Patent ID: 6838516

Claim:
A water dispersible polyisocyanate composition comprising (a) an aliphatic polyisocyanate or a mixture of aliphatic with other polyisocyanates; and (b) a reaction product of component (a) witb a component selected from the group consisting of: (i) a polyether diol or triol or a mixture thereof wherein a weight ratio of ethylene oxide (EO) to propylene oxide (PO) of the polyether diol and triol is greater than about 60:40, and the polyether diol has a molecular weight of about 300 to 1600 g/mole, and the polyether triol has a molecular weight of about 450 to 2400 g/mole, wherein the polyether diol, triol or mixture thereof is present in the reaction product in an amount effective to improve a peel resistance of an aqueous resin adhesive comprising the composition as compared with a peel resistance of the adhesive comprising the composition wherein the reaction product is a product of the aliphatic polyisocyanate and a polyether monol; and (ii) a mixture of polyether monol and polyether polyol, wherein the polyether polyol is selected from the group consisting of polyether diol, triol and a mixture thereof wherein a weight ratio of EO to PO of the polyether monol, diol and triol is greater than about 60:40, and the polyether diol and triol have the molecular weights as defined above, wherein the polyether monol and polyether polyol are present in the reaction product in respective amounts effective to improve a peel resistance of an aqueous resin adhesive comprising the composition as compared with a peel resistance of the adhesive comprising the composition wherein the reaction product is a product of the aliphatic polyisocyanate and the polyether monol alone.