WO2023186333A1 - Rouleau de papier faisant office de système de commande de diffusion de parfum - Google Patents

Rouleau de papier faisant office de système de commande de diffusion de parfum Download PDF

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Publication number
WO2023186333A1
WO2023186333A1 PCT/EP2022/060719 EP2022060719W WO2023186333A1 WO 2023186333 A1 WO2023186333 A1 WO 2023186333A1 EP 2022060719 W EP2022060719 W EP 2022060719W WO 2023186333 A1 WO2023186333 A1 WO 2023186333A1
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WO
WIPO (PCT)
Prior art keywords
suspension
paper roll
filter
fragrance
surfactant
Prior art date
Application number
PCT/EP2022/060719
Other languages
English (en)
Inventor
Alejandro CASTRO MORALES
Amadeo CABRERA
Daniel Flores
John Teffenhart
Original Assignee
Symrise Ag
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 Symrise Ag filed Critical Symrise Ag
Publication of WO2023186333A1 publication Critical patent/WO2023186333A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/50—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by form
    • D21H21/52—Additives of definite length or shape
    • D21H21/54—Additives of definite length or shape being spherical, e.g. microcapsules, beads
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/002—Tissue paper; Absorbent paper
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
    • A47K10/24—Towel dispensers, e.g. for piled-up or folded textile towels; Toilet-paper dispensers; Dispensers for piled-up or folded textile towels provided or not with devices for taking-up soiled towels as far as not mechanically driven
    • A47K10/32—Dispensers for paper towels or toilet-paper
    • A47K2010/322—Dispensers for paper towels or toilet-paper with means for deodorizing the ambient air

