	US 12,129,377 B2
	Polyurethane composition having polymeric plasticizer and a low content of monomeric diisocyanates
Andreas Kramer, Zürich (CH); Michael Schlumpf, Stallikon (CH); and Urs Burckhardt, Zürich (CH)
Assigned to SIKA TECHNOLOGY AG, Baar (CH)
Appl. No. 17/263,323
Filed by SIKA TECHNOLOGY AG, Baar (CH)
PCT Filed Aug. 5, 2019, PCT No. PCT/EP2019/071049 § 371(c)(1), (2) Date Jan. 26, 2021, PCT Pub. No. WO2020/030606, PCT Pub. Date Feb. 13, 2020.
Claims priority of application No. 18187903 (EP), filed on Aug. 8, 2018.
Prior Publication US 2021/0147674 A1, May 20, 2021
Int. Cl. C08L 75/08 (2006.01); C08G 18/10 (2006.01); C08G 18/30 (2006.01); C08G 18/48 (2006.01); C08G 18/71 (2006.01); C08G 18/73 (2006.01); C08G 18/75 (2006.01); C08G 18/76 (2006.01); C08K 3/04 (2006.01); C08K 3/36 (2006.01)

CPC C08L 75/08 (2013.01) [C08G 18/10 (2013.01); C08G 18/307 (2013.01); C08G 18/485 (2013.01); C08G 18/71 (2013.01); C08G 18/73 (2013.01); C08G 18/755 (2013.01); C08G 18/7621 (2013.01); C08G 18/7657 (2013.01); C08K 3/04 (2013.01); C08K 3/36 (2013.01); C08G 2150/00 (2013.01); C08G 2170/00 (2013.01)]

11 Claims

1. A moisture-curing polyurethane composition having a monomeric diisocyanate content of not more than 0.1% by weight, the moisture-curing polyurethane composition comprising

20% to 60% of at least one polyetherurethane polymer containing isocyanate groups and having a monomeric diisocyanate content of not more than 0.5% by weight, the at least one polyetherurethane polymer having been obtained from the reaction of at least one monomeric diisocyanate with at least one polyether polyol in an NCO/OH ratio of at least 3/1, and subsequent removal of a majority of the monomeric diisocyanates by means of a suitable separation method,

5% to 35% of at least one polyether having blocked hydroxyl groups, which is free of isocyanate groups, as plasticizer, wherein the blocked hydroxyl groups are acetate groups,

20% to 60% by weight of fillers, and

optionally further constituents.