WO2000052997A1 - Materiau de revetement en resine synthetique a usage agricole - Google Patents

Materiau de revetement en resine synthetique a usage agricole Download PDF

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Publication number
WO2000052997A1
WO2000052997A1 PCT/JP1999/001104 JP9901104W WO0052997A1 WO 2000052997 A1 WO2000052997 A1 WO 2000052997A1 JP 9901104 W JP9901104 W JP 9901104W WO 0052997 A1 WO0052997 A1 WO 0052997A1
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Prior art keywords
group
synthetic resin
carbon atoms
fluorine
coating material
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PCT/JP1999/001104
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English (en)
Japanese (ja)
Inventor
Genichirou Enna
Hiroki Fukuda
Naoyuki Shimeno
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Asahi Glass Company Ltd.
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 Asahi Glass Company Ltd. filed Critical Asahi Glass Company Ltd.
Priority to KR1020007004630A priority Critical patent/KR20010040266A/ko
Priority to PCT/JP1999/001104 priority patent/WO2000052997A1/fr
Priority to CNB998015938A priority patent/CN1139639C/zh
Publication of WO2000052997A1 publication Critical patent/WO2000052997A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
    • C08L71/02—Polyalkylene oxides
    • 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
    • A01G9/14—Greenhouses
    • A01G9/1438—Covering materials therefor; Materials for protective coverings used for soil and plants, e.g. films, canopies, tunnels or cloches
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/26—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
    • C08G65/2639—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing elements other than oxygen, nitrogen or sulfur
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/25—Greenhouse technology, e.g. cooling systems therefor

Definitions

  • the present invention relates to a synthetic resin coating material for agriculture, and more specifically, an ability to suppress fogging generated on the inner surface of the coating material and to suppress a fog phenomenon near the inner surface of the coating material (this ability is referred to as anti-fog property).
  • the present invention relates to an agricultural synthetic resin coating material having an ability to exhibit an excellent antifogging effect over a long period of time (this ability is referred to as antifogging durability).
  • Technological background In recent years, so-called greenhouses, in which useful plants are fortified, semi-primed or suppressed under a synthetic resin coating for agricultural use, such as agricultural vinyl film, to increase the productivity and marketability of useful plants. Cultivation and tunnel cultivation are actively performed.
  • This phenomenon of fog often occurs from late autumn to winter, which is the most important for greenhouse and tunnel cultivation.
  • the cause of the fog phenomenon is not known exactly, but the temperature and humidity in the house or tunnel, the temperature of the soil in the house or tunnel, the water content, the amount of solar radiation in the house or tunnel, the hydrophilicity of the wet surface of the coating material.
  • the phenomenon that the moisture inside the house or tunnel adheres to the surface of the coating material due to temperature changes and does not flow smoothly does not occur smoothly, and some of the warm air is close to the inner surface of the coating material. It is presumed to be due to fog around.
  • Such fog formation occurs near the ground surface in a house or tunnel, near cultivated plants, and near the inner surface of the covering.
  • the coating material and the inner surface of the coating material are cooled by a decrease in the outside air temperature and a temperature difference is generated between the coating material and the inside of the house, and the warm and moist air in the house moves to the vicinity of the coating material inner surface by natural convection,
  • the water vapor that cannot be contained in the air condenses and becomes small water droplets, ie, mist, which naturally convects and spreads in the house or the tunnel.
  • mist Once the mist-like micro water droplets evaporate and disappear again in the middle of natural convection, the mist does not spread into the house or tunnel, but if the evaporation and elimination speed is slow, the entire house or tunnel Covered in dense fog.
  • Such a fog phenomenon wets leaves, stems, flowers, fruits, and the like of useful plants cultivated in a house or a tunnel, and causes a disease to occur, and also causes the disease to spread.
  • heat is required to dry the wet plants, so that more fuel is needed to heat the house or tunnel.
  • the outlook inside the house is worsened, and there is also an adverse effect such as a decrease in the efficiency of agricultural work.
