| 发明名称 |
Employing pretreatment and fluorination of fluoropolymer resin to reduce 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 the aqueous medium by separating fluoropolymer resin in wet form from the aqueous medium and drying to produce fluoropolymer resin in dry form. The process comprises:
pretreating the aqueous fluoropolymer dispersion and/or the fluoropolymer resin in wet or dry form; andexposing the fluoropolymer resin in dry form to fluorine. |
| 申请公布号 |
US8785560(B2) |
申请公布日期 |
2014.07.22 |
| 申请号 |
US201313875332 |
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 |
| 分类号 |
C08F8/00;C08F6/14 |
主分类号 |
C08F8/00 |
| 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 by separating fluoropolymer resin in wet form from the aqueous medium and drying to produce fluoropolymer resin in dry form, said process comprising:
pretreating the aqueous fluoropolymer dispersion and/or the fluoropolymer resin in wet or dry form; and exposing the fluoropolymer resin in dry form to fluorine. |
| 地址 |
Wilmington DE US |
