3results about How to "Does not change pH" patented technology

The present application relates to the technical field of pharmaceutical preparation, in particular to a lotus leaf alkaloid liposome emulsion, a preparation method and application thereof, wherein sucrose / sodium chloride solid particles are combined with a wrapping material by a dipping film formation method to prepare empty liposomes, and a drug lotus leaf alkaloid is coated to prepare a lotus leaf alkaloid liposome emulsion.The preparation method provided by the present application is simple in process; raw materials are widely sourced and green and environmentally friendly, without affecting the biological activity of active ingredients; the preparation process is mild in conditions, without the need for special equipment, without changing the pH value of the solution, suitable for transdermal and oral administration; the amount of organic solvent is small, the encapsulation rate is high, and the preparation is easy to scale up.

This invention provides a method for producing lubricating oil base oil from heavy feedstock and the resulting lubricating oil base oil. The method includes: cutting the heavy feedstock to obtain a light component, a middle fraction, and a bottom wax; wherein the boiling point ranges of the light component, the middle fraction, and the bottom wax are 170-300℃, 300-500℃, and >500℃, respectively; subjecting the bottom wax to a first isomerization reaction under the catalysis of a first isomerization catalyst to obtain a first isomerization product; subjecting the first isomerization product and the middle fraction to a second isomerization reaction under the catalysis of a second isomerization catalyst to obtain a second isomerization product; subjecting the second isomerization product to hydrorefining; and then fractionating the obtained refined product to obtain the lubricating oil base oil. The lubricating oil base oil produced by this method has high yield, low pour point, low cloud point, and high viscosity index, making it a high-quality lubricating oil base oil.

The invention provides a method for producing lubricating oil base oil from a heavy raw material and the obtained lubricating oil base oil, and the method comprises the following steps: cutting the heavy raw material to obtain a light component, a middle fraction and tower bottom wax; wherein the boiling point ranges of the light component, the middle fraction and the tower bottom wax are 170-300 DEG C, 300-500 DEG C and gt respectively; 500 DEG C; performing a first isomerization reaction on the middle fraction under the catalytic action of a first isomerization catalyst to obtain a first isomerization reaction product; carrying out a second isomerization reaction on the tower bottom wax under the catalytic action of a second isomerization catalyst to obtain a second isomerization reaction product; and mixing the first isomerization reaction product and the second isomerization reaction product, performing hydrofining, and performing fractionation cutting on the obtained refined product to obtain the lubricant base oil. The lubricating oil base oil product produced by the method provided by the invention is high in yield, low in condensation point and high in viscosity index, and is high-grade lubricating oil base oil.