Granulated powder of low-molecular polytetrafluoro-ethylene and powder of low-molecular polytetrafluoro-ethylene and processes for producing both
US7803889B2 · kind B2 · utility
0Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2004 |
| Grant date | Sep 28, 2010 |
| Priority date | — |
| Expiry date | Aug 25, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2982
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention provides a granulated powder of low-molecular-weight polytetrafluoroethylene reduced in the possibility of the powder being blown up or adhering to hoppers, a low-molecular-weight polytetrafluoroethylene powder obtainable by suspension polymerization, and methods of producing these. The present invention provides a low-molecular-weight polytetrafluoroethylene-based granulated powder which is obtained by a granulation treatment of a low-molecular-weight polytetrafluoroethylene particle comprising a low-molecular-weight polytetrafluoroethylene having a number average molecular weight of not higher than 600000.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.