Abstract:
An aqueous binder composition comprising: a) a water-insoluble polymer (P) in the form of dispersed polymer particles having a glass transition temperature in the range from −50° C. to 50° C., obtained by free-radical polymerization of ethylenically unsaturated monomers M, the monomers M comprising: 80% to 99.9% by weight, based on the total amount of monomers M, of at least one neutral, monoethylenically unsaturated monomer M1 of low water-solubility; and 0.1% to 20% by weight, based on the total amount of monomers M, of at least one monoethylenically unsaturated monomer M2 which carries at least one carboxyl group and/or at least one carboxamido group (CONH2); and b) boric acid and/or at least one salt of boric acid is provided. Also provided are a process to prepare the binder composition and the use thereof.
Abstract:
The present invention relates to aqueous binder compositions which are based on aqueous polymer dispersions, to processes for preparing them, and to their uses. The aqueous binder composition comprises: a) a water-insoluble polymer P in the form of dispersed polymer particles, i.e., in the form of an aqueous polymer dispersion, the polymer P being obtainable by polymerization of ethylenically unsaturated monomers M, the monomers M comprising: 90% to 99.9% by weight, more particularly 92% to 99.5% by weight and especially 93% to 99% by weight, based on the total amount of monomers M, of at least one neutral, monoethylenically unsaturated monomer M1 of low water-solubility; and 0.1% to 10% by weight, more particularly 0.5% to 7% by weight and especially 1% to 5% by weight, based on the total amount of monomers M, of at least one monoethylenically unsaturated monomer M2 which is selected from monoethylenically unsaturated monomers which have at least two hydroxyl groups attached to vicinal C atoms, and monomers which carry a functional group which can be converted by hydrolysis into two hydroxyl groups attached to vicinal C atoms; and b) boric acid and/or at least one salt of boric acid.
Abstract:
The present invention relates to coating compositions which comprise dispersions of polymers obtained by a multistage procedure, to processes for preparing them, and to their use in corrosion protection.
Abstract:
The present invention relates to a method of applying atmospheric corrosion control coats to metallic surfaces, using copolymers comprising as monomeric building blocks monomers containing nitrile groups, monomers containing acidic groups, and vinylaromatic monomers. It relates, furthermore, to preparations for applying corrosion control coats.
Abstract:
The present invention relates to binder compositions which are based on polymer dispersions and comprise boric acid or salts of boric acid as crosslinking agents, to processes for preparing them, and to their uses.The aqueous binder composition comprises: a) a water-insoluble polymer (P) in the form of dispersed polymer particles having a glass transition temperature in the range from −50° C. to 50° C., obtainable by free-radical polymerization of ethylenically unsaturated monomers M, the monomers M comprising: 80% to 99.9% by weight, based on the total amount of monomers M, of at least one neutral, monoethylenically unsaturated monomer M1 of low water-solubility; and 0.1% to 20% by weight, based on the total amount of monomers M, of at least one monoethylenically unsaturated monomer M2 which carries at least one carboxyl group and/or at least one carboxamido group (CONH2); and b) boric acid and/or at least one salt of boric acid.
Abstract:
The present invention relates to coating compositions which comprise dispersions of polymers obtained by a multistage procedure, to processes for preparing them, and to their use in corrosion protection.