Preparation method of tri-iso-octyl phosphate

• Main Author: SHEN GAOBO
• Format: Patent
• Language: Chinese; English
• Published: 08.02.2017
• Subjects: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; ORGANIC CHEMISTRY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The invention provides a preparation method of tri-iso-octyl phosphate, and in particular relates to a method of utilizing phosphorus oxychloride and isooctyl alcohol under negative pressure and simultaneously carrying out ultrasonic-assisted chlorine hydride gas removal to prepare tri-iso-octyl phosphate. The invention utilizes the method of ultrasonic-assisted chlorine hydride gas removal to prepare tri-iso-octyl phosphate, under the action of ultrasonic wave, violent impact occur between liquid particles, thus being conducive to accelerated reaction. Also, after ultrasonic wave acts on the reaction feed liquid, a lot of small bubbles can be produced, tensile stress can appear locally in the liquid so as to form negative pressure, the pressure reduction brings about supersaturation of gas originally dissolved in the feed liquid, so that the gas escapes from the liquid to form bubbles, and then by means of vacuum pumping and under an ultrasonic assisted condition, the escaped hydrogen chloride gas can break