Abstract:
The present invention relates to a method for the chemical separation of the enantiomers of 1,1'-spirobiindane-6,6'-diol derivatives comprising providing a racemic chiral 1,1'-spirobiindane-6,6'-diol derivative, reacting a nonracemic chiral component with the racemic chiral 1,1'-spirobiindane-6,6'-diol derivative to afford a mixture of diastereomeric diesters, separating the mixture of diastereomeric diesters to provide a substantially pure individual diastereomeric diester, and chemically removing the ester groups from the substantially pure individual diastereomeric diester to provide a nonracemic chiral 1,1'-spirobiindane-6,6'-diol derivative.
Abstract:
PROBLEM TO BE SOLVED: To provide a device for controlling the reflux and recracking of a primary wax by the cracking liquefaction of waste plastics, and to provide a method for controlling the same. SOLUTION: In the method and device for controlling the reflux and recracking of the primary wax by the cracking liquefaction of a kind of waste plastic, pressure and temperatures measured in a cracking and liquefaction process are transmitted to a controller, and further computed with a control software. The signals are outputted to a control valve to control the opening degree of the control valve. Thereby, the reflux quantity of a wax reflux and recracking reaction in a dewaxing device can suitably be controlled. Namely, the reflux rate of the liquid wax and the height of the liquid wax layer in the dewaxing device are controlled to solve the unstable phenomenon of the reflux quantity of the wax on its reflux and recracking on the liquefaction cracking of the waste plastic. Hereby, the loads of a cracking section is stabilized, and the whole system can continuously be stabilized and operated. The quality of the produced oil can be clarified and improved. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a high stiffness/high toughness polymer-clay nanocomposite material. SOLUTION: This nanocomposite material is layered clay modified by a long carbon chain alkylamino salt and a functional group-containing silicone compound, and possesses high stiffness and high toughness by intercalating a polymer compound between layers of the modified clay. This method for producing the high toughness nanocomposite material comprises expanding intervals between individual clay layers by intercalating a long carbon chain alkylamino salt compound between clay layers employing an ion-exchange reaction by virtue of a solid effect of the long carbon chains, and filling the space between the clay layers with a silicone compound. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an apparatus used for the growth of a carbon nanotube. SOLUTION: The apparatus is provided with a reaction chamber for housing a cylindrical base material and a selective bending member mounted adjacent to the reaction chamber and for bending the base material cylindrically. A base structure positioned in the reaction chamber and growing the carbon nanotube is provided and provided with the cylindrical base material. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing a visible light active photocatalyst powder without using plasma which consumes a large quantity of energy. SOLUTION: This method for manufacturing a titanium dioxide photocatalyst powder by utilizing chemical vapor deposition comprises the steps of injecting a titanium salt into a reaction vessel utilizing a carrier gas by a continuous method to react the titanium salt with oxygen, and collecting the resultant photocatalyst powder through a cooler/collector connected to the outlet of the reaction vessel, whereby the photocatalyst powder is produced in a continuous and effective manner. This reaction can produce a nano powder of titanium dioxide having homogeneous dispersibility and can provide an anatase phase having photocatalytic activity. This photocatalyst has photocatalytic activity at any light wavelength in the range of 315 to 700 nm. COPYRIGHT: (C)2006,JPO&NCIPI