WO2004044090A1 - Materiau transformant la lumiere comprenant comme additif un silicate de baryum et de magnesium - Google Patents
Materiau transformant la lumiere comprenant comme additif un silicate de baryum et de magnesium Download PDFInfo
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- WO2004044090A1 WO2004044090A1 PCT/FR2003/003283 FR0303283W WO2004044090A1 WO 2004044090 A1 WO2004044090 A1 WO 2004044090A1 FR 0303283 W FR0303283 W FR 0303283W WO 2004044090 A1 WO2004044090 A1 WO 2004044090A1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
- C09K11/77342—Silicates
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- 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
- A01G9/20—Forcing-frames; Lights, i.e. glass panels covering the forcing-frames
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/12—Technologies relating to agriculture, livestock or agroalimentary industries using renewable energies, e.g. solar water pumping
Definitions
- the present invention relates to a light-transforming material, in particular for greenhouse walls, comprising as an additive a barium and magnesium silicate.
- light-transforming material is meant in the sense of the present description a material which is in particular capable of transforming UV radiation into red light. The need for such a material exists in several technical fields.
- polymers and mineral glasses are widely used for the manufacture of walls for greenhouses for agriculture. These polymers or mineral glasses must meet specific technical characteristics to allow optimal protection and development of crops.
- the object of the present invention is to provide a material which is capable of transforming UV radiation and in particular solar energy of the UV range, into a red light, in particular into a light which is more easily assimilated or usable for plants.
- the light-transforming material according to the invention is of the type comprising a matrix and an additive and it is characterized in that it comprises, as an additive, a compound of formula:
- FIG. 1 is a graph which represents the emission spectra of two additives according to the invention for an excitation wavelength of 370 nm;
- FIG. 2 is a graph which represents the excitation spectrum of an additive according to the invention for an emission wavelength of 623nm;
- FIG. 3 is a graph which represents the variation in intensity of absorption (1-R, R denoting the intensity of diffuse reflection) as a function of the wavelength for an additive of the invention, measured in synchronous mode using a spectrophotometer equipped with a front monochromator and a rear monochromator.
- the invention applies to any type of material based on a matrix and an additive and which, by virtue of its mechanical and / or optical properties, is used or capable of being used in an application in which it is sought to transform UV radiation into red light in particular or else to transform UV radiation, and in particular UV radiation from sunlight, into less energetic radiation.
- This matrix can be a fiber, natural or not, such as silk, wool, cotton, hemp or even viscose, nylon, polyamides, polyester and their copolymers.
- the matrix can also be a mineral (silicate) or organic glass.
- the matrix may also be based on a polymer, in particular of the thermoplastic type.
- thermoplastic polymers suitable for the invention mention may be made of: polycarbonates such as poly [methane bis (4-phenyl) carbonate], poly [1,1-ether bis (4-phenyl) carbonate], poly [diphenyl methane bis (4-phenyl) carbonate], poly [1,1-cyclohexane bis (4-phenyl) carbonate] and polymers of the same family; polyamides such as poly (4-amino butyric acid), poly (hexamethylene adipamide), poly (6-aminohexanoic acid), poly (m-xylylene adipamide), poly (p- xylylene sebacamide), poly ( 2,2,2-trimethylhexamethylene terephthalamide), poly (metaphenylene isophthalamide), poly (p-phenylene terephthalamide), and polymers of the
- comonomers used can be cyclic olefins such as 1,4-hexadiene, cyclopentadiene and ethylidenenorbornene.
- the copolymers can also be a carboxylic acid such as acrylic acid or methacrylic acid.
- polyethylenes are particularly preferred, including PEBD (low density polyethylenes), LLDPE (linear low density polyethylenes), polyethylenes obtained by metallocene synthesis, PVC (polyvinyl chloride), PET (polyethylene terephthalate) , polymethylmethacrylate, copolyolefins such as EVA (polyethylene of vinyl alcohol or ethylene vinyl acetate), mixtures and copolymers based on these (co) polymers, polycarbonate
- the polymer may be in a rigid form and a sheet or plate a few millimeters thick, for example in the case of polyvinyl chloride, methyl methacrylate or polycarbonate.