  • a colored agricultural synthetic resin film was used to soften the temperature change in the house or tunnel even a little, or the soil in the house or tunnel was covered with a mulching film to reduce the amount of water evaporation.
  • Some measures have been taken, such as devising the irrigation method (for example, watering late in the evening, adjusting the irrigation part and irrigation volume), and improving the irrigation equipment.
  • devising the irrigation method for example, watering late in the evening, adjusting the irrigation part and irrigation volume
  • improving the irrigation equipment was sufficient to completely control the fog phenomena.
  • An object of the present invention is to provide a synthetic resin coating material for agriculture, which has an ability to suppress the fog generation phenomenon near the inner surface of the coating material (fog resistance) and has excellent antifogging durability. Disclosure of the invention The present invention provides an agricultural synthetic resin coating material containing a fluorine-containing compound represented by the following formula 1 and an antifogging agent.
  • R f a polyfluoroaliphatic hydrocarbon group having 1 to 22 carbon atoms.
  • Q a linear or branched alkylene group having 1 to 5 carbon atoms.
  • n an integer from 1 to 100.
  • A an alkylene group having 2 to 4 carbon atoms, wherein a hydrogen atom of the alkylene group may be substituted with an aromatic hydrocarbon group, an alkoxy group or a phenoxy group.
  • n is 2 to 100, A may be the same or different.
  • R a hydrogen atom, a hydrocarbon group having 1 to 18 carbon atoms or an acyl group having 1 to 18 carbon atoms.
  • the "hydrocarbon group” in the present invention means a hydrocarbon group consisting of only carbon atoms and hydrogen atoms in principle, and includes "aliphatic hydrocarbon group” and "aromatic hydrocarbon group”. Group).
  • the aliphatic hydrocarbon group an alkyl group and an alkenyl group are preferable.
  • One or more hydrogen atoms of the aliphatic hydrocarbon group may be substituted with an aromatic hydrocarbon group, such as a benzyl group.
  • an aromatic hydrocarbon group a phenyl group is preferable.
  • the fluorine-containing compound of the present invention is represented by the following formula 1.
  • R f in Formula 1 represents a polyfluoroaliphatic hydrocarbon group (hereinafter, referred to as an R f group) having 1 to 22 carbon atoms.
  • the Rf group is a group in which two or more hydrogen atoms in an aliphatic hydrocarbon group have been substituted with fluorine atoms.
  • the R f group preferably has 1 to 16 carbon atoms, and preferably has 1 to 16 carbon atoms, and particularly preferably 6 to 14 carbon atoms.
  • the number of fluorine atoms in the R f group may, be represented by (number of fluorine atoms in the R f group) / (hydrogen atom in the aliphatic hydrocarbon group having the same carbon number corresponding to the R f group) XI 00 ⁇ %) In this case, it is preferably at least 60%, particularly preferably at least 80%.
  • the R f group preferably has a linear structure or a branched structure, and particularly preferably has a linear structure. In the case of a branched structure, the branched portion is preferably a short chain having about 1 to 3 carbon atoms, and is preferably present at the terminal of the Rf group.
  • the R f group is a perfluoroaliphatic hydrocarbon group (hereinafter, referred to as an R F group), and preferably has a linear structure.
  • R F group is a group which substantially all of the hydrogen atoms in the R f group substituted by fluorine atom. That is, the R f group is preferably a group represented by F (CF 2 ) m — (m is an integer of 1 to 18). m is preferably from 4 to 16, and particularly preferably from 6 to 14.
  • the straight-chain R F group is a telomerization with C 2 F 5 I tetrafluoroethylene
  • the branched alkyl group is a fluorine-containing monomer such as tetrafluoroethylene or hexafluoropropylene with KF, It can be obtained by oligomerization with a catalyst such as CsF.
  • the fluorine-containing compound may be a mixture of two or more compounds having different carbon numbers in the R ′ group.
  • a mixture containing a fluorine-containing compound having 6 to 4 carbon atoms of the FT group as a main component and having an average carbon number of 8 to 10 for the Rf group is preferable.
