Abstract: A water-based humidity resistant adhesive compositions comprising (i) about 30 wt % to about 80 wt % of an acrylic copolymer emulsion and (ii) about 2 wt % to about 40 wt % of an adhesion promoter of a water-based chlorinated or maleic anhydride modified polyolefin. The adhesive effectively bonds a sheet membrane to a substrate of steel, wood, concrete, a roof board, insulation, or a fiberglass mat. Also disclosed is a method of bonding the sheet membrane, such as TPO, to a substrate with the adhesive composition, and a method of preparing the adhesive composition.

Abstract: A solventless two component laminating adhesive comprising a Part A prepolymer and a Part B curative. The prepolymer comprises a lower molecular weight polyether polyol and a higher molecular weight polyether polyol. The laminating adhesive can be applied to flexible films with high oxygen transfer rate to form flexible packaging, particularly for fresh produce, such as pre-prepared salads and other green leaf products.

Abstract: This invention is the addition of an polyaldimine or polyketimine to the curative component of a two part polyurethane structural adhesive for bonding car, boat and truck parts.