Glyoxal adhesive system and process for manufacturing the same

A process for manufacturing an optical adhesive product for improved wet adhesion in laminated opthalmic lenses comprising the steps of:

• providing a glyoxal water solution containing between about 3% and about 40% by weight glyoxal;
• and
• adding an acid for adjusting the pH of said glyoxal water solution to below about 6 and a water based polymer in an amount by weight less than said glyoxal water solution, to form the optical adhesive product that demonstrates a wet peel force strength between about 6 to about 18 Newtons,
• wherein the optical adhesive product includes:
• glyoxal present in an amount between about 3% and 40% by weight;
• said water based polymer present in an amount between 2% and 4% by weight and selected from the group consisting of polyvinyl alcohol (PVOH) polymer, polyurethanes (PU) containing hydroxy groups, hydroxyethyl cellulose, hydroxypropyl cellulose, sodium carboxymethyl cellulose, and agarose;
• less than 1% by weight of the acid;
• and
• the remainder water.