  • Q in the fluorine-containing compound is a linear or branched alkylene group having 1 to 5 carbon atoms.
  • the carbon number of Q is preferably 2, 3 or 4, and particularly preferably 3 or 4.
  • the fluorine-containing compound in which Q is an alkylene group having 3 or 4 carbon atoms is a compound having excellent chemical stability and heat resistance even in various environments when used as a synthetic resin coating material.
  • the Q for example, ethylene group, preparative Rimechiren group, tetramethylene group, propylene alkylene group (- CH (CH 3) CH 2 -), butylene (- CH (CH 3) CH 2 CH 2 -, - CPCH (CH 3) CH 2 -, - CH (CH 3) CH (CH 3) -) and the like.
  • R f may be bonded to either bond.
  • N in the fluorinated compound represents an integer of 1 to 1 0, preferably 2 to 50. Even when the fluorine-containing compound of the present invention is a mixture of two or more compounds having different numbers of n, the average value of n is preferably in the range of 1 to 50, and more preferably 2 to 3 Is preferably within the range.
  • a in the fluorine-containing compound is an alkylene group having 2 to 4 carbon atoms, and a hydrogen atom of the alkylene group may be substituted with an aromatic hydrocarbon or an alkoxy group.
  • an ethylene group, tetramethylene group, propylene group, one CH (C s H 5) CH 2 -, - CH (CH 2 OR 1) , such as CH 2 one can be cited.
  • a has an asymmetric structure for example, a propylene group
  • its directionality is not limited.
  • Shi R 1 represents an alkyl group of 1 to 1 0 carbon atoms, and R 1 is a methyl group, butyl group, hexyl group are preferable to the 2- Echiru.
  • n 2 to 100
  • the two or more A may be the same or different.
  • A is preferably two or three, and particularly preferably two.
  • a in the fluorine-containing compound is preferably one or two, and particularly preferably two of an ethylene group and a propylene group.
  • (A-0) n is an oxyalkylene group or a polyoxyalkylene group obtained by a ring-opening addition reaction of a cyclic ether.
  • cyclic ether a compound containing a 3- to 5-membered cyclic ether group having one oxygen atom in the ring is suitable, and a compound having one 3-membered cyclic ether group (monoepoxide) is preferable.
  • a compound having one 3-membered cyclic ether group (monoepoxide) is preferable.
  • Particularly preferred is an alkylene oxide having 2, 3 or 4 carbon atoms.
  • cyclic ethers include, for example, ethylene oxide, propylene oxide, 1,2-butylene oxide, 2,3-butylene methoxide, isobutylene oxalate, xysetane, methyloxetane, phenylglycidyl ether, tetrahydrofuran, styrene oxide, Alkyl glycidyl ether and the like.
  • alkyl glycidyl ether include methyl glycidyl ether, butyl glycidyl ether, 2-ethylhexyl glycidyl ether and the like.
  • Preferred cyclic ethers are ethylene oxide, propylene oxide and tetrahydrofuran.
  • a formed by ring opening of tetrahydrofuran is a tetramethylene group.
  • One or more cyclic ethers can be used, and it is preferable to use one or more kinds. .
  • a mixture of two or more cyclic ethers may be used for the reaction, or two or more cyclic ethers may be used for the reaction in sequence.
  • R in the fluorine-containing compound represents a hydrogen atom, a hydrocarbon group having 1 to 18 carbon atoms, or an acyl group having 1 to 18 carbon atoms.
  • R is a hydrocarbon group having 1 to 18 carbon atoms
  • an alkyl group having 1 to 18 carbon atoms is preferable, and a methyl group, a linear ethyl group, an n-propyl group, an n-butyl group, n-pentyl group.
  • R is a C1-C18 acyl group
  • the R-acyl group is preferably a C1-C10 acyl group, particularly preferably a C1-C6 acyl group.
  • R is preferably a hydrogen atom or a methyl group, particularly preferably a hydrogen atom.
  • the fluorine-containing compound include, but are not limited to, the following compounds.
