Producing blown film and blends from bimodal high density high molecular weight film resin using magnesium oxide-supported Ziegler catalyst
US5284613A · kind A · utility
46Cited by
19References
14Claims
0Family size
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Key dates
| Filing date | Sep 4, 1992 |
| Grant date | Feb 8, 1994 |
| Priority date | — |
| Expiry date | Sep 4, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2323/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A blend for blown film which exhibits improved MD/TD tear balance. The blend is a bimodal molecular weight ethylene resin containing two fractions of different molecular weight. The weight fraction of a higher molecular weight component of the blend is about 0.35 to 0.75.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.