Method of processing polyethylene
US6107454A · kind A · utility
12Cited by
16References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1997 |
| Grant date | Aug 22, 2000 |
| Priority date | — |
| Expiry date | Aug 6, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/41
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Melt processed linear polyethylenes are shown to exhibit improved processability through the addition of certain surfactants. Among the melt processing parameters improved are reduced head pressure, reduced torque, reduced motor load, reduced or eliminated melt fracture, or combinations of these parameters. The surfactants can be chosen from a non-aromatic alkyl sulfonate or sulfate salt wherein a cation of the salt is selected from the group consisting of Na, K, Li, and other alkali cations and a quaternary ammonium cations, said surfactant being essentially free of halogens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.