Definitions

  • the present invention relates to a paper roll, which besides its normal function, has additionally a function as fragrance control release system. Further, the present invention relates to a method for manufacturing said paper roll, as well as to a household product or consumer product, for instance a toilet paper roll, comprising said paper roll.
  • Air fresheners are consumer products that typically emit fragrance and are used in homes or commercial interiors such as restrooms, foyers, hallways, vestibules and other smaller indoor areas, as well as larger areas such as hotel lobbies, auto dealerships, medical facilities, public arenas and other large interior spaces.
  • Different types of air fresheners are available on the market, e.g., liquids, gels, solids in the form of diffusers, reeds, plug-ins, fans, electrical units.
  • toilet paper rolls wherein the inner side of toilet paper cardboard roll is impregnated by oil fragrances.
  • the complex object of the present invention was to provide a paper roll, in particular a toilet paper roll which, besides its normal function in a toilet paper roll, has additionally a function as fragrance control release system solving the problems and disadvantages of the toilet paper rolls mentioned above.
  • a subject matter of the invention is a suspension consisting of
  • Microcapsules having a core material encapsulated within a microcapsule shell, said core material comprises at least one fragrance oil.
  • liquid medium wherein said liquid medium comprises or consists of
  • a toilet paper roll containing a toilet paper roll impregnated with the suspension according to present invention allows the controlled release of the encapsulated fragrance, so that a constant fragrance reactivation in the room (bathrooms and toilets) occurs.
  • a long-lasting effect is achieved, that brings freshness, cleanliness and an enhancing aroma in the interior space.
  • the suspension according to present invention shows not only a high storage stability, but also a high stability under the conditions used in the manufacturing-process of the paper roll.
  • a "slurry" in the sense of the invention is nothing other than a particulate core-shell microcapsule suspension in water.
  • the microcapsules (component (a)) are present in an amount from about 10 % wt. to about 30 % wt., relative to the weight of the suspension. More preferably, the microcapsules (component (a)) are present in an amount of about 12 % wt., relative to the weight of the suspension.
  • the at least one surfactant (component (b1)) is present in an amount from about 0.5 % wt. to about 1.5 % wt., relative to the weight of the suspension. More preferably, the at least one surfactant (component (b1)) is present in an amount of about 1 % wt., relative to the weight of the suspension.
  • the at least one fragrance oil (component (b2)) is present in an amount from about 60 % wt. to about 70 % wt., relative to the weight of the suspension. More preferably, the at least one fragrance oil (component (b2)) is present in an amount of about 64 % wt., relative to the weight of the suspension.
  • the at least one deflocculant agent (component (b3)) is present in an amount from about 0,02 % wt. to about 0,08 % wt., relative to the weight of the suspension. More preferably, the at least one deflocculant agent (component (b3)) is present in an amount of about 0,05 % wt. relative to the weight of the suspension.
  • water (component (b4)) is present in an amount from about 5 % wt. to 30 % wt., relative to the weight of the suspension. More preferably, water (component (b4)) is present in an amount from about 10 % wt. to 25 % wt., relative to the weight of the suspension.
  • the suspension according to the invention consists of:
  • Microcapsules having a core material encapsulated within a microcapsule shell, said core material comprises at least one fragrance oil, in an amount in the range of from about 10 % wt. to about 30 % wt.
  • liquid medium comprises or consists of
  • (b1) at least one surfactant in an amount in the range of from about 0.5 % wt. to about 1.5 % wt.
  • (b2) at least one fragrance oil in an amount in the range of from about 60 % wt. to about 70% wt.
  • (b3) at least one deflocculant agent in an amount in the range of from about 0.02 % wt. to about 0.08% wt., and optionally
  • the suspension according to the invention consists of:
  • Microcapsules having a core material encapsulated within a microcapsule shell, said core material comprises at least one fragrance oil, in an amount of about 12 % wt.
  • (b1) at least one surfactant in an amount of about 1.0 % wt.
  • fragrance oils are enclosed in a microcapsule and released in a controlled manner.
  • the aroma function is initiated according to a "release-on- demand” principle, i.e., the capsules burst on mechanical contact, releasing the fragrance contained within.
  • a “fragrance oil” comprises at least one or more odorous compounds.
  • fragment oil is well-known for one skilled in the art, and there is no need to further specification of these substances.
  • a “core-shell microcapsule, “ or more generically a “microcapsule” or “capsule,” is a substantially spherical structure having a well-defined core and a well-defined envelope or wall.
  • the "core” is composed of any active material or material submitted to microencapsulation.
  • the “wall” is the structure around the active material core being microencapsulated.
  • the wall of the microcapsule is made of a continuous, polymeric phase with an inner surface and outer surface. The inner surface is in contact with the microcapsule core. The outer surface is in contact with the environment in which the microcapsule resides.
  • the wall protects the core against deterioration by oxygen, moisture, light, and effect of other compounds or other factors (e.g. deterioration due to acidic or basic pH values); limits the losses of volatile core materials; and releases the core material under desired conditions.
  • the core-shell microcapsules of this invention provide controlled release of the active material.
  • controlled release refers to retention of the active material in the core until a specified triggering condition - in case of the present invention friction - occurs.
  • the fragrances of the liquid suspension medium are released, creating a pleasant atmosphere in the room.
