| 摘要 |
The invention relates to aqueous polymer dispersions having a solids content of from 30 to 70% by weight and a reduced formaldehyde content, on the basis of polymers of one or more monomers from the group consisting of the acrylates, methacrylates, vinyl esters, olefins, vinyl halides, vinylaromatic compounds, ethylenically unsaturated carboxylic acids and amides thereof, and containing from 0 to 10% by weight, based on the total weight of the polymer, of N-alkylamides and/or N-alkoxyalkylamides of ethylenically unsaturated carboxylic acids, characterised in that the dispersion contains from 0.05 to 10% by weight, based on the polymer, of one of more peroxy compounds from the group consisting of hydrogen peroxide, organic peroxides, perborates, percarbonates, persulphates and perphosphates. The polymer dispersions modified in accordance with the invention are suitable for use as binders, coating agents, impregnating agents (impregnants) and adhesives in all areas in which a low formaldehyde content or reduced liberation of formaldehyde during processing is required.
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