US 12,281,199 B2
Polycarbonate polymer with siloxane repeat units, compositions, and methods
Carl A. Laskowski, Minneapolis, MN (US); and Paul B. Armstrong, St. Paul, MN (US)
Assigned to 3M Innovative Properties Company, St. Paul, MN (US)
Appl. No. 18/706,766
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
PCT Filed Jan. 18, 2023, PCT No. PCT/IB2023/050436
§ 371(c)(1), (2) Date May 2, 2024,
PCT Pub. No. WO2023/152575, PCT Pub. Date Aug. 17, 2023.
Claims priority of provisional application 63/309,044, filed on Feb. 11, 2022.
Prior Publication US 2025/0002645 A1, Jan. 2, 2025
Int. Cl. C08G 64/18 (2006.01); C08G 64/02 (2006.01); C08G 64/34 (2006.01); C08G 64/38 (2006.01); C08G 64/42 (2006.01); C08L 33/14 (2006.01); C08L 69/00 (2006.01); C09D 4/06 (2006.01); C09D 169/00 (2006.01); C08F 2/48 (2006.01)
CPC C08G 64/186 (2013.01) [C08G 64/0266 (2013.01); C08G 64/34 (2013.01); C08G 64/38 (2013.01); C08G 64/42 (2013.01); C08L 33/14 (2013.01); C08L 69/00 (2013.01); C09D 4/06 (2013.01); C09D 169/00 (2013.01); C08F 2/48 (2013.01); C08G 64/0291 (2013.01); C08G 2150/00 (2013.01); C08L 2312/00 (2013.01)] 19 Claims
 
1. A polycarbonate polymer comprising non-aromatic cyclic groups bonded with carbonate linking groups wherein a portion of the non-aromatic cyclic groups comprise a substituent
comprising siloxane repeat units having the formula:
—CH2—CH2—Si(R4)2—(OSi(R4)2)m—R5, and
—CH[Si(R4)2—(OSi(R4)2)m—R]—CH3
wherein m is the number of siloxane repeat units and R4 and R5 are independently alkyl, aryl, aralkyl or aralkylene,
wherein the polycarbonate polymer has a Tg of at least 50 and no greater than 100° C.