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US 2023/0138157 A1Published application
Use of essential oils for separating adhesive bonds
AssigneeCovestro Deutschland AG
InventorsChristoph Thiebes, Joerg Buechner, Thomas Fait, Oliver Kirstein
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Abstract
The invention relates to the use of a separating medium, containing at least one essential oil or consisting of at least one essential oil, selected from the group consisting of phenols, phenylpropanoids and furanocoumarins, for separating at least two joining parts which are joined by means of an adhesive bond.
Claims18
(canceled)
A method for separating an assembly of adherends comprising:
- i) 2 adherends which are bonded to one another by means of an adhesive or an adhesive mixture, or
- ii) more than 2 adherends which are bonded to one another in that between 2 adjacent adherends there is located in each case an adhesive or an adhesive mixture, wherein the adhesives or adhesive mixtures present between each 2 adjacent adherends bonded to one another may be the same or different,
- by treatment with a separating medium, comprising at least one essential oil selected from the group consisting of phenols, phenylpropanoids and furanocoumarins.
An assembly of adherends comprising:
- a) i) 2 adherends which are bonded to one another by means of an adhesive or an adhesive mixture,
- or
- ii) more than 2 adherends which are bonded to one another in that between 2 adjacent adherends there is located in each case an adhesive or an adhesive mixture, wherein the adhesives or adhesive mixtures present between each 2 adjacent adherends bonded to one another may be the same or different,
- wherein in embodiment i) and ii) between at least one adherend and at least one adhesive layer there is optionally additionally located at least 1 precoat,
- b) a separating medium in encapsulated form, wherein the encapsulated separating medium is contained in at least one adhesive bonding the adherends or one adhesive mixture bonding the adherends or optionally in at least one precoat additionally present,
- and the separating medium comprises at least one essential oil selected from the group consisting of phenols, phenylpropanoids and furanocoumarins.
3 more elements
Dependencies are inferred from the claim text.