Exxonmobil Chemical Patents Inc.

Gerd Artur Allermann

Simone Viganò

Stefan B Ohlsson

Achiel Jos Van Loon

The present invention relates to polymer blends comprising: (a) from 5 wt % to 95 wt % of a HDPE having a density from 0.941 g/cmto 0.980 g/cmand an Iof 10 dg/min or more; and (b) from 95 wt % to 5 wt % of a grafted mPE, which is a reaction product of (i) a mPE having a density from 0.860 g/cmto 0.935 g/cmand an Ifrom 0.7 dg/min to 5.0 dg/min, and (ii) a silicon-containing grafting component, wherein the blend exhibits a high-temperature creep after extrusion that is at least 20% lower than a blend of the HDPE and the mPE that has not been grafted with a silicon-containing grafting component. These blends can advantageously comprise at least one layer of a film, e.g., made via extrusion.

Silicon-containing ethylene-based polymer blends, methods for making same, and articles made therefrom

The present invention relates to polymer compositions comprising a grafted and at least partially crosslinked mLLDPE that is the reaction product of: (i) a mLLDPE having a density from 0.910 g/cmto less than 0.940 g/cmand an Ifrom 0.7 dg/min to 5.0 dg/min; (ii) a silicon-containing grafting component; and (iii) a crosslinking agent, wherein the composition exhibits a die shrinkage upon extrusion that is at least 10% lower than the composition, prior to grafting and crosslinking of the mLLDPE. These compositions can optionally be blended with HDPE. The compositions can also comprise at least one layer of a film, e.g., made via extrusion.

Growing community of inventors

Overijse, Belgium

Gerd Artur Allermann