- 专利标题: Core/shell fluoropolymer dispersions with low fluorosurfactant content
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申请号: US11435006申请日: 2006-05-15
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公开(公告)号: US20060264537A1公开(公告)日: 2006-11-23
- 发明人: Clay Jones , David Johnson
- 申请人: Clay Jones , David Johnson
- 主分类号: C09D151/00
- IPC分类号: C09D151/00 ; C08G18/62
摘要:
A stabilized aqueous fluoropolymer dispersion comprising: about 30 to about 70 weight % non-melt-processible fluoropolymer particles having an SSG of less than about 2.225, said fluoropolymer particles comprising a core of high molecular weight polytetrafluoroethylene and a shell of lower molecular weight polytetrafluoroethylene or modified polytetrafluoroethylene; and about 2 to about 11 weight % of aliphatic alcohol ethoxylate nonionic surfactant based on the weight of said fluoropolymer, wherein said dispersion is essentially free of surfactants containing aromatic groups and contains less than 300 ppm of fluorosurfactant based on the weight of said dispersion.
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