Precast concrete coated with copolymer films

Details Precast concrete coated with copolymer films Precast concrete coated with copolymer films

C - Chemistry, Metallurgy

04

B

C04B 41/48 (2006.01) B28B 11/04 (2006.01) C04B 41/63 (2006.01) C08F 2/26 (2006.01)

Patent

CA 2046215

O.Z. 0050/41719 Abstract of the Disclosure: Precast concrete which is coated on at least one of its surfaces with a film, with or without fillers, of a copolymer of a) from 65 to 100% by weight of C1-C8-alkyl acry- lates, C1-C8-alkyl methacrylates and/or vinyl- aromatic monomers and b) from 0 to 35% by weight of other copolymerizable monomers with a glass transition temperature of from -25 to +30°C, where the film contains from 0.5 to 10% by weight, based on the copolymer, of a compound of the formula I Image ( I ) where R1 and R2 are each hydrogen or C4-C24-alkyl but not more than one is hydrogen, and X and Y are each alkali metal ions or ammonium ions, and a process for the production thereof are described.

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