EP0050140A1 - An inert growth medium and method for its preparation - Google Patents
An inert growth medium and method for its preparationInfo
- Publication number
- EP0050140A1 EP0050140A1 EP81901150A EP81901150A EP0050140A1 EP 0050140 A1 EP0050140 A1 EP 0050140A1 EP 81901150 A EP81901150 A EP 81901150A EP 81901150 A EP81901150 A EP 81901150A EP 0050140 A1 EP0050140 A1 EP 0050140A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- polyurethane foam
- growth medium
- amount
- weight
- hydrophobic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000001963 growth medium Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims description 9
- 238000002360 preparation method Methods 0.000 title claims description 6
- 229920005830 Polyurethane Foam Polymers 0.000 claims abstract description 27
- 239000011496 polyurethane foam Substances 0.000 claims abstract description 27
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 15
- 239000000835 fiber Substances 0.000 claims abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 239000006260 foam Substances 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N urethane group Chemical group NC(=O)OCC JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000007795 chemical reaction product Substances 0.000 claims description 3
- 239000002609 medium Substances 0.000 claims 1
- 241000196324 Embryophyta Species 0.000 description 11
- 229920002635 polyurethane Polymers 0.000 description 5
- 239000004814 polyurethane Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- ZBJVLWIYKOAYQH-UHFFFAOYSA-N naphthalen-2-yl 2-hydroxybenzoate Chemical compound OC1=CC=CC=C1C(=O)OC1=CC=C(C=CC=C2)C2=C1 ZBJVLWIYKOAYQH-UHFFFAOYSA-N 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000000050 nutritive effect Effects 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000011490 mineral wool Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003415 peat Substances 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 108010077805 Bacterial Proteins Proteins 0.000 description 1
- 241001137251 Corvidae Species 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 235000015108 pies Nutrition 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 1
- IEDVJHCEMCRBQM-UHFFFAOYSA-N trimethoprim Chemical compound COC1=C(OC)C(OC)=CC(CC=2C(=NC(N)=NC=2)N)=C1 IEDVJHCEMCRBQM-UHFFFAOYSA-N 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/40—Growth substrates; Culture media; Apparatus or methods therefor characterised by their structure
- A01G24/48—Growth substrates; Culture media; Apparatus or methods therefor characterised by their structure containing foam or presenting a foam structure
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/22—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing plant material
- A01G24/27—Pulp, e.g. bagasse
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/30—Growth substrates; Culture media; Apparatus or methods therefor based on or containing synthetic organic compounds
Definitions
- the present invention deals with an inert growth medium based on resilient polyurethane foam.
- Soil as growth medium is encumbered with several draw ⁇ backs. It may for instance be difficult to perform a con ⁇ trolled supply of nutritives to plants growing in soil. Furthermore, it may be difficult to influence the bac- terial environment in the soil without -simultaneously detrimentally influencing the growing conditions of the plants .
- va- rious types of plastics e.g. polyurethane foam and polyacrylonitrile grafted upon pulpwood fibres in connection with in situ polymerisa ⁇ tion, ion exchangers saturated with fertilizers, species of clay, and ground peat.
- plastics e.g. polyurethane foam and polyacrylonitrile grafted upon pulpwood fibres in connection with in situ polymerisa ⁇ tion, ion exchangers saturated with fertilizers, species of clay, and ground peat.
- Such media are for instance described in S ⁇ -PS No. 349,225, the DE-AS No. 1,221,484 and No . 1, 227 , 724 , and FR-PS No . 2 , 065 , 215 .
- the growth medium is composed of the resulting polymer-grafted pulpwood fibres, and a predetermined weight ratio of the polymer portion to the cellulosic portion of the fibres is stated for thes pulpwood fibres, said weight ratio being determined by the amount of polymer used for the polymer-grafting of the pulpwood fibres .
- DE-OS No. 2,054,823 discloses a method of pre ⁇ paring plant substrates based on polyurethane foam sub- stances.
- compressed plant substrates are prepared in finally di ⁇ mensioned plastic film wrappings, said plant substrates being based on hydrophilic, resilient polyurethane foam substances.
