Method for the production of free-flowing tetrafluoroethylene polymer molding powders
US5502161A · kind A · utility
1Cited by
10References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1994 |
| Grant date | Mar 26, 1996 |
| Priority date | — |
| Expiry date | Dec 21, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2327/18
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An improved process for preparing free flowing tetrafluoroethylene (TFE) polymer powders is disclosed in which a TFE polymer powder is (1) wetted with an aqueous solution containing a wetting agent selected from the group consisting of (a) ethylene glycol ethers, (b) propylene glycol ethers and (c) diols or triols, (2) agglomerated and (3) dried.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.