	US 11,952,458 B2
	Polyester impact modifiers
Arne Matthew Terwillegar, Watkinsville, GA (US); Karson Durie, Athens, GA (US); and Mangaldeep Kundu, Athens, GA (US)
Assigned to Danimer IPCo, LLC, Bainbridge, GA (US)
Filed by Danimer IPCo, LLC, Bainbridge, GA (US)
Filed on May 13, 2022, as Appl. No. 17/744,109.
Claims priority of provisional application 63/188,668, filed on May 14, 2021.
Prior Publication US 2022/0363818 A1, Nov. 17, 2022
Int. Cl. C08G 63/42 (2006.01); C08G 63/553 (2006.01); C08G 63/672 (2006.01); C08L 67/02 (2006.01)

CPC C08G 63/42 (2013.01) [C08G 63/553 (2013.01); C08L 67/02 (2013.01); C08G 63/672 (2013.01); C08L 2205/025 (2013.01); C08L 2205/03 (2013.01)]

30 Claims

1. A polyester comprising:

from about 15 to about 40 weight percent monomer repeat units of isosorbide, based on the total weight of the polyester;

from about 25 to about 60 weight percent monomer repeat units of a dicarboxylic acid or anhydride, based on the total weight of the polyester; and

from about 10 to about 20 weight percent monomer repeat units of a polyhydric alcohol, based on the total weight of the polyester,

wherein the polyester has a weight average molecular weight of at least 8000 Daltons, as determined by ASTM D5296-05 and

wherein the dicarboxylic acid or anhydride comprises a mixture of (1) succinic acid or succinic anhydride and (2) nadic anhydride, methyl nadic anhydride, C36 dimer acid, or partially hydrogenated C36 dimer acid, and mixtures thereof.