Silicone curative introduced for top coats

Sep 02 2014

SiVance, LLC, a subsidiary of Milliken & Co, has introduced the patented SiVance C1008 curative, a new silicone curative that is claimed to significantly improve the durable flexibility of epoxy polysiloxane protective top coats in marine and other applications, without sacrificing weather durability.

The development of this new curative technology solves a major challenge common to epoxy polysiloxanes: brittleness and cracking that can develop over time as the coating cures, the company said.

“Our new C1008 curative is a much-needed solution for increasing the performance and toughness of protective epoxy polysiloxane topcoats used in highly corrosive environments,” said Jeff Jones, SiVance business development director. “Regular maintenance on marine applications and infrastructure can be very time consuming and costly, but protective coatings made with SiVance’s C1008 Curative help to combat this challenge.”

In addition to demanding marine top coat applications where resistance to seawater, ultraviolet light and chemicals is critical, SiVance’s new technology is designed for coatings for other applications. It utilises a proprietary molecular structure that provides enhanced compatibility in epoxy systems.

The product is fully miscible with hydrogenated bisphenol-A epoxy resins. Its compatibility with other epoxy resins is possible with the use of solvents (methyl ethyl ketone (MEK), xylenes, etc), or reactive dilutents.

It is available globally in commercial quantities and is currently registered under the Toxic Substances Control Act (TSCA) and the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH) regulation, with other global approvals in progress.

The company told Tanker Operator that epoxy polysiloxane coatings containing C1008 could be applicable to the tanker sector, as currently, epoxy polysiloxane coatings are already being used in this application.

In particular, these epoxy polysiloxane coatings are alternatives to polyurethane top coats – so anywhere that polyurethane top coats are used today could be target applications (basically any exterior coating above the water line - where resistance to UV and weathering is important).

At present, shipping companies are evaluating the product, SiVance said.

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