Low-melting tetrafluorethylene copolymer and its uses
US5266639A · kind A · utility
59Cited by
27References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1992 |
| Grant date | Nov 30, 1993 |
| Priority date | — |
| Expiry date | Aug 28, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F214/26
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Copolymers of tetrafluoroethylene (TFE) and hexafluoropropylene (HFP) having high HFP content and end-of-melting temperature, T.sub.m (end), as low as 200.degree. C. are disclosed. Exceptional performance as a processing aid in polyolefins results from having T.sub.m (end) of the TFE/HFP copolymer close to the processing temperature of the polyolefin. These TFE/HFP copolymers are soluble in fluorinated cyclic solvents. Copolymer/solvent systems copolymer at significant concentrations in selected solvents are fluid and stable at room temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.