Patent ID: 6383324
Filing Date: 2002-05-07
Classification: C08G,Y10T

Abstract:
A method for sealing an insulated glass window which comprises filling a U-shaped channel around the perimeter of the window and between two panes of glass with a mixture comprising a randomly copolymeric hydroxil terminated polysulfide polyacetal of a dithiodialkylene glycol and an aliphatic diol, and, optionally, an aliphatic triol as a partial replacement of the diol, said polyacetol having a number average molecular weight of from about 500 to about 10,000, a catalyst, and a polyisocyanate at an NCO/OH ratio of from about 1:1 to about 1.2:1, and curing said mixture to form a polysulfide-based polyurethane sealant.