Technical transfer time

V. TECHNICAL TRANSFER TIME LINE/PROJECT PLAN... 

A small rotary press is most likely used when the initial formulation and process is developed at small scale. However, a large rotary press, used in a production area, may have significant differences in the number of stations, dwell time, and compression speed compared with smaller compression machines. Thus, early formulation design should consider the performance requirements of commercial production. Compaction simulators provide a useful tool able to reproduce the punch speeds of production machines and require only small quantities of powder blends for testing.86 The simulators can play an important role in formulation and process development and can also facilitate the technical transfer from development to commercialization. 

Since this chapter deals with analyzing samples taken during a unit operation within a processing step, we will first spend time discussing a typical processing step and how we go about determining what, when, and how we test the samples, followed by the technical transfer of these test methods to a production facility. 

The above-mentioned targets refer to general advantages of micro reactors [42, 80, 100, 114, 119]. Enhanced transfer and better controlled residence time improve conversion and selectivity. The tools have small internal volumes, allowing one to generate flexibly a multitude of samples in serial or parallel fashion. Synthesis can be combined with a multi-step procedure. The economy of micro-reactor processes has not really been analyzed so far however, it is clear that as laboratory tools they allow in a number of cases technical expenditure, personnel and costs to be reduced. 

This expanded view of task automation includes new capabilities in the the traditional area of instrument automation and in the somewhat newer related field of robotics. In addition it includes a number of functions which are not new to the office and business environment but have only recently become readily available in the laboratory. These are tools such as data base management, scientific text processing, and electronic mail and document transfer. One way to improve technical productivity Is by giving the scientist more time to do science. This can be accomplished through improved efficiency In the office, communication, and information retrieval functions which must be performed as well as by allowing science to be done In new and more efficient ways through the use of computers. 

An initial number of stations was determined by an analysis of the recipes. Within the recipes, sub-sequences of unit operations were identified which must be processed without waiting time or in parallel. The remaining unit operations were distributed on existing or new stations, so that the utilization of the stations was approximately evenly distributed and subsequent unit operations could be processed at one station. By this allocation the number of vessel transfers was minimized. An overview on the allocation of technical functions to the stations in the basic configuration is listed in Table 3.1. The numbers of the stations correspond to the labelling of the stations in Figure 3.5. 

The distillate from the steam distillation is twice shaken with not too much ether, and the ethereal extract, if necessary after concentration, is transferred to a wide-mouthed bottle, into which technical sodium bisulphite solution is poured in small portions with stirring (a glass rod is used) so that the aldehyde addition compound formed sets to a thick paste. The bottle is then stoppered and vigorously shaken the stopper is removed from time to time until all the benzaldehyde has entered into combination. (Odour ) The paste is now filtered with suction, and the solid on the funnel, after washing with ether, is at once decomposed by mixing it with an excess of sodium carbonate solution the liberated aldehyde is removed without delay by steam distillation. The distillate is extracted with ether, the extract is dried over a little calcium chloride, the ether is removed by distillation, and the benzaldehyde which remains is likewise distilled. Boiling point 179°. Yield 35-40 g. (70 per cent of the theoretical). 

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