Rosin description

Balsams or compounde which contain, besides a volatile oil and an acid rosin, cinnamic or benzoic acids, or some substances capable of prodneing them. It will be unnecessary to follow the description of the subjects coming under this class here, as they have been already described at some length.—See Balsams,... 

In contrast to the large variety of averages and measures of dispersion prevalent in the literature, the number of basic distributions which have proved useful is relatively small. In droplet statistics, the best known distributions include the normal, log-normal, Rosin-Rammler, and Nukiyama-Tanasawa distributions. The normal distribution often gives a satisfactory representation where the droplets are produced by condensation, precipitation, or by chemical processes. The log-normal and Nukiyama-Tanasawa distributions often yield adequate descriptions of the drop-size distributions of sprays produced by atomization of liquids in air. The Rosin-Rammler distribution has been successfully applied to size distribution resulting from grinding, and may sometimes be fitted to data that are too skewed to be fitted with a log-normal distribution. 

Physical Description Pyrolysis products of rosin core solder include acetone, aliphatic aldehydes, methyl alcohol, methane, ethane, various abietic acids (the major components of rosin), CO CO2. ... 

Insofar as space is available, renewable monomers usable for polymer synthesis are reviewed. This review, even though quite long, is not perfectly comprehensive, because large numbers of renewable monomers have been found while I have been seeking references. For examples, rosin derivatives, amino acids, and many intermediate products from metabolic pathways of sugar, fatty acid, and proteins are not included. For the same reason, detailed descriptions about the synthesis and properties of each polymer is not included. 

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