Abstract: Compositions of matter comprising a liquid thiol terminated polysulfide polymer, a liquid epoxy resin and a liquid amine terminated polymer containing from about 1.7 to about 4 amine groups per molecule of the general formula ##STR1## wherein Y is a univalent radical derived by removal of an amine hydrogen from an aliphatic, alicyclic, heterocyclic or aromatic amine containing from 2 to about 20 carbon atoms and at least 2 amino groups and B is a polymeric backbone comprising carbon-carbon linkages are disclosed. Insulated window units fabricated therefrom possess superior mechanical and dewpoint retention properties.

Abstract: tin salts formed by the reaction of di lower alkyl or aryl tin oxides and dimercapto ethyl formal and similar dimercapto compounds of the general formula ##STR1## wherein R is --(CH.sub.2).sub.m (OCH.sub.2).sub.s --O--(CH.sub.2).sub.m --(OCH.sub.2).sub.p --O--.sub.n (CH.sub.2).sub.m -- wherein p is 0 or 1, m is 2 to about 6 and n is 0 to about 6 and R' is lower alkyl of up to about 10 carbon atoms, or carbocyclic aryl containing one or two aromatic rings when combined with conventional tin based stabilizers show a synergistic light and heat stabilizing effect in poly(vinyl chloride) polymers.

Abstract: polyolefins are stabilized against the degradative effects of ultraviolet light using mixtures of alkylene polysulfide polymers and conventional stabilizers such as hydroxy benzophenones, thiodipropionates and phenolic antioxidants.