Rapid curing two part adhesive
AssigneeNational Starch and Chemical Corporation
InventorMartin M. Skoultchi
Life of this patent
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Abstract
A two part adhesive composition characterized by rapid curing and long shelf life is disclosed. The adhesive composition comprises a first component of an acrylic monomer and saccharin or copper saccharinate and a second component comprising a p-toluenesulfinic acid salt which functions as an activator therefor.
Claims10
A two part adhesive composition consisting essentially of an adhesive base and an activator therefor wherein the adhesive base comprises an acrylic monomer and a saccharin component selected from the group consisting of saccharin, the copper salt of saccharin and mixtures thereof, said saccharin component being present in an amount of 0.01 to 10% by weight of the monomer;
- and the activator comprises the copper salt of p-toluenesulfonic acid when only saccharin is used in the adhesive base and is a salt of p-toluenesulfinic acid when the copper salt of saccharin is present in the adhesive base.
A process for bonding surfaces comprising the steps of:
- 1. applying to at least one of such surfaces an adhesive bse consisting essentially of an acrylic monomer and a saccharin component selected from the group consisting of saccharin, the copper salt of saccharin and mixture thereof, said saccharin component being present in an amount of 0.01 to 10% by weight of the monomer;
- 2. applying to at least one of such surfaces an activator comprising the copper salt of p-toluenesulfinic acid when only saccharin is used in the adhesive base and a salt of p-toluenesulfonic acid when the copper salt of saccharin is present in the adhesive base;
- and
- 3. placing the surfaces so treated in abutting relation until the adhesive composition polymerizes and bonds the surfaces together.
Dependencies are inferred from the claim text.