Highly grafted ethylene-based polymers, highly grafted ethylene-based polymer compositions, and processes for forming the same
AssigneeDow Global Technologies LLC
InventorsSantosh S. Bawiskar, Brian W. Walther
Life of this patent
Estimating the term…
Abstract
A process to form a functionalized ethylene-based polymer composition comprises reacting an ethylene-based polymer composition in at least one extruder with at least one functionalization agent and at least one free radical initiator at a melt temperature of greater than or equal to 200° C. The functionalized ethylene-based polymer composition has a yellowness index (YI) value of less than or equal to 45 and a functionalization content of greater than or equal to 2.0 wt %, based on the weight of the functionalized ethylene-based polymer composition.
Claims8
A process to form a functionalized ethylene-based polymer composition, said process comprising reacting an ethylene-based polymer composition having less than 1.2 ppm residual titanium metal in at least one extruder with at least one functionalization agent and at least one free radical initiator at a melt temperature of greater than, or equal to 250° C.;
- and
- wherein the functionalized ethylene-based polymer composition has a yellowness index value of less than, or equal to, 45, and a gel content (GI200) of less than or equal to 20;
- and
- wherein the functionalized ethylene-based polymer composition has a functionalization content of greater than 2.2 wt %, based on the weight of the functionalized ethylene-based polymer composition.
A functionalized ethylene-based polymer composition comprising a functionalization content of greater than 2.2 wt %, based on the total weight of the functionalized ethylene-based polymer composition, a yellowness index value of less than or equal to 45, a gel content (GI200) of less than or equal to 20;
- and
- less than 1.2 ppm residual titanium metal.
Dependencies are inferred from the claim text.