Bpb Limited

Centre National De La Recherche Scientifique

Ecole Nationale Superieure De Ceramique Industrielle (ensci)

Agnes Smith

Ian Paul Wilkes

Thierry Chotard

Cyrielle S Dupas

Thierry Chartier

Jean-Pierre Bonnet

Youssef El Hafiane

Cyrielle Sandrine Dupas

Ian Wilkes

The formulation for making plasterboard with paper cover sheets comprises finely divided gypsum, a minor amount by weight of starch and, as crosslinking agent for the starch, a tri-functional reactive s-triazine having substituents at positions 2, 4 and 6 of the triazine ring which are reactive with the starch. A preferred crosslinking agent is 2,4,6-trichloro-s-triazine, which is preferably partially reacted with the starch before further reaction with the paper cover sheets for the plaster board.

Gypsum based formulations

A cement suspension includes the following, in relation to the cement material: water (22-35% by weight); acetic acid (1-10% by weight); plasticizer (up to 8% by weight); and dispersant agent (0-2% by weight), having an apparent viscosity of 0.5-2 Pa&#xb7;s for the casting speed gradient. Pieces of cement that are prepared from the suspension and which can be used as electronic components are also disclosed.

Preparation of cement films by tape casting

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Limoges, France

Agnes Smith