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1. WO2020193772 - SOIL CONDITIONING COMPOSITION AND SOIL CONDITIONING METHOD

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

CLAIMS

1 . Composition for increasing the water retaining capacity and aeration of soil, comprising:

- a superabsorbent polymer material, and

- xylite fibres having a fibre size of 0.5 - 6 cm.

2. Composition of claim 1 , wherein the superabsorbent material is capable of absorbing at least 98 w/w% of water with regard to the weight of the superabsorbent polymer material, the absorption resulting in a volume increase of the superabsorbent polymer material corresponding with the volume of the water absorbed, the said superabsorbent polymer material, in an environment having a humidity of 70% or less, releasing at least a portion of the water absorbed therein to the said environment

3. Composition of claim 1 or 2, wherein the superabsorbent polymer material is capable of absorbing at least 99 w/w%, preferably at least 99.5 w/w%, more preferably at least 99.8 w/w% and even more preferably at least 99.9% of water with regard to the weight of the superabsorbent polymer material.

4. Composition of any of the preceding claims, wherein the said superabsorbent polymer material releases at least a portion of the water absorbed therein to the environment, when the environment has a humidity of 75% or less.

5. Composition of any of the preceding claims, wherein the superabsorbent polymer material comprises acrylic and/or methacrylic acid-based polymers, preferably crosslinked polyacrylate, more preferably crosslinked sodium or potassium polyacrylate.

6. Composition of any of the preceding claims, wherein the xylite fibre material has a fibre size between 1 and 5 cm, preferably between 1 .5 and 4 cm.

7. Composition of any of the preceding claims, wherein at least 10 w/w% of the xylite fibre material has a fibre length of at least 2.5 cm.

8. Composition of any of the preceding claims, wherein the xylite fibre material has a bulk weight of 200 - 400 g/l, preferably 220 - 330 g/l, more preferably 250 - 300 g/l.

9. Composition according to any of the preceding claims, further comprising organic compost, in particular of vegetable origin, the organic compost preferably being pasteurized, the compost preferably having a particle size of 2 - 10 mm.

10. Composition of any of the preceding claims, further comprising one or more filler materials.

1 1 . Composition of claim 10, wherein one or more of the one filler materials is of biological origin .

12. Composition of claim 10 or 1 1 , the filler material being capable of binding and releasing water, in particular starch containing materials, the said material of biological origin preferably comprising peat.

13. Composition of any of claims 10 - 12, comprising:

- 10 - 50 v/v%, preferably 15 - 40 v/v%, more preferably 20 - 30 v/v% xylite fibre material,

- 10 - 50 v/v%, preferably 15 - 40 v/v%, more preferably 20 - 30 v/v% organic compost, and

- 0 - 80 v/v%, preferably 20 - 70 v/v%, more preferably 40 - 60 v/v% filler material.

14. Composition of any of the preceding claims, comprising 1 - 15 kg/m3, preferably 1 - 10 kg/m3 superabsorbent polymer material.

15. Composition of any of the preceding claims, having a bulk weight of 250 - 600 g/l, preferably of 280 - 500 g/l, more preferably 300 - 400 g/l.

16. Composition of any of the preceding claims, further comprising one or more inorganic additives, such as nutrients, chosen from phosphate, nitrate, potassium or a combination thereof; pH regulating agents, such as chalk, the composition preferably comprising 1 - 5 kg/m3 inorganic additives.

17. Use of the composition of any of the preceding claims as soil conditioner.

18. Method for increasing the water retaining capacity and aeration of soil, comprising the steps of:

i. Providing the composition of any of claims 1 -14,

ii. Mixing the composition with the soil.

19. Method of claim 16, wherein the composition is mixed with the soil in a weight ratio composition : soil of 0.1 - 0.7 : 1 , preferably 0.2 - 0.5 : 1 .