Patent ID: 11859086
Assignee: DOW SILICONES CORPORATION
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 9:
10. A method for preparing a wood plastic composite article, said method comprising:
(1) combining starting materials comprising
45 weight % to 70 weight % of (a) a lignocellulosic-based filler;
29.5 weight % to 84.5 weight % of (b) an ethylene-based polymer;
0.5 weight % to 4 weight % of (c) a polydiorganosiloxane of formula, , where each R is an independently selected monovalent hydrocarbon group 1 to 18 carbon atoms that is alphatic unsaturation, and subscript x has a value sufficient to give the polydiorganosiloxane a viscosity of ≥ 350 mPa·s to 100,000 mPa·s measured at 25° C. at 0.1 RPM to 50 RPM on a Brookfield DV-III cone & plate viscometer with #CP-52 spindle; and

≥ 0 to 4 weight % of (d) a maleated ethylene-based polymer, where the maleated ethylene-based polymer has a melt index of 0.1 g/10 min to 25 g/10 min measure according tp ASTM D1238—13 at 190° C. and 2.16 Kg and maleic anhydride content of 0.25 weight % to 2.5 weight %;
each based on combined weights of starting materials (a), (b), (c), and (d); thereby preparing a composition; and

(2) forming the wood plastic composite article from the composition.