Method of producing polyesterdiol composites having stably dispersed halogen-free flame retardant

摘要

The present invention is an ester incorporating a flame retardant in a powder mixture of a dicarboxylic acid and a diol using a circulating reactor When reaction relates to a separate manufacturing method of a dispersing agent or dispersion stabilizer, without the addition of a flame retardant powder is evenly dispersed and dispersion stability, characterized in that the dispersion stability is improved in flame-retardant non-halogen flame retardant having excellent minutes polyester diol complex, a non-halogen powder a flame retardant using a circulation reactor in the polyester reaction of dicarboxylic acid and diol is added to reduce the time of the separate dispersion process by uniformly dispersing the non-halogen flame retardant in polyester powder reaction process, thus the non-halogen flame-retardant synthetic poly ester diol complex is excellent in the dispersion stability is maintained do not have the addition of a separate dispersing agent or thickener, and a non-halogen flame retardant powder is used to cycle the reactor was added the dicarboxylic acid and diol in the polyester reaction, solid-state, non-halogen The flame retardant may be added to the powder, and the dicarboxylic acid and the reaction speed as shown in Figure 5 to improve the agitation and contact of the reactants in the reaction between the diol ester rapidly, the anti-foaming agent The circulation reactor proposed in the present invention especially without addition of an ammonium salt, a sulfate, an ammonium phosphate flame retardant minutes, including phosphate, ammonium polyphosphate as the dicarboxylic acid monomer, which is generated by the esterification process of the dicarboxylic acid monomer and a diol monomer in a reaction mixture consisting of a diol by-product monomers water and salt, sulfate, the generation and growth of bubbles caused by the flame retardant, containing a phosphate has an effect of prevention. ;