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WO1996009348A2 - Composition polymere, son procede de fabrication et son utilisation - Google Patents

Composition polymere, son procede de fabrication et son utilisation Download PDF

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Publication number
WO1996009348A2
WO1996009348A2 PCT/EP1995/003577 EP9503577W WO9609348A2 WO 1996009348 A2 WO1996009348 A2 WO 1996009348A2 EP 9503577 W EP9503577 W EP 9503577W WO 9609348 A2 WO9609348 A2 WO 9609348A2
Authority
WO
WIPO (PCT)
Prior art keywords
composition according
polymer composition
zinc oxide
light
films
Prior art date
Application number
PCT/EP1995/003577
Other languages
German (de)
English (en)
Other versions
WO1996009348A3 (fr
Inventor
Marcel Janssens
Original Assignee
A. Schulman Plastics N.V.
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 A. Schulman Plastics N.V. filed Critical A. Schulman Plastics N.V.
Priority to EP95933360A priority Critical patent/EP0729489A1/fr
Publication of WO1996009348A2 publication Critical patent/WO1996009348A2/fr
Publication of WO1996009348A3 publication Critical patent/WO1996009348A3/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/34—Heterocyclic compounds having nitrogen in the ring
    • C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
    • C08K5/3432—Six-membered rings
    • C08K5/3435—Piperidines

Definitions

  • the invention relates to a polymeric composition with pesticide-resistant and light-stable properties, a process for its preparation and use as a film for greenhouses. Another object of the invention is a film which is produced from the polymeric composition.
  • HALS Hlingerd Amine Light Stabilizers
  • UV-light-absorbing substances such as benzophenone or benzotriazole.
  • LDPE low density polyethylene
  • ethylene-vinyl acetate copolymers are generally used alone or in combination with low density polyethylene or linear low density polyethylene (LLDPE).
  • LLDPE linear low density polyethylene
  • the films for greenhouses can be produced as single-layer or co-extruded multilayer films.
  • the technical object of the invention is therefore to provide a composition which, despite its zinc oxide content, enables the production of a transparent film and in which the decomposition of the alkylated amines by pesticides is not possible.
  • a polymeric composition with pesticide-resistant and light-stable properties which, in addition to the commonly used polyethylene resin and / or ethylene-vinyl acetate copolymer and the alkylated amine as light stabilizer, contains micronized zinc oxide particles with a particle diameter of 10 to 200 nm.
  • the polymeric composition contains an ethylene-vinyl acetate copolymer in combination with low density polyethylene or linear low density polyethylene.
  • An alkylated amine of the formulas I or II is preferably used as the light stabilizer. These are so-called HALS (Hlingerd Amin Light Stabilizers).
  • the micronized zinc oxide particles particularly preferably have a particle diameter of 20 to 60 nm and can be used in amounts of 0.01 to 1% by weight.
  • the alkylated amines are used in amounts of 0.1 to 2% by weight.
  • the polymeric composition according to the invention can furthermore contain customary antioxidants, antiblocking agents, inorganic, infrared-shielding fillers and anti-thawing agents.
  • the antioxidants are added to improve the thermal stability of the polymer.
  • the antiblocking agents are added to make it easier to unfold the folded film.
  • the infrared shielding fillers are said to reduce heat loss during the night in the greenhouses. Natural kaolins or natural silicon oxides are generally used for this. Anti-thaw agents are added to reduce moisture condensation, which reduces the translucency of these transparent films. In general, high molecular weight fatty acid esters are used for this.
  • Another object of the invention is a method for producing the polymeric composition, wherein the individual components are mixed, heated, melted and granulated after cooling.
  • the polymeric compositions according to the invention can also be produced in highly concentrated form as a granulated masterbatch, which is then processed with the addition of further polymeric base materials.
  • Rose films in greenhouses can be improved with the films produced in a conventional manner from the polymer composition according to the invention, since the
  • Plants can be better protected from the "Botrytis” rose disease.
  • the growth of the pests causing this disease is stimulated by UV light with a wavelength of 370 nm. UV light in particular However, this wavelength is absorbed by the zinc oxide particles in the film according to the invention.
  • a single-layer film with a diameter of 180 ⁇ m was produced from low-density polyethylene with a melt index of 0.3 and various proportions of micronized zinc oxide with a diameter of 60 nm and alkylated amines.
  • the commercial products from Ciba-Geigy Chimassorb 944 (Formula I) and Chimassorb 119 (Formula II) were used as amines.
  • Resistance to pesticides was measured by spraying the known pesticide "permethrin" onto the samples once a month. The samples were then exposed to a Xenotest 1200 (2) (UV tester from Hanau). This is a test in which the samples are exposed to the annual UV radiation within a short time. This allows the aging process of the film to be simulated in a short time.
  • the residual elongation at break was then determined as a measure of the degree of aging of the film. The results are given in kLy (kiloLangley) up to 50% residual expansion.
  • the samples sprayed with "permethrin” and unsprayed were treated in a separate device to prevent contamination. A 1% emulsion of "permethrin” in ethanol / hexane (ratio 9: 1) was used.
  • the Xenotest was set to 70 ° C operating temperature in the device (black panel temperature) and a rela tive air humidity of 60%. The samples were fixed on plexiglass. Table 1 shows the composition of the films produced, Table 2 shows the results of the measurements for the films assembled according to Table 1.
  • Zinc stearate was used as a processing aid.
  • Coextruded multilayer films with a diameter of 180 ⁇ m were produced, which essentially consist of an ethylene-vinyl acetate copolymer with a
  • Layer A is a base resin of low density polyethylene that
  • Layer B is a base resin of ethylene-vinyl acetate copolymer with a vinyl acetate content of 12% by weight.
  • Layer C is identical to layer B.
  • anti-thaw agents and infrared absorbing additives are added as follows (all figures in% by weight):
  • Table 3 shows the composition of the individual films.
  • Table 4 shows the properties.
  • Zinc stearate was added as a processing aid.
  • the films which have micronized zinc oxide with a diameter of 60 nm have excellent properties with regard to light transmission and also maintain stability when treated with pesticides. As a result, they are superior to films that contain zinc oxide with a diameter of 1 ⁇ m and also to films that do not contain zinc oxide at all.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Greenhouses (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L'invention a pour objet une composition polymère résistant aux pesticides et stable à la lumière, contenant une résine de polyéthylène et/ou un copolymère éthylène/acétate de vinyle, des particules d'oxyde de zinc micronisées de diamètre compris entre 10 et 200 nm, ainsi qu'une amine alkylée servant d'agent de stabilisation à la lumière. L'invention a également pour objet un procédé de fabrication de cette composition, l'utilisation de cette composition dans des feuilles pour serres, ainsi qu'une feuille produite à partir de cette composition polymère.
PCT/EP1995/003577 1994-09-16 1995-09-12 Composition polymere, son procede de fabrication et son utilisation WO1996009348A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP95933360A EP0729489A1 (fr) 1994-09-16 1995-09-12 Composition polymere, son procede de fabrication et son utilisation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19944433018 DE4433018C1 (de) 1994-09-16 1994-09-16 Polymere Zusammensetzung, Verfahren zu ihrer Herstellung und eine Verwendung
DEP4433018.9 1994-09-16