- the material of the invention can be deposited on, or associated with another substrate, such as the thermoplastics described above. This deposition or this association can be done by known methods of coextrusion, lamination, coating.
- Multilayer structures can be formed from one or more layers of material according to the invention, associated by layers of coextrusion binder with one or more other layers of one or more thermoplastic polymers (for example polyethylene, polychloride vinyl) which can constitute a support element, majority in the constitution of the film.
- the films thus obtained can be mono-stretched, bi-stretched according to known techniques for processing thermoplastics.
- the sheets or plates can be cut, thermoformed, stamped to give them the desired shape.
- the material of the invention can also be in the form of a matrix based on a paint or varnish or on a latex, this matrix being able to be deposited as a coating on an organic or mineral substrate such as a glass.
- paint or varnish is meant the formulations or compositions usually designated by this term in the technical field of paints and which are for example based on the following emulsion resins: alkyd resins, the most common of which is called glycerophthalic; long or short oil modified resins; acrylic resins derived from acrylic (methyl or ethyl) and methacrylic acid esters optionally copolymerized with ethyl acrylate, 2-ethylhexyl or butyl acrylate as well as acrylic-isocyanate resins; vinyl resins such as, for example, polyvinyl acetate, polyvinyl chloride, butyralpolyvinyl, formalpolyvinyl, and the copolymers of vinyl chloride and vinyl acetate or vinyliden
- latex is understood to mean the aqueous dispersions of polymer particles resulting from conventional emulsion (co) polymerization processes of polymerizable organic monomers.
- organic monomers can be chosen, for example, from alkyl (meth) acrylates, alpha, beta-ethylenically unsaturated esters; esters and hemi-esters of alpha, beta-polycarboxylic acids ethylenically unsaturated; vinyl halides; aromatic vinyls; conjugated aliphatic dienes; alpha, beta-ethylenically unsaturated nitriles; polyvinyl acetate latexes, isocyanates, polyols.
- the material as described above contains, as an additive, a barium and magnesium silicate, doped with europium, which can be considered as a partial substitution for barium, and with manganese, which can be considered as a partial substitution for magnesium, this silicate corresponding to formula (1) which has been given above.
- this additive When it is subjected to UV or near UV (UVA) excitation, that is to say radiation in a wavelength range between about 250 nm and about 390 nm, this additive has the property of emitting especially in red and also in blue, that is to say in a wavelength range between about 370 nm and about 400 nm (between 400 nm and 500 nm for blue and between 550 nm and 700 nm for red) with good yield.
- UV or near UV (UVA) excitation that is to say radiation in a wavelength range between about 250 nm and about 390 nm
- UVA near UV
- the compound corresponds to the above formula (1) in which 0.0001 ⁇ x ⁇ 0.25 and 0.0001 ⁇ y ⁇ 0.25.
- the compound corresponds to the above formula (1) in which 0.01 ⁇ x ⁇ 0.25 and 0.01 ⁇ y ⁇ 0.25. It may be noted that it is advantageous to have a concentration of europium in the compound of at least 0.01% in order to obtain a better intensity emission. It is also advantageous to have a concentration of europium and manganese of at most 25% in order to limit as much as possible annoying self-extinction phenomena.
- the percentages indicated above correspond to the substitution rates by mole of the doping ions Eu 2+ and Mn 2 respectively for the ions Ba 2+ and Mg 2+ .
- the compound of formula (1) checks the following values of x and y: 0.01 ⁇ x ⁇ 0.03 and 0.04 ⁇ y ⁇ 0.06. For these values of x and y the emission intensity is the most important.
- barium, magnesium and silicon may be partially substituted by elements other than those which have been described above.
- the barium can be partially substituted by calcium and / or strontium in a proportion which can go up to approximately 30%, this proportion being expressed by the atomic substituent / (susbtituant + barium) ratio.
- the magnesium can be partially substituted by zinc in a proportion which can go up to approximately 30%, this proportion being also expressed by the atomic ratio Zn / (Zn + Mg).
- silicon can be partially substituted by germanium, of aluminum and / or phosphorus in a proportion which can go up to approximately 10%, this proportion being expressed by the atomic ratio substituent / (susbtituant + silicon).
