Invention Grant
- Patent Title: Process for forming filled bearings from fluoropolymer dispersions stabilized with anionic polyelectrolyte dispersing agents
- Patent Title (中): 用阴离子聚电解质分散剂稳定的氟聚合物分散体形成填充轴承的方法
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Application No.: US12791909Application Date: 2010-06-02
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Publication No.: US07931942B2Publication Date: 2011-04-26
- Inventor: Robert John Cavanaugh , Clay Woodward Jones
- Applicant: Robert John Cavanaugh , Clay Woodward Jones
- Applicant Address: US DE Wilmington
- Assignee: E. I. du Pont de Nemours and Company
- Current Assignee: E. I. du Pont de Nemours and Company
- Current Assignee Address: US DE Wilmington
- Main IPC: B05D3/02
- IPC: B05D3/02
Abstract:
The present invention provides a process for making a filled fluoropolymer bearing comprising providing an aqueous fluoropolymer dispersion comprising fluoropolymer particles and anionic polyelectrolyte dispersing agent in an amount sufficient for stabilization. The dispersion contains less than about 300 ppm fluorosurfactant based on the weight of the dispersion. The dispersion is coagulated to make a mush and a bearing filler is added to the dispersion prior to or after making the mush. The mush containing bearing filler is applied onto a bearing substrate to produce a coated substrate which is sintered and formed into a bearing.
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