Saint-Gobain Placo

Saint-Gobain Placo S.a.s.

Basf Se Corporation

Stepan Company

Hamouda Jaffel

Richard Morlat

Joachim Dengler

Uwe Gehrig

Brian K Mirous

Fabian Niedermair

Radomir Kamler

Georg Daxenberger

Andrea Ranzani Da Costa

Samuel Coquelin

Jerome Cantonnet

Jean-Luc Marin

Sophie Quelen

Guillaume Saingier

Abderahim Ryadi

Matthieu Baillergeau

An apparatus () for the production of a plaster slurry is described, the apparatus () comprising a mixer () for mixing at least plaster and water to form a plaster slurry, the mixer () comprising an outlet conduit (), a foam generator () for mixing at least air, a foaming agent and water to produce a foam, the foam generator () in fluid communication with the mixer () via a fluid pathway () comprising a foam conduit (); and a mass flow meter (), wherein the mass flow meter () is configured to measure the density and mass flow rate of the foam within the foam conduit () or the plaster slurry within the outlet conduit (). Additionally, a method of manufacturing a plaster slurry is described.

Apparatus and method for the production of a plaster slurry

A surfactant composition is disclosed comprising a first alkyl sulfate surfactant, optionally a second alkyl sulfate surfactant, and optionally an alkyl ether sulfate. The first and second alkyl sulfate surfactants have Formula (1):R—OSOM  (1)and the alkyl ether sulfate has Formula (2):R—(OCHCH)OSOM  (2)in which Rand Rare independently selected linear or branched alkyl or a combination thereof having from 6 to 14 carbon atoms, y has an average value from 0.1 to 5, and Mand Mare cations independently selected from sodium, calcium, ammonium, or a combination of two or all of these. Use of the composition as a foaming agent for gypsum slurries, and of the gypsum slurries for formation of gypsum boards, are disclosed.

Alkyl sulfate / alkyl ether sulfate gypsum foamer

The present invention relates to a gypsum composition comprising recycled gypsum and a foam former comprising at least one alpha-sulfo fatty acid disalt, to a process for production thereof and to an article comprising the gypsum composition of the invention. The present invention further relates to the use of a foam former comprising at least one alpha-sulfo fatty acid disalt for reducing the wet density of an aqueous gypsum composition having a recycled gypsum content of at least 0.5% by weight.

Disalt as robust primary surfactant for calcium sulfate mixtures containing recycled gypsum

An apparatus for preparing foam for incorporation into cementitious slurry comprises a conduit having an inlet for receiving a gas feed and a surfactant feed, and an outlet for allowing the exit of foam. The conduit houses a porous plug that provides a partial barrier to fluid flow along the conduit, the plug comprising a plurality of particles that are packed in a regular array and that define a three-dimensional network of pores extending therebetween. The apparatus comprises a resilient component located between the plug and the conduit.

Apparatus and method for the production of foam

A method and system for producing a gypsum product comprising a mixer for mixing gypsum and water and two foam feeds into the system wherein the foam feeds each comprise foam of different bubble size distributions.

Method and apparatus for manufacturing gypsum products

Growing community of inventors

Aulnay-sous-Bois, France

Hamouda Jaffel