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WO2011156663A1 - Procédé de traitement d'un matériau à l'aide d'une composition dérivée d'un sol-gel - Google Patents

Procédé de traitement d'un matériau à l'aide d'une composition dérivée d'un sol-gel Download PDF

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Publication number
WO2011156663A1
WO2011156663A1 PCT/US2011/039884 US2011039884W WO2011156663A1 WO 2011156663 A1 WO2011156663 A1 WO 2011156663A1 US 2011039884 W US2011039884 W US 2011039884W WO 2011156663 A1 WO2011156663 A1 WO 2011156663A1
Authority
WO
WIPO (PCT)
Prior art keywords
sol
sorbate
gel derived
derived composition
composition
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.)
Ceased
Application number
PCT/US2011/039884
Other languages
English (en)
Inventor
Paul L. Edmiston
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.)
ABS Materials Inc
Original Assignee
ABS Materials Inc
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 ABS Materials Inc filed Critical ABS Materials Inc
Publication of WO2011156663A1 publication Critical patent/WO2011156663A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
    • C01B33/145—Preparation of hydroorganosols, organosols or dispersions in an organic medium
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
    • A01N25/04—Dispersions, emulsions, suspoemulsions, suspension concentrates or gels
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/12—Powders or granules

Definitions

  • the present invention relates generally to the chemical arts. More particularly, the invention relates to a method for the treating a material using a sol-gel controlled release of a sorbate, such as a pesticide, a herbicide or a pharmaceutical substance .
  • a sorbate such as a pesticide, a herbicide or a pharmaceutical substance .
  • a method and system that includes treating a material by applying a sol-gel derived composition loaded with a first sorbate under conditions effective to treat the material with the first sorbate.
  • the sol-gel derived composition is substantially completely loaded with the sorbate and, in some aspects, the sol-gel derived composition is partially loaded with the sorbate.
  • the sol-gci. derived com osition is an aromatically- bridged, organosiloxane sol-gel derived composition containing a plurality of alkylsiloxy substituents.
  • the sol-gel derived composition is an aromaticaliy- bridged, organosiloxaiie sol-ge] derived composition containing a plurality of alkylsiloxy snbstituents and a cosmetically acceptable carrier.
  • the first sorbate is biologically active. And is some such embodiments, the first sorbate is a pesticide, a herbicide or a pharmaceutical. In some such embodiments, the first sorbate is atrazuie, 2,4-dichiorophcnoxyacetic acid, malathion, dicWorodiphenyltrichloroetbane, impramiiie, a vitamin or a polypeptide,
  • the loading density of the sorbate in the sol-gel derived composition ia from about 0.005 to about 5 gram sorbate per gram of the sol-gci derived composition. And in some aspects, the loading density of the sorbate in the sol-gel derived composition is from about 0.005 to about 5 gram sorbate per gram of the sol-gel derived composition.
  • the method additionally includes applying a second sorbate after application of the first sorbate.
  • the second sorbate is a water soluble organic liquid and, in some of these embodiments, the second sorbate is etiianol.
  • the soi-gel derived composition is applied to a plant or an animal. And, in some embodiments, the sol-gel derived composition is applied to a human.
  • the sol-gel derived composition is applied to a soil. And, in some, embodiments, an unloaded sol-gci derived composition is applied along with die loaded sol-gel derived composition. In some of these embodiments, the sol-gel derived composition includes inert particles having a diameter of from about 5 to about 20 DID. In some of these embodiments, the inert particle is magnetic and in some embodiments, the sol gel-derived composition containing magnetic panicles is removed from the treated material using a magnetic device.
  • sol-gel derived composition is formulated with a non-liquid pharmaceutically effective carrier or a cosmetically acceptable carrier.
  • sorbate means an organic compound that is taken up by the sol-gel derived compositions whether by adsorption, absorption, or a combination thereof.
  • swellable means an increase of at least 1.5 times the volume of the sol-gel derived composition , when placed in excess sorbate compared to the vohime when dry.
  • nanoparticle means a particle sized between about 2 and about 500 nanometers in one dimension.
  • the sol -gel derived composition is swellable to at least 1 ,5 limes its volume, when dry, in acetone.
  • Preferred sol-gei derived compositions are swellable to at least two times their ori inal volume, more preferably at least five times their original volume, and in some embodiments tip to about eight to ten ti mes their original volume.
  • the swelling of the sol-gel derived composition and the sorption of the first sorbatc are driven by the release of stored tensile force rather than, by chemical reaction.
  • the sol-gel derived composition is a porous, aiOmati cully- bridged, oi'ganosi loxane soi-gel derived composition containing a lurarity of alky) siJoxy substituents.
