WO2018106540A1 - Agent clarifiant encapsulé soluble dans l'eau - Google Patents

Agent clarifiant encapsulé soluble dans l'eau Download PDF

Info

Publication number
WO2018106540A1
WO2018106540A1 PCT/US2017/064270 US2017064270W WO2018106540A1 WO 2018106540 A1 WO2018106540 A1 WO 2018106540A1 US 2017064270 W US2017064270 W US 2017064270W WO 2018106540 A1 WO2018106540 A1 WO 2018106540A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
composition
coagulant
film
flocculant
Prior art date
Application number
PCT/US2017/064270
Other languages
English (en)
Inventor
Scott SCHANEVILLE
Original Assignee
Nc Brands, L. P.
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 Nc Brands, L. P. filed Critical Nc Brands, L. P.
Publication of WO2018106540A1 publication Critical patent/WO2018106540A1/fr

Links

Classifications

    • 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
    • A01N25/26—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 in coated particulate form
    • A01N25/28—Microcapsules or nanocapsules
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56—Macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
    • C02F1/685—Devices for dosing the additives
    • C02F1/688—Devices in which the water progressively dissolves a solid compound
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/42—Nature of the water, waste water, sewage or sludge to be treated from bathing facilities, e.g. swimming pools
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/14—Additives which dissolves or releases substances when predefined environmental conditions are reached, e.g. pH or temperature

