Saint-gobain Centre De Recherches Et D'etudes Europeen

Saint-gobain Placo

Bernard Bouteiller

Yves Boussant-Roux

Sébastien Bardon

Sylvain Petigny

Marc Roubin

A composition based on calcium carbonate includes nanometric boehmite and/or nanometric aluminum trihydroxide. A coating can be obtained from this composition. This composition makes it possible to obtain products having better high-temperature dimensional stability.

Composition for joints

A monolithic honeycomb element includes a collection of adjacent ducts of mutually parallel axes separated by walls made of a porous material, the element having, in transverse cross section, a polygonal, notably quadratic cross section delimited by exterior wall elements, wherein at least one corner of the polygon, has, along the bisector of the angle at the corner, an additional thickness, such that the total thickness of the external wall, likewise measured along the bisector of the angle at the corner, is greater than the mean thickness of the exterior walls by a factor of at least 1.43, the additional thickness being obtained at least in part by an additional quantity of porous material on the external face of the corner.

Honeycomb element with reinforced corners

A block for filtering particles contained in an internal combustion engine exhaust gases, includes overlapping assemblies of adjacent input channels () and output channels (), the input and output channels being alternately arranged so as to form, in cross-section, a checkered pattern, the overall volume of the input channels () being greater than that of the output channels (). The filtering block is characterized in that at least one inner space () of one channel () includes at least one inner fin ().

Growing community of inventors

Mollégès, France

Bernard Bouteiller