US 11,891,546 B2
Catalyst-free curable compositions based on silane-functional polymers
Klaas Mennecke, Lottstetten (DE); and Marcel Oertli, Winthertur (CH)
Assigned to SIKA TECHNOLOGY AG, Baar (CH)
Appl. No. 17/253,215
Filed by SIKA TECHNOLOGY AG, Baar (CH)
PCT Filed Jun. 24, 2019, PCT No. PCT/EP2019/066703
§ 371(c)(1), (2) Date Dec. 17, 2020,
PCT Pub. No. WO2020/002257, PCT Pub. Date Jan. 2, 2020.
Claims priority of application No. 18179559 (EP), filed on Jun. 25, 2018.
Prior Publication US 2021/0115311 A1, Apr. 22, 2021
Int. Cl. C08L 83/04 (2006.01); C08K 5/549 (2006.01); C09J 183/04 (2006.01); C09D 183/04 (2006.01); C07F 7/08 (2006.01); C07F 7/18 (2006.01); C08G 65/336 (2006.01); C08G 77/16 (2006.01); C08G 77/18 (2006.01)
CPC C09J 183/04 (2013.01) [C08G 65/336 (2013.01); C08G 77/16 (2013.01); C08G 77/18 (2013.01); C08K 5/549 (2013.01); C08L 83/04 (2013.01); C09D 183/04 (2013.01); C07F 7/0816 (2013.01); C07F 7/0834 (2013.01); C07F 7/18 (2013.01); C07F 7/1804 (2013.01)] 15 Claims
 
1. A moisture-curable composition, comprising
at least one polymer P containing reactive silane groups;
between 0.1 and 5 wt.-%, based on the total composition, of at least one organosilane OS of the formula (I)

OG Complex Work Unit Chemistry
wherein
R20 independently stands for a monovalent, optionally cyclic or branched, hydrocarbyl or heterocarbyl radical, optionally comprising aromatic moieties, which contains 1 to 12 carbon atoms and wherein the carbon atom next to the silicon atom either bonds via a C═C double bond to another carbon atom or bonds to a heteroatom selected from O, N, and S;
R21 independently stands for a linear, cyclic, or branched divalent hydrocarbyl radical having 2 to 12 carbon atoms and optionally containing aromatic moieties; and
R22 stands for a hydrogen atom or a group of the formula (Ia);

OG Complex Work Unit Chemistry
wherein
the curable composition does not contain catalytically active organometallic or acidic compounds.