C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/48 (2006.01) C08G 18/10 (2006.01) C08J 5/00 (2006.01) C09K 3/10 (2006.01)
Patent
CA 2193251
There is provided an sealant made with an isocyanate or hydroxyl terminated prepolymer made by reacting a stoichiometric excess of an organic polyisocyanate with polyols made of at least a polyoxyalkylene polyether triol or a mixture thereof with a polyoxyalkylene polyether diol. The triol or diol has a degree of unsaturation of 0.06 meq KOH/g of polyol or less and has within its structure the nucleus of an initiator compound, an internal block of oxypropylene groups, and a second block of oxyalkylene groups, wherein the internal block of oxypropylene is between said nucleus and said second block, said second block is made of oxyalkylene groups derived from a C4 or higher alkylene oxide. The amount of the internal block of oxypropylene groups is from 25 weight percent to 80 weight percent based on the weight of all oxyalkylene groups and initiator in the polyether polymer, and the amount of the second block is effective to reduce the degree of unsaturation of said polyether to 0.06 meq KOH/g of polyol or less. The sealant has a CI of 25°C or less, and may be a two component or a one component moisture cured sealant.
Aviles Gladys M.
Fishback Thomas L.
Reichel Curtis J.
Aviles Gladys M.
Basf Corporation
Fishback Thomas L.
Reichel Curtis J.
Robic
LandOfFree
Sealants made using low unsaturation polyoxyalkylene... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sealants made using low unsaturation polyoxyalkylene..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sealants made using low unsaturation polyoxyalkylene... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1726001