| 发明名称 |
Fluoropolymer dispersion treatment employing ultraviolet light and oxygen source to reduce fluoropolymer resin discoloration |
| 摘要 |
Process for reducing thermally induced discoloration of fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous dispersion medium to form aqueous fluoropolymer dispersion and isolating said fluoropolymer from said aqueous medium to obtain said fluoropolymer resin. The process comprises exposing the aqueous fluoropolymer dispersion to ultraviolet light in the presence of an oxygen source. |
| 申请公布号 |
US8785516(B2) |
申请公布日期 |
2014.07.22 |
| 申请号 |
US201313875316 |
申请日期 |
2013.05.02 |
| 申请人 |
E I du Pont de Nemours and Company |
发明人 |
Brothers Paul Douglas;Chapman Gregory Allen;Gangal Subhash Vishnu;Khasnis Dipti Dilip;Smith Adam Paul |
| 分类号 |
B29C71/04;C08F2/46;B01J19/12;C08F114/26;C08F214/26;C08F6/00;C08J3/28 |
主分类号 |
B29C71/04 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. Process for reducing thermally induced discoloration of fluoropolymer resin, said fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous dispersion medium to form aqueous fluoropolymer dispersion and isolating said fluoropolymer from said aqueous medium to obtain said fluoropolymer resin, said process comprising:
exposing the aqueous fluoropolymer dispersion to ultraviolet light in the presence of an oxygen source, wherein said aqueous fluoropolymer dispersion contains hydrocarbon surfactant which causes said thermally induced discoloration. |
| 地址 |
Wilmington DE US |