  • the sol-gel derived composition contains a plurality of flexibly tethered and interconnected organosiloxane particles having diameters on the nanometer scale.
  • the organosiloxane nanoparticles form a disorganized porous matrix defined by a plurality of cross-linked aromatic si!oxarres.
  • the porous, aromatically bridged, organosiloxane sol-gel derived compositions contains a plurality of polysiloxanes that include an aromatic bridging group flexibly linking the silicon atoms of the polysiloxanes.
  • Such organosiloxane nanoparticles have a multilayer configuration comprising a hydrophilic inner layer and a. hydrophobic, aromatic-rich outer layer.
  • sol-gel derived compositions useful in accordance with the inventive method is disclosed in U .S. Pat. No. 7,790, 830 which patent is herein incorporated by reference.
  • a suitable swellable sol-gel derived composition is Osorb® swellable sol-gel derived, composition available from ABS Materials, Wooster, Ohio.
  • the porous, swellable sol-gel derived compositions is loaded with a first sorbate. It is an advantage of the invention that a wide variety of sorbates can be used.
  • the sorbate is biologically active.
  • Representative biologically active sorbates include, but are not limited to, pesticides, herbicides, such as atrazine, 2.4- dichlorophenoxyacetic acid, malathion, and dichlorodiplienyltrichloroelhane and pharmaceuticals, including drags such as impra ine, vitamins and pol peptides.
  • the sol-gel . derived compositions are loaded with a first sorbate using any suitable method.
  • the sol-gel derived composition can be contacted with the first sorbate under conditions sufficient to cause the sol-gel derived composition to sorb the sorbate.
  • a nonvolatile first sorbate such as impramiiie.can be mixed with a volatile second sorbate, such as etbanol or a mixture of ethanol and dichloromethane, where the second sorbate is chosen because of its effectiveness in swelling the sol-gel derived composition .
  • the sol-gel derived composition is contacted with the mixture, the mixture is healed, for example up to about 180° F (the decomposition temperature of the sol-gel derived composition ⁇ to remove the volatile second sorbate and produce a sol-gel derived composition loaded with (he first sorbate.
  • the sol-gel derived composition is contacted with an aqueous solution containing a water soluble first sorbate, such as atrazine.
  • the sol-gel derived composition is first swo llen with a sorbate and the sorbate is excha ged for a first water soluble sorbate by rinsing the swollen sol-gel derived composition with an aqueous solution containing the water-solubl sorbate.
  • the loading density of the first sorbate in the sol-gel derived composition depends on the required concentration, application time and physical characteristics of the sorbate. The particular loading density for a speci fic application can be readily determined by one skilled in the art without undue experimentation.
  • the loading density of the sorbate in tire sol-gel derived composition is from about 0.005 to about 5 gram sorbate per gram of the sol-gel derived composition.
  • the loading density of the sorbate in the sol-gel derived composition is from about 0.01 to about 1 gram sorbate per gram of the sol-gel derived composition.
  • the sol-gel derived composition is completely loaded with the first sorbate, I.e., the sol-gel derived composition has been treated under conditions such that substantially no additional sorbate can be sorbed by the sol-gel derived composition .
  • the sol-gel derived composition is only partially loaded with the first sorbate.
  • the sol-gel derived composition can be used in any suitable form, including in powder or pellet forms.
  • Useful polymeric binders include microcrystalline cellulose and elast meric polymers.
  • Preferred elastomeric polymers have a glass transition temperature below about 1 50 C, the temperature at which the sensor material begins to decompose.
  • polystyrene and is a currently most preferred elastomeric polymer binder are described in U.S. Patent Nos.
  • Pellets can be formed in any desired shape and size suitable for their desired application.
  • the sol-gel derived, composition are appl ied, by any suitable method.
  • the affinity of the sol-gel derived composition for the sorbate then provides for the slow desorption of the sorbate from the sol-gel derived composition at a . measured rate.
  • Other factors diat can be used to influence the rate of release include the concentration griidient and die size of the sorbate.
  • the material is treated with a second sorbate.
  • Suitable second sorbates include, without limitation, water soluble organic liquids, such as ethanol. Sufficient second sorbate is applied to cause the sol-gel derived composition to swell and thus increase the rate of desorption of the first sorbate.
  • both loaded and unloaded sol-gel derived composition arc- applied to the material.
  • the unloaded sol-gel derived composition can be applied to an area different than the area where the loaded, sol-gel derived composition is applied, e.g. an area where no treatment is desired.
