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US 4,394,335 AGranted
Process for preparing structural components
AssigneeWacker Chemie AG
InventorsMichael Roth, Volker Frey
Life of this patent
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AssigneeWacker Chemie AG
InventorsMichael Roth, Volker Frey
Estimating the term…
This invention relates to a process for preparing structural components which comprises preparing a slurry containing a hydraulic binding agent, water, additives and an organo(poly)siloxane of the general formula ##EQU1## where at least 10 percent of the number of R radicals are the same or different alkyl radicals having at least 4 carbon atoms per radical and the other radicals when present are alkyl radicals having from 1 to 3 carbon atoms per radical and/or phenyl radicals, R' represents the same or different alkyl radicals having from 1 to 4 carbon atoms per radical, x is 0, 1, 2 or 3, with an average of from 0.9 to 1.8, y is 0, 1, 2 or 3, with an average of 0.01 to 2.0 and z is 0, 1, 2 or 3, with an average of from 0.00 to 0.5, with the proviso that the sum of x+y+z may not exceed 3.5, molding the slurry and thereafter exposing the molded slurry to aqueous steam.
A process for preparing structural components which comprises forming a slurry containing a hydraulic bonding agent, water, additives and an organopolysiloxane in which at least a portion of the organopolysiloxane consists of at least one compound of the formula ##EQU5## where at least 10 percent of the number of the R radicals are alkyl radicals having at least 4 carbon atoms per radical and the other R radicals are selected from the group consisting of alkyl radicals having from 1 to 3 carbon atoms per radical, phenyl radicals and mixtures thereof, R' is an alkyl radical having from 1 to 4 carbon atoms per radical, x is 0, 1, 2 or 3, with an average of from 0.9 to 1.8, y is 0, 1, 2 or 3, with an average of from 0.01 to 2.0, and z is 0, 1, 2 or 3, with an average 0.00 to 0.5, with the proviso that the sum of x+y+z may not exceed 3.5, molding the slurry and thereafter exposing the molded slurry to aqueous steam.
Dependencies are inferred from the claim text.