METHOD FOR PRODUCING BIPHENYLTETRACARBOXYLIC ACID TETRAESTER
    2.
    发明申请
    METHOD FOR PRODUCING BIPHENYLTETRACARBOXYLIC ACID TETRAESTER 有权
    生产苯二甲酸丁酯酸酯的方法

    公开(公告)号:US20110137069A1

    公开(公告)日:2011-06-09

    申请号:US13057600

    申请日:2009-08-06

    IPC分类号: C07C67/00

    CPC分类号: C07C67/343 C07C69/76

    摘要: Disclosed is a method for producing a biphenyltetracarboxylic acid ester by oxidative coupling a phthalic acid ester by using a catalyst comprising at least a palladium salt, a copper salt and a β-dicarbonyl compound in the presence of a molecular oxygen, wherein the β-dicarbonyl compound is supplied into a reaction mixture liquid intermittently at an interval of less than 30 minutes, or continuously. This method allows, in particular, the selective and economical production of an asymmetric biphenyltetracarboxylic acid tetraester such as 2,3,3′,4′-biphenyltetracarboxylic acid tetraester.

    摘要翻译: 公开了一种通过在分子氧存在下使用至少包含钯盐,铜盐和对 - 二羰基化合物的催化剂氧化偶合邻苯二甲酸酯来制备联苯四羧酸酯的方法,其中, 二羰基化合物间歇地以小于30分钟的间隔或连续地供给到反应混合物液体中。 该方法特别是选择性和经济地生产不对称联苯四羧酸四酯如2,3,3',4'-联苯四羧酸四酯。

    Backpack Strap Attaching Structure
    3.
    发明申请
    Backpack Strap Attaching Structure 审中-公开
    背包表带附件结构

    公开(公告)号:US20120325872A1

    公开(公告)日:2012-12-27

    申请号:US13528362

    申请日:2012-06-20

    IPC分类号: A45F3/08 A45F3/14

    CPC分类号: A45F3/10 A45F3/047 A45F3/12

    摘要: A backpack strap includes a strap main body, an upper end of which is connected to a backpack frame, a pad attached to the strap main body on a user side, and a contact state holding unit holding an upper end of the pad in contact with the backpack frame. Upper portions of the strap main body and pad are spaced apart from each other by a specified distance. The upper end of the pad has a shape and a strength that is, when contacting the backpack frame, able to prevent the backpack strap from falling sideways. Due to a tensile force of the upper portion of the strap main body and a stiffness of the upper portion of the pad, the upper portion of the pad is held in a projecting state with the upper end of the pad acting as a support point.

    摘要翻译: 背包带包括带主体,其上端连接到背包框架,在使用者侧附接到带主体的垫,以及接触状态保持单元,其保持垫的上端与 背包框架。 带主体和垫的上部彼此间隔一定距离。 垫的上端具有与背包框架接触时的形状和强度,能够防止背包带横向落下。 由于带主体的上部的拉伸力和垫的上部的刚度,衬垫的上部保持在突出状态,其中衬垫的上端用作支撑点。

    Method for producing biphenyltetracarboxylic acid tetraester
    4.
    发明授权
    Method for producing biphenyltetracarboxylic acid tetraester 有权
    联苯四羧酸四酯的制备方法

    公开(公告)号:US08541615B2

    公开(公告)日:2013-09-24

    申请号:US13057600

    申请日:2009-08-06

    IPC分类号: C07C69/604

    CPC分类号: C07C67/343 C07C69/76

    摘要: Disclosed is a method for producing a biphenyltetracarboxylic acid ester by oxidative coupling a phthalic acid ester by using a catalyst comprising at least a palladium salt, a copper salt and a β-dicarbonyl compound in the presence of a molecular oxygen, wherein the β-dicarbonyl compound is supplied into a reaction mixture liquid intermittently at an interval of less than 30 minutes, or continuously. This method allows, in particular, the selective and economical production of an asymmetric biphenyltetracarboxylic acid tetraester such as 2,3,3′,4′-biphenyltetracarboxylic acid tetraester.

    摘要翻译: 公开了一种通过在分子氧存在下使用至少包含钯盐,铜盐和β-二羰基化合物的催化剂氧化偶联邻苯二甲酸酯来制备联苯四羧酸酯的方法,其中β-二羰基 将化合物间歇地以小于30分钟的间隔或连续地供给到反应混合物液体中。 该方法特别是选择性和经济地生产不对称联苯四羧酸四酯如2,3,3',4'-联苯四羧酸四酯。

    Pipe joint structure
    5.
    发明申请
    Pipe joint structure 审中-公开
    管接头结构

    公开(公告)号:US20060022465A1

    公开(公告)日:2006-02-02

    申请号:US11192462

    申请日:2005-07-26

    IPC分类号: F16L21/00

    摘要: There is provided a pipe joint structure wherein a proximal insert portion (20a) of an attachment pipe (20) is inserted into and secured to a base pipe (12). This pipe joint structure comprises: a cylindrical rotational operating member (30) rotatably and externally fitted on the base pipe; and a pin-shaped projection (25) which is radially protruded from the proximal insert portion of the attachment pipe; wherein the rotational operating member is provided, on an inner circumferential surface thereof, with a spiral pulling/pushing groove (35) enabling the pin-shaped projection to be introduced therein through a cut-out portion (16) formed at a distal portion (12a) of the base pipe, thereby enabling the attachment pipe to be pulled into the base pipe through the displacement of the pin-shaped projection along the groove as the rotational operating member is rotated in one direction and enabling the attachment pipe to be pushed out of the base pipe through the displacement of the pin-shaped projection along the groove as the rotational operating member is rotated in the opposite direction.

    摘要翻译: 提供了一种管接头结构,其中连接管(20)的近侧插入部分(20a)插入并固定到基管(12)上。 该管接头结构包括:可旋转并外部装配在基管上的圆筒形旋转操作构件(30) 以及从安装管的近侧插入部分径向突出的销状突起(25); 其中所述旋转操作构件在其内周表面上设置有螺旋拉/推槽(35),其能够通过形成在远端部分(16)处的切口部分(16)将所述销状突起引入其中, 如图12(a)所示,从而当旋转操作构件沿一个方向旋转并且能够使安装管被推动时,能够通过沿着凹槽的销状突起的位移将连接管拉入基管中 通过当旋转操作构件沿相反方向旋转时通过销形突起沿着凹槽的位移而离开基管。