US 12,692,420 B2 · One-component aqueous spray adhesive

Abstract

Provided is a one-component aqueous spray adhesive. The spray adhesive includes an aqueous chloroprene dispersion, where the increase of the Shore A hardness of the formed adhesive film in 0 to 10 hours accounts for equal to or more than 90% of the increase of the Shore A hardness of the formed adhesive film in 0 to 1000 hours; a styrene-acrylate copolymer dispersion having a solid content of 15% by weight to 25% by weight, relative to the total weight of solids of the aqueous chloroprene dispersion; a polyol ester without hydroxyl groups in an amount of 0.9% by weight to 3.8% by weight, relative to the total weight of the aqueous spray adhesive; and an amino acid in an amount of 4% by weight to 15% by weight, relative to the total weight of the aqueous chloroprene dispersion.

Claims11

Dependent claims

A one-component aqueous spray adhesive comprising

a. an aqueous chloroprene dispersion, wherein an increase of Shore A hardness of a formed adhesive film in 0 to 10 hours accounts for equal to or more than 90% of the increase of the Shore A hardness of the formed adhesive film in 0 to 1000 hours;
b. a styrene-acrylate copolymer dispersion having a solid content of 15% by weight to 25% by weight, relative to total weight of solids of the aqueous chloroprene dispersion;
c. a polyol ester without hydroxyl groups in an amount 0.9% by weight to 3.8% by weight, relative to the total weight of the aqueous spray adhesive;
d. an amino acid in an amount of 4% by weight to 15% by weight, relative to the total weight of the aqueous chloroprene dispersion;
e. optionally, a nanosized metal oxide;
and
f. optionally, an auxiliary agent.

4 more elements

Dependencies are inferred from the claim text.

One-component aqueous spray adhesive

Life of this patent

One-component aqueous spray adhesive

Life of this patent

Abstract

Claims11