摘要:
The connector includes a connector housing having two terminal fittings and terminal receiving chambers for receiving the terminal fittings, and a spacer 4 to be inserted into the connector housing through an opening. A receptacle for inserting an unlocking jig is formed on the spacer. The receptacle is opened at an outer wall of the spacer and a boundary wall to the connector housing 3. The receptacle is disposed in a manner not to spread across two terminal-receiving chambers. The receptacle communicates with one of the terminal-receiving chambers. A block of a main body of the spacer blocks a path between the receptacle and the other terminal-receiving chamber.
摘要:
The connector includes a connector housing having two terminal fittings and terminal receiving chambers for receiving the terminal fittings, and a spacer 4 to be inserted into the connector housing through an opening. A receptacle for inserting an unlocking jig is formed on the spacer. The receptacle is opened at an outer wall of the spacer and a boundary wall to the connector housing 3. The receptacle is disposed in a manner not to spread across two terminal-receiving chambers. The receptacle communicates with one of the terminal-receiving chambers. A block of a main body of the spacer blocks a path between the receptacle and the other terminal-receiving chamber.
摘要:
A process for producing dichloroacetaldehyde hydrate together with chloral from acetaldehyde or para-aldehyde. The process comprises a step of chlorinating acetaldehyde or para-aldehyde to obtain a chlorinated solution containing dichloroacetaldehyde as a major component, a step of distilling this chlorinated solution to obtain a distillate having a boiling point of 90.degree.-100.degree. C. and containing 50% or more of dichloroacetaldehyde, a step of adding water to this distillate, crystallizing dichloroacetaldehyde hydrate, and separating the crystals, and a step of chlorinating the remaining aldehyde components into chloral. The process enables dichloroacetaldehyde hydrate to be separated at a high purity and the raw materials to be utilized efficiently.
摘要:
A process for manufacturing monochloroacetaldehyde trimer and chloral together by effectively utilizing a raw material acetaldehyde or para-aldehyde. The process comprises a step of chlorinating acetaldehyde or para-aldehyde to produce a chlorinated liquid of which the major component is monochloroacetaldehyde, a step comprising adding chloral to said chlorinated liquid and distilling the mixture to obtain a fraction of which the major components are monochloroacetaldehyde and chloral, a step of trimerizing monochloroacetaldehyde by reacting said fraction in the presence of a trimerization catalyst and separating the MCA trimer by filtration, and a step of chlorinating other fractions from said distillation step and the filtrate from said trimerization step to produce chloral. According to this process all raw material aldehydes and components derived from aldehydes which have not been consumed for the production of MCA trimer can be easily converted into chloral which is useful as an industrial chemical. The process is also free from the problem of the waste water treatment.
摘要:
In a process for preparing p-dichlorobenzene by nuclear chlorination of benzene and/or chlorobenzene as the starting material with chlorine molecules, chlorination is carried out using aluminum chloride in an amount of 0.1–3 millimols per mol of the starting material and phenothiazines such as 10H-phenothiazine-10-carboxylic acid phenyl ester in an amount of 0.1–0.9 mols per mol of aluminum chloride so as to be a chlorination degree in a range of 1.2–2.5, by which p-dichlorobenzene can be obtained in a high para-selectivity and a short reaction time.
摘要:
A process for manufacturing a trimer of a low aliphatic aldehyde having 2-5 carbon atoms and the chlorinated 2-position is disclosed. The process comprises cyclically trimerizing said aliphatic aldehyde with chlorinated 2-position in the presence of a catalyst selected from the group consisting of metallic tin, metallic zinc, zeolite, and Lewis acids. It ensures easy separation of the catalyst from the target trimer and a high yield of the trimer. In addition, the unreacted raw material can be easily recovered.
摘要:
A navigation apparatus is disclosed comprising update functions to update nationwide updated version map data using route-specific update data, and to update the nationwide updated version map data to the next nationwide updated version map data using nationwide update data. A map update processing portion of this navigation apparatus performs updates of map data in the background of navigation control, gives priority to update processing using the route-specific update data over update processing using the nationwide update data, and, if map files to be updated using route-specific update files included in the route-specific update data have not been updated using the nationwide update data, performs updates using the nationwide update data, and then performs updates using route-specific update files.
摘要:
In a process for preparing p-dichlorobenzene by nuclear chlorination of benzene and/or chlorobenzene as the starting material with chlorine molecules, chlorination is carried out using aluminum chloride in an amount of 0.1-3 millimols per mol of the starting material and phenothiazines such as 10H-phenothiazine-10-carboxylic acid phenyl ester in an amount of 0.1-0.9 mols per mol of aluminum chloride so as to be a chlorination degree in a range of 1.2-2.5, by which p-dichlorobenzene can be obtained in a high para-selectivity and a short reaction time.
摘要:
A method for producing high purity chloroaldehyde monomers at a high yield by depolymerization of a chloroaldehyde cyclic trimer represented by the following formula, ##STR1## wherein R is a hydrogen atom, methyl group, or an ethyl group. The depolymerization reaction can be carried out in the presence of activated clay. Said chloroaldehyde cyclic trimer can be stored in a stable manner and chloroaldehyde monomers obtained by the depolymerization can be used as are as a raw material for the synthetic reaction of chloroaldehyde derivatives.
摘要:
A process of producing a high-pure dichloroacetaldehyde trimer with high yield by cyclodehydrating dichloroacetaldehyde hydrate in the presence of concentrated sulfuric acid.