	US 11,952,493 B2
	Moisture-curing polyurethane composition containing oxazolidine
Andreas Kramer, Zürich (CH); and Urs Burckhardt, Zürich (CH)
Assigned to SIKA TECHNOLOGY AG, Baar (CH)
Appl. No. 17/294,518
Filed by SIKA TECHNOLOGY AG, Baar (CH)
PCT Filed Dec. 12, 2019, PCT No. PCT/EP2019/084940 § 371(c)(1), (2) Date May 17, 2021, PCT Pub. No. WO2020/126841, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 18213019 (EP), filed on Dec. 17, 2018.
Prior Publication US 2022/0025176 A1, Jan. 27, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C08L 75/08 (2006.01); C08G 18/12 (2006.01); C08G 18/28 (2006.01); C08G 18/30 (2006.01); C08G 18/48 (2006.01); C08G 18/50 (2006.01); C08G 18/76 (2006.01); C08G 18/78 (2006.01); C08L 75/04 (2006.01)

CPC C08L 75/08 (2013.01) [C08G 18/12 (2013.01); C08G 18/2865 (2013.01); C08G 18/307 (2013.01); C08G 18/4812 (2013.01); C08G 18/4825 (2013.01); C08G 18/4829 (2013.01); C08G 18/5048 (2013.01); C08G 18/7657 (2013.01); C08G 18/7862 (2013.01); C08L 75/04 (2013.01); C08G 2150/00 (2013.01); C08G 2170/00 (2013.01); C08G 2190/00 (2013.01)]

15 Claims

1. A polyurethane composition comprising at least one polymer containing isocyanate groups, obtained from the reaction of at least one polyol and at least one diisocyanate, and at least one oxazolidine of the formula (I)

where

R¹is an alkyl or cycloalkyl or arylalkyl radical having 1 to 8 carbon atoms,

R²is H or methyl, and

G is an aromatic radical selected from the group consisting of furanyl, thiophenyl, pyridinyl, indenyl, indanyl, benzodioxolyl, benzodioxanyl, naphthyl, tetrahydronaphthyl, anthracenyl and a radical of the formula

where

R³is fluoro, chloro, bromo, nitro, cyano, phenyl, phenoxy, (C₁to C₅)-alkyl or (C₁to C₅)-alkoxy, and

n is 0, 1, 2 or 3.