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Thermosetting acrylic adhesives

SpecialChem / Jul 2, 2003

Thermosetting acrylic adhesives are structural adhesives that often compete with epoxy and urethane adhesives but have very unique characteristics of their own. Although they have been commercially available since the late 1960s and relegated to rather niche markets, thermosetting acrylic adhesives may be poised for rapid growth for a variety of reasons. These adhesives are referred to by many names including: acrylics, first generation acrylics, second generation acrylics, modified acrylics, surface activated acrylics and "honeymoon" adhesives. They also have chemistry and physical properties that are very similar to anaerobic adhesives, which are used primarily as an interference adhesive or as a sealant. As a result, confusion often exists, and the thermosetting acrylic adhesives are not very well understood. This article will attempt to define thermosetting acrylic adhesives, their performance characteristics, and their expanding opportunities in the market place. However, the acrylic adhesives are somewhat unique in the combination of performance parameters that can be supplied.

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