  • the portion corresponding to the RF group may have a linear structure or a branched structure, and a linear structure is preferred.
  • their connection may be block or random.
  • the (C 3 H 60) portion represents an oxypropylene group, and represents [CH (CH 3 ) CH 20 ] or [CH 2 CH (CH 3 ) 0].
  • the (H 8 0) moiety indicates that it is a ring-opened product as tetrahydrofuran (CH 2 CH 2 CH 2 CH 2 0).
  • the fluorine-containing compounds in the present invention can be used alone or in combination of two or more.
  • the fluorine-containing compound of the present invention can be obtained by subjecting R f QOH to a ring-opening addition reaction with a cyclic ether.
  • Examples of a method for synthesizing R f (CH 2 ) 2 O having 2 carbon atoms in Q include a method in which ethylene is inserted into the R F I and the terminal iodine is substituted with a hydroxyl group.
  • an isomer of the compound 4 carbon atoms a method of synthesizing R f CH 2 CH 2 CH 2 (OH) CH 3 , said R F CH - a CH 2, of Jo Tokoro in a large amount of an ethanol solvent
  • a method of adding a radical initiator, stirring while heating, and adding ethanol by a radical addition reaction to obtain the mixture.
  • Fluorine-containing compound is typically generated by a mixture of cyclic ether and R f QO H is reacted in the presence of a catalyst.
  • the reaction can also be performed while gradually adding a cyclic ether to the reaction system.
  • the catalyst is typically KOH and N a OH, but an alkali catalyst such as C S_ ⁇ H can be used, an acid catalyst such as BF 3 in the case of R f Q0 H, a metal complex catalyst, such as complex metal Shiano compound complexes preferably used .
  • a mild alkaline catalyst such as a three-way catalyst such as NaBHZNalZla, or the above-mentioned acid catalyst or metal complex may be used since strong alkali conditions may cause a side reaction of HF removal. It is desirable to use a catalyst.
  • an acid catalyst if the acidity of the catalyst is too strong, hydrogen bonded to the carbon adjacent to the carbon bonded to the fluorine of the R f group may be eliminated, so this HF removal reaction is performed.
  • a diluting solvent may be used, if necessary, in order to suppress the concentration.
  • T can be exemplified by ether solvents such as glyme, diglyme, triglyme, and methyl-t-butyl ether.
  • the reaction temperature for adding the cyclic ether is from 120 to 180 ° C, preferably from 0 to 130 ° C.
  • a diluting solvent having a low boiling point it is preferable to carry out the reaction at a temperature lower than (the boiling point of the solvent + 20) ° C in consideration of an increase in internal pressure.
  • Various properties as a fluorine-containing compound can be adjusted by further modifying the terminal hydroxyl group of the polyoxyalkylene chain thus obtained by esterification or alkylation.
  • the organic carboxylic acids used for the esterification include acetic acid, propionic acid, butanoic acid, 2-ethylhexanoic acid (butyric acid), 3,5,5-trimethylhexanoic acid (isononanoic acid), oleic acid, and stearic acid.
  • Monovalent carboxylic acids such as acids and ester anhydrides of these carboxylic acids with low-boiling alcohols are used.
  • divalent carboxylic acids such as oxalic acid, succinic acid, maleic acid, fumaric acid, and phthalic acid, carboxylic esters, and acid anhydrides thereof can also be used.
  • Esterification converts these carboxylic acids, carboxylic esters or acid anhydrides to hydroxyl.
  • the mixture was stirred while heating without a catalyst or in the presence of a trace acid catalyst such as toluenesulfonic acid or sulfuric acid or an alkali catalyst such as hydroxylated sodium hydroxide or sodium hydroxide. After that, it is carried out by dehydration, dealcoholization or distilling off unreacted acid.
  • Alkylation includes a method of reacting with monohaloalkyl under strong alkaline conditions and a method using alkylsulfuric acid.To suppress the elimination reaction of fluorine, a reaction using an alkylating agent such as alkylsulfuric acid is used. Is more desirable.