- the amount of silicate in the material can be in particular between 0.01% and 10% by mass relative to the total mass of the material, more particularly between 0.1% and 1%. These values are given by way of example only and they may vary depending on the nature of the matrix.
- the low value is fixed according to the intensity of the desired effect which one wishes to obtain.
- the high value is not critical, generally one does not exceed the value beyond which an additional quantity does not bring an advantage or additional effect compared to other constraints for example cost constraints.
- the additive of the invention has a UV absorption capacity which also enables it to provide an anti-UV function and therefore to protect against the UV the materials in which it is incorporated.
- the silicate used for the invention is generally prepared by a reaction in the solid state at high temperature.
- the oxides of the required metals or organic or inorganic compounds capable of forming these oxides by heating such as the carbonates, oxalates, hydroxides, acetates, nitrates, borates of said metals.
- the mixture of starting materials is then heated at least once for a period of between one hour and one hundred hours approximately, to a temperature between approximately 500 ° C and approximately 1600 ° C; it is preferable to carry out the heating at least in part under a reducing atmosphere (hydrogen in argon for example) to bring the europium completely to the divalent state.
- a reducing atmosphere hydrogen in argon for example
- silicates there is no limitation to the shape, the morphology, the average particle size or the particle size distribution of the silicates thus obtained.
- These products can be ground, micronized, sieved and surface treated, in particular with organic additives, to facilitate compatibility or dispersion in the application medium.
- the material of the invention in addition to the matrix based on the elements described above such as fiber, polymer, paint or varnish or latex, and the compound based on barium silicate and magnesium mentioned above, can also comprise, in a known manner, other additives, such as for example stabilizers, plasticizers, flame retardants, dyes, optical brighteners, lubricants, anti-sticking agents, matting agents, processing, elastomers or compositions of elastomers (for example acrylic copolymers or copolymers of methacrylate butadiene styrene) making it possible to improve the flexibility or the mechanical resistance of films or sheets, adhesion agents (for example polyolefins grafted with maleic anhydride allowing adhesion to polyamide), dispersing agents allowing a better distribution of the silicate in the material or t any other additive necessary for the production of multilayer thermoplastic film structures, in particular those known and often used for the production of greenhouse films (for example anti-drip, anti-fogging)
- a first method consists in mixing the silicate and the other aforementioned additives in a thermoplastic compound in molten form and optionally subjecting the mixture to significant shearing, for example in a twin-screw extrusion device, in order to achieve good dispersion.
- Another method consists in mixing the additive (s) to be dispersed with the monomers in the polymerization medium, then in carrying out the polymerization.
- Another method consists in mixing with a thermoplastic polymer in molten form, a concentrated mixture of a thermoplastic polymer and dispersed additives, prepared for example according to one of the methods described above.
- the silicate can be introduced into the synthesis medium of the macromolecular compound, or into a molten thermoplastic polymer in any form. It can for example be introduced in the form of a solid powder or in the form of a dispersion in water or in an organic dispersant.
- a process suitable for paints or varnishes or latexes consists in directly dispersing the silicate compound in the form of powder in the latex or in the paint or varnish, for example by stirring, or else in preparing a powder concentrate in a liquid or pasty medium which is then added to paints or varnishes or latex.
- the concentrate can be prepared in an aqueous or solvent medium, optionally with surfactants, water-soluble or hydrophobic polymers or alternatively comprising hydrophilic and hydrophobic ends, polar or not, necessary for the stabilization of the mixture to avoid decantation.
- surfactants water-soluble or hydrophobic polymers or alternatively comprising hydrophilic and hydrophobic ends, polar or not, necessary for the stabilization of the mixture to avoid decantation.
- additives which may enter into the composition of the concentrate.
- the material of the invention can be very particularly used in the manufacture or in the construction of greenhouse walls.
- the term "greenhouse” should be understood here broadly as covering any type of shelter used in agriculture for the protection and development of crops.
- it can be greenhouses and large plastic tunnels, glass greenhouses, large shelters, semi-forcings, flat tarpaulins, mulches etc. as described in the brochure published by CIPA (International Congress of Plastic in Agriculture) 65 rue de Prony, Paris, "The evolution of plasticulture in the World” by Jean-Pierre Jouet.