  • tire sorbate is released from the loaded sol-gel derived composition , it is sorbed by the unloaded sohscl derived composition , thus providing control not only over the rate but the area of application of the sorbate.
  • the sol-gel derived composition can additionally include inert particles having a diameter of from about 5 to about 20 ran. The particles can be chosen to increase the density of the sol-gel derived composition , thus, inhibiting the travel of the sol-gel derived composition in high winds or heavy rain.
  • the inert particles are made of a magnetic material, such as metallic iron or magnetite, it is an advantage of sol-gel derived composition containing such magnetic particles that they can be readily removed from a material, once treatment is completed, using a magnetic device.
  • Representative formulations containing the sorbate loaded sol-gel derived composition include, but are not limited, cosmetics, cleansers (e.g., skin cleansers), and medicaments, including pharmaceuticals in the form of tablets, capsules, ointments, or the like.
  • Cosmetic formulations according to the invention can be contained in a wide variety of cosmetic preparations.
  • Representative formulations include, but are not limited to, skin-care preparations, e.g. skin emulsions, multi-emulsions or skin oils and body powders; cosmetic personal care preparations, e.g. facial make-up in the form of lipsticks, lip gloss, eye shadow, liquid make-up, day creams or powders, facial lotions, creams and powders (loose or pressed); and light-protective preparations, such as sun tan lotions, creams and oils, sun blocks and pretann g preparations.
  • skin-care preparations e.g. skin emulsions, multi-emulsions or skin oils and body powders
  • cosmetic personal care preparations e.g. facial make-up in the form of lipsticks, lip gloss, eye shadow, liquid make-up, day creams or powders, facial lotions, creams and powders (loose or pressed)
  • light-protective preparations such as sun
  • compositions according to the invention comprise a l iquid or non liquid cosmetically acceptable carrier to act as a diluent, dispersant or vehicle for the sorbate- Ioaded sol-gei derived composition . so as to facilitate- its distribution when the composition is applied to the skin.
  • Carriers other than or in addition to water can include liquid or solid emollients, solvents, humectants, thi ckeners and powders.
  • Particularly suitable non aqueous carriers include polydimethyi, si!oxane and/or po!ydimethyl phenyl siloxaiie.
  • Such formulations can additional ly include colorants, sequestering agents, thickening or solidifying (consistency regulating) agents, emollients.
  • UV absorbers, skin- protective agents, antioxidants find preservatives..
  • the sol-gel derived composition is formulated in at least one liquid or non liquid pharmaceutically acceptable carrier.
  • the sol-gel derived composition is formulated in at least one liquid or non liquid pharmaceutically acceptable carrier.
  • pharmaceutically acceptable carrier encompasses any of the standard pharmaceutical carriers known to those of skill in. the art.
  • Pharmaceutically acceptable carriers include. solveni(s), vehicle(s), adjuvants), excipient(s), bt.nder(s), thickener(s), suspending. agent(s), or filler substance(s) thai are known to the skilled artisan suitable for administration to human and/or animals.
  • Other useful carriers include gum acacia, agar, petrolatum, lanolin, dimethyl sulfoxide (DM.SO), normal saline ( S).
  • PBS phosphate buffered saline
  • uctoxvnol oleyl alcohol polyvinyl alcohol, povidone, propylene glycol raonostearate, sodium laiiryl sulfate, sorbitan esters, stearyl alcohol, tragacanth, xanthan gum, chondrus, glycerin, trolami te, avocado oil, almond oil, coconut oil. coconut butter, propylene glycol, ethyl alcohol, malt, and malt extract.
  • Medicares include medicaments taken into the bodies of humans or non-human vertebrate animals, or applied topically thereto, by a delivery- system.
  • a medica ent is a therapeuti c agent or substance, such as a drug, medicine, irrigaol, bandage, or other medical or dental device, that promotes recovery from injury or ailment or prevents or alleviates the symptoms of disease.
  • Medicaments containing the sorbats-ioadel sol-gel derived composition can be formulated for any suitable systemic or non-systemic delivery system, including delivery systems for oral, enteral, or parenteral delivery routes include tablets, troches, lo enges, aqueous or oily suspensions, dispersible powders or granules, emulsions, hard or soft capsules. syrups, beverages, el ixirs or enteral formulas, lavage or enema solutions, adhesive patches, infusions, injectates, intravenous drips, inhalants, or implants. Delivery systems also include topical creams, ge!s, suppositories, or ointments for non-systemic localized deiivery or systemic delivery vi a the blood stream.
  • Systemic- delivery systems that are contemplated by the present invention include, but are not limited to, implant; adhesive transdermal patches; topical creams, gels or oi tments for transdermal delivery; trausmucosal delivery matiiccs or suppositories or gels. It is contemplated that the compositions of the present invention are formulated to deliver an effective amount of the sorbaie by these or any other pharmaceutically acceptable systemic delivery system.