  • the cylinder-shaped toilet paper roll rotates on the roll holder, which supports it. Due to the friction, the capsules burst releasing the fragrance contained within. Consequently, each time that the toilet paper is used, a fragrance reactivation in the room (bathrooms and toilets) occurs.
  • WO 2013 026657 A1 (UNILEVER) describes active substance particles whose outer surface is composed of no-ionic polysaccharides, including hydroxypropyl guar, which is disclosed as a capsule wall component.
  • Core-shell capsules with a capsule wall of polycarboxylic acids are known from WO 2014/064255 A2 (GIVAUDAN). Described is stabilization of the capsules during storage in a medium at a specified pH.
  • capsules are preferred, in which the wall is formed of a polymer such as a urea-formaldehyde polymer, a melamine-formaldehyde polymer, a phenolic-formaldehyde polymer, a urea-glutaraldehyde polymer, a melamineglutaraldehyde polymer, a phenolic-glutaraldehyde polymer, polyurea, polyurethane, polyacrylate, polyamide, polyester, an epoxy cross-linked polymer, a polyfunctional carbodiimide cross-linked polymer, silica, a silica-derived material, polysiloxanes, polyimide, polyvinyl alcohol, polyanhydride, polyolefin, polysulfone, polysaccharide, protein, polylactide (PLA), polyglycolide (PGA), polyorthoester, polyphosphazene, silicone, lipid, modified
  • a polymer such as a ure
  • Suitable polymeric materials are ethylene maleic anhydride copolymer, styrene maleic anhydride copolymer, ethylene vinyl acetate copolymer, and lactide glycolide copolymer.
  • Biopolymers and modified biopolymers are derived from alginate, chitosan, collagen, dextran, maltodextrins and starch can also be used as the encapsulating materials. Additionally, microcapsules can be made via the simple or complex coacervation of maltodextrins.
  • Preferred encapsulating wall polymers include those formed from isocyanates, acrylates, acrylamide, acrylate-co-acrylamide, hydrogel monomers, sol-gel precursors, maltodextrins, melamine-formaldehyde or urea-formaldehyde condensates, as well as similar types of aminoplasts. Said capsules are particularly preferred. Thus, it was observed that the use of said capsules is especially advantageous, since these capsules shows a notable stability under the manufacturing conditions of the paper roll.
  • microcapsules (component(a)) according to the present invention are free of formaldehyde.
  • the core material of the microcapsules comprises at least one fragrance oil.
  • the selection of the fragrance oils to be encapsulated is not critical per se and is determined exclusively by the desired application. The only limiting factor is that these must either be present as oil or be sufficiently oil-soluble, i.e. lipophilic, to dissolve in an oil phase, and the fragrance must not have components that affect the core-shell microcapsule wall chemistry .
  • Suitable fragrances are well-known for one skilled in the art, and there is no need to further specification of these substances. However, suitable fragrances are described for example in US 2021/0269739 A1, WO 2015/023961 A1, US 2014/0287008 A1, US 2018/0049957 A1 and W018050248 A1.
  • the at least surfactant (component (b1)) is or comprises a non-ionic surfactant.
  • the surfactants may be low and high HLB (hydrophilic-lipophilic) or mixtures thereof.
  • the surfactant (component (b1)) is selected from the group consisting of polysorbates and Ethoxylated hydrogenated castor oil esters (commercially available for example under the tradenames Chremophor®, ALPICARE®, EUMULGIN ®, polyoxyl 35) or mixtures thereof.
  • said polysorbates are selected from the group consisting of polyethylene glycol sorbitan monolaurate (TweenTM 20; Croda Americas, Inc), polyoxyethylene sorbitan monooleate (TweenTM 80; Croda Americas, Inc) or mixtures thereof
  • the surfactant (component (b1)) is selected from the group consisting polysorbate, particularly preferred from the group consisting of polyethylene glycol sorbitan monolaurate (Tween 20), polyoxyethylenesorbitan monooleate (Tween 80) or mixtures thereof.
  • the surfactant (component (b1)) is polyoxyethylene sorbitan monooleate (TweenTM 80).
  • the liquid medium of the suspension contains also at least one fragrance oil (component (b2)).
  • This/these fragrance oil/s may be the same or different as the fragrance oil of the core material in the microcapsules; therefore, the above explanations apply also to component (b2) of the liquid medium of the suspension.
  • the liquid medium of the suspension contains also at least one deflocculant agent (component (b3)).
  • Deflocculants are substances used for preventing the formation of agglomerates. These substances are well-known for one skilled in the art.
  • the at least one deflocculant agent is selected from the group consisting of humic acids and derivatives, alkaline lignosulfonates, tannin compounds, polyacrylates and acrylic derivatives, acrylate copolymers, cationic acrylamide copolymers polycarbonates, sodium citrate, polysaccharides, sodium and potassium carbonates, sodium and potassium hydroxides, sodium silicates, phosphates and polyphosphates, sodium and ammonium oxalates and mixtures thereof.
  • the at least one deflocculant agent is selected from the group consisting of polyacrylates and acrylic derivatives, acrylate copolymers, cationic acrylamide copolymers polycarbonates, polysaccharides, tannins, silicates and mixtures thereof.
  • the at least one deflocculant agent (component (b3)) is selected from the group consisting of polyacrylamide cationically modified, acrylate copolymers, cationic acrylamide copolymers polycarbonates, polysaccharides, and mixtures thereof.
  • the at least one deflocculant agent (component (b3)) is selected polyacrylamide cationically modified (Rheovis CSP @ 2.5% /W; BASF SE 67056 Ludwigshafen, Germany). This compound was particularly efficient avoiding the formation of agglomerates, which could lock the nozzle used for applying the suspension in the paper cardboard.
  • the suspension according to the present invention is free of formaldehyde.