- the invention therefore relates to walls for greenhouses which comprise a material as described above.
- the material of the invention can also be used in the field of cosmetics, in particular in the preparation of nail varnishes and styling gels.
- Nail polishes generally contain:
- plasticizer for example, diethyl phthalate, dibutyl phthalate, dioctyl phthalate, tricresylphosphate, n-butyl stearate, resorcin diacetate or a mixture thereof,
- a solvent such as ethyl, isopropyl, butyl, isobutyl alcohol, ethyl acetate, butyl acetate or most often the mixture of these solvents, - a diluent, in particular toluene or xylene,
- perfume or pearlescent product mica flakes coated with bismuth oxychloride or titanium dioxide.
- plasticizer (s) from 3 to 5% by weight of plasticizer (s),
- the varnish constitutes the matrix and the compound of formula (1) is present as an additive in this matrix.
- the compound is generally ground in a plastic mass consisting of nitrocellulose and plasticizer (s) which is then dissolved in the solvent (s).
- the amount of compound used is usually 1% to 5% by mass relative to the varnish. It should be noted that these values are given as an indication and that they are not critical. They can be modified as a function of the intensity of the desired effect, ie the luminescence in the red, and cost constraints.
- the invention therefore also relates to nail varnishes which comprise a compound of formula (1) as described above.
- Styling gels generally contain:
- a gelling agent which can be, for example, hydroxyethyl cellulose, an ethylene-maleic anhydride copolymer or a carbomer (homopolymer of acrylic acid crosslinked with an allyl ether of pentaerythritol, an allyl ether of sucrose or an allyl ether of propylene);
- a fixing polymer which can in particular be polyvinyl pyrrolidone (PVP), a polyvinyl pyrrolidone / vinyl acetate mixture, terpolymers;
- a conditioning agent such as polyquaternium-11, polyquatemium-4 or polyquatemium-7, a PVP / dimethylaminoethylmethacrylate copolymer mixture, a guar;
- a plasticizing agent such as dimethicone copolyol.
- the gel constitutes the matrix and the compound of formula (1) is present as an additive in this matrix.
- the amount of compound used is usually 0.5% to 4% by mass relative to the gel.
- the material of the invention can also be used in the manufacture of fabrics for clothing, in the construction of buildings or shelters, in automobile industry. Thus, it can be used in the manufacture of luminescent films for non-agricultural applications, for luminescent paints or glasses with luminescent coatings for buildings or automobiles.
- the material of the invention can also be used in light-emitting diodes (LEDs). Finally, it can be used in the manufacture of materials usable in bio-technologies. Examples will now be given.
- EXAMPLE 1 This example relates to the preparation of a compound corresponding to the composition Ba 3 MgSi 2 O 8 : 2% Eu 2+ , 5% Mn 2+ and corresponding to the formula Ba2, 94 Euo, o6Mgo, 95 Mno, o 5 If 2 ⁇ 8 (the percentages indicated for the doping ions correspond to the rates of substitution by mole of the Eu 2+ and Mn 2+ ions respectively to the Ba 2+ and Mg 2+ ions).
- Per channel is carried by mixing the solid BaC0 3 oxide, Eu 2 O 3, (MgCO 3) 4 Mg (OH) 2 .5H 2 O, MnCO 3 and SiO 2 in stoichiometric proportions. 0.4 mole of NH 4 CI is added to the mixture as a stream.
- This example concerns the preparation of a compound corresponding to the composition Ba 3 MgSi 2 O 8 : 2% Eu 2+ , 20% Mn 2+ and corresponding to the formula Ba2.94Euo, o6Mgo, 8Mno, 2 Si 2 ⁇ 8 .
- the procedure is as in Example 1, by solid route, by mixing the oxides BaC0 3 , Eu 2 0 3 , (MgCO 3 ) 4 Mg (OH) 2 .5H 2 ⁇ , MnCO 3 and Si ⁇ 2 in stoichiometric proportions. 0.4 mole of NH 4 CI is added to the mixture as a stream.
