Polyvinyl chloride paste resin used for preparing bottle caps and method for producing same
A technology of polyvinyl chloride and paste resin, applied in bottle/container caps, capping containers with caps, applications, etc., can solve the problems of low vinyl chloride residue, high degree of polymerization, high vinyl chloride residue, etc.
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Embodiment 1
[0026] (1) Preparation of seeds:
[0027] The mixture of the water of 12000 parts by weight, the buffering agent sodium bicarbonate of 5 parts by weight, the activator cupric chloride solution of 0.8 parts by weight, the partial sodium metabisulfite of 11 parts by weight, the catalyst-1 potassium persulfate of 0.6 parts by weight at 48 Aging at ℃ for 0.5 hours, then adding vinyl chloride monomer to react, the reaction temperature is? ° C, in the first 20 minutes, the feed rate was 3800 parts by weight / h, and the temperature was lowered to 50 ° C;
[0028] Then continuously add 3 parts by weight of Catalyst-II potassium persulfate to the end of the reaction, and at the same time continuously add the remaining amount of vinyl chloride monomer. , then add the emulsifier sodium lauryl sulfate of 70 parts by weight, react to when temperature rises sharply, pressure is constant or descends, and reaction finishes, then adds the lauryl alcohol of 10 parts by weight to obtain seed, an...
Embodiment 2
[0038] (1) Preparation of seeds:
[0039] The mixture of the water of 13000 parts by weight, the buffering agent sodium bicarbonate of 6 parts by weight, the activator cupric chloride solution of 0.9 parts by weight, the partial sodium metabisulfite of 10 parts by weight, the catalyst-1 potassium persulfate of 0.7 parts by weight at 47 Aging at ℃ for 0.6 hours, then adding vinyl chloride monomer to react, the reaction temperature is? °C, in the first 30 minutes, the feed rate was 4200 parts by weight / h, and the temperature was lowered to 51 °C;
[0040] Then continuously add 2 parts by weight of Catalyst-II potassium persulfate to the end of the reaction, and at the same time continuously add the remaining amount of vinyl chloride monomer, the flow rate of the remaining amount of vinyl chloride monomer is based on controlling the temperature of the reaction system as 49 ° , then add the emulsifier sodium lauryl sulfate of 70 parts by weight, react to when temperature rises sh...
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