Production method of resorcinol oligomeric phosphate

• Main Authors: ZHANG CHUANYI, ZHANG YUNGANG, LIU XUEKUN, ZHAO CHUNZHONG
• Format: Patent
• Language: Chinese; English
• Published: 24.07.2013
• Subjects: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention relates to a production method of resorcinol oligomeric phosphate. The production method comprises the following steps of: (1) according to a proportion, feeding phosphorus oxychloride, a catalyst and resorcinol; (2) adding dissolved phenol, carrying out a slow temperature-rise reaction, balancing for 1.5 hours at 95 DEG C, balancing for one hour at 115 DEG C, balancing for one hour at 135 DEG C, finally increasing the temperature to 155 DEG C steadily on average, discharging acid while increasing the temperature until no acidic gas appears, ending the reaction to obtain raw ester; (3) carrying out a polarization process, namely, carrying out polarization, alkali neutralization and washing on the raw ester, then sampling and analyzing an acid value, and preparing wet raw ester, wherein the acid value is not more than 0.5mgkoH/g; and (4) carrying out a distillation process, namely, performing negative pressure distillation on the raw ester at 145-155 DEG C, to obtain final products, wherein the n