Patent ID: 7931773
Filing Date: 2011-04-26
Classification: C03C,C08G

Abstract:
1. A bonding agent, comprising: from about 3 to 60% by weight of the total bonding agent weight, of a first polymer, the first polymer comprising the reaction product of: a) from about 15 to 85% by weight, based on the total weight of the first polymer, of a first oligomer, wherein the first oligomer comprises the reaction product of: reacted at a ratio such that the first oligomer contains reactive functional groups selected from primary amine, secondary amine, hydroxyl or any combination thereof; and b) from about 15 to 85% by weight, based on the total weight of the first polymer, of a second oligomer, wherein the second oligomer comprises the reaction product of wherein the first oligomer and the second oligomer are reacted in a ratio such that the second oligomer contains reactive isocyanate functionality; and the first polymer is substantially devoid of free isocyanate functionality; wherein the bonding agent is a one-component composition that exhibits an open time of at least 30 seconds.