Processing aid, and composition
US9624362B2 · kind B2 · utility
0Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2014 |
| Grant date | Apr 18, 2017 |
| Priority date | — |
| Expiry date | Jun 3, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a processing aid for polyolefins which can eliminate melt fracture occurring at the start of molding in a short time even when a polyolefin, which is a melt-processable polymer, is extrusion-molded at a high speed. The present invention also aims to provide a polyolefin composition containing such a processing aid for polyolefins and a polyolefin. The processing aid for polyolefins contains an ethylene/tetrafluoroethylene copolymer as the only fluoropolymer, the ethylene/tetrafluoroethylene copolymer having a melting point of 170° C. to 270° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.