US 11,873,369 B2
Polymers based on diisoalkenylarenes and uses thereof
Jason Tian, Houston, TX (US); Ruidong Ding, Houston, TX (US); and Chad Reiter, Savannah, GA (US)
Assigned to KRATON CORPORATION, Houston, TX (US)
Filed by Kraton Polymers LLC, Houston, TX (US)
Filed on Dec. 14, 2021, as Appl. No. 17/644,146.
Claims priority of provisional application 63/130,130, filed on Dec. 23, 2020.
Prior Publication US 2022/0195109 A1, Jun. 23, 2022
Int. Cl. C08G 61/02 (2006.01); C08J 5/24 (2006.01)
CPC C08G 61/02 (2013.01) [C08J 5/24 (2013.01); C08G 2261/12 (2013.01); C08G 2261/1412 (2013.01); C08G 2261/1642 (2013.01); C08G 2261/314 (2013.01); C08G 2261/40 (2013.01); C08J 2365/00 (2013.01)] 20 Claims
 
1. A polymer comprising a combination of repeat units (A), (B), (C) and (D):

OG Complex Work Unit Chemistry
wherein R1 is a H, C1-C8 alkyl group;
wherein Ar is an arene ring;
wherein the polymer has a solubility in a hydrocarbon solvent at 25° C. of at least 10 wt. °;
wherein the polymer has a Tg of from 50° C. to 300° C., measured using DSC according to ASTM D3418;
wherein the polymer forms a substantially gel-free solution in a hydrocarbon solvent; and
wherein the polymer has a weight average molecular weight of 8,000 to 70,000 Dalton, measured according to ASTM D5296.