The author prepared CH3(CH2)3CHCH2CH2CO _??_ from CH2=CH (CH2)5COOH. The raw material is obtained from the oil after electrolytic oxidation of CH3OOC(CH2)7COOK and contains CH3(CH2)6COOH. Treatment of the mixture of two acids with conc. H2SO4 results in a shift in the double bond of CH2=CH(CH2)5COOH until it reaches beta and gamma position, and this is followed by cyclization to the lactone. It posesses coconut like odor and is one of useful flavoring materials. At the same time, CH3(CH2)6COOH is recovered in this procedure and two components are separated effectively.
The oil resulting after electrolytic oxidation of MeOCO(CH2)7COOK is divided into three fractions by vacuum distillation. The author found that the fraction distilling off at by 90-130°C/5mmHg, was mainly composed of OHC(CH2)6COOCH3 and HO(CH2)7COOCH3, after taking such measures as separation of components, measurement of their physical and chemical constants, preparation of their derivatives and so on. The relative amount of these fractions in the oil depends on pH and the concentration of the solution of MreOCO(CH2)7COOK.
Various conditions for manufacturing viscous and colourless blown safflower and castor oils were studied by applying statistical procedure. And some properties of reaction products and their applications for nitrocellulose lacquer were discussed. The results are summarized as follows : On viscosity increase, air contacting actions were most effective, but its blow rate was less, and both temperature and catalyzers effected much on colouring. Rate of increase in viscosity was calculated by the equation lnη/η0=Kt, and activation energy of safflower oil was 6.3kcal/mol. From the infrared absorption spectral data, trans-trans conjugated diene and isolated trans double bond were found, and C8F1 or C8, C9F1, C11 or C11F1, C11F2 or C12 and C17 acids were found from petroleum ether extracts of the blown safflower oils by gas-liquid chromatography. The film properties of nitrocellulose lacquer containing the blown oil as plasticizer were compared with that of castor oil modified alkyd resin. It is observed that the former has better flexiblility, although the latter has better gloss than the former. The suitable content of blown oil in nitrocellulose lacquer film was found to be 3040%.
In the previous reports, the effects of inorganic builders, surface activities and sorption on fabrics, on detergency of nonionic surfactant, polyoxyethylene nonyl phenyl ether, PEG-N10, have been studied. In this paper, the effect of temperature on detergency of PEG-N10 in wool scouring test was studied with a result that its detergency increased at 5055°C sharply, and this was confirmed to depend on increase in surface activities, emulsifying power and solubilization.
Relation between detergency and length of ethylene oxide chain was investigated with nonionic surfactants in this paper. With the artificially soiled woolen cloth the length of ethylene oxide indicating maximum detergency was found to become longer as the washing temperature rises higher. Furthermore, it was reconfirmed with the natural soils that the optimum length changes to a large extent, depending upon the kind of soils.