Aqueous high gloss emulsion paint with long open time
AssigneeBASF SE
InventorsMatthias Laubender, Frauke Richter, Harald Röckel, Maria Gyopar Rau
Life of this patent
Estimating the term…
Abstract
The use of an aqueous emulsion paint having a pigment content of from 40 to 200 parts by weight per 100 parts by weight of polymer to coat buildings or building parts, wherein said polymer comprises an emulsion copolymer containing from 0.5 to 30% by weight of monomers of the formula I where R1 is a hydrogen atom or a methyl group, X is a divalent organic polyalkylene oxide group comprising from 1 to 50 alkylene oxide units, and R2 is a hydrogen atom or an aliphatic or aromatic hydrocarbon group having 1 to 20 carbon atoms.
Claims17
A method of coating buildings or building parts, comprising;
- applying an aqueous emulsion paint having a pigment content ranging from 40 to 200 parts by weight per 100 parts by weight of polymer and an emulsion copolymer which contains monomer units of formula I
- wherein R1 is hydrogen or methyl, —X—O— is a divalent organic alkylene oxide group, n is an integer ranging from 1 to 50 and R2 is hydrogen or an aliphatic or aromatic hydrocarbon group having from 1 to 20 carbon atoms, in an amount of 0.5 to 30% by wt of the copolymer, as a coating on the surfaces of buildings or building components.
An aqueous emulsion paint, comprising:
- an emulsion copolymer and a pigment, said copolymer having a glass transition temperature of less than 30° C. and being composed of:
- a) from 40 to 99.5% by weight of a C1 to C8 alkyl (meth)acrylate, of a vinylaromatic compound, or of mixtures thereof;
- b) from 0.5 to 30% by weight of a monomer of formula I;
- and
- c) from 0 to 50% by weight of an additional monomer;
- said paint containing from 40 to 200 parts by weight of pigment per 100 parts by weight of said copolymer.
A method of coating buildings or building parts, comprising;
- applying an aqueous emulsion paint having a pigment content ranging from 40 to 200 parts by weight per 100 parts by weight of polymer and an emulsion copolymer that is prepared by copolymerizing a monomer of formula I
- wherein R1 is hydrogen or methyl, —X—O— is a divalent organic alkylene oxide group, n is an integer ranging from 1 to 50 and R2 is hydrogen or an aliphatic or aromatic hydrocarbon group having from 1 to 20 carbon atoms, in an amount of 0.5 to 30% by wt of the copolymer, with at least one ethylenically unsaturated comonomer in an amount of 40 to 99.5% by weight in an aqueous emulsion containing a free radical initiator, as a coating on the surfaces of buildings or building components.
Dependencies are inferred from the claim text.