Definitions

  • the present invention relates to water soluble films and encapsulants.
  • coagulants and flocculants such as polyacrylamides are used to treat contaminated bodies of water in order to bind to contaminants and make it easier for removal via filtrations or other methods, thus allowing for the water to return to a clean and clear state.
  • Polyacrylamides are also safe for treatment of bodies of water such as a pool, jacuzzi, spa, lakes, and other bodies of water where humans might swim and come in contact with the treated water.
  • the present invention broadly encompasses materials and methods for encapsulating clarifying agents.
  • the present invention further contemplates materials and methods for encapsulating coagulants and flocculants in water soluble films.
  • One embodiment of the present invention contemplates a composition comprising a water- soluble polymeric encapsulant; and a coagulant or flocculant encapsulated in the water soluble polymer encapsulant.
  • the coagulant, or flocculant comprises a polyacrylamide.
  • the coagulant or flocculant may comprise sodium
  • Embodiments of the present invention may be formulated in a unit or pod dosage form.
  • the water-soluble polymeric encapsulant may be water-soluble film.
  • the water-soluble polymeric encapsulant may be a flexible water- soluble film.
  • the water-soluble polymeric encapsulant is a self-supporting water-soluble film.
  • the present invention provides embodiments where the coagulant or flocculant may be stable or inert with respect to the water-soluble polymeric encapsulant.
  • the present invention also provides embodiments where the water-soluble polymeric encapsulant renders the encapsulated coagulant or flocculant stable or inert.
  • Embodiments of the present invention may also further comprise one or more of: an active compound, a disinfectant, an antimicrobial, a sporocide, a stabilizing agent, and a colorant.
  • Water-soluble polymeric encapsulants in accordance with the present invention may also be configured to provide timed release of the encapsulated coagulant or flocculant over a period of about 1 minute to about 4 weeks.
  • Water-soluble polymeric encapsulants in accordance with the present invention may also be configured to provide time-delayed release of the encapsulated coagulant or flocculant with a release time beginning from about 1 minute to about 4 weeks.
  • the present invention also encompasses embodiments where the water-soluble polymeric encapsulant may be formed into a plurality of films, at least a first film in the plurality of films encapsulating the coagulant or flocculant. and a second film in the plurality of films encapsulating nothing, or one or more of the coagulant or flocculant, an active compound, a disinfectant, an antimicrobial, a sporocide, a stabilizing agent, and a colorant.
  • Embodiments of the present invention may also comprise a plurality of films configured for sequential dissolution.
  • the water-soluble polymeric encapsulant may be formed into a plurality of films, at least a first film in the plurality of films encapsulating the coagulant or flocculant, and a second film in the plurality of films encapsulating one or more of the coagulant or flocculant, an active compound, a disinfectant, an antimicrobial, a sporocide, a stabilizing agent, and a colorant, , the plurality of films being configured for sequential dissolution effective to sequentially release an encapsulant in each of the plurality of films.
  • the water-soluble polymeric encapsulant comprises one or more polymers, plasticizers, emulsifiers, bonding agents, bulking agents, fillers, and stabilizing agents.
  • Some embodiments of the present invention may have a density greater than 1 gram per cc.
  • Some embodiments of the present invention may have a density less than 1 gram per cc.
  • Embodiments of the present invention may be formed in a unit dose configuration effective to enclose one or more hollow pocket that give the composition an effective density less than 1 gram per cc.
  • Embodiments of the present invention further comprise methods having the steps of providing a composition, comprisingia water-soluble polymeric encapsulant; and a coagulant or flocculant encapsulated in the water soluble polymer encapsulant; and clarifying a portion of water by contacting the composition to the portion of water effective to cause at least partial dissolution of the water -soluble polymeric encapsulant effective to release the encapsulated coagulant or flocculant to the portion of water.
  • coagulants and flocculants such as polyacrylamides are used to treat contaminated bodies of water in order to bind to contaminants and make it easier for removal via filtrations or other methods, thus allowing for the water to return to a clean and clear state.
  • Polyacrylamides are also safe for treatment of bodies of water such as a pool, Jacuzzi, spa, lakes, and other bodies of water where humans might swim and come in contact with the treated water.
  • polyacrylamide in effective.
  • other compounds can react and change the function group on the polyacrylamide thus changing the chemical structure of polyacrylamide.
  • polyacrylamides are incorporated into a water soluble film in order to provide an additional benefit and effect when using such film.
  • films are composed of polyvinylalcohol (PVA) with no additional components to such films. Since PVA based films can be used to fonn pods to deliver various desired chemicals to treat various bodies of water, polyacrylamides can be incorporated into the film in a uniform and functional manner, thus allowing for an additional effect to the application. This also cuts back on the need to havecoaguiants and flocculants to be administered separately or mixed with other compounds when applied thus saving time and avoiding potential compatibility issues.
  • PVA polyvinylalcohol
  • the present invention aims to provide a PVA based film with a coagulant such as polyacrylamides incorporated uniformly into the film, providing water clarification treatment with each application of such films.
  • PVA based films can be used to form pods that are filled with various chemicals for the treatment of a pool, jacuzzi, spa, lakes, and other bodies of water where humans might swim and come in contact with the treated water. Such bodies of water are desired to be clean and clear, thus the highly beneficial effect of having a water clarifier incorporated into the water soluble film regardless of the chemical that is filled into the pod. This allows for consistent application of water clarifier, and provide a more consistent methods of maintaining water clarity.
  • the present invention provides a film and a method of forming same.
