231 results about "Propyne" patented technology

The instant invention relates to a process and method for manufacturing 2,3,3,3-tetrafluoropropene by dehydrohalogenating a reactant stream of 2-chloro-1,1,1,2-tetrafluoropropane that is substantially free from impurities, particularly halogenated propanes, propenes, and propynes.

The invention relates to a boron fluoride dipyrrole fluorescent dye containing hydrophilic groups and a preparation method thereof. The preparation method comprises the steps of introducing hydrophilic groups to a fluorine atom at 4 bit and fluorine atoms at 2 and 6 bits of BODIPY (boron dipyrromethene dyes) respectively to obtain relatively good water solubility of a whole molecule, wherein the hydrophilic groups are 3-dimethyl amino-1-propyne; enabling 2,4-dimethyl pyrrole to react with aldehyde or acyl chloride containing different substituent groups under catalysis of trifluoroacetic acid according to a molar ratio of 2:1, and then oxidizing by using DDQ (dichloro dicyano quinone) to obtain a basic BODIPY parent structure. The new synthetic method of a quaternary ammonium salt water-soluble BODIPY dye, disclosed by the invention, is simple in reaction condition and relatively high in yield. The BODIPY dye with 3-dimethyl amino-1-propyne groups has a relatively good aggregation property; the obvious aggregation process can be observed in the solution of water and dimethyl sulfoxide; moreover, the fluorescence spectrum of an aggregate has a sharp peak shape, and the strength of the aggregate is extremely high.

The invention discloses a method for separating propylene, propyne, propane and propadiene from a mixed gas. The method comprises: separating a mixed gas containing propylene, propyne, propane and propadiene by using a metal organic framework material as an adsorbent to obtain the gases of each single component, wherein the structural general formula of the metal organic framework material is [M(C4O4)(H2O)].1.5H2O, M is a metal ion, and transition metal ions or alkaline earth metal ions and squaric acid form a three-dimensional network structure through a coordination bond or intermolecular force. According to the present invention, the metal organic framework material has excellent adsorption separation selectivity to propylene, propyne, propane and propadiene, further has characteristicsof cheap and easily available raw materials, simple preparation process, low cost, good regeneration property and good repeatability, can maintain the original adsorption effect after vacuum or heating regeneration, and has broad industrial application prospects.