  • the fluorine-containing compound thus obtained is preferably purified, if necessary, by an acid treatment using sulfuric acid, phosphoric acid, or the like, or an adsorption treatment using synthetic magnesium, activated clay, activated carbon, or the like.
  • the amount of R f QOH of the initiator to be charged into the reactor varies depending on the amount of the cyclic ether compound to be added, but considering the stirring conditions of the reactor, it is necessary to charge more than 1 Z 10 of the internal volume of the reactor. Is preferred. From the viewpoint of volumetric efficiency, it is desirable that the volume ratio is 80 to 95% after the addition of the cyclic ether, but it is not particularly limited to this. ⁇
  • the amount of the fluorine-containing compound to be mixed into the synthetic resin coating material can be varied over a wide range depending on the type of the fluorine compound to be mixed, the type of the synthetic resin and the like. Generally, the amount is not less than 0.01 parts by weight per 100 parts by weight of synthetic resin (however, plasticizers are not included in the calculation; the same applies hereinafter.) The upper limit is not strictly limited, but the amount is too large. Then, bleeding or white turbidity may occur, so that usually 2.0 parts by weight or less is sufficient. The amount is preferably from 0.02 to 1.0 part by weight per 100 parts by weight of the synthetic resin.
  • the synthetic resin coating material for agriculture of the present invention is blended with an antifogging agent to impart antifogging property.
  • anti-fogging agent anti-fogging agents conventionally used in the field of vinyl chloride resin films for agricultural use are preferable.
  • the antifogging agents used in the present invention include antifogging agent B (antifogging agent derived from polyhydric alcohol and a fatty acid having 10 to 22 carbon atoms) and antifogging agent C (polyhydric alcohol and carbon number An antifogging agent derived from 10 to 22 fatty acids and an alkylene oxide) is preferred. These are compounds in the category of nonionic surfactants.
  • Polyhydric alcohols include sorbitol, mannitol, glycerin, polyg Lyserin, Benyu erythritol, trimethylolpropane and the like.
  • the fatty acid having 10 to 22 carbon atoms may be a straight-chain or branched-chain fatty acid. Specifically, in addition to lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, behenic acid, oleic acid, and other fatty acids, beef tallow, palm oil, rapeseed oil, corn oil, soybean oil, Examples include cottonseed oil, sesame oil, linseed oil, fatty acids obtained from these hardened oils, and mixed fatty acids thereof.
  • alkylene oxide ethylene oxide or ethylene oxide and propylene oxide are preferable, and ethylene oxide is particularly preferable.
  • the anti-fogging agent C a compound obtained by subjecting an ester (having a hydroxyl group) of a polyhydric alcohol and a fatty acid to a ring-opening addition reaction of an alkylene oxide is preferable.
  • the antifogging agent should be selected from those that exhibit antifogging properties even in the low-temperature winter season, are difficult to extract from the coating material even in the high-temperature summer season, and have long-lasting antifogging properties.
  • antifogging durability include polyhydric alcohols such as sorbitol, mannitol or polyglycerin having a degree of condensation of 2 to 10, fatty acids having 16 to 18 carbon atoms, and alkylenes.
  • Antifogging agent B or antifogging agent C which is a nonionic surfactant in which the oxide is derived from ethylene oxide, is exemplified.
  • the number of water molecules released by the intramolecular dehydration condensation reaction of polyhydric alcohol during the esterification reaction of polyhydric alcohol and fatty acid is 2 per molecule of polyhydric alcohol.
  • Molecular ones ie diesters
  • the content of the diester in the mixture is preferably 20 to 80% of the total weight.
  • the total amount of the reaction is 5 mol or less per mol of the polyhydric alcohol.
  • Non-woven surfactants are particularly preferred.
  • the compounding amount of the antifogging agent with respect to the synthetic resin can be equivalent to that used in conventional synthetic resin films for agricultural use. Generally, it is in the range of 1 to 5 parts by weight, preferably 1.5 to 3.5 parts by weight, per 100 parts by weight of the synthetic resin.
