Use of mixtures of water and essential oil for separating multilayered composites for the segregated recycling of polymer/metal films
AssigneeCovestro Deutschland AG
InventorsJoerg Buechner, Christoph Thiebes, Thomas Fait, Oliver Kirstein
Life of this patent
Estimating the term…
Abstract
The invention relates to the use of mixtures of water and essential oils selected from the group consisting of phenols, phenylpropanoids and furanocoumarins, for separating multilayered composites for the segregated recycling of polymer/metal films.
Claims15
A process for separating at least two layers of a multilayer composite that are bonded to one another over an area by at least one adhesion promoter or adhesive polymer, wherein the multilayer composite is treated with a separating medium comprising at least one essential oil selected from the group consisting of phenylpropanoids,
- wherein the at least one adhesion promoter or adhesive polymer is polyurethane-based.
Dependencies are inferred from the claim text.