Low density polyethylene of high clarity, film made therefrom and a process for producing such film
US10633466B2 · kind B2 · utility
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Key dates
| Filing date | Feb 7, 2018 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | May 31, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2323/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A low density polyethylene composition characterized by having a density in range of 0.91 to 0.94 gm/cm3, a melt index in the range of 1 to 5 g/10 minutes, a gel permeation chromatography branching index in the range of 1.2 to 1, a polydispersity index in the range of 3.5 to 7.5, a viscosity ratio in the range of 0.7 to 1, and a long chain branching frequency greater than zero at a log molecular weight (log(MW)) value in the range of 4 to 5.5. Film formed from the polyethylene compositions with favorable haze and gloss characteristics, and a process for forming such film, are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.