like suitable antioxidants include for example phenols phosphites thioesters and amines suitable commercial antioxidants are hindered phenolic compounds such as tetrakis methylene 3 3 39 5 39 di tert butyl 4 39 hydroxyphenyl propionate methane available under the tradename irganox 1010 frm ciba geigy inc the total of such additives in the polymer matrix of the subject adhesives is typically not more than about 1 percent by weight preferably from about 0 25 to 1 percent by weight the subject adhesives are prepared as two separate compositions as is conventional an isocyanate composition comprises the isocyanate component and a portion of the filler including a portion of the thixotrope a polyol composition comprises the polyol component the chain extender the catalyst component the remainder of the filler and other additives such as one or more antioxidants the amount of filler in each composition may vary over a wide range depending on the thixotropy requirement and the requirement that there cannot be more filler in a given composition than can be readily wetted by the liquid ingredients therein it is also preferred that the volume of the two compositions be approximately equal regardless of whether there is a disparity in their weights it is preferred to have a differentiating color additive in at least one of the compositions the subject adhesives are preferably formulated into three compositions i e an isocyanate composition and two polyol compositions which differ principally in the amount of the catalyst they contain the catalyst content in fast curing and comparatively slow curing polyol compositions is preferably.