- the curves of FIG. 1 give, for the compounds thus obtained, the emission spectrum for an excitation wavelength of 370 nm. We therefore see that in response to an excitation in the UV range, the compounds emit in red (peak around 625nm) and also in blue (peak towards
- FIG. 3 is a graph, produced in synchronous mode, which represents the variation in intensity of absorption as a function of the wavelength of the compound of Example 1. This graph clearly shows the absorption capacity of the UV of the compound since the reflection intensity is practically zero for a wavelength less than about 425nm.
- Example 2 illustrates the use in an polymer film of an additive according to the invention.
- the product obtained in Example 1 is steamed for 12 hours at 90 ° C. It is then mixed in a cube mixer for 10 minutes with LDPE Lacqtène 1020FN24, PEG 400 (sticky agent) and an antioxidant Irganox B225.
- the formulations used are as follows:
- the implementation is carried out on a ZSK30 twin screw extruder on which is adapted a flat die of 30cm width and adjustable opening as well as a cast film machine allowing to stretch the film at the extruder outlet in order to l '' bring to the thickness of 100 ⁇ m.
- the temperature in the extruder and in the film die is 180 ° C.
- the temperature at the inlet of the film cast machine is 70 ° C.
- the other conditions are as follows:
- the film obtained emits a purple color when subjected to lighting with a wavelength of 370nm.
- Films are prepared in the same manner as in Example 3 with the product of Example 1 which, however, has not undergone oven treatment.
- HALS is a known anti-UV additive (50% Tinuvin622-50% Chimasorb 944).
- the films produced have a thickness of between 110 ⁇ m and 130 ⁇ m.
- the films obtained are placed on a contrast card and the chromaticity coordinates L, a and b are measured on a white background with a Minolta 508d spectrocolorimeter, the specular component being included. These coordinates are given in the CIE 1976 system (L, a and b) as defined by the International Lighting Commission and listed in the Collection of French Standards (AFNOR), colorimetric n ° X08-12, n ° X08- 14 (1983). A Haze measurement is also carried out with an XL-211 Hazegard haze meter from Byk-Garner.
- the film of test 1 is colorless.
- the white ⁇ E varies in proportions which are below the measurement uncertainties, which shows that the addition of the compound of the invention does not cause the color of the film to change, there is no yellowing by example.
- the Haze measurement makes it possible to assess the transparency of the film. There is also no significant variation in transparency.
- control test 1 in the wavelength range from 250 nm to 750 nm, no significant modification of the transmission spectrum between the film is observed. of control test 1 and the film of test 2 or between that of test 3 and that of control test 4.
- EXAMPLE 5 This example relates to the use of the product of Example 1 in the preparation of a nail varnish.
- This varnish is a transparent base marketed by the company GEMEY (3.55 g) and containing:
- This example relates to the use of the product of Example 1 in the preparation of a styling gel.
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AP2005003327A AP1904A (en) | 2002-11-05 | 2003-11-04 | Light transforming material comprising as additivea barium and magnesium silicate |
US10/533,695 US7536834B2 (en) | 2002-11-05 | 2003-11-04 | Light-converting material comprising a barium magnesium silicate as additive |
EP03767895A EP1570023A1 (fr) | 2002-11-05 | 2003-11-04 | Materiau transformant la lumiere comprenant comme additif un silicate de baryum et de magnesium |
AU2003292329A AU2003292329A1 (en) | 2002-11-05 | 2003-11-04 | Light transforming material comprising as additive a barium and magnesium silicate |
