Attachment of optical microscope components
    1.
    发明授权
    Attachment of optical microscope components 有权
    光学显微镜部件的安装

    公开(公告)号:US09001419B2

    公开(公告)日:2015-04-07

    申请号:US13577246

    申请日:2011-02-04

    IPC分类号: G02B21/24 G02B7/14 G02B21/02

    CPC分类号: G02B7/14 G02B21/02

    摘要: A device for attaching a first optical microscope component part to a second part includes an annular receptacle attached to the second part and an annual insertion part. The annular insertion part includes outside-conical retaining projections. The receptacle includes a base ring having a retaining collar with an inside cone tapering away from the base ring and in which a lateral opening is formed, through which the insertion part can be inserted in the receptacle such that it is located on a pre-locking position in which the annular openings overlap. The insertion part and the receptacle can be moved by reciprocal rotation from the pre-locking position into a locking position in which the outside-conical retaining projections of the insertion part are seated against the inside cone of the retaining collar and press the insertion part on the base ring, whereby the insertion part is locked to the receptacle.

    摘要翻译: 用于将第一光学显微镜部件附接到第二部件的装置包括附接到第二部分的环形插座和年度插入部。 环形插入部分包括外锥形保持突起。 所述容器包括具有保持套环的基座环,所述保持套环具有与所述基座环成锥形的内锥体,并且其中形成有侧向开口,所述插入部件可以通过所述侧孔插入所述插座中,使得其位于预锁定 环形开口重叠的位置。 插入部分和插座可以通过往复旋转从预锁定位置移动到锁定位置,其中插入部分的外锥形保持突起抵靠保持环的内锥体并将插入部分按压在 基座环,由此插入部分被锁定到容器。

    Method for obtaining and reusing of oxidation catalyst in the Witten DMT
process
    2.
    发明授权
    Method for obtaining and reusing of oxidation catalyst in the Witten DMT process 失效
    在Witten DMT工艺中获得和再利用氧化催化剂的方法

    公开(公告)号:US4372875A

    公开(公告)日:1983-02-08

    申请号:US326280

    申请日:1981-12-01

    摘要: A process for effecting the recovery and use of a heavy metal oxidation catalyst from a high-boiling distillation residue obtained during the Witten process for the production of dimethyl terephthalate involves the extraction of the high-boiling distillation reside with water or dilute aqueous solution of low molecular weight aliphatic monocarboxylic acids or alcohols and recycling of the extract into the oxidation stage of the Witten process. In the extract the quantitative ratio of the sum of the amount of trimellitic acid and monomethyl ester of trimellitic acid to the amount of heavy metal catalyst is controlled to be at a value of no more than 1.8:1 and in the oxidation stage of the Witten process the catalyst concentration (c), expressed in p.p.m., is represented by the formula:c=44.multidot.(a/b)+dwherein a represents the sum of trimellitic acid and monomethyl ester of trimellitic acid, b is the amount of heavy metal oxidation catalyst within the extract, and d is in a range of from 60 to 300 p.p.m.

    摘要翻译: 在用于制备二甲基对苯二甲酸酯的Witten方法中获得的高沸点蒸馏残渣中进行重金属氧化催化剂的回收和使用的方法包括用低或低的水溶液萃取高沸点蒸馏 分子量脂肪族单羧酸或醇,并将提取物再循环到Witten过程的氧化阶段。 在提取物中,偏苯三酸和偏苯三酸的单甲酯的总量与重金属催化剂的量的量比控制在不超过1.8:1的值,并且在Witten的氧化阶段 处理以ppm表示的催化剂浓度(c)由下式表示:c = 44x(a / b)+ d其中a表示偏苯三酸和偏苯三酸单甲酯的总和,b是重金属的量 提取物内的氧化催化剂,d为60〜300ppm的范围

    ATTACHMENT OF OPTICAL MICROSCOPE COMPONENTS
    3.
    发明申请
    ATTACHMENT OF OPTICAL MICROSCOPE COMPONENTS 有权
    光学显微镜组件的附着

