Polyurethane dispersions for wet-bonding

Specific polyurethane and polychloroprene dispersions are suitable for the so-called wet-in-wet bonding process. The adhesive dispersion is applied to both materials to be bonded and then pressed together while still in a wet state. Physical setting of the adhesive during the subsequent drying process results in a tough bond. This method is particularly suitable for textiles or other combinations of substrates of which at least one should be permeable to water vapor. This allows the adhesive to bond during the subsequent drying process.







Some examples of suitable dispersions for this technology:

	Solids in %	Viscosity mPas at 23°C	pH	Min. activation temp. in °C	Characteristics
Polyurethane dispersions
Dispercoll® U 42	50	150 - 800	7.5	80 - 100	yields soft and flexible polymer films, e.g. for wet-bonding processes on textiles
Dispercoll® VP KA 8758	40	< 1000	7.5	80 - 100	For wet-bonding processes
Polychloroprene dispersions
Dispercoll® C 84	55	100	13.0	-	Aqueous colloidal dispersion of a 2-chlorobutadien polymer, for wet-bonding processes
Dispercoll® C 2325	55	100	12.0	-	Aqueous colloidal dispersion of a 2-chlorobutadien polymer, good storage stability, high initial bond strength, good adhesiont and good heat resistance in combination with Bayhydur® 401-70

These dispersions represent just a small fraction of our entire range suitable for this technology. Our experts can help you with a product recommendation for your particular application.