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Synthesis processes for flocculation - and coagulating agents of the poly vinyl amine powder type
Synthesis processes for flocculation - and coagulating agents of the poly vinyl amine powder type
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机译:聚乙烯胺粉型絮凝剂和絮凝剂的合成方法
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摘要
The invention relates to a method for synthesizing polyvinylamine (PVA)- type polymers from a vinylformamide monomer at a low temperature. According to the invention, polymerization starts at 0 °C, is initiated by an original redox and azoic catalyst combination and is carried out at a substantially normal pressure.The polymerisation is conducted in water and is followed by direct hydrolysis. A cationic PVA is obtained directly in the form of a powder with a high molecular weight. It is also possible to operate with an emulsion at an initiation temperature of approximately 15 %. The PVA can be used as flocculating and coagulating agents in the paper industry, water treatment industry, oil industry, parapetrolic industry and the like.
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