Method for preparing iso-octyl palmitate

The invention relates to a method for preparing iso-octyl palmitate shown in the formula (III), which comprises the following steps: in the nitrogen atmosphere, making palmitic acid shown in the formula (I) and isooctyl alcohol shown in the formula (II) react with a solid-acid catalyst for 2 to 6 hours at a temperature of between 100 and 180 DEG C; using a water segregator to add a water-carrying agent to carry out water carrying in the reaction process; and carrying out post-treatment on reaction solution after the reaction is finished to obtain the iso-octyl palmitate shown in the formula (III), wherein an amount-of-substance ratio of the total charging of the palmitic acid and the isooctyl alcohol is 1:1-4, the solid-acid catalyst is stannous oxalate, SO42-/ZrO2-Al2O3 or SO42-/TiO2-SnO2-Al2O3, and the usage of the solid-acid catalyst is 1 to 5 percent of the total charging mass of the palmitic acid and the isooctyl alcohol. The invention has the advantages of mild reaction condition, ...

Method of synthesizing polyethylene glycol perfluoroolefin methyl ether

The invention discloses a synthesizing method of carbowax full fluorine alkylene methyl ether, which comprises the following steps: putting poly glycol methyl ether and full fluoro-olefin oligomerisation body into nonpolar solvent; reacting completely under the function of organic amine activator at 30-100 deg.c; steaming out solvent; getting CnF2n-1O(CH2CH2O)mCH3; setting n as 6-12 intact numberand m as 4-24 intact number; making mass ratio of full fluoro-olefin oligomerisation body : poly glycol methyl ether at 1 : 1-1.2; making usage of organic amine activator at 0.1-1.2 double of poly glycol methyl ether.

Method for producing sulfuric acid fluorinated surfactants

The invention discloses a preparation method for a sulfuric acid ester salt fluorine surfactant. The method comprises the following steps: taking 4-perfluoro alkene oxygen group benzene sulfonyl chloride and 2-methylamino alcohol as raw materials, taking inorganic base or organic base as an acid-binding agent, and carrying out an amidation reaction in an organic solvent 1 to obtain N- ethoxyl-N-methyl-4-perfluoro alkene oxygen group benzene sulfonyl chloride; and carrying out the esterification reaction of N-ethoxyl-N-methyl-4-perfluoro alkene oxygen group benzene sulfonyl chloride and sulfur trioxide in an organic solvent 2 for 1.5 to 15 hours, carrying out distillation to remove the solvent when the esterification reaction is finished, adding water for dissolution, then adding inorganic base aqueous solution with the mass content of between 10 and 50 percent into the solution till the reaction system is neutral, stirring the reaction system for reaction, and finally obtaining sulphuric ...

Method for esterifying organic acid

The present invention relates to an esterification method of organic acid. Said invention uses organic acid and alcohol as raw material, and uses inorganic acid as catalyst, and makes the organic acid and alcohol react at 20-250 deg.C in fluorine solvent, and makes after-treatment so as to obtain organic ester. The described fluorine solvent is perfluoroalkane or perfluoroalkene or perfluoroarene of C1-C15 or their mixture with any form.

Method for producing sulfuric acid fluorinated surfactants

The invention discloses a preparation method for a sulfuric acid ester salt fluorine surfactant. The method comprises the following steps: taking 4-perfluoro alkene oxygen group benzene sulfonyl chloride and 2-methylamino alcohol as raw materials, taking inorganic base or organic base as an acid-binding agent, and carrying out an amidation reaction in an organic solvent 1 to obtain N- ethoxyl-N-methyl-4-perfluoro alkene oxygen group benzene sulfonyl chloride; and carrying out the esterification reaction of N-ethoxyl-N-methyl-4-perfluoro alkene oxygen group benzene sulfonyl chloride and sulfurtrioxide in an organic solvent 2 for 1.5 to 15 hours, carrying out distillation to remove the solvent when the esterification reaction is finished, adding water for dissolution, then adding inorganicbase aqueous solution with the mass content of between 10 and 50 percent into the solution till the reaction system is neutral, stirring the reaction system for reaction, and finally obtaining sulphuric ...

Process of preparing hexafluoropropylene oligomer