Fluorinated greases
US6025307A · kind A · utility
42Cited by
17References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1998 |
| Grant date | Feb 15, 2000 |
| Priority date | — |
| Expiry date | Mar 19, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M2223/042
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Fluorinated greases comprising (by weight): PA1 15%-50% polytetrafluoroethylene or tetrafluoroethylene copolymers with other ethylenically unsaturated monomers; PA1 30%-84.5% perfluoropolyether oil having a viscosity comprised between 20 and 4000 cSt at 20.degree. C.; PA1 0.5%-10% surfactant or dispersant having perfluoropolyether or perfluoroalkylic chain; PA1 0%-10% of an anticorrosion and/or antiwear additive, such that the (per)fluoropolymer particles based on TFE or their aggregates have average sizes lower than the micron and show improved diameter WEAR values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.