This invention relates to a corrosion-resistant coating capable of being lied to various substrates, e.g., particularly metal and plastic surfaces, as a single coat characterized as having a high-gloss, good adhesion and a high degree of flexibility. The corrosion inhibiting composition comprises an epoxide resin containing an effective amount of a corrosion-inhibiting pigment system consisting essentially of critical amounts of at least one zinc phosphate, zinc molybdate and at least one zinc salt of a benzoic acid.

A bonded structure of an Al alloy pressed plate, in which another member is bonded onto the surface of the Al alloy pressed plate that has a lubricant layer by use of an epoxy resin based adhesive. The adhesive contains an epoxy resin, a dehydrated phosphate and a latent curing agent. The epoxy resin comprises a polyester type epoxy resin and at least one resin selected from the group consisting of a bisphenol epoxy resin, a rubber-modified bisphenol epoxy resin, and a urethane-modified epoxy resin.

A structural adhesive having excellent anti-corrosion properties which comprises: (A) a rubber modified epoxy resin prepared by reaction of a bisphenol epoxy resin and a butadiene-acrylonitrile-(meth)acrylic acid copolymer, (B) an urethane modified epoxy resin, (C) a latent curing agent, and (D) a rust inhibiting pigment selected from the group consisting of: (i) a rust inhibiting pigment comprising aluminum orthophosphate and a zinc compound, (ii) a rust inhibiting pigment comprising aluminum metaphosphate, a zinc compound and/or an alkaline earth metal compound, and (iii) a rust inhibiting pigment comprising aluminum metaphosphate and a zinc compound and optionally an alkaline earth metal compound, wherein the adhesive contains said rubber modified epoxy resin (A) and said urethane modified epoxy resin (B) in a weight ratio of 1:9 to 3:1, and said latent curing agent (C) and said rust inhibiting pigment (D) at 0.1 to 30% by weight and at 5 to 50% by weight respectively based on a total amount of both modified epoxy resins (A) and (B) is disclosed. The structural adhesive of the present invention has extremely excellent anti-corrosion properties and is useful for heming fixation especially at an edge between an outer panel and an inner panel of an automobile.

The invention submitted concerns anticorrosive pigments of aluminum orthophosphate, their application as anticorrosive pigments in coating agents, as well as a method for their manufacturing.

A method of joining electrically conductive materials comprises: Applying an electrically conductive adhesive to at least one electrically conductive material(s), wherein the electrically conductive adhesive is prepared from an epoxide-modified polyurethane, a cross-linking agent, an adhesion promotor and a conductive filler; and joining the electrically conductive material(s) with the applied adhesive to a substrate and curing the adhesive.