Patent ID: 8974591
Filing Date: 2015-03-10
Classification: C08G,C09J

Abstract:
1. A fire and water resistant polyurethane adhesive composition comprising: a polymeric diphenylmethane diisocyanate component wherein the polymeric diphenylmethane diisocyanate component has the formula A; and n less than or equal to 5; at least one of a polyether polyol and a polyester polyol, wherein the polyester polyol and the polyester polyol have a molecular weight from 300 g/mol to 1000 g/mol, an aromatic polyol including an aromatic diol, wherein the aromatic diol is hydroxyl phenol is selected from the group consisting of resorcinol, catechol, hydroquinone and combinations thereof, and wherein the aromatic diol is in a concentration from 2.2 to 3.1% by weight of the total composition.