Starch methylether in mineral building materials

摘要

Building material composition (I) comprises a starch ether component containing at least methyl starch ether and/or mixed ether of starch with methyl ether- and other alkyl ether- and/or hydroxy alkyl ether group. Independent claims are included for: (1) starch ether component containing a methyl ether group, where its aqueous solution (5 wt.%) exhibits Brookfield-viscosity of 900-5100 mPas, measured with a rotation viscometer with 100 UpM at 25[deg]C; and (2) a molded body and constructed parts, obtained under the use of (I).