MXPA05004781A MXPA05004781A (es) | 2002-11-05 | 2003-11-04 | Material que transforma la luz, que comprende como aditivo un silicato de bario y de magnesio. |
BR0315798-9A BR0315798A (pt) | 2002-11-05 | 2003-11-04 | Material para transformação de luz e parede de estufa |
JP2004550733A JP4358748B2 (ja) | 2002-11-05 | 2003-11-04 | バリウムマグネシウムシリケートを添加剤として含む光変換材料 |
TNP2005000124A TNSN05124A1 (fr) | 2002-11-05 | 2005-05-04 | Materiau transformant la lumiere comprenant comme additif un silicate de baryum et de magnesium |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0213832A FR2846663B1 (fr) | 2002-11-05 | 2002-11-05 | Materiau transformant la lumiere, notamment pour parois de serres, comprenant comme additif un silicate de baryum et de magnesium |
FR02/13832 | 2002-11-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004044090A1 true WO2004044090A1 (fr) | 2004-05-27 |
Family
ID=32104465
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2003/003283 WO2004044090A1 (fr) | 2002-11-05 | 2003-11-04 | Materiau transformant la lumiere comprenant comme additif un silicate de baryum et de magnesium |
Country Status (16)
Country | Link |
---|---|
US (1) | US7536834B2 (fr) |
EP (1) | EP1570023A1 (fr) |
JP (1) | JP4358748B2 (fr) |
KR (1) | KR100713763B1 (fr) |
CN (1) | CN1312251C (fr) |
AP (1) | AP1904A (fr) |
AU (1) | AU2003292329A1 (fr) |
BR (1) | BR0315798A (fr) |
CO (1) | CO5650172A2 (fr) |
EC (1) | ECSP055779A (fr) |
FR (1) | FR2846663B1 (fr) |
MA (1) | MA27486A1 (fr) |
MX (1) | MXPA05004781A (fr) |
TN (1) | TNSN05124A1 (fr) |
WO (1) | WO2004044090A1 (fr) |
ZA (1) | ZA200503582B (fr) |
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- 2003-11-04 KR KR1020057007882A patent/KR100713763B1/ko not_active IP Right Cessation
- 2003-11-04 WO PCT/FR2003/003283 patent/WO2004044090A1/fr active Application Filing
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Cited By (9)
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JPWO2004056940A1 (ja) * | 2002-12-20 | 2006-04-20 | 豊田合成株式会社 | 発光体およびこれを用いた光デバイス |
US8092713B2 (en) * | 2004-07-16 | 2012-01-10 | Rhodia Chimie | Method for marking a material and resulting marked material |
JP2006342163A (ja) * | 2005-06-08 | 2006-12-21 | Clariant Produkte (Deutschland) Gmbh | エチレンおよび/またはプロピレンモノマーのホモポリマーおよび/またはコポリマーワックスを含有する化粧料、薬剤および皮膚剤組成物 |
WO2007015542A1 (fr) * | 2005-08-04 | 2007-02-08 | Nichia Corporation | Luminophore et dispositif émetteur de lumière |
US7927512B2 (en) | 2005-08-04 | 2011-04-19 | Nichia Corporation | Phosphor and light emitting device |
KR101047775B1 (ko) | 2008-09-23 | 2011-07-07 | 주식회사 포스포 | 형광체 및 발광소자 |
US11938011B2 (en) | 2010-08-06 | 2024-03-26 | Immunolight, Llc | Color enhancement utilizing up converters and/or down converters |
WO2021111001A1 (fr) | 2019-12-06 | 2021-06-10 | Solvay Sa | Aluminates et émetteurs rouges dans un film pour serre pour la croissance de plantes |
WO2022268975A1 (fr) | 2021-06-23 | 2022-12-29 | Rhodia Operations | Procédé de traitement d'une plante |
Also Published As
Publication number | Publication date |
---|---|
KR20050084929A (ko) | 2005-08-29 |
AP1904A (en) | 2008-10-15 |
CO5650172A2 (es) | 2006-06-30 |
ZA200503582B (en) | 2006-08-30 |
ECSP055779A (es) | 2005-08-11 |
BR0315798A (pt) | 2005-09-13 |
TNSN05124A1 (fr) | 2007-05-14 |
AP2005003327A0 (en) | 2005-06-30 |
MA27486A1 (fr) | 2005-08-01 |
EP1570023A1 (fr) | 2005-09-07 |
FR2846663B1 (fr) | 2006-08-11 |
FR2846663A1 (fr) | 2004-05-07 |
KR100713763B1 (ko) | 2007-05-07 |
AU2003292329A1 (en) | 2004-06-03 |
JP2006505659A (ja) | 2006-02-16 |
CN1312251C (zh) | 2007-04-25 |
CN1714134A (zh) | 2005-12-28 |
MXPA05004781A (es) | 2005-11-04 |
US20060168905A1 (en) | 2006-08-03 |
US7536834B2 (en) | 2009-05-26 |
JP4358748B2 (ja) | 2009-11-04 |
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