	US 12,331,192 B2
	Dimer fatty acid-polyester diol-based polymer, containing isocyanate groups
Sven Reimann, Zürich (CH); Nicole Kube, Unterengstringen (CH); and Michael Schlumpf, Stallikon (CH)
Assigned to SIKA TECHNOLOGY AG, Baar (CH)
Appl. No. 17/418,502
Filed by SIKA TECHNOLOGY AG, Baar (CH)
PCT Filed Apr. 2, 2020, PCT No. PCT/EP2020/059393 § 371(c)(1), (2) Date Jun. 25, 2021, PCT Pub. No. WO2020/201421, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 19167575 (EP), filed on Apr. 5, 2019.
Prior Publication US 2022/0064440 A1, Mar. 3, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C08L 75/06 (2006.01); C08G 18/10 (2006.01); C08G 18/42 (2006.01); C08G 18/48 (2006.01)

CPC C08L 75/06 (2013.01) [C08G 18/10 (2013.01); C08G 18/4238 (2013.01); C08G 18/4841 (2013.01); C08G 2170/00 (2013.01); C08G 2190/00 (2013.01)]

17 Claims

1. A room temperature liquid polyester urethane polymer containing isocyanate groups, obtained from the reaction of reactants consisting of at least one monomeric diisocyanate and a dimer fatty acid-based polyester diol having an OH number in the range from 28 to 60 mg KOH/g in an NCO/OH ratio of at least 3/1, followed by removal of a majority of the monomeric diisocyanate by means of a suitable separation method,

wherein the polyester urethane polymer has an NCO content in the range from 1.5% to 6% by weight and a monomeric diisocyanate content of not more than 0.5% by weight.