  • the further auxiliaries and/or additives may be selected from the group consisting of antidandruff agents, irritation-preventing agents, irritation- inhibiting agents, antioxidants, astringents, antiseptic agents, anti-statics, binders, buffers, carrier materials, chelating agents, cell stimulants, cleansing agents, care agents, softeners, emulsifiers, enzymes, fibres, film-forming agents, fixatives, foam-forming agents, foam stabilizers, substances for preventing foaming, foam boosters, gelling agents, gel- forming agents, hair care agents, hair-setting agents, hair-straightening agents, moisturedonating agents, moisturizing substances, moisture-retaining substances, bleaching agents, strengthening agents, optically brightening agents, gloss agents, polymers, powders, proteins, re-oiling agents, silicones, hair promotion agents, cooling agents, skin-cooling agents, warming agents, skin-warming agents, stabilizers, UV-absorbing agents, UV filters, thicken
  • the present invention concerns further to a method for manufacturing the suspension disclosed above comprising or consisting of the following steps:
  • step (c) mixing the aqueous solution of step (a) and the suspension of step (b).
  • step (d2) mixing the at least one surfactant with at least one fragrance oil for a period from about 10 to about 20 minutes, wherein the mixture of step (c) is free of surfactant.
  • step (e) combining the at least one fragrance oil of step (d1) or the mixture of step (d2) to the mixture of step (c) and stirring the obtained composition for a period from about 10 to about 30 minutes with a rotary speed in the range from about 400 to about 900 rpm.
  • the method for manufacturing the suspension according to the present invention offers two alternatives, each comprising or consisting of the following steps:
  • step (c) is carried out with a rotary speed in the range from about 200 to about 600 rpm, more preferably with a rotary speed in the range from about 300 to about 500 rpm., and most preferably with a rotary speed in the range of about 350 rpm.
  • step (c) is performed from about 2 to about 10 minutes, more preferably from about 4 to about 8 minutes, and most preferably for a period of about 5 minutes.
  • step (c) is performed with a rotary speed in the range of about 350 rpm for a period of about 5 minutes, in order to ensure the obtention of a homogenous mixture without damaged microcapsules.
  • step (d2) is performed for a period from about 15 to about 20 minutes.
  • step (d2) is carried out with a rotary speed in the range from about 600 to about 900 rpm.
  • step (d) is performed for a period from about 15 to about 20 minutes with a rotary speed in the range from about 600 to about 900 rpm.
  • step (c) is performed with a rotary speed in the range of about 350 rpm for a period of about 5 minutes and step (d) is performed for a period from about 15 to about 20 minutes with a rotary speed in the range from about 600 to about 900 rpm.
  • a further subject matter of the present invention is a paper roll comprising the suspension disclosed above.
  • the inner side of the paper roll is impregnated by the suspension disclosed above.
  • the paper roll comprises an amount from about 0.06 g/roll to 0.12 g/roll of the suspension disclosed above, more preferably an amount of 0.1 gr/roll. This amount ensures function as fragrance control release system and the cardboard tube resistance under the manufacturing conditions of the paper roll.
  • the paper roll is a toilet paper roll.
  • the present invention further concerns a method for manufacturing a paper roll disclosed above, comprising or consisting of the following steps: (a) Providing a suspension disclosed above.
  • step (b) Placing the suspension of step (a) onto a tank and subjecting said suspension to be homogenised.
  • step (b) In a preferably embodiment common process transfer methods such as pump or gravity are used to perform step (b).
  • Step (c) can optionally include an additional filtration to eliminate foreign materials.
  • the air pressure in step (d) is adjusted to about 1 to 5 bar, more preferably adjusted to about 1.5 to bar, and most preferably to about 2.0 bar.
  • the filter constructed using metal or inert plastic of the line is selected form the group consisting of Filter 45-Mesh, Filter 50-Mesh, Filter 60-Mesh, Filter 70-Mesh, Filter 100-Mesh and Filter 120-Mesh, more preferably selected form the group consisting of Filter 60-Mesh, Filter 70-Mesh and Filter 100-Mesh.
  • the filter of the line is Filter 70- Mesh.
  • the diameter of the nozzle in steps (c) and (e) is 0.3-0.6 mm, more preferably 0.5 mm.
  • the nozzle in step (e) may contain specific elements within to produce desired spray ribbon pattern.
  • the air pressure in step (d) is adjusted to about 2.0 bar (to get an appropriate flow dosage)
  • filter of the line is Filter 70-Mesh and the diameter of the nozzle is 0.5 mm.
  • the method of the present invention ensure also that the suspension is homogeneous applied in the paper roll, which allows a maximal efficiency deodorizing bathrooms and toilets.
  • the present invention concerns further to the use of the paper roll mentioned above as fragrance control release system.
  • the present invention concerns to a household product or consumer product comprising the paper roll mentioned above.
  • said household product or consumer product is selected from the group consisting of toilet paper roll, kitchen towels, pre-moistened wipes.
  • said household product or consumer product is a toilet paper roll.
  • the free oil fragrance of the microcapsules (component (a)) and the free oil fragrance of the liquid medium (component (b)) in TPR are different.
  • composition regarding the oil fragrances of TPR and CTPR are identical. The same applies to the amount of paper contained in TPR and CTPR.
  • TPR The inner side of toilet paper cardboard roll of TPR was impregnated with a suspension according to the present the present invention (0.1 g/roll). TPR was packed into a hermetic plastic bag and kept to 25°C during 3 to 7 days for maceration.
  • CTPR The inner side of toilet paper cardboard roll of CTPR was also impregnated with the oil fragrance (0.1 g/roll). CTPR was packed into a hermetic plastic bag and kept to 25°C during 3 to 7 days for maceration.
  • the performance was evaluated regarding the hedonic and sensorial properties under controlled condition of temperature into a cabin under controlled conditions (at 25 and 40 °C) for a week.
  • the evaluation was carried out by a plurality of testers (6 experts) by smelling the environment in the cabin and in comparison, with one another.
  • TPR and CTPR were placed in the cabin, as illustrated in figure 1.
  • TPR- and CTPR -uses were then carried out, in each of which exactly the same amount of paper was taken (14 uses were evaluated, 2 uses /day, both uses in a time interval of 6 hours).

