US 12,460,024 B2
Polyolefin polymer incorporating hindered phenol and manufacture thereof
Tim Hsu, State College, PA (US); Minren Lin, State College, PA (US); and Tze-Chiang Chung, State College, PA (US)
Assigned to ADVANCED POLYOLEFIN TECHNOLOGIES LLC, State College, PA (US)
Filed by Advanced Polyolefin Technologies LLC, State College, PA (US)
Filed on Mar. 1, 2024, as Appl. No. 18/593,488.
Application 18/593,488 is a continuation of application No. PCT/US2022/042423, filed on Sep. 2, 2022.
Claims priority of provisional application 63/241,706, filed on Sep. 8, 2021.
Claims priority of provisional application 63/240,604, filed on Sep. 3, 2021.
Prior Publication US 2024/0218093 A1, Jul. 4, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. C08F 10/06 (2006.01)
CPC C08F 10/06 (2013.01) [C08F 2810/00 (2013.01)] 21 Claims
 
1. A polyolefin comprising hindered phenol groups covalently bound to the polyolefin through a residue of an alkenyl compound having a carboxylic acid and/or anhydride on the polyolefin, wherein the hindered phenol groups are covalently bound to the residue through a hindered phenol reagent, and wherein the hindered phenol reagent is covalently bound to the residue through a hindered hydroxyl group of the hindered phenol reagent.