  • the film can be divided into equally sized units having substantially equal amounts of each compositional component present. This advantage is particularly useful because it permits large area films to be initially formed, and subsequently cut into individual units without concern for whether each unit is compositionally equal.
  • the films of the present invention have particular applicability as delivery systems for polyacrylamides and other coagulants and flocculants.
  • a self-supporting film composition including atleast one carrier (PVA), at least one active agent (polyacrylamide).
  • PVA atleast one carrier
  • the agent can be a large scale particle, for example, a macromolecule, or individual molecules.
  • the agent can also be a small - scale particle, for example, a microparticle or a nanoparticle, or individual molecules.
  • the agent can be prepared into an emulsion that is formed into a film.
  • the agent can be present within the film from 0.1% to 60% by weight of the film.
  • the agent can be prepared into an emulsion, such emulsion can be prepared from a matrix forming polymer (e.g., PVA, mixture of various PVA grades, Pullulan or the like) and with or without a surfactant (e.g., polysorbate or the like) and a plasticizer (e.g., glycerin or the like) mixed together in an aqueous solution (e.g., water).
  • a matrix forming polymer e.g., PVA, mixture of various PVA grades, Pullulan or the like
  • a surfactant e.g., polysorbate or the like
  • a plasticizer e.g., glycerin or the like
  • aqueous solution e.g., water
  • the composition can be heated at temperature ranges of 40F to 250F, or 60F-180F, or about 100F for a period of 5 -45minutes, or 10-35 minutes or about 30 minutes to dissolve the agent and form the emulsion.
  • a suspension may also be formed.
  • the emulsion may be degassed prior to forming the film. The degassing can be performed in open air or with vacuum.
  • the emulsion can be then cast into a film.
  • the processing can by any processing that can take an emulsion and form it into a film, which processing steps are not limited to those describedherein. Examples can include extrusion, solution casting box apparatus, reverse roll coating casting, and other solution casting apparatus' known to those skilled in the art of solution casting.
  • the modified emulsion can be passed between rollers (e.g., casting rollers), and rolled onto a substrate at the desired wet gauge thickness.
  • the substrate can be a wax or silicone coated substrate that allows the film to be peeled therefrom once the film is stable.
  • the rollers can be adjusted to change the gap there between to change the wet gauge thickness of the film.
  • the film can be cured and solidified, such as by heating.
  • the film on the substrate can be passed through a heater (e.g., infrared heater) with air flow to provide convection heating, which is regulated to remove moisture from the film.
  • the film can be formed in this matter to inhibit rippling or other unfavorable characteristics, and may avoid blistering. Good throughout heating and curing can produce the desired film.
  • a similar method may also be used without the formation of an emulsion, and by the dry mixing of the film components, and the use of extrusion methods to mix all components and the formation of a film.
  • the emulsion for eventual film formation can be formed in such a method.
  • the reaction vessel is preheated and water is added to the vessel.
  • PVA is then added very slowly to the heated water under stirring, taking care to ensure full dissolving of material before additional amounts are added.
  • the polyacrylamide is then added to the mixture, also ensuring slow addition to avoid clumping.
  • sodium dodecyl sulfate and glycerin added to achieve the desired thickness of emulsion and the emulsion is then poured out of the vessel and collected. The mixture is then allowed to cool and degas. Once at room temperature the mixture can then be cast and final film is formed.
  • the emulsion is prepared by heating the reaction vessel to approximately 160F.
  • the reaction vessel is heated through the use of recirculated water through the water jacket on the reaction vessel. Water is then added to the reaction vessel and the mehcanical stirrer is set to 400RPMs. Care has to be taken to ensure that the reaction vessel is sealed, and that minimalexposure to the outside is achieved in order to avoid contaminants entering and water vapor from escaping.
  • the granulated 88% grade PVA (polymer matrix) powder is slowly added to the stirring water.
  • the stirring is gradually increased to 600RPM as more of the PVA is added to the vessel.
  • the polyacrylamide coagulant/water clarifier
  • Additional compounds such as sodium dodecyl sulfate (surfactant) and glycerin (plasticizer) are added to achieve a desired consistency of the emulsion and eventually the cast film.
  • the mixture is then poured out of the reaction vessel and collected.
  • the emulsion is allowed to cool down to room temperature and to degas in open air for 1 hour, then sealed and allowed to degas overnight. This emulsion is then cast and the final film is formed by any method known tto those skilled in the art of solution casting.
  • Polyaerylamide (MW 400,000 - 1,000,000), Poly(3-chloro-2-hydroxypropyl-2- methacryloxyethyldimethylammoniumchloride), Poly (acrilamide/2 - methacryloxyethyltrimethylammonium bromide) 80:20, 20% aq.
  • Poly(ethylene oxide-b- propylene oxide) [ratio 3: 1], Poly ( styrene sul Ibn i c acid/maleic acid), sodium salt, Poly(methacrylic acid) ammonium salt, 30% soln. in water, Poly(acrylic acid), powder [MW -1,000,000], Poly(acrylic acid), sodium salt, powder (MW ⁇ 2,000),
  • Poly(acrylamide/sodiutn acrylate) [70:30], Chitosan, Purified Powder MW 7 ⁇ 15,000, Poly(acrylic acid), 25% soln, in water [Mw -345,000], Poly(acrylic acid), sodium salt, 20% soln, in water [MW ⁇ 225,000], Polyethylene oxide) [MW 1,000,000], Poly(acrylie acid), sodium salt, 35% soln, in water [MW ⁇ 60,000], Poly(acrylic acid), powder [MW ⁇ 450,000], Poly(styrenesulfonic acid), 30% soln. in water.
  • Glycerol/glycerin Propylene Glycol; Polyethylene glycol; Fatty acids; Vegetable oil; Vegetable shortening; Olive oil; Soybean oil; Grape seed oil; Sunflower oil; Peanut oil; Corn oil; Canola oil; Rice Bran oil; Lard; Suet; Butter or coconut oil.
  • polyoxyethylene (20) sorbitan monopalmitate polyoxyethylene (20) sorbitan monopalmitate
  • Polysorbate 60 polyoxyethylene (20) sorbitan monostearate
  • Polysorbate 80 polyoxyethylene (20) sorbitan monooleate
  • Polyethylene glycol Polyethylene glycol;Monoglycerides; Diglycerides; Triglycerides; Phospholipids; Lecithin; Sodium bis(2-ethylhexyl) sulfosuccinate (AOT); or sodium mono- and dimethylnaphthalene sulfonate (SMDNS).
  • AOT Sodium bis(2-ethylhexyl) sulfosuccinate
  • SDNS sodium mono- and dimethylnaphthalene sulfonate

