Floor panel for forming a floor covering, and substrate for a panel

1. A floor panel for forming a floor covering, wherein the floor panel comprises a layer-shaped substrate, and a decorative top layer situated above the substrate; and

wherein the substrate comprises at least a layer having a composition comprising at least a thermoplastic synthetic material; said thermoplastic synthetic material being polypropylene or polystyrene or a combination of both,

wherein the composition, apart from the thermoplastic synthetic material, comprises at least one or more elastomers and at least one filler, wherein the at least one filler is chalk, limestone and/or talc, and that an amount of the at least one filler is more than 20 wt %.

2. The floor panel according to claim 1 , wherein said composition further comprises thermoplastic polyester wherein an amount of thermoplastic polyester in the composition is between 5 wt % and 50 wt %.

3. The floor panel according to claim 2 , wherein the thermoplastic polyester is polyethylene terephthalate (PET).

4. The floor panel according to claim 3 , wherein the thermoplastic polyester is present in the composition in the form of PET flakes.

5. The floor panel according to claim 1 , wherein an amount of elastomer in the composition is between 1 wt % and 35 wt %.

6. The floor panel according to claim 1 , wherein at least one of the elastomers is a thermoplastic elastomer.

7. The floor panel according to claim 1 , wherein at least one elastomer is propylene; and wherein the elastomer realized on a basis of propylene shows any of the following characteristics:

is an ethylene-propylene copolymer; or

is a thermoplastic olefin (TPO) or a composition of polypropylene and not-cross-linked ethylene-propylene-diene monomer (EPDM) rubber.

8. The floor panel according to claim 1 , wherein at least one elastomer is a styrene block copolymer, defined as styrene-butylene-styrene (SBS) or styrene-ethylene-butylene-styrene (SEBS); and wherein the elastomer realized on a basis of styrene block copolymer shows any of the following characteristics:

is a block copolymer based on styrene and ethylene/butylene or styrene and ethylene/propylene, more particularly a linear tri-block copolymer based on styrene and ethylene/propylene or linear SEBS; or

is realized on a basis of a composition of, SEBS or SBS and, a polyolefin, such as polypropylene or polyethylene.

9. The floor panel according to claim 1 , wherein at least one elastomer is a polyolefin elastomer (POE).

10. The floor panel according to claim 1 , wherein the composition also comprises at least a compatibilizer or a coupling agent, wherein the compatibilizer or coupling agent is selected from a group comprising the following substances: a copolymer of ethylene and glycidyl methacrylate, a terpolymer of ethylene, acryl ester and glycidyl methacrylate, and a polypropylene grafted with maleic anhydride.

11. The floor panel according to claim 1 , wherein the composition comprises at least melt enhancers, an amount of which in the composition is smaller than 5 wt %.

12. The floor panel according to claim 1 , wherein the decorative top layer comprises a decor, and a transparent or translucent wear layer situated above the decor.

13. The floor panel according to claim 1 , wherein the floor panel, on at least two opposite edges, is provided with mechanical coupling means or coupling parts, wherein the coupling means or coupling parts allow that two of such floor panels can be coupled to each other in such a manner that a locking is created in a direction perpendicular to a plane of the coupled floor panels, and in a direction perpendicular to the coupled edges and in the plane of the coupled floor panels.

14. A floor panel for forming a floor covering,

wherein the floor panel comprises a layer-shaped substrate, and a decorative top layer situated above the substrate; wherein the decorative top layer comprises a decor, and a transparent or translucent wear layer situated above the decor,

wherein the floor panel, on at least two opposite edges, is provided with mechanical coupling means or coupling parts, wherein these coupling means or coupling parts allow that two of such floor panels can be coupled to each other in such a manner that a locking is created in a direction perpendicular to a plane of the coupled floor panels, and in a direction perpendicular to the coupled edges and in the plane of the coupled floor panels, and

wherein the substrate comprises at least a layer which is a composition comprising at least a thermoplastic synthetic material; said thermoplastic synthetic material being polypropylene, wherein the composition, apart from the thermoplastic synthetic material, comprises at least one or more elastomers and at least one filler, wherein said at least one filler is chalk, limestone and/or talc, wherein an amount of said at least one filler in the composition is between 10 wt % and 80 wt.

15. The floor panel according to claim 14 , wherein said composition further comprises thermoplastic polyester wherein an amount of thermoplastic polyester in the composition is between 5 wt % and 50 wt %.

16. The floor panel according to claim 14 , wherein at least one of the elastomers is a thermoplastic elastomer.

17. The floor panel according to claim 14 , wherein at least one elastomer is propylene; and wherein the elastomer realized on a basis of propylene is an ethylene-propylene copolymer.

18. The floor panel according to claim 17 , wherein an amount of elastomer in the composition is between 1 wt % and 35 wt %.

19. The floor panel according to claim 17 , wherein at least one elastomer is isotactic propylene.