Supramolecular polymers
View Patent ↗The invention relates to a supramolecular polymer containing units which are linked by hydrogen bonds, said units being monomers of prepolymers comprising at least one functional group selected from the functional groups (1) and (3) and a second functional group chosen from functional groups (1) to (5) wherein A denotes oxygen, sulphur or NH and X is any unit; the hydrogen bonds in the supramolecular polymer being formed between two identical or different functional groups chosen from the functional groups (1) to (5). The inventive polymers can be used alone, i.e. in the form of a composition which is essentially made from said polymers and, optionally, stabilizers, antioxidants, etc. or in the form of a mixture with other polymers or other products.
1. Supramolecular polymer comprising units connected via reversible hydrogen bonds to form a supramolecular polymer, these units being monomers or prepolymers comprising the functional group (1) and a second functional group (1):
in which A denotes oxygen, sulphur or NH and X denotes any unit; the hydrogen bonds in the supramolecular polymer being formed between two identical functional groups (1).
2. Polymer according to claim 1 , in which “A” denotes an oxygen atom.
3. Composition comprising a polymer according to claim 1 .
4. The composition of claim 3 comprising a rheology modifier for paints or coatings.
5. The composition of claim 3 comprising an additive for varying the fluidity of epoxy paints with temperature and in particular powder paints.
6. The composition of claim 3 comprising an additive in the processing of thermoplastics for carrying out reversible crosslinking.
7. The composition of claim 3 comprising an additive for facilitating the recycling of thermoplastics by destroying the hydrogen bonds with a specific solvent.
8. The composition of claim 3 comprising an additive in coatings for subsequently facilitating their stripping by a solvent specific for hydrogen bonds.
9. The composition of claim 3 comprising an additive for the impact modification of polyamides.
10. The composition of claim 3 comprising an additive in lubricants.
11. The composition of claim 3 comprising an additive in hot melts.
12. The composition of claim 3 comprising an hot melt.
13. The composition of claim 5 comprising said additive for varying the fluidity of epoxy powder paints with temperature and in particular powder paints.