One-part moisture-curable urethane composition
AssigneeSika Hamatite Co., Ltd.
InventorKiminori Araki
Life of this patent
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Abstract
The one-part moisture-curable urethane composition of the present technology includes: a urethane prepolymer (A) having an isocyanate group; at least one type of compound (B) selected from the group consisting of an aliphatic isocyanate compound and a modified product of the aliphatic isocyanate compound; and a monoalcohol compound (C) having a hydroxy group, the monoalcohol compound (C) being blended in an amount such that the amount of the hydroxy group in the monoalcohol compound (C) is from 0.025 to 0.4 mol per 1 mol of the isocyanate group in the urethane prepolymer (A).
Claims10
A one-part moisture-curable urethane composition comprising:
- a urethane prepolymer (A) comprising an isocyanate group;
- a compound (B) being a modified product of an aliphatic isocyanate compound;
- and
- a monoalcohol compound (C) comprising a hydroxy group;
- a content of the compound (B) being from 0.5 to 5.0 parts by mass per 100 parts by mass of the urethane prepolymer (A);
- the monoalcohol compound (C) being blended in an amount such that an amount of the hydroxy group in the monoalcohol compound (C) is from 0.025 to 0.4 mol per 1 mol of the isocyanate group in the urethane prepolymer (A),
- a number of carbons in the monoalcohol compound (C) being from 1 to 18;
- and
- the modified product of the aliphatic isocyanate compound being at least one type of modified product selected from the group consisting of an isocyanurate of the aliphatic isocyanate compound, a biuret of the aliphatic isocyanate compound, and an adduct of the aliphatic isocyanate compound and a triol.
Dependencies are inferred from the claim text.