This invention relates to an automatic batch washing machine where the potential product or products that are being cleaned includes, but is not limited to, clothes and dishes. The present invention discloses an isocyanate production process including specific steps and using a composition containing a carbamic acid ester and an aromatic hydroxy compound, as well as a composition for transfer or storage of carbamic acid ester comprising the carbamic acid ester and the specific aromatic hydroxy compound. The recess is further configured to enable the latching element to be pivoted or bent in the direction of one of the two contact elements, so that the form-fit connection between the other contact element and the associated detent is able to be released.