EP2543265B1 - Preparation method of E-cigarette liquid - Google Patents

Preparation method of E-cigarette liquid Download PDF

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Publication number
EP2543265B1
EP2543265B1 EP12155467.9A EP12155467A EP2543265B1 EP 2543265 B1 EP2543265 B1 EP 2543265B1 EP 12155467 A EP12155467 A EP 12155467A EP 2543265 B1 EP2543265 B1 EP 2543265B1
Authority
EP
European Patent Office
Prior art keywords
extract
cigarette liquid
chocolate
tobacco
chocolate powder
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.)
Not-in-force
Application number
EP12155467.9A
Other languages
German (de)
French (fr)
Other versions
EP2543265A2 (en
EP2543265A3 (en
Inventor
Junxiang Zheng
Zhixuan Zheng
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Individual
Original Assignee
Individual
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Filing date
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Publication of EP2543265A2 publication Critical patent/EP2543265A2/en
Publication of EP2543265A3 publication Critical patent/EP2543265A3/en
Application granted granted Critical
Publication of EP2543265B1 publication Critical patent/EP2543265B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24BMANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18Treatment of tobacco products or tobacco substitutes
    • A24B15/24Treatment of tobacco products or tobacco substitutes by extraction; Tobacco extracts
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24BMANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10Chemical features of tobacco products or tobacco substitutes
    • A24B15/16Chemical features of tobacco products or tobacco substitutes of tobacco substitutes
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24BMANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10Chemical features of tobacco products or tobacco substitutes
    • A24B15/16Chemical features of tobacco products or tobacco substitutes of tobacco substitutes
    • A24B15/167Chemical features of tