	US 12,291,599 B2
	Semi-crystalline polyester polyol and method of making the same
Brian W. Carlson, Woodbury, MN (US); Justin Kaffenberger, Circle Pines, MN (US); and Alan R. Nahkala, Stillwater, MN (US)
Assigned to H.B. Fuller Company, St. Paul, MN (US)
Filed by H.B. Fuller Company, St. Paul, MN (US)
Filed on May 5, 2022, as Appl. No. 17/662,211.
Claims priority of provisional application 63/201,575, filed on May 5, 2021.
Prior Publication US 2022/0356300 A1, Nov. 10, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C08G 63/52 (2006.01); C08G 18/36 (2006.01); C08G 18/76 (2006.01); C08G 63/12 (2006.01); C08G 63/20 (2006.01); C08L 75/14 (2006.01); C09J 7/38 (2018.01); C09J 175/14 (2006.01)

CPC C08G 63/52 (2013.01) [C08G 18/36 (2013.01); C08G 18/7692 (2013.01); C08G 63/12 (2013.01); C08G 63/20 (2013.01); C08L 75/14 (2013.01); C09J 7/38 (2018.01); C09J 175/14 (2013.01); C09J 2475/00 (2013.01)]

23 Claims

1. A semi-crystalline polyester polyol comprising:

the reaction product of

a saturated fatty component having a hydroxyl number less than 2, the saturated fatty component being selected from the group consisting of saturated fatty acid, saturated fatty acid ester, saturated oil, and combinations thereof,

a polyhydric alcohol comprising at least three hydroxyl groups, and

a dibasic acid,

the semi-crystalline polyester polyol being solid at room temperature, and having an acid number of less than 4 and a hydroxyl number of from 10 to 110.