Process for producing dustfree composite organic plumbum salt
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A technology of dust-free compounding and organic lead, which is applied in the field of plastic processing aids, can solve the problems of massive energy consumption, toxic dust pollution, and high labor intensity, and achieve improved reaction yield, faster reaction speed, and reduced discharge of three wastes Effect
Inactive Publication Date: 2011-06-08
JINGJIANG XUGUANG PLASTIC
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[0002] Commercially available stabilizers, lubricants, and antioxidants for general PVC plastic processing are mostly in the form of monomer powders, inorganic lead salts (such as tribasic lead sulfate, dibasic lead phosphite), which are troublesome for users. (such as grinding, weighing multiple times, etc.) and the improper operation of the formula will cause quality problems, single function, low efficiency, a large amount of waste water (including lead) will be generated in the production process, and a large amount of energy consumption will be required, such as centrifugal dehydration, drying room Drying (or drum drying), crushing with a pulverizer, etc., at the same time, the labor intensity is high and the pollution of toxic dust is serious
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Embodiment 1
[0022] (2), coated compound dehydration:
[0023] Heat up the lead cyanurate obtained in reaction (1) to 85° C., add 35 kg of non-hydration-synthesized lead stearate, 20 kg of polyol stearate, and 25 kg of diethylene glycol salicylate stearate, and stir for 1.5 h , A clear separation and stratification phenomenon is formed in the reaction vessel, that is, organic lead salts and the aforementioned organic compounds are coated on the surface to form small aggregates, which are separated from water and filtered naturally for standby use, and the waste water enters the circulation pool for recycling.
[0024] (3), devolatilization ingredients:
[0025] Put the small group of pellets generated in step (2) into a biaxial jacket kneader, and according to the formula required for the production of different specifications, add 50kg of bisphenol A, 200kg of stearic acid, 150kg of paraffin, and 50g of epoxy soybean oil , heated to 135°C. Stir at a stirring speed of 45 rpm, and devolat...
Embodiment 2
[0030] (2), coated compound dehydration:
[0031] Heat the lead cyanurate obtained in reaction (1) to 80° C., add non-hydratable lead stearate, polyol stearate, and diethylene glycol salicylate stearate, and stir for 1.0 h.
[0032] This embodiment is the same as Embodiment 1 except for the above steps.
[0033] The above has disclosed the present invention with preferred embodiments, but it is not intended to limit the present invention, and all technical solutions obtained by adopting equivalent replacement or equivalent transformation methods fall within the protection scope of the present invention.
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Abstract
The invention discloses a method for preparing dustless composite organic lead salt, which is characterized by comprising the following steps: (1) synthesis of organic lead salt, namely a lead oxide / water mixture and an organic acid react in the presence of catalyst, and generated organic acid lead salt is thinned and inputted into a coating container for standby; (2) coating, composition and dehydration, namely the organic acid lead salt synthesized in the first step is subjected to temperature rise, and added with a dispersant, a salicylic acid, a C<12-18> fatty acid, diglycol ester and an antioxidant, and the mixture reacts until the container generates obvious separating and delaminating phenomenon, and is filtered to generate products for standby; (3) devolatilization and mixing, namely the products generated in the second step are added with an auxiliary agent, heated, stirred, and subjected to dehydration until the products are dried; and (4) materials after dehydration obtained in the third step are pressed and sieved into platelets with uniform dimension, and the finished products are obtained. The method adopts an intermolecular force to separate a reactant and moisture,makes the products easy separated from water, does not need drying and mechanical crushing, realizes dustless production, and reduces the investment and the discharge of the three wastes.
Description
technical field [0001] The present invention relates to plastic processing aids. Background technique [0002] Commercially available stabilizers, lubricants, and antioxidants for general PVC plastic processing are mostly in the form of monomer powders, inorganic lead salts (such as tribasic lead sulfate, dibasic lead phosphite), which are troublesome for users. (such as grinding, weighing multiple times, etc.) and the improper operation of the formula will cause quality problems, single function, low efficiency, a large amount of waste water (including lead) will be generated in the production process, and a large amount of energy consumption will be required, such as centrifugal dehydration, drying room Drying (or drum drying), pulverizing with a pulverizer, etc., at the same time, the labor intensity is high and the pollution of toxic dust is serious. Contents of the invention [0003] In order to overcome the deficiencies in the prior art, the object of the present in...
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