| 摘要 |
The invention relates to a method for producing adhesives having improved adhesion in the form of their aqueous dispersions or dispersion powder that can be redispersed in water. Said adhesives are produced by carrying out the emulsion polymerization of one or more monomers selected from the group of the vinyl esters of unbranched and branched carboxylic acids having 1 to 12 C atoms, of the esters of acrylic acid and methacrylic acid with branched and unbranched alcohols having 1 to 12 C atoms, of vinyl aromatic compounds, vinyl halides, dienes and alpha olefins. The emulsion polymerization is carried out in the presence of polyvinyl alcohol and the dispersion obtained thereby is optionally dried. The inventive method is characterized in that after completion of the polymerization, one or more emulsifiers selected from the group of the anionic, cationic and non-ionic emulsifiers is/are added to the dispersion in the amount of 0.3 to 3.0 wt. % with regard to the total weight of the dispersion.
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