  • the synthetic resin constituting the agricultural synthetic resin coating material of the present invention is generally a film.
  • Formable thermoplastic synthetic resins are mentioned. Specifically, monomers such as vinyl chloride, ethylene, propylene, acrylates and methacrylates, or copolymers thereof, or one or more of these monomers and other copolymers Examples thereof include a copolymer with a polymerizable monomer (eg, vinyl acetate, vinylidene chloride, etc.), a fluorine-containing resin, a polyester, a polyamide, and the like, or a blend of these polymers.
  • a polymerizable monomer eg, vinyl acetate, vinylidene chloride, etc.
  • vinyl chloride resin that is, a copolymer containing 50% by weight or more of polymerized units of polyvinyl chloride and vinyl chloride
  • ethylene-based resin That is, polyethylene and a copolymer containing 50% by weight or more of polymerized units of ethylene are preferred, and polyvinyl chloride is most preferred.
  • the agricultural synthetic resin coating material of the present invention may contain ordinary various resin additives, for example, a plasticizer, a lubricant, a heat stabilizer, an antistatic agent, an ultraviolet absorber, a pigment dye, a heat retention improver, and the like. It may be included in an amount.
  • Suitable plasticizers that can be used include, for example, phthalic acid derivatives such as di-n-octyl octyl phthalate, bis-12-ethylhexyl phthalate, dibenzyl phthalate, diisodecyl phthalate, didodecyl phthalate, dimethyl and phthalate, etc.
  • Isophthalic acid derivatives such as dioctyl isophthalate; adipic acid derivatives such as di-n-butyl adipate; di-octyl adipate; maleic acid derivatives such as di-n-butyl maleate; tri-n-butyl citrate Citrate derivatives such as citrate, etc., itaconic acid derivatives such as monobutyl itanate, oleic acid derivatives such as butyl acetate, other tricresyl phosphate, trixylyl phosphate, epoxidized soybean oil, Epoxy resin plasticizers and the like can be mentioned.
  • the plasticizer is added in an amount of about 30 to 70 parts by weight with respect to 100 parts by weight of polyvinyl chloride having a degree of polymerization of about 600 to 200. Can be blended.
  • lubricant or the heat stabilizer examples include polyethylene wax, bisamide, stearic acid, zinc stearate, barium stearate, calcium stearate, and barium ricinoleate.
  • UV absorbers examples include benzotriazole-based, benzoate-based, benzophenone-based, cyanoacrylate-based, and funalizalicylate-based UV absorbers. Agents.
  • pigments and dyes examples include titanium oxide, silica, ultramarine, phthalocyanine blue, and the like.
  • Examples of the moisturizing agent include hydrotalcite.
  • These resin additives can be contained in a usual content, for example, a small amount of 5 parts by weight or less per 100 parts by weight of the synthetic resin.
  • a known method such as a melt extrusion method, a solution casting method, or a calendar method may be employed.
  • the thickness of the agricultural synthetic resin coating material of the present invention is too thin, the strength is insufficient and it is not preferable. If it is too thick, it is formed into a film, and the subsequent handling (cutting the film and joining it into a house shape, spreading to a house)
  • the range is preferably from 0 to 0. 1 to 0.5 mm, because it causes inconvenience.
  • the synthetic resin coating material for agriculture of the present invention has improved anti-fogging property and anti-fogging property on the inside covered with the coating material, but also improves the dust resistance on the outside of the coating material. Is good.
  • the agricultural synthetic resin coating material of the present invention can be spread on agricultural and horticultural facilities such as a house and a tunnel and used for cultivation of useful plants, in the same manner as the agricultural coating material conventionally used.
  • Example 1 Synthesis of fluorinated compound D
  • F (CF 2 ) 8 (CH 2 ) 3 OH was added as it was as a powder, and 0.25 calories of a zinc hexacyanocobaltate complex were obtained.
