Formulations based on anionically stabilised, aqueous polymer dispersions
AssigneeBayer MaterialScience AG
InventorsDirk Achten, Peter Kueker, Juergen Kempkes, Bianka Lorenz, Mathias Matner, Winfried Jeske, Jose Colinas-Martinez
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Abstract
Formulations based on anionically stabilised aqueous polymer dispersions, containing polychloroprene, to which carbon dioxide (CO2) has been added, to a process for their preparation, to a device for increasing the carbon dioxide content of formulations based on anionically stabilised aqueous polymer dispersions, and to the use thereof in the production of adhesives, sealants, large-volume parts or coatings.
Claims13
Formulation based on an aqueous polymer dispersion containing >20 wt. % of an anionically stabilised polychloroprene dispersion, wherein the total solids concentration=100 wt. %, characterised in that, at a pH value of from 6 to 10, the amount of dissolved carbonic acid in the dissociation equilibrium is from 0.0001 to 2 wt. %, based on the dispersion.
Device for the metered addition of carbon dioxide to aqueous polymer dispersions, characterised in that a container (1) contains an aqueous phase of a polymer dispersion or formulation (2) and a carbon dioxide gas phase (3), having a cap (4) to the end of which there is attached a check valve (5) through which the carbon dioxide can be introduced from a suitable carbon dioxide container (6) (FIG. 1).
Dependencies are inferred from the claim text.