含氟聚合物及其制造方法
By controlling the oxygen concentration and temperature in an aqueous medium to polymerize fluoropolymers, the manufacturing challenges of high molecular weight and uniformly coated films have been solved, enabling the production of high molecular weight fluoropolymers and the formation of uniformly coated films.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DAIKIN INDUSTRIES LTD
- Filing Date
- 2021-11-19
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies make it difficult to manufacture high molecular weight fluoropolymers by introducing monomer units with specific structures into fluoropolymers in large quantities, and it is also difficult to form a uniform coating film.
Polymerization of general formula (I) monomers is carried out in an aqueous medium, with the oxygen concentration in the polymerization reaction system controlled below 500 ppm by volume, preferably at a temperature of 20°C to 59°C, using persulfate as the polymerization initiator, and the polymer is treated by ultrafiltration, microfiltration, dialysis membrane treatment and other methods.
It has been achieved that high molecular weight fluoropolymers can be manufactured by introducing a large number of monomer units with specific structures, and a uniform coating film can be formed.
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