Sigma Adds to its Coatings Line

Friday, October 29, 2004
As an acknowledged industry leader in Marine tank coating technology Sigma Coatings has added another groundbreaking product to its assortment which already includes Sigma Phenguard and Sigmaguard CSF.

After successful use in non-marine applications such as land based storage tanks, Sigma Coatings has just launched the solvent free epoxy phenolic tank coating Sigma Novaguard for Marine applications.

Sigma Novaguard has increased chemical resistance versus Pure Epoxy and standard Solvent Free Epoxy tank coatings currently on the market whilst possessing the same excellent flow and edge coverage properties of the Sigma solvent free product range.

The solvent free nature of Sigma Novaguard means that it is more environmentally friendly than solvent based products both in terms of VOC emission and health and safety, with the solvent free nature of Sigma Novaguard improving the working conditions for the applicator as well as reducing the explosion hazard.

Application can be carried out by brush or roller for small areas and cold single feed airless spray for large areas. One of the key differences between Sigma Novaguard and other solvent free tank coating systems on the market is the ability to specify/apply it at dry film thicknesses down to 150 microns enabling a two coat system of total 300 microns to be specified. Previously the minimum application film thickness for a single coat solvent free tank coating was in the order of 300 microns making the cost of coating complex structures, which required two coats to ensure good coverage, was in some cases prohibitive.

The excellent flow, wetting of the steel and resistance to cracking at high film thicknesses mean that it is ideally suited to for application to pitted steel where a high degree of chemical resistance is required. Sigma Novaguard is the solution for vessels such as product carriers where tanktop pitting can be a problem or FPSO’s (newbuilding or conversion) where a relatively high degree of chemical resistance is essential combined with a long term performance requirements, as these vessels can typically be on station for 10 – 20 years with little or no possibility for maintenance.

Supply vessels can also benefit from using Sigma Novaguard’s resistance to the many and varied cargoes carried on these vessels such as drilling brines, fuel oils, lubricating oil etc. The tanks on board these vessels are typically small, complex and difficult to coat. Use of a solvent free system reduces health and safety risk as well as improving the working environment. The solvent free nature of Sigma Novaguard means that the coating is tolerant to over-application, an unavoidable problem in these small complex tanks.

The excellent fatty acid resistance of Sigma Novaguard also makes it ideally suited to use on the waste water tanks of large passenger and cruise vessels where waste water in general and water from the galley in particular can be particularly aggressive to coatings. Sigma Novaguard is a versatile solvent free highly chemical resistant epoxy phenolic coating that can meet the challenging regulatory and service conditions and requirements of the marine industry providing long term protection where other traditional tank coatings fail.

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