WO2020231351A3 - A method for preparing an essential oil emulsion - Google Patents

A method for preparing an essential oil emulsion Download PDF

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Publication number
WO2020231351A3
WO2020231351A3 PCT/TH2020/000027 TH2020000027W WO2020231351A3 WO 2020231351 A3 WO2020231351 A3 WO 2020231351A3 TH 2020000027 W TH2020000027 W TH 2020000027W WO 2020231351 A3 WO2020231351 A3 WO 2020231351A3
Authority
WO
WIPO (PCT)
Prior art keywords
essential oil
vinyl monomer
preparing
polyvinyl alcohol
temperature
Prior art date
Application number
PCT/TH2020/000027
Other languages
French (fr)
Other versions
WO2020231351A2 (en
Inventor
Kawee SRIKULKIT
Sawitree SINTHU
Sireerat CHARUCHINDA
Original Assignee
Chulalongkorn University
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
Priority claimed from TH1901002524A external-priority patent/TH1901002524A/en
Application filed by Chulalongkorn University filed Critical Chulalongkorn University
Publication of WO2020231351A2 publication Critical patent/WO2020231351A2/en
Publication of WO2020231351A3 publication Critical patent/WO2020231351A3/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/92—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof
    • A61K8/922—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof of vegetable origin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/04—Dispersions; Emulsions
    • A61K8/06—Emulsions
    • A61K8/062—Oil-in-water emulsions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q15/00—Anti-perspirants or body deodorants
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Birds (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Epidemiology (AREA)
  • Dispersion Chemistry (AREA)
  • Dermatology (AREA)
  • Polymerisation Methods In General (AREA)
  • Colloid Chemistry (AREA)

Abstract

The present invention relates to a method for preparing an essential oil emulsion comprising the steps of: (a) preparing a polyvinyl alcohol solution at a concentration of 1-2%wt by gradually adding polyvinyl alcohol powder in water, heating at a temperature of 50-75°C, and stirring continuously to obtain the polyvinyl alcohol solution, (b) preparing a mixture of vinyl monomer and essential oil with a volume ratio of vinyl monomer to essential oil in a range of 1:1-5 by weighing vinyl monomer and essential oil and mixing them in a container to obtain the mixture of vinyl monomer and essential oil, gradually adding the mixture from the step (b) to the polyvinyl alcohol solution from the step (a), adding an initiator at 1-2%wt of vinyl monomer, continuously purging the solution surface with nitrogen gas, continuously stirring the solution and maintaining the temperature in a range of 80-85°C for 2-5 hr to obtain an opaque, white essential oil emulsion, discontinuing heating and keeping stirring for 2-5 hr until the temperature returns to a room temperature to obtain a homogeneous, opaque, white emulsion with no precipitation.
PCT/TH2020/000027 2019-04-24 2020-04-24 A method for preparing an essential oil emulsion WO2020231351A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TH1901002524 2019-04-24
TH1901002524A TH1901002524A (en) 2019-04-24 Method for preparing essential oil emulsion

Publications (2)

Publication Number Publication Date
WO2020231351A2 WO2020231351A2 (en) 2020-11-19
WO2020231351A3 true WO2020231351A3 (en) 2021-03-25

Family

ID=73289405

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/TH2020/000027 WO2020231351A2 (en) 2019-04-24 2020-04-24 A method for preparing an essential oil emulsion

Country Status (1)

Country Link
WO (1) WO2020231351A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020231351A2 (en) * 2019-04-24 2020-11-19 Chulalongkorn University A method for preparing an essential oil emulsion

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101411342A (en) * 2008-10-09 2009-04-22 东华大学 Method for preparing plant source microcapsule dressing agent for preventing mosquito
WO2015165834A1 (en) * 2014-04-29 2015-11-05 Basf Se Anionic polyvinyl alcohol copolymer as protective colloid for pesticidal polyurea microcapsules
WO2018064393A1 (en) * 2016-09-30 2018-04-05 President And Fellows Of Harvard College Materials including polymeric fibers incorporating microcapsules or nanocapsules including an essential oil
WO2019002380A1 (en) * 2017-06-27 2019-01-03 Firmenich Sa Process for preparing microcapsules
WO2020231351A2 (en) * 2019-04-24 2020-11-19 Chulalongkorn University A method for preparing an essential oil emulsion

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101411342A (en) * 2008-10-09 2009-04-22 东华大学 Method for preparing plant source microcapsule dressing agent for preventing mosquito
WO2015165834A1 (en) * 2014-04-29 2015-11-05 Basf Se Anionic polyvinyl alcohol copolymer as protective colloid for pesticidal polyurea microcapsules
WO2018064393A1 (en) * 2016-09-30 2018-04-05 President And Fellows Of Harvard College Materials including polymeric fibers incorporating microcapsules or nanocapsules including an essential oil
WO2019002380A1 (en) * 2017-06-27 2019-01-03 Firmenich Sa Process for preparing microcapsules
WO2020231351A2 (en) * 2019-04-24 2020-11-19 Chulalongkorn University A method for preparing an essential oil emulsion

Also Published As

Publication number Publication date
WO2020231351A2 (en) 2020-11-19

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