US 12,006,450 B2
Moisture-curing composition with good adhesive properties
Sven Reimann, Zürich (CH); Nicole Kube, Unterengstringen (CH); and Michael Schlumpf, Stallikon (CH)
Assigned to SIKA TECHNOLOGY AG, Baar (CH)
Appl. No. 17/419,130
Filed by SIKA TECHNOLOGY AG, Baar (CH)
PCT Filed Apr. 2, 2020, PCT No. PCT/EP2020/059390
§ 371(c)(1), (2) Date Jun. 28, 2021,
PCT Pub. No. WO2020/201419, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 19167577 (EP), filed on Apr. 5, 2019.
Prior Publication US 2021/0403776 A1, Dec. 30, 2021
Int. Cl. B32B 41/00 (2006.01); C08G 18/10 (2006.01); C08G 18/42 (2006.01); C08G 18/48 (2006.01); C08G 18/76 (2006.01); C08K 3/04 (2006.01); C09J 5/00 (2006.01); C09J 175/04 (2006.01)
CPC C09J 175/04 (2013.01) [C08G 18/10 (2013.01); C08G 18/4233 (2013.01); C08G 18/4238 (2013.01); C08G 18/4825 (2013.01); C08G 18/4841 (2013.01); C08G 18/4854 (2013.01); C08G 18/7671 (2013.01); C08K 3/04 (2013.01); C09J 5/00 (2013.01); C09J 2301/306 (2020.08); C09J 2475/00 (2013.01)] 15 Claims
 
1. A moisture-curing composition which is liquid or pasty at room temperature, comprising
at least one polyether urethane polymer P1 containing isocyanate groups and having a content of at least 80% by weight of 1,2-propyleneoxy units in the polyether segment, and
at least one room temperature liquid, hydrophobic polymer P2 containing isocyanate groups, obtained from the reaction of at least one monomeric diisocyanate and a hydrophobic diol having an OH number in the range from 28 to 120 mg KOH/g,
wherein polymers P1 and P2 are prepared separately from one another and polymer P1 and polymer P2 are present in a weight ratio in the range from 70/30 to 98/2, and
wherein the hydrophobic diol for the preparation of polymer P2 is selected from the group consisting of dimer fatty acid-based polyester diols and poly(1,2-butylene glycol).