Substance system
AssigneeJowat Lobers und Frank GmbH & Co. KG
InventorsChristian Terfloth, Dieter Guse, Theodor Hippold
Life of this patent
Estimating the term…
Abstract
A one-component dispersion comprising deactivated isocyanates which cross-links already at low temperatures (lower than 70° C.).
Claims7
A storage-stable, cross-linkable aqueous one-component dispersion comprising:
- (a) solid diisocyanates consisting essentially of solid diisocyanates which have been surface-deactivated or encapsulated with an amine selected from the group consisting of di-and polyamines so as to have a retarded reactivity, said surface-deactivated or encapsulated diisocyanates being present in an amount within a range of 0.1% by weight to 10% by weight based on the total weight of the aqueous dispersion and being selected from the group consisting of toluene-diisocyanates (TDI), TDI-urethdione, TDI-urea and 4,4′-methylene-di(phenylisocyanate) (MDI), and
- (b) a polyurethane based dispersion adhesive as a polymer component, so that films produced from the dispersion are cross-linkable at room temperature (20° C., 65% relative humidity) without heating.
An adhesive, comprising a storage stable, cross-linkable, aqueous one-component dispersion comprising (a) solid diisocyanates consisting essentially of solid diisocyanates which have been surface-deactivated or encapsulated with an amine selected from the group consisting of di-and polyamines so as to have a retarded reactivity, said surface-deactivated or encapsulated diisocyanates being present in an amount within a range of 0.1% by weight to 10% by weight based on the total weight of the aqueous dispersion and being selected from the group consisting of toluene-diisocyanates (TDI), TDI-urethdione, TDI-urea and 4,4′-methylene-di(phenylisocyanate) (MDI), and (b) a polyurethane based dispersion adhesive as a polymer component, so that films produced from the dispersion are cross-linkable at room temperature (20° C., 65% relative humidity) without heating.
A film comprising:
- solid diisocyanates consisting essentially of solid diisocyanates which have been surface-deactivated or encapsulated with an amine selected from the group consisting of di-and polyamines so as to have a retarded reactivity, said surface-deactivated or encapsulated diisocyanates being present in an amount within a range of 0.1% by weight to 10% by weight based on the total weight of the aqueous dispersion and being selected from the group consisting of toluene-diisocyanates (TDI), TDI-urethdione, TDI-urea and 4,4′-methylene-di(phenylisocyanate) (MDI), and (b) a polyurethane based dispersion adhesive as a polymer component, so that the film is cross-linkable at room temperature (20° C., 65% relative humidity) without heating.
Dependencies are inferred from the claim text.