Publications (2)

Publication Number Publication Date
WO1996009348A2 true WO1996009348A2 (fr) 1996-03-28
WO1996009348A3 WO1996009348A3 (fr) 1996-06-20

Family

ID=6528384

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1995/003577 WO1996009348A2 (fr) 1994-09-16 1995-09-12 Composition polymere, son procede de fabrication et son utilisation

Country Status (3)

Country Link
EP (1) EP0729489A1 (fr)
DE (1) DE4433018C1 (fr)
WO (1) WO1996009348A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000050504A1 (fr) * 1999-02-23 2000-08-31 Bayer Aktiengesellschaft Composites plastique contenant des oxydes metalliques

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60017018T2 (de) 2000-04-28 2005-12-08 Ministèro dell' Universita' e della Ricerca Scientifica e Tecnologica Vorrichtung zur Unterstützung der Funktion einer Herzkammer
US6337362B1 (en) * 2000-06-12 2002-01-08 Elementis Specialties, Inc. Ultraviolet resistant pre-mix compositions and articles using such compositions
EP1609816A1 (fr) * 2004-06-25 2005-12-28 A. Schulman Plastics Composition de mélange mère contenant d'oxyde de zinc nanoparticulaire pour la fabrication de films de polyolèfine transparent ayant des propriétés de barrière contre les UV

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6216356A (ja) * 1985-07-05 1987-01-24 テイカ株式会社 機能性合成樹脂フイルム
IT1215455B (it) * 1987-05-05 1990-02-14 Ciba Geigy Spa Composizione stabilizzante per polietilene comprendente composti contenenti gruppi piperidinici e composti metallici
EP0429731A1 (fr) * 1989-12-01 1991-06-05 At Plastics Inc. Composition, et son utilisation en films
US5352725A (en) * 1991-09-27 1994-10-04 Kerr-Mcgee Chemical Corporation Attenuation of polymer substrate degradation due to ultraviolet radiation
IT1269953B (it) * 1994-06-27 1997-04-16 Ciba Geigy Spa Films di poliolefine o copolimeri di olefine con migliorata stabilita' alla luce e resistenza agli insetticidi

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000050504A1 (fr) * 1999-02-23 2000-08-31 Bayer Aktiengesellschaft Composites plastique contenant des oxydes metalliques

Also Published As

Publication number Publication date
DE4433018C1 (de) 1996-04-25
EP0729489A1 (fr) 1996-09-04
WO1996009348A3 (fr) 1996-06-20

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