Abstract

La présente invention concerne des matières et un procédé d'encapsulation d'agents chimiques. En particulier, la présente invention concerne des compositions et des procédés d'encapsulation d'un coagulant ou floculant dans un agent d'encapsulation polymère soluble dans l'eau.
PCT/US2017/064270 2016-12-06 2017-12-01 Agent clarifiant encapsulé soluble dans l'eau WO2018106540A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201662430706P 2016-12-06 2016-12-06
US62/430,706 2016-12-06

Publications (1)

Publication Number Publication Date
WO2018106540A1 true WO2018106540A1 (fr) 2018-06-14

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109336238A (zh) * 2018-12-17 2019-02-15 方期洲 一种用于印染废水处理的絮凝剂及其应用

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4725378A (en) * 1982-03-22 1988-02-16 The Dow Chemical Company Systems for delayed release of bleaching agents
US5384364A (en) * 1990-07-03 1995-01-24 Ecolab Inc. Stabilized detersive-system containing water soluble film article
US5393436A (en) * 1993-02-08 1995-02-28 Diatec Polymers Method of water treatment using polyacrylamide-phosphonate flocculants
US20020077264A1 (en) * 2000-07-24 2002-06-20 The Procter & Gamble Company Articles containing enclosed compositions
US20040118711A1 (en) * 2001-04-20 2004-06-24 Duffield Paul John Water soluble containers comprising at least two compartments
US20060049076A1 (en) * 2002-08-07 2006-03-09 Reckitt Benckiser (Uk) Limited Containers
US20160130538A1 (en) * 2013-06-19 2016-05-12 Conopco, Inc., D/B/A Unilever Multi-compartment water-soluble capsules
US20160230131A1 (en) * 2007-01-18 2016-08-11 Reckitt Benckiser N.V. Dosage element and a method of manufacturing a dosage element

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4725378A (en) * 1982-03-22 1988-02-16 The Dow Chemical Company Systems for delayed release of bleaching agents
US5384364A (en) * 1990-07-03 1995-01-24 Ecolab Inc. Stabilized detersive-system containing water soluble film article
US5393436A (en) * 1993-02-08 1995-02-28 Diatec Polymers Method of water treatment using polyacrylamide-phosphonate flocculants
US20020077264A1 (en) * 2000-07-24 2002-06-20 The Procter & Gamble Company Articles containing enclosed compositions
US20040118711A1 (en) * 2001-04-20 2004-06-24 Duffield Paul John Water soluble containers comprising at least two compartments
US20060049076A1 (en) * 2002-08-07 2006-03-09 Reckitt Benckiser (Uk) Limited Containers
US20160230131A1 (en) * 2007-01-18 2016-08-11 Reckitt Benckiser N.V. Dosage element and a method of manufacturing a dosage element
US20160130538A1 (en) * 2013-06-19 2016-05-12 Conopco, Inc., D/B/A Unilever Multi-compartment water-soluble capsules

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109336238A (zh) * 2018-12-17 2019-02-15 方期洲 一种用于印染废水处理的絮凝剂及其应用

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