公开(公告)号：US20050165247A1

公开(公告)日：2005-07-28

申请号：US11083746

申请日：2005-03-17

Applicant: Reinhard Langer ,  Lars Rodefeld ,  Karl Neumann

Inventor： Reinhard Langer ,  Lars Rodefeld ,  Karl Neumann

IPC: C07C201/12 ,  C07C205/57 ,  C07C205/58 ,  C07C303/22 ,  C07C309/58 ,  C07C25/53

CPC classification number: C07C303/22 ,  C07C201/12 ,  C07C309/58 ,  C07C205/57 ,  C07C205/58 ,  C07C205/61

Abstract: The present invention relates to the preparation of nitrobenzoic acids by oxidizing particular nitrotoluenes, nitrobenzyl alcohols, esters and/or ethers in the presence of nitric acid at elevated temperature and elevated pressure. It has been found that the particular nitrotoluenes, nitrobenyzl alcohols, esters and/or ethers may be oxidized particularly reliably and in high yields using nitric acid to the benzoic acid derivatives when they are metered into the nitric acid.

Abstract translation: 本发明涉及通过在高温和高压下在硝酸存在下氧化特定的硝基甲苯，硝基苄醇，酯和/或醚来制备硝基苯甲酸。 已经发现，当特定的硝基甲苯，硝基苯甲醇，酯和/或醚可以特别可靠地被氧化并且当它们被计入硝酸时，使用硝酸对苯甲酸衍生物的高收率地被氧化。

公开(公告)号：US4396511A

公开(公告)日：1983-08-02

申请号：US206306

申请日：1980-11-12

Applicant: Karl Neumann

Inventor： Karl Neumann

IPC: E02B5/08 ,  B08B1/04 ,  E02B8/02 ,  B01D35/08

CPC classification number: E02B8/026

Abstract: A boom is mounted for pivotal movement about the center from which the arcuate shape of a filter screen is struck and a cleaner is pivoted to the free end of the boom. A single reversible drive unit is operatively connected to the cleaner for exerting a force thereto to tilt the cleaner toward a cleaning position. A stop operatively and rigidly connects the cleaner to the boom to transmit force from the cleaner to the boom as a pivotal force only after the cleaner is tilted to the cleaning position to thus rigidly connect the drive unit and cleaner to the boom.

Abstract translation: 安装悬臂用于围绕中心的枢转运动，过滤网的弧形形状从该中心被撞击，并且清洁器枢转到悬臂的自由端。 单个可逆驱动单元可操作地连接到清洁器，用于施加力以将清洁器倾斜到清洁位置。 在清洁器倾斜到清洁位置之后，止动器可操作地并且刚性地将清洁器连接到起重臂以将力从清洁器传递到动臂作为枢转力，从而将驱动单元和清洁器刚性地连接到起重臂。