Enhancement of Rubber with 2,2,4-Trimethyl-1,2-Dihydro-Quinoline Polymer by the Addition of Catalyst of Solid Resin

Abstract

The research is aimed at the synthesis process conditions of anti-oxidant 2,2,4-trimethyl-1,2-dihydro-quinoline polymer(C 12 H 15 N) n . n = 2-4, TMDQP or anti-oxidant RD). One-step and solventfree preparation of rubber anti-oxidant TMDQP replacing the traditional process of hydrochloric acid by solid resin as a catalyst recycling used method, the filter reactor with a certain amount of aniline, acetone, open the mixing device, the use of circulating pump carried out the recycle, when the temperature rose to about 90-95 C and stop heating, recycle time of about two hours around and the discharge, the method by flashing TMDQP monomer and unreacted raw materials will be separated, after the separation of raw materials back into the reactor to the recycle feeding, collected into the next TMDQP monomer in the polymerization reactor, polymerization a small amount of hydrochloric acid, the polymerization time of about 4.5 hours, at 120-125 C and then in a little of sodium hydroxide solution are added controlled pH between 7 to 9 and separated after distillation separation of high-quality TMDQP. Use of the process: in the first place, increase the effective concentration of rubber anti-oxidant TMDQP, the content of dimer, trimer and tetramer of TMDQ was increased from 46% to 75%. In the second no waste water produced, environmental pollution has been controlled.