US 12,234,327 B2
Anhydride and aromatic functionalized polyorganosiloxanes
Dongchan Ahn, Midland, MI (US); Zachary S. Kean, Bay City, MI (US); and Thomas H. Peterson, Midland, MI (US)
Appl. No. 17/608,603
Filed by Dow Silicones Corporation, Midland, MI (US); and Dow Global Technologies LLC, Midland, MI (US)
PCT Filed Aug. 3, 2020, PCT No. PCT/US2020/044709
§ 371(c)(1), (2) Date Nov. 3, 2021,
PCT Pub. No. WO2021/026055, PCT Pub. Date Feb. 11, 2021.
Claims priority of provisional application 62/883,670, filed on Aug. 7, 2019.
Prior Publication US 2022/0213273 A1, Jul. 7, 2022
Int. Cl. C08G 77/00 (2006.01); C08L 83/06 (2006.01)
CPC C08G 77/80 (2013.01) [C08L 83/06 (2013.01)] 9 Claims
 
1. A polyorganosiloxane having an anhydride functionality and an aromatic functionality, wherein a carbon of the aromatic functionality is separated from a carbon of a carbonyl group of the anhydride functionality by a carbon chain, wherein the polyorganosiloxane contains 5 weight-percent or more silicon atoms based on weight of the polyorganosiloxane; and wherein the anhydride functionality and the aromatic functionality are on the same pendant group extending from a single silicon atom of the polyorganosiloxane, with only one anhydride functionality and only one aromatic functionality on the pendant group and with the aromatic functionality being more remote from the silicon atom along the pendant group than the anhydride functionality.