Cross-linked thermoplastic polyvinylidene fluoride compositions
US11613640B2 · kind B2 · utility
0Cited by
1References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2019 |
| Grant date | Mar 28, 2023 |
| Priority date | — |
| Expiry date | Jul 29, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2312/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention relates to polyvinylidene fluoride (PVDF) copolymer compositions that have improved crosslinking efficiency and performance. The PVDF copolymer contains a high level (>14 and preferably greater than 16 wt %) of a fluorinated comonomer, and has a high molecular weight as measured by the melt viscosity at 230° C. and 100 sec−1 of 18 to 40 kpoise. The composition can be effectively cross-linked with a low level radiation (high cross-linking efficiency). The cross-linked composition is useful in high-temperature applications, such as automotive wire and cable, and heat shrink tubing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.