)日:1986-04-01

    申请号:US509405

    申请日:1983-06-30

    IPC分类号: B60K15/04 B65D41/04

    CPC分类号: B60K15/0406 Y10S220/33

    摘要: A cap for a fuel tank has a cap body for screwing into the filler neck of the fuel tank with an "O" ring interposed therebetween, and a lid member for mating to the cap body, both the lid member and the cap body having coacting structure for mutual interengagement to maintain the lid member normally mated to the cap body but separable in break-away relationship from the cap body to leave the cap body intact within the filler neck upon application of external force, such as through collision, to the lid member. The coacting structure may take the form of engaging recesses, holes or grooves on one member and of engaging projections, tabs or pins on the other member.

    摘要翻译: 用于燃料箱的盖具有用于旋入燃料箱的填充口的帽体,其间插入有“O”环,以及用于与盖体配合的盖构件,盖构件和具有共同作用的盖体 用于相互相互接合的结构,以保持盖构件通常与盖体配合,但是可以与盖体脱离的关系分离,以在施加外力(例如通过碰撞)到盖子时将盖体完好地保持在填充物颈部内 会员。 共同作用结构可以采取在一个构件上接合凹槽,孔或凹槽的形式,并且与另一个构件上的突起,翼片或销接合。