DE2812923A1 - Polyurethane plant pot, seed tape or soil loosening granules - contain quick lime and polyester poly:ol in cell structure to make compsn. degradable in use - Google Patents

Polyurethane plant pot, seed tape or soil loosening granules - contain quick lime and polyester poly:ol in cell structure to make compsn. degradable in use

Info

Publication number
DE2812923A1
DE2812923A1 DE19782812923 DE2812923A DE2812923A1 DE 2812923 A1 DE2812923 A1 DE 2812923A1 DE 19782812923 DE19782812923 DE 19782812923 DE 2812923 A DE2812923 A DE 2812923A DE 2812923 A1 DE2812923 A1 DE 2812923A1
Authority
DE
Germany
Prior art keywords
cell structure
granules
polyurethane foam
degradable
polyurethane
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.)
Pending
Application number
DE19782812923
Other languages
German (de)
Inventor
Heinrich-Josef Ing Grad Uphoff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Uphoff Josef & Soehne
Original Assignee
Uphoff Josef & Soehne
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Uphoff Josef & Soehne filed Critical Uphoff Josef & Soehne
Priority to DE19782812923 priority Critical patent/DE2812923A1/en
Publication of DE2812923A1 publication Critical patent/DE2812923A1/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0066—Use of inorganic compounding ingredients
    • 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
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
    • A01G9/029—Receptacles for seedlings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Environmental Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Cultivation Of Plants (AREA)
  • Cultivation Receptacles Or Flower-Pots, Or Pots For Seedlings (AREA)

Abstract

Polyurethane moulding, in the form of a vessel, tape or spherical particles with a density of 15-800 g/dm3, contains quicklime and polyester polyols in the cell structure, which cause swelling of the surface of the moulding and hence moisture absorption, the cell structure and the chemical structure undergoing continuous disintegration due to the quicklime. The prod. can be used for plant pots, tapes, contg. seeds and granules for loosening soil, since the required rate of rotting can be ensured. The quicklime and polyester polyol or other substance imparting water absorption are added to one of the components before foaming.

Description

Schaumstoff-Formkörper aus Polyurethan und Verfahren zu deren Herstellung Die Erfindung bezieht sich auf Schaumstoff-Formkörper aus Polyurethan und Verfahren zu deren Herstellung. Foam moldings made of polyurethane and process for their production The invention relates to polyurethane foam moldings and processes for their production.

Schaumstoff-Formkörper aus Polyurethan werden vielfach zur Wärmeisolierung verwendet. Polyurethan-Hartschäume eig-nen sich jedoch auch; zur Ijersteltung von Schaumstoff-Formkörpern, wie Pflanzenbehültern, Saatgut enthaltenden Bändern und Kugeln zur Bodenauflockerung, bi denn eine baldige Verrottung erwünscht wäre Der vorliegenden Erfindung liegt die Aufgabe zugrunde, Polyurethan-Schaumstoff-Formkörper und Verfahren zu deren Herstellung anzugeben, die eine Verrottung der Polyurethan-Schaumstoff-Formkörper in gewünsehter Geschwindigkeit gewahrleisten.Foam moldings made of polyurethane are often used for thermal insulation used. However, rigid polyurethane foams are also suitable; for the creation of Foam molded bodies, such as plant containers, strips containing seeds and Balls to loosen the soil, because an early rotting would be desirable The present invention is based on the object of polyurethane foam moldings and to specify a method for their production that causes rotting of the polyurethane foam moldings ensure at the desired speed.

Erfindungsgemäß zeichnen sich Polyurethan-Schaumstoff-Formkörper in Form eines Gefäßes, Bandes oder von Kügelchen mit einer Dichte von 15 g/dm3 bis 800 g/dm3 durch einen Gehalt an ungelöschtem Kalk und Polyesterpolyolen in der Zellstruktur aus, die ein Anquellen der Oberfläche der Polyurethan-Schaumstoff-Formkörper und damit eine Feuchtigkeitsaufnahme bewirken, aufgrund der durch den ungelöschtcn Kalk die Zellstruktur und der chemische Aufbau der Polyurethan-Schaumstoff-Formkörper einem fortschreitendem Abbau unterliegen.According to the invention, polyurethane foam moldings are distinguished in Shape of a vessel, ribbon or spheres with a density of 15 g / dm3 to 800 g / dm3 due to the content of quicklime and polyester polyols in the cell structure from that a swelling the surface of the molded polyurethane foam body and thus cause moisture absorption, due to the undeleted Lime the cell structure and the chemical structure of the polyurethane foam moldings are subject to progressive degradation.

Derartige Formkörper lassen sich in einfacher Weise dadurch herstellen, daß vor der Polyurethanschaumstoffbildung aus der Zusammenwirkung von zwei Komponenten einer dieser Komponenten ungelöschter Kalk und Polyesterpolyole oder dergleichen wasseraufnahmefähig machende Substanzen zugesetzt werden.Such molded bodies can be produced in a simple manner by that before the polyurethane foam formation from the interaction of two components one of these components, unslaked lime and polyester polyols or the like Substances that make water absorbent are added.

