Process for synthesizing acrylic ester copolymer of ultra-high molecular mass

An ultra-high molecular weight, acrylate technology, applied in the field of synthesis of ultra-high molecular weight acrylate copolymers, can solve the problems of bursting kettle gel, reducing production efficiency, uncontrollable reaction temperature, etc., to improve molecular weight, reduce production efficiency, The effect of reducing labor efficiency
CN101338005BInactive Publication Date: 2011-03-30安丘市东海塑业有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
安丘市东海塑业有限公司
Publication Date
2011-03-30
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention relates to a synthesis method of acrylic ester copolymer with ultra-high molecular weight (more than 6 million). The technical problem to be solved by the invention is to provide a method with multistage reaction and higher efficiency. The method comprises the following steps: (1) preparation of a seed emulsion: adding a portion weight of water and two or more unsaturated monomers with olefinic bonds, wherein the weight ratio of water to the monomers is 1:0.6 to 1; adding an emulsifying agent and a pH buffer, and adding a portion weight of or the total weight of one or two oxidants and one or two reducers to carry out reaction completely, wherein the weight ratio of the oxidant to the reducer is 1:0.7 to 1.5; and (2) multistage polymerization reaction: adding unsaturated monomers with olefinic bonds in balancing amount in multiple stages after rising the temperature, keeping the temperature at 45 to 65 DEG C, adding the balancing amount of water in multiple stages, rising the temperature to 80 to 85 DEG C, and adding the balancing amount of the oxidant and the reducer.
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Description

technical field

[0001] The invention relates to the field of polymer compounds, in particular to a method for synthesizing an ultrahigh molecular weight (above 6 million) acrylate copolymer. Background technique

[0002] Chinese patent document 200510105276.7 titled "Plasticizing Modifier for Polyvinyl Chloride Processing, Preparation Method and Application" discloses a plasticizing modifier-a method of polymerizing high molecular weight (high viscosity) acrylate. This method has some deficiencies. In the actual mass production of one-time feeding in large industries, the reaction temperature cannot be controlled due to the rapid heat release of the reaction, resulting in the phenomenon of "explosive gelation". In addition, the temperature is too low and the production efficiency is also reduced. Contents of the invention

[0003] The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art and provide a method for synthesizi...

Claims

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