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Environmental Sciences (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Plant Pathology (AREA)
  • Agronomy & Crop Science (AREA)
  • Dispersion Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Medicinal Preparation (AREA)
  • Cosmetics (AREA)

Abstract

La présente invention concerne un procédé et un système impliquant le traitement d'un matériau par application d'une composition dérivée d'un sol-gel chargée d'un premier sorbate dans des conditions permettant le traitement efficace du matériau par le premier sorbate.
PCT/US2011/039884 2010-06-10 2011-06-09 Procédé de traitement d'un matériau à l'aide d'une composition dérivée d'un sol-gel Ceased WO2011156663A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US35341710P 2010-06-10 2010-06-10
US61/353,417 2010-06-10
US35609410P 2010-06-18 2010-06-18
US61/356,094 2010-06-18

Publications (1)

Publication Number Publication Date
WO2011156663A1 true WO2011156663A1 (fr) 2011-12-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2579793C1 (ru) * 2014-11-06 2016-04-10 Государственное бюджетное учреждение Республики Башкортостан "Научно-исследовательский технологический институт гербицидов и регуляторов роста растений с опытно-экспериментальным производством Академии наук Республики Башкортостан" Гербицидная композиция в форме микроэмульсионного концентрата

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2579793C1 (ru) * 2014-11-06 2016-04-10 Государственное бюджетное учреждение Республики Башкортостан "Научно-исследовательский технологический институт гербицидов и регуляторов роста растений с опытно-экспериментальным производством Академии наук Республики Башкортостан" Гербицидная композиция в форме микроэмульсионного концентрата

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