Adhesive compositions and method
AssigneeUSM Corporation
InventorsHerbert Bauer, Gerhard Piestert, Heinz G. Gilch
Life of this patent
Estimating the term…
Abstract
Novel, improved adhesive compositions curable at ambient temperature to form adhesive bonds between opaque, impervious, substrates without external application of heat, light or other radiation. The adhesive compositions of this invention comprise one or more ethylenically unsaturated monomers, a source of free radicals, and an activator comprising an azine dye material or the reaction product of an azine dye material with a reducing agent.
Claims12
A two part adhesive composition curable on combination at room temperature to provide a cured adhesive composition, one part of the composition being a polymerizable adhesive part comprising a source of free radicals and an ethylenically unsaturated monomer selected from the group consisting of diacrylates or dimethacrylates of mono, di, tri or tetraethylene glycol, trimethacrylates from trihydric alcohols, hydroxy and glycidyl terminated esters of acrylic and methacrylic acid and reaction products of these having two or more acrylate or methacrylate terminal groups, acrylates and methacrylates derived from epoxy resins and, mixtures of these monomers, the other part being an activator part and comprising an azine dye material which can be reacted with a reducing agent to provide a product capable of initiating curing of the first part and where said azine dye material is selected from the group consisting of:
- ##STR3## or mixtures of these and where said activator further includes a promoter selected from the group consisting of sulfur containing compounds, transition metal compounds and mixtures of these.
Dependencies are inferred from the claim text.