发明名称 |
METHOD FOR THE CONTROLLED POLYMERIZATION OF FLUOROMONOMERS |
摘要 |
The invention pertains to a method for emulsion polymerization of at least one fluoromonomer, said method comprising: (i) providing at least one aqueous emulsion comprising at least one surfactant and a monomer mixture [mixture (M)] comprising at least one fluoromonomer [monomer (F)] and optionally at least one additional monomer, and at least one RAFT/MADIX agent; (ii) initiating the polymerization of said monomer mixture in said aqueous emulsion adding at least one radical initiator; (iii) continuing the polymerization by adding additional amounts of said mixture (M) and said RAFT/MADIX agent, until converting the targeted amount of said mixture (M), and (iv) terminating the polymerization and recovering a latex of fluoropolymer [polymer (F)]; wherein the amount of RAFT/MADIX agent is comprised between 0.1 and 0.5% moles, with respect to the total amount of converted monomers of said monomer mixture, and wherein the amount of said RAFT/MADIX agent present in the aqueous emulsion when initiating the polymerization in step (ii) is of at most 50% with respect to the total amount of said RAFT/MADIX agent. |
申请公布号 |
EP3143054(A1) |
申请公布日期 |
2017.03.22 |
申请号 |
EP20150722708 |
申请日期 |
2015.05.11 |
申请人 |
Solvay Specialty Polymers Italy S.p.A. |
发明人 |
DOSSI, Marco;COMINO, Giovanni;PONTA, Laura |
分类号 |
C08F14/18;C08F2/38;C08F214/22 |
主分类号 |
C08F14/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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