  • the mixture was heated to 65 ° C and dissolved with stirring, heated to 80 ° C, and 546 g of propylene oxide (hereinafter referred to as PO) was continuously introduced over 3 hours while maintaining the temperature at 80 ° C.
  • PO propylene oxide
  • F (CF 2 ) 8 CH instead of F (CF 2 ) 8 (CH 2 ) 3 OH as initiator
  • the reaction was carried out in the same manner as in Example 2 except that 2 CH 2 CH (CH 3 ) 0 H was used, to obtain a fluorine-containing compound M.
  • the hydroxyl value of the fluorine-containing compound M was 59.2 mg KO HZg.
  • F (CF 2) a CH 2 CH 2 CH (CH 3 ) 0 [CH 2 CH (CH 3 ) 0] P (CH 2 CH 2 0) q H (however, The sequence of P 0 and E 0 is random.
  • the base composition was mixed with the types and amounts (unit: parts by weight) of the anti-fogging agent and the fluorine-containing compound shown in Tables 1 and 2.
  • the mixture was supplied to a calendar molding machine heated to 180 ° C, and formed into a film by an ordinary method, thereby producing 16 kinds of films having a thickness of 0.075 mm (excluding Example 24).
  • Table 3 shows the fluorine-containing compounds J, K and L and the antifogging agents SP and SS.
  • the experimental greenhouse was constructed by mounting a film on a 0.5 m high, 0-8 m wide, 0.4 m deep frame assembled on an outdoor temperature-controlled water tank.
  • the antifogging property and fog generation were evaluated by the following methods. The results are shown in Tables 1 and 2.
  • the test was started in September, and the inside of the film stretched in the experimental greenhouse was observed for 8 months.
  • the antifogging property was evaluated according to the following criteria.
  • ⁇ No water droplets adhered at all.: Slightly water droplets adhered. ⁇ : Water droplets adhered. X: Considerable water droplets observed. XX: Water droplets adhered over the entire surface. Is recognized.
  • the water temperature of the water tank was set to 45 ° C during the morning and evening when the air temperature decreased, and the occurrence of fog on the film inside the experimental greenhouse was observed for about 2 hours. Make this observation 9 We performed twice a month and four times a month from April until April. The fog generation was evaluated based on the following criteria.
  • Antifogging agent S S Sorbi Yun stearate Propylene oxide

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  • Chemical Kinetics & Catalysis (AREA)
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Abstract

L'invention concerne un matériau de revêtement en résine synthétique à usage agricole, est conçu de sorte qu'il n'y ait pas de formation de buée autour de sa surface intérieure et présentant d'excellentes propriétés antibuée durables. Ledit matériau de revêtement contient un composé fluoré (Rf-Q-O-(A-O)¿n?-R) et, soit un agent antibuée B (dérivé d'un polyol et d'acide gras C10-22), soit un agent antibuée C (dérivé d'un polyol, d'un acide gras C10-22, et d'un oxyde d'alcoylène).
PCT/JP1999/001104 1999-03-08 1999-03-08 Materiau de revetement en resine synthetique a usage agricole WO2000052997A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020007004630A KR20010040266A (ko) 1999-03-08 1999-03-08 농업용 합성수지 피복재
PCT/JP1999/001104 WO2000052997A1 (fr) 1999-03-08 1999-03-08 Materiau de revetement en resine synthetique a usage agricole
CNB998015938A CN1139639C (zh) 1999-03-08 1999-03-08 农用合成树脂覆材

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1999/001104 WO2000052997A1 (fr) 1999-03-08 1999-03-08 Materiau de revetement en resine synthetique a usage agricole

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KR101322577B1 (ko) * 2005-11-01 2013-10-25 아사히 가라스 가부시키가이샤 방담성 물품 및 방담제 조성물
KR100898612B1 (ko) * 2006-12-08 2009-05-21 손경락 자동적으로 습도가 조절되는 온실 하우스

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JPH10310706A (ja) * 1997-05-12 1998-11-24 Kurarianto Japan Kk 防曇、防霧性に優れた農業用合成樹脂フィルム

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