Patent ID: 7091300
Filing Date: 2006-08-15
Classification: C08G,Y10T

Abstract:
1. A pressure-sensitive adhesive comprising the product of the catalytic reaction of: a) at least one aliphatic or alicyclic polyisocyanate having a functionality of less than or equal to three, b) a combination of at least one polypropylene glycol diol and at feast one polypropylene glycol triol, the ratio of the number of hydroxyl groups in the diol component to the number of hydroxyl groups in the triol component being less than 10 the ratio of the number of isocyanate groups to the total number of hydroxyl groups being between 0.8 and 1.15, the catalyst for the reaction consisting of or comprising a bismuth carboxylate or bismuth carboxylate derivative, and the diols having a molecular weight of less than or equal to 1000 and the triols having a molecular weight greater than or equal to 1000.