	US 12,460,106 B2
	One-component moisture-curable adhesive composition
Shahin Akhlaghi, Amsterdam (NL); and Hendrica Petronella Maria Verlaan-Hooft, Amsterdam (NL)
Assigned to Akzo Nobel Coatings International B.V., Amsterdam (NL)
Appl. No. 18/576,825
Filed by Akzo Nobel Coatings International B.V., Amsterdam (NL)
PCT Filed Jul. 12, 2022, PCT No. PCT/EP2022/069450 § 371(c)(1), (2) Date Jan. 5, 2024, PCT Pub. No. WO2023/285453, PCT Pub. Date Jan. 19, 2023.
Claims priority of application No. 21185297 (EP), filed on Jul. 13, 2021.
Prior Publication US 2024/0309242 A1, Sep. 19, 2024
Int. Cl. C09J 7/10 (2018.01); C09J 4/00 (2006.01); C09J 175/08 (2006.01)

CPC C09J 7/10 (2018.01) [C09J 4/00 (2013.01); C09J 175/08 (2013.01); C09J 2301/312 (2020.08); C09J 2301/408 (2020.08); C09J 2301/50 (2020.08); C09J 2400/303 (2013.01)]

17 Claims

1. A one-component moisture-curable adhesive composition comprising from 80 to 100 wt % of an isocyanate-functional prepolymer obtainable by reacting:

(a) one or more polyisocyanates comprising methyl diphenyl diisocyanate; and

(b) a polyol mixture comprising:

(b1) a linear butylene oxide-based diol with two primary hydroxyl groups; and

(b2) a polyether triol with three secondary hydroxyl groups,

wherein in the range of from 55 to 75% of the hydroxyl groups in polyol mixture (b) are hydroxyl groups from butylene oxide-based diol (b1), wherein the equivalent ratio between isocyanate groups in (a) and hydroxyl groups in (b) is in the range of from 3.5 to 7.0, and wherein the content of free isocyanate groups in the adhesive composition is in the range of from 14 to 17 wt % determined according to ASTM D2572-19.