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  • Paper (AREA)

Abstract

La présente invention concerne un rouleau de papier, qui en plus de sa fonction normale, présente en outre une fonction de système de commande de diffusion de parfum. En outre, la présente invention concerne un procédé de fabrication dudit rouleau de papier, ainsi qu'un produit ménager ou un produit de consommation, par exemple un rouleau de papier hygiénique, comprenant ledit rouleau de papier.
PCT/EP2022/060719 2022-03-30 2022-04-22 Rouleau de papier faisant office de système de commande de diffusion de parfum WO2023186333A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202263325259P 2022-03-30 2022-03-30
US63/325,259 2022-03-30

Publications (1)

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WO2023186333A1 true WO2023186333A1 (fr) 2023-10-05

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US20210269739A1 (en) 2018-07-25 2021-09-02 International Flavors & Fragrances Inc. Liquid fragrance compositions
US20220071863A1 (en) * 2018-12-18 2022-03-10 International Flavors & Fragrances Inc. Microcapsule compositions prepared from polysaccharid
WO2020233773A1 (fr) 2019-05-17 2020-11-26 Symrise Ag Macroémulsion huile-dans-eau
WO2021073775A1 (fr) 2019-10-16 2021-04-22 Symrise Ag Articles pour le transfert indirect d'agents actifs cosmétiques sur la peau

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