Method of coating and impregnating concrete substrates, and products obtained thereby

Claim 1

An acrylic polymer impregnant composition comprising an essentially anhydrous slurry of (1) a non-volatile binder monomer system comprising (a) from about 25% to 75% by weight, based on total of monomers, of at least one compound selected from isodecyl methacrylate, cetyl stearyl methacrylate, lauryl methacrylate, dodecyl pentadecyl methacrylate, cetyl eicosyl methacrylate, stearyl methacrylate and the dicyclopentenyloxyalkyl or dicyclopentenyl ester of a polymerizable α,β-unsaturated monocarboxylic acid selected from methacrylic acid or acrylic acid, the ester being represented by the formula ##STR3## wherein R is CH 3 or H, n is 0 or 1 and R 1 is selected from (i) alkylene groups having 2 to 6 carbon atoms and (ii) oxyalkylene groups having 4 to 6 carbon atoms and having one or more oxygen atoms joining distinct segments of the alkylene chain, each segment having at least 2 carbon atoms, and (b) from about 75% to 25% by weight, based on total of monomers, of at least one hydroxyalkyl methacrylate represented by the formula ##STR4## wherein R 2 is a straight or branched chain (C 10 -C 6 ) alkyl group or a (C 3 -C 6 ) cycloalkyl group, the total of monomers being 100%; and (2) a polymerization catalyst selected from (a) about 0.1% to 3% by weight, based on total of monomers, of a (C 3 -C 18 ) hydrocarbyl peroxide with about 0.1% to 5% by weight, based on total of monomers, of an aromatic amine polymerization accelerator, or (b) about 0.1% to 3% by weight, based on total of monomers, of a (C 3 -C 18 ) hydrocarbyl hydroperoxide with about 0.0005% to 2% by weight, based on total of monomers, of a polyvalent metal salt or complex, (c) mixtures of (a) and 0.005% to 2% by weight, based on total amount of monomers, of a polyvalent metal salt or complex, or (d) mixtures of (a) and (b).