The aircraft manufacturer Airbus is expected to make a major announcement Wednesday in Columbus related to its five-year agreement with Kettering’s National Composite Center and six companies to develop the next generation of advanced materials for commercial planes.

Details about the announcement were closely held Tuesday afternoon, but the announcement is being coordinated with Sen. Sherrod Brown’s office.

It is anticipated that it could offer some estimates as to the scale and detail of Airbus’ ambitions in Ohio and Dayton.

Earlier this year, the Dayton Daily News reported that NanoSperse LLC, housed within the National Composite Center in Kettering, has been producing a compound since 2009 that is used to coat military jet engine parts to protect them against erosion.

The deal announced in January with Airbus was said to give NanoSperse an opportunity to serve the bigger market for commercial aircraft. Sen. Brown, D-Ohio, Airbus Americas Chairman Allan McArtor and National Composite Center management held a news conference at the time.

The deal would provide an international market for the new materials Ohio companies will develop, Brown said.

The deal resulted from an April 2010 procurement conference at the center, one of three such conferences Airbus conducted around Ohio. Airbus, based in France, spent $4.3 billion on procurement in Ohio during 2009, the highest total in any state, Brown said then.

Composite materials are in demand for aerospace use because they are more lightweight and corrosion-resistant than metal parts.

NanoSperse has been producing a compound for Springboro-based Renegade Materials Corp. which uses it for a film that is applied to General Electric Co. jet engine parts to protect against corrosion.

NanoSperse specializes in nanotechnology, in which particles of substances much smaller than human hair fibers are introduced into existing materials to give them new properties such as increased durability.