Patented Gel Filler Designed to Protect Annular Void Spaces

The gel filler was designed at the request of a pipeline corrosion engineering group looking for help protecting annular void spaces between pipelines and their casings. Photo courtesy of Cortec.

Corrosion control technologies group Cortec (St. Paul, Minnesota, USA) recently patented itsCorroLogic VpCI Filler. The filler helps protect pipeline casings and other tubular structures.

The product, featuring the company’s vapor-phase corrosion inhibiting technology, was designed at the request of a North American pipeline corrosion engineering group looking for help protecting annular void spaces between pipelines and their casings.

In response, the company researched and developed the two-part product that, when mixed and pumped into structural void space, turns into a gel that fills and protects the space from corrosion. The filler also provides resistance to bacterial corrosion and prevents infiltration of air and water inside the filled structure.

With little or no surface preparation required, the filler migrates under disbonded coatings to protect inaccessible and recessed surfaces.

The product is compatible with cathodic protection, and it can be removed by washing off the metal surface. The filler is made of biodegradable materials and is non-toxic, non-flammable, and nitrite- and phosphate-free.

The patent represents the company’s 63rd patent since its founding in late 1977.

†Trade name.

Source: Cortec, www.cortecvci.com.