Linear ethylene polymer staple fibers
US5112686A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1989 |
| Grant date | May 12, 1992 |
| Priority date | — |
| Expiry date | Oct 27, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/298
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Blends of high molecular weight linear polyethylene and low molecular weight linear polyethylene provide improved staple fiber-forming capabilities over that found with either polymer taken alone. Preferably at least one of the polymers used in the blend is a linear low density polyethylene, LLDPE, which is a linear polyethylene comprising ethylene copolymerized with an amount of a higher alpha-olefin which causes the density of the copolymer to be less than that of a homopolymer made using the same process and catalyst. The higher alpha-olefin can be at least one in the C.sub.3 -C.sub.12 range, preferably in the C.sub.3 -C.sub.8 range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.