公开(公告)号：US20210188712A1

公开(公告)日：2021-06-24

申请号：US16755778

申请日：2018-10-18

申请人： BASF SE ,  Saint-Gobain Placo

发明人： Uwe GEHRIG ,  Fabian NIEDERMAIR ,  Joachim DENGLER ,  Georg DAXENBERGER ,  Hamouda JAFFEL

IPC分类号： C04B28/14 ,  C04B18/16 ,  C04B24/16 ,  C04B24/42 ,  C04B38/10

摘要： 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.

公开(公告)号：US20220324138A1

公开(公告)日：2022-10-13

申请号：US17641902

申请日：2020-12-09

申请人： SAINT-GOBAIN PLACO

发明人： Hamouda JAFFEL ,  Richard MORLAT ,  Andrea RANZANI DA COSTA

IPC分类号： B28C5/38 ,  G01N11/04 ,  G01F1/84 ,  B28C5/02 ,  B28C7/02 ,  C04B11/00 ,  C04B38/10

摘要： An apparatus (100) for the production of a plaster slurry is described, the apparatus (100) comprising a mixer (102) for mixing at least plaster and water to form a plaster slurry, the mixer (102) comprising an outlet conduit (122), a foam generator (106) for mixing at least air, a foaming agent and water to produce a foam, the foam generator (106) in fluid communication with the mixer (102) via a fluid pathway (116) comprising a foam conduit (117); and a mass flow meter (124), wherein the mass flow meter (124) is configured to measure the density and mass flow rate of the foam within the foam conduit (117) or the plaster slurry within the outlet conduit (122). Additionally, a method of manufacturing a plaster slurry is described.

公开(公告)号：US20210107832A1

公开(公告)日：2021-04-15

申请号：US16497606

申请日：2018-04-05

申请人： STEPAN COMPANY ,  SAINT-GOBAIN PLACO

发明人： Brian K. MIROUS ,  Hamouda JAFFEL

IPC分类号： C04B24/16 ,  C04B28/14 ,  C04B38/10 ,  C04B40/00

摘要： 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): R1—OSO3−+M1(1) and the ether sulfate has Formula (2): R2—(OCH2CH2)yOSO3−30 M2(2) in which R1 and R2 are 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 M1 and M2 are 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.