Delchem has introduced D180 Structural PIB (polyisobutylene), which is a totally unique and innovative primary insulating glass sealant. D180 eliminates the weak link in any dual sealed IG unit, the regular or non-structural PIB. Since the advent of dual sealed IG units, regular or non-structural PIB served as the primary seal as a barrier against moisture infiltration and inert gas, such as argon loss. The major limitation of regular PIB is that it provides no structural strength in adhesion, cohesion or shear. As such, an IG unit fabricator must use a secondary, structural sealant such as polysulphide, polyurethane, silicone or hot melt butyl. Utilizing D180 Structural PIB as the primary seal overcomes this significant limitation demonstrated by regular PIB. Early Beta site testing has shown a high level of interest in D180 Structural PIB as a pragmatic and realistic breakthrough in advancing the performance of dual sealed IG units and vastly extending the field service life of the IG unit.
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