Metod and apparatus for continuously producing clouring polyester
A polymerization equipment and polyester technology, applied in the field of colored polyester manufacturing, can solve the problems of numerous procedures, environmental pollution, high cost, etc., and achieve the effects of uniform dispersion, easy operation and low production cost.
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[0017] Example 1
[0018] Use terephthalic acid and ethylene glycol as raw materials for esterification reaction at a temperature of 200-260℃, and then carry out a recondensation reaction at a temperature of 280-300℃ and a vacuum of less than 300Pa to continuously produce poly-p-phenylene with a viscosity of 0.655 Ethylene glycol dicarboxylate (abbreviated as: PET) melt. The polyethylene terephthalate melt in the continuous polymerization equipment 1 is fed through the main pipeline 2 at a rate of 1000 kg / h at a temperature of 220-320°C (for example, 220°C, 240°C, 280°C, 320°C) Co-mixing device 3, while branch pipe 4 feeds polyethylene terephthalate into screw mixer 5, the supply amount is 5kg / h; cyan dye powder (functional particles) (or iron oxide red, medium chrome yellow) , Titanium white or cobalt black, phthalocyanine green, toluidine purple dye) first add dispersant polyethylene glycol (or trimethylolethane, metal stearate, polyvinylpyrrolidone, aluminum titanium composite ...
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[0019] Example 2: The preparation process is the same as that of Example 1, except that the supply amount of polyester and the amount of pigment in the branch pipe are different (see Table 1), and the amount of cyan dye in the produced colored polyester is 4 wt%.
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[0020] Example 3: The preparation process is the same as in Example 1, except that the polyester supply in the branch pipe and the amount of pigment are different (see Table 1), and the amount of cyan dye in the produced colored polyester is about 12wt%
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