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| The outstanding wet-in-wet adhesive potential of water-borne polychloroprene adhesives is are known from the 2K spray-mix process. However, this process is more complex and error-prone than 1K formulations and results in additional water and ion input into the adhesive joint. Studies showed that carbonic acid applied in the form of CO2 gas was the ideal solution. Formulations activated by carbonic acid can be applied in the same way as 1K adhesives. The wet adhesion properties are as good or even better than common 2K formulations and furthermore, carbonic acid has a positive influence on the open time of the adhesive formulation. Activation takes place throughout the whole dispersion without locally elevated concentrations – an improvement on 2K formulations – so a more uniform wetting on different substrates is achieved and wet adhesion is significantly higher. | |
A water-borne polychloroprene adhesive spray bonds foam and wood | |
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