Abstract: A stain-blocking, mildewcide and biocide resistant aqueous coating compositions containing synthetic or natural polymer includes a soluble zinc ammonium complex. The zinc ammonium complex has the formulaZn(NH.sub.3).sup.+2.sub.n X.H.sub.2 Owhere n is a number from 4 to 6 and X is selected from a group consisting of acetate, borate, carbonate, citrate and phosphate.

Abstract: A method and apparatus for forming a chemical composition from two liquid components selected for cross-linking reaction with each other and a product of the method are disclosed, the method including the steps of selecting the components for interaction to form a solid chemical composition product, the components being intimately mixed with an inert blowing agent to avoid altering chemical characteristics of the chemical composition product and to vary density of the product, the mixture being conducted to an application zone through an expansion chamber having internal dimensions selected for achieving substantially complete expansion of the mixture to a substantially relaxed condition as it passes from the expansion chamber. In one embodiment, means are provided for spraying the product onto the application zone. In another embodiment, delay means are provided for causing increased viscosity of the components. Mesh material forms an integral portion of one preferred product.

Abstract: The present invention relates to curing agents for epoxy resins. More particularly, the present invention relates to water soluble or water-dispersible curing agents which are mixed with water dispersed or water emulsified epoxy resins to form coating compositions which are essentially free of volatile organic solvents or cosolvents and which have extended pot life at room temperature, but which cure under ambient conditions in less than 24 hours.

Abstract: A novel transition through a wall separating a hazardous area from a less hazardous area is provided for an electrically traced, insulated conduit. The transition provides continuity of heating and insulation for the conduit while providing electrical isolation between the hazardous and less hazardous areas. The transition also provides mechanical support and protection and allows simple installation of the traced conduit through the wall.

Abstract: Oligomers produced by reacting low molecular weight epoxy compounds and low molecular weight mono-hydroxy vinyl compounds having at least one vinylic unsaturation, either in the form of vinyl groups, allylic, acrylic or methacrylic radicals attached thereto, wherein the resulting oligomers have more than one vinylic group per molecule.