Patent ID: 7691913
Filing Date: 2010-04-06
Classification: C08G,C08J,C08L

Abstract:
1. An isocyanate-reactive composition comprising (a) an isocyanate-reactive component containing a polyol or mixture thereof having an average hydroxyl number of from 300 to 600 and an average of at least 3 hydroxyl groups/molecule, (b) an effective amount of a physical blowing agent selected from the group consisting of hydrofluorocarbons having from 2 to 4 carbon atoms and (c) from 0.1 to 4 parts by weight water per 100 parts by weight of the polyol or mixture thereof, wherein at least 10 percent by weight of said polyol or mixture thereof is one or more hydroxyl group containing toluene diamine-initiated polyethers, the toluene diamine-initiated polyether(s) have an average hydroxyl number of from 300 to 600, at least 80% of the hydroxyl groups on the toluene diamine-initiated polyether(s) are secondary hydroxyl groups, and oxyethylene groups constitute 3 to 20 percent of the total weight of the toluene diamine initiated polyether(s).