Sprayable dispersion and process for elastic adhesion of two substrate surfaces
AssigneeAlfa Klebstoffe AG
InventorsEmil Simmler, Thomas Simmler
Life of this patent
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Abstract
Boric acid is mixed, preferably at 0.1 to 10 w. % in relation to the solid content, into a sprayable dispersion based on an acrylic acid ester copolymer and a colloidal chloroprene polymerisate. The spray is applied to at least one or both substrate surfaces, the substrate surfaces to be glued are laid against each other wet and pressed together with at least 0.1 N/cm2 for at least approximately 0.5 seconds. The sprayable dispersion is preferably used for gluing foams, after a short compression the initial adhesion is so high that further processing or transport can be begun immediately.
Claims11
Sprayable dispersion comprising an acrylic acid ester copolymer and a colloidal chloroprene polymerisate, said dispersion further characterised in that it contains an amount of boric acid sufficient to improve the initial adhesion force properties of the dispersion.
Process for elastic adhesion of two substrate surfaces, at least one of which is porous in structure, comprising the steps of:
- applying a dispersion comprising an acrylic acid ester copolymer and a colloidal chloroprene polymerisate and further comprising boric acid in an amount sufficient to improve the initial adhesion force properties of the dispersion to at least one of the substrate surfaces, and gluing the substrate surfaces together by laying said surfaces together wet and pressing said surfaces together with at least 0.1 N/cm2 for at least approximately 0.5 seconds.
A sprayable dispersion for bonding two substrate surfaces together, said dispersion comprising an acrylic acid ester copolymer and a colloidal chloroprene polymerisate, said acrylic acid ester copolymer and said chloroprene polymerisate being present in a weight ratio of the acrylic acid ester copolymer to the chloroprene polymerisate of 1:10 to 1.5:1 and said dispersion further comprising from about 0.1 to 10% by weight of boric acid to improve the initial adhesion force properties of the dispersion.
Dependencies are inferred from the claim text.