Cyclic-diene additives in polyethylene films and enhanced film orientation balance in production thereof
US10562219B2 · kind B2 · utility
0Cited by
20References
17Claims
0Family size
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Key dates
| Filing date | Aug 24, 2018 |
| Grant date | Feb 18, 2020 |
| Priority date | — |
| Expiry date | Aug 24, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2423/08
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of forming a blown film comprising extruding a molten composition through a die opening to form a film; wherein the molten composition comprises at least one polyethylene and within the range from 0.10 wt % to 10 wt % of a cyclic-diene terpolymer by weight of the composition; causing the film to progress in a direction away from the die opening; cooling the film at a distance from the die opening, the distance adjusted to effect the properties of the film; and isolating a blown film therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.