- These polyurethane foam substances must be capable of swelling in order to absorb the water supply to such an extent that they fill out the plastic film wrappings completely.
- hydrophobic polyurethane foa since the use of the hydrophilic polyurethane foam in- volves considerable problems.
- rockwool ⁇ products are encumbered with the essential drawback that sufficient ventilation is difficult to obtain, whereby it is almost impossible to avoid root rot, said rockwool ⁇ products to a great extent being used as plant culture substrates and exactly characterised by being highly hydrophilic .
- hydrophobic polyurethane foam overcomes the above drawbacks concerning root rot arising when using the hydrophilic polyurethane foam. This is due to the fact that the material upon moistening contains the necessary amount of air. Moreover the material is pleas ⁇ ant to work with and does not irritate the skin. Fur ⁇ thermore it can be stored in compressed condition be- fore the use.
- the hydrophobic polyurethane foam presents the problem that as a consequence of its hydrophobic nature it is difficult to moisten and it does not provide the capillarity sufficient for obtain ⁇ ing the necessary water retentiveness.
- the object of the present is to provide an inert growth medium based on resilient polyurethane foam, which meets the above requirements concerning sufficient content of air, sufficient water retentiveness, and absence of sub- stances irritating the skin.
- the growth medium according to the in ⁇ vention is characterised in that the polyurethane foam is hydrophobic, and that it contains natural fibres, preferably in an amount of 10-70% by weight calculated on the end product, in order to obtain an optimal water retentiveness.
- granulated paper preferably in an amount of 40-60% by weight, or disintegrated pulp (fluff) , preferably in an amount of 25-35% by weight.
- a moistening agent preferably a non-ionic active moistening agent a the preparation of the growth medium.
- the growth medium dealt with may for instance advanta- geously be used as growth medium for plants on root, which are to be exported or imported, as growth medium for ornamental plants on root for use in hospitals, and as growth medium for plants for energy forests.
- the cellulosic fluff used contained disintegrated pulp of the same type that is used in nap ⁇ pies.
- the prepolymer was a binding agent comprising 100 parts of polyetherpolyol with an OH-value of 43 togethe with 20 parts of toluene diisocyanate. Prior to the use the mixture had been prereacted for 48 hours at room temperature.
- Berol 087 is a non-ionic active moistening agent from Berol Kemi AB.
- Granulated polyurethane and cellulosic fluff were mixed in a mixer.
- a solution of "Berol” 087 was supplied by means of a spray gun, and finally diluted prepolymer was supplied by means of a spray gun.
- the dilution was performed by Freon 11, which later on evaporated upon the spraying.
- the mixture was transferred into a 8 liter mould, and superheated steam was supplied for 2 minutes, whereupon the completed sample was removed after further 5 minutes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Cultivation Of Plants (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Hydroponics (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8002860 | 1980-04-16 | ||
| SE8002860A SE8002860L (sv) | 1980-04-16 | 1980-04-16 | Inert vextmedium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0050140A1 true EP0050140A1 (en) | 1982-04-28 |
Family
ID=20340749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP81901150A Withdrawn EP0050140A1 (en) | 1980-04-16 | 1981-04-13 | An inert growth medium and method for its preparation |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0050140A1 (https=) |
| JP (1) | JPS57500451A (https=) |
| AU (1) | AU7152781A (https=) |
| ES (1) | ES8206143A1 (https=) |
