摘要:
The present invention provides for the use of aqueous film-forming formulations comprising at least one copolymer P as film-forming constituent which is present in disperse form in the formulation and is composed of ethylenically unsaturated monomers M, the monomers M comprising i. from 70 to 99.9% by weight of at least one ester of methacrylic acid with a C1-C10-alkanol and ii. from 0.1 to 30% by weight of at least one different monoethylenically unsaturated monomer and at least 50% by weight of the monomers M being other than methyl methacrylate and not more than 1% by weight of the monomers M having two or more ethylenically unsaturated double bonds, for coating mineral moldings. The present invention additionally provides a method of coating the mineral moldings, and also the mineral moldings themselves.
摘要:
Aqueous formulations comprising as film-forming constituent at least one copolymer P, synthesized from ethylenically unsaturated monomers M, are used for coating shaped mineral articles, the copolymer P having a glass transition temperature in the range from −25 to +80° C. and the monomers M comprising more than 0.2% by weight and up to 5% by weight, based on their overall weight, of itaconic acid as monomer M1.
摘要:
The present invention provides for the use of film-forming aqueous formulations comprising in dispersed form at least one crosslinked copolymer P for coating shaped mineral articles and for a method of coating shaped mineral articles, said copolymer P comprising in copolymerized form a) from 80 to 99.89% by weight of at least one monomer selected from esters of acrylic acid with C1-C12-alkanols, esters of methacrylic acid with C1-C8-alkanols, and monovinylaromatics, b) from 0.1 to 19.99% by weight of at least one monomer different from a), and c) from 0.01 to 1.9% by weight of at least one crosslinking monomer selected from esters of acrylic or methacrylic acid with linear or branched C3-C6-alkenols, cyclic C5-C7-alkenols and polycyclic C2-C12-alkenols.
摘要:
A method of coating a mineral molding includes applying at least one aqueous preparation to at least one surface of the molding, the aqueous preparation including: (i) as film-forming constituent at least one polymer P which is composed of ethylenically unsaturated monomers M and which is present in dispersed form in the aqueous phase of the aqueous preparation and which has a glass transition temperature TG in the range from −25 to +80° C.; (ii) at least one anionic emulsifier selected from the group consisting of (a), (b), and (c): (a) salts of formula I: Alk−{O—Et}n—OSO2O−M+ (I) wherein Alk is linear or branched, saturated alkyl having from 10 to 18 carbon atoms, Et is 1,2-ethylene, n is an integer from 25 to 40, and M+ is a monovalent cation or a cation equivalent, (b) mixtures of salts of formula I; and (c) mixtures of salts of formula I with other anionic emulsifiers, wherein the salts of formula I make up at least 80% by weight of the anionic emulsifiers; and (iii) at least one nonionic emulsifier.
摘要:
The present invention relates to polymer dispersions which comprise highly branched polycarbonates, to a process for preparing them, and to their use.
摘要:
The invention provides a process for improving the storage stability of aqueous composite-particle dispersions and of aqueous formulations comprising them.
摘要:
A process for preparing an aqueous dispersion of particles composed of addition polymer and finely divided inorganic solid (composite particles), in which process ethylenically unsaturated monomers are dispersely distributed in aqueous medium and polymerized by the method of free-radical aqueous emulsion polymerization by means of at least one free-radical polymerization initiator in the presence of at least one dispersely distributed, finely divided inorganic solid and at least one dispersant, which comprises using a monomer mixture comprising >0 and ≦10% by weight of at least one ethylenically unsaturated monomer containing an epoxide group.
摘要:
Aqueous coating materials comprising a) particles having an average size ≧10 nm and ≦500 nm composed of addition polymer and finely divided inorganic solid (composite particles) and b) at least one pulverulent pigment selected from the group comprising zinc oxide, zinc sulfide, iron(III) oxide, tin dioxide and also titanium dioxide in the rutile, anatase and brookite modification.