In der Zeichnung ist ein erfindungsgemäß aus verrottbarem Polyurethan bestehender sogenannter verlorener Pflanzentopf im Schnitt darg(stellt .In the drawing, according to the invention, is made of rotting polyurethane existing so-called lost plant pot in section.

Dieser Pflanzentopf verrottet, wenn er mit der Pflanze in den Boden eingesetzt wird.This plant pot will rot when it gets into the ground with the plant is used.

Die Geschwindigkeit der Verrottung kann durch die Menge der Zugaben an ungelöschtem Kalk und Polyesterpolyolen vorgegeben werden.The rate of rotting can be influenced by the amount of additions of unslaked lime and polyester polyols.

Die Verrottung beginnt, indem aus der Bodengare Wasser in die für fähig Wasser quell gemachte Schaumstruktur eindringt und mit dem gelöschten Kalk reagiert. Dabei kommt es zu einer fortschreitenden Zerstörung der Zellstruktur Die abgestoßenenZellstrukturteilchen unterliegen dann ihrerseits wieder einem Abbau durch im Boden vorhandene Mikroorganismen, so daß eine rückstandsfreie Verrottung erfolgt.The rotting begins by adding water to the for from the bottom cooker The foam structure made capable of swelling water penetrates and with the slaked lime reacted. This leads to a progressive destruction of the cell structure Repelled cellular structure particles are then in turn subject to degradation due to microorganisms present in the soil, so that residue-free rotting he follows.

L e e r s e i t eL e r s e i t e

Claims (2)

Patentansprüche 1. Polyurethan-Schaumstoff-Formkörper in Form eines Gefäßes, Bandes oder von Kügelchen mit einer Dichte von 15 g/dm3 bis 8oo g/dm³, g e k e n n z e i c h n e t d u r c h einer Gehalt an ungelöschtem Kalk und Polyesterpolyolen in der Zellstruktur, die ein Anquellen der Oberfläche der Polyurethan-Schaumstolfo Formkörper und damit eine Feuchtigkeitsaufnahme bewirken, aufgrund der durch den ungelöschten Kalk die Zellstruktur und der chemische Aufbau der Polyurethan-Schaumstoff-Formkörper einem fortschreitenden Abbau unterliegt. Claims 1. Polyurethane foam molded body in the form of a Vessel, tape or beads with a density of 15 g / dm3 to 8oo g / dm³, not indicated by a content of unslaked lime and polyester polyols in the cell structure that causes swelling of the surface of the polyurethane foam stolfo Shaped body and thus cause moisture absorption, due to the unslaked lime the cell structure and the chemical structure of the polyurethane foam moldings is subject to progressive degradation. 2. Verfahren zur Herstellung von Polyurethan-Schaumstoff-Formkö nach Anspruch 1 in einer Form,dadurch gekennzeichnet, vor der Polyurethanschaumstoffbildung aus der Zusammenwirkung von zwei Komponenten einer dieser Komponenten ungelöschter Kalk und Polyesterpolyole oder dergleichen wasseraufnahmefähig machende Substanzen zugesetzt werden2. Process for the production of molded polyurethane foam according to Claim 1 in a form, characterized in that before the polyurethane foam is formed from the interaction of two components one of these components is not deleted Lime and polyester polyols or similar substances which make them water-absorbent can be added
DE19782812923 1978-03-23 1978-03-23 Polyurethane plant pot, seed tape or soil loosening granules - contain quick lime and polyester poly:ol in cell structure to make compsn. degradable in use Pending DE2812923A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19782812923 DE2812923A1 (en) 1978-03-23 1978-03-23 Polyurethane plant pot, seed tape or soil loosening granules - contain quick lime and polyester poly:ol in cell structure to make compsn. degradable in use

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782812923 DE2812923A1 (en) 1978-03-23 1978-03-23 Polyurethane plant pot, seed tape or soil loosening granules - contain quick lime and polyester poly:ol in cell structure to make compsn. degradable in use

Publications (1)

Publication Number Publication Date
DE2812923A1 true DE2812923A1 (en) 1979-10-04

Family

ID=6035366

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782812923 Pending DE2812923A1 (en) 1978-03-23 1978-03-23 Polyurethane plant pot, seed tape or soil loosening granules - contain quick lime and polyester poly:ol in cell structure to make compsn. degradable in use

Country Status (1)

Country Link
DE (1) DE2812923A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1210866A2 (en) * 2000-12-04 2002-06-05 Blieninger Holzspäne GmbH Pressed moulded body
CN105475033A (en) * 2015-12-22 2016-04-13 山东农业大学 Disposable degradable seedling raising device made of plant straw

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1210866A2 (en) * 2000-12-04 2002-06-05 Blieninger Holzspäne GmbH Pressed moulded body
EP1210866A3 (en) * 2000-12-04 2004-03-03 Blieninger Holzspäne GmbH Pressed moulded body
CN105475033A (en) * 2015-12-22 2016-04-13 山东农业大学 Disposable degradable seedling raising device made of plant straw

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