| GB (1) | GB2084981A (https=) |
| NL (1) | NL8120117A (https=) |
| NO (1) | NO814288L (https=) |
| SE (1) | SE8002860L (https=) |
| WO (1) | WO1981002968A1 (https=) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102020800B (zh) * | 2009-09-15 | 2013-07-17 | 上海永冠胶粘制品有限公司 | 造粒工艺中的原料配比及其方法 |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8900523A (nl) * | 1989-03-03 | 1990-10-01 | Digema Recycling | Bodemverbeterende op polyurethaan gebaseerde materialen. |
| GB9103636D0 (en) * | 1991-02-21 | 1991-04-10 | Jenkinson John | Horticultural growth media |
| DE4208733A1 (de) * | 1992-03-18 | 1993-09-23 | Gruenzweig & Hartmann | Aufwuchsmedium fuer pflanzen sowie verfahren zu dessen herstellung |
| FR2689366B1 (fr) * | 1992-04-02 | 1995-01-20 | Pierre Bono | Support de culture alvéolaire et Biodestructible à base d'une charge active la lignine et de polyuréthane. |
| SE502680C2 (sv) * | 1993-03-30 | 1995-12-04 | Vaestsallat Ab | Upprullbart odlingssubstrat innehållande massafibrer |
| EP0962129B1 (en) * | 1998-06-05 | 2003-03-12 | Piet W. Houtepen | Solid substrate composition |
| WO2025078451A1 (de) * | 2023-10-09 | 2025-04-17 | Stender GmbH | Verwendung eines faserschaums zur pflanzenkultivierung, fraktionierter faserschaum und setzling auf basis eines faserschaums |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2867944A (en) * | 1954-04-20 | 1959-01-13 | Agronomists Res Corp | Method of treating soil by non-ionic surface active agents |
| DE1227724B (de) * | 1963-06-20 | 1966-10-27 | Heinrich Fruhstorfer | Schaumstoffplatte mit eingearbeiteten Samenkoernern od. dgl. |
| GB1011910A (en) * | 1963-10-01 | 1965-12-01 | Proplasto A G | Plant culture media |
| US3467609A (en) * | 1966-08-16 | 1969-09-16 | American Can Co | Plant growth medium |
| BE757224A (fr) * | 1969-10-08 | 1971-03-16 | Bayer Ag | Substrats actifs pour la culture des vegetaux |
| DE2054823A1 (de) * | 1970-11-07 | 1972-05-10 | Farbenfabriken Bayer Ag, 5090 Leverkusen | Verfahren zur Herstellung von Pflanzensubstraten |
| CA954685A (en) * | 1971-01-16 | 1974-09-17 | Labofina S.A. | Process for the improvement of the constitution of soils |
| US4196543A (en) * | 1974-05-29 | 1980-04-08 | Gravi-Mechanics Co. | Rooting media and methods of making the same |
-
1980
- 1980-04-16 SE SE8002860A patent/SE8002860L/ not_active Application Discontinuation
-
1981
- 1981-04-13 WO PCT/DK1981/000034 patent/WO1981002968A1/en not_active Ceased
- 1981-04-13 JP JP56501351A patent/JPS57500451A/ja active Pending
- 1981-04-13 EP EP81901150A patent/EP0050140A1/en not_active Withdrawn
- 1981-04-13 AU AU71527/81A patent/AU7152781A/en not_active Abandoned
- 1981-04-13 NL NL8120117A patent/NL8120117A/nl unknown
- 1981-04-13 GB GB8135097A patent/GB2084981A/en not_active Withdrawn
- 1981-04-15 ES ES502079A patent/ES8206143A1/es not_active Expired
- 1981-12-15 NO NO814288A patent/NO814288L/no unknown
Non-Patent Citations (1)
| Title |
|---|
| See references of WO8102968A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102020800B (zh) * | 2009-09-15 | 2013-07-17 | 上海永冠胶粘制品有限公司 | 造粒工艺中的原料配比及其方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| AU7152781A (en) | 1981-11-10 |
| WO1981002968A1 (en) | 1981-10-29 |
| NL8120117A (https=) | 1982-03-01 |
| ES502079A0 (es) | 1982-09-01 |
| NO814288L (no) | 1981-12-15 |
| JPS57500451A (https=) | 1982-03-18 |
| GB2084981A (en) | 1982-04-21 |
| ES8206143A1 (es) | 1982-09-01 |
| SE8002860L (sv) | 1981-10-17 |
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| Bunt | Physical aspects |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Designated state(s): FR |
|
| 17P | Request for examination filed |
Effective date: 19820218 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
| 18W | Application withdrawn |
Withdrawal date: 19830406 |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: KRONBORG, HANSEN ALBERT |