    公开(公告)号:US20130027768A1

    公开(公告)日:2013-01-31

    申请号:US13577246

    申请日:2011-02-04

    IPC分类号: G02B21/24

    CPC分类号: G02B7/14 G02B21/02

    摘要: A device for attaching a first optical microscope component part to a second part includes an annular receptacle attached to the second part and an annual insertion part. The annular insertion part includes outside-conical retaining projections. The receptacle includes a base ring having a retaining collar with an inside cone tapering away from the base ring and in which a lateral opening is formed, through which the insertion part can be inserted in the receptacle such that it is located on a pre-locking position in which the annular openings overlap. The insertion part and the receptacle can be moved by reciprocal rotation from the pre-locking position into a locking position in which the outside-conical retaining projections of the insertion part are seated against the inside cone of the retaining collar and press the insertion part on the base ring, whereby the insertion part is locked to the receptacle.

    摘要翻译: 用于将第一光学显微镜部件附接到第二部件的装置包括附接到第二部分的环形插座和年度插入部。 环形插入部分包括外锥形保持突起。 所述容器包括具有保持套环的基座环,所述保持套环具有与所述基座环成锥形的内锥体,并且其中形成有侧向开口,所述插入部件可以通过所述侧孔插入所述插座中,使得其位于预锁定 环形开口重叠的位置。 插入部分和插座可以通过往复旋转从预锁定位置移动到锁定位置,其中插入部分的外锥形保持突起抵靠保持环的内锥体并将插入部分按压在 基座环,由此插入部分被锁定到容器。

    Process for the preparation of dimethyl terephthalate
    5.
    发明授权
    Process for the preparation of dimethyl terephthalate 失效
    制备对苯二甲酸二甲酯的方法

    公开(公告)号:US4126755A

    公开(公告)日:1978-11-21

    申请号:US396468

    申请日:1973-09-12

    CPC分类号: C07C51/265

    摘要: A process for producing dimethyl terephthalate from high-boiling tarry residues from the combined oxidation of p-xylene and p-toluate in the liquid phase, esterification of the resulting acids with methanol and separation of the resulting dimethyl terephthalate which include the steps of subjecting the high-boiling residues to treatment with methanol at temperatures above 250.degree. C. and thereafter separating the resulting dimethyl terephthalate in accordance with conventional separation techniques.

    摘要翻译: 在液相中从对二甲苯和对甲苯甲酸酯的组合氧化的高沸点焦油残留物中生产对苯二甲酸二甲酯的方法,所得酸与甲醇的酯化和所得到的对苯二甲酸二甲酯的分离,包括以下步骤: 高沸点残余物在高于250℃的温度下用甲醇处理,然后根据常规分离技术分离所得的对苯二甲酸二甲酯。

    Process for the recovery of dimethyl terephthalate and of intermediates
from the dimethyl terephthalate manufacture
    6.
    发明授权
    Process for the recovery of dimethyl terephthalate and of intermediates from the dimethyl terephthalate manufacture 失效
    从对苯二甲酸二甲酯生产中回收对苯二甲酸二甲酯和中间体的方法

    公开(公告)号:US4092481A

    公开(公告)日:1978-05-30

    申请号:US585760

    申请日:1975-06-10

    申请人: Heinrich Bunger

    发明人: Heinrich Bunger

    IPC分类号: C07C67/48 C07C69/82

    CPC分类号: C07C69/82 C07C67/54

    摘要: A process for the production of dimethyl terephthalate and intermediate products of the dimethyl terephthalate manufacture from the high-boiling by-products obtained during the air oxidation of p-xylene and methyl p-toluate in the liquid phase, subsequent esterification of the thus-formed acids, and separation of the thus-produced esters, which comprises treating said high-boiling by-products with methanol at an elevated temperature and then separating the resultant product rich in dimethyl terephthalate by distillation with the addition of a carrier gas or a carrier vapor.

    摘要翻译: 由对二甲苯和对甲苯甲酸甲酯在液相中获得的高沸点副产物生产对苯二甲酸二甲酯和对苯二甲酸二甲酯的中间产物的方法,随后酯化如此形成 酸,以及分离如此生产的酯,其包括在升高的温度下用甲醇处理所述高沸点副产物,然后通过加入载气或载体蒸气通过蒸馏分离富含对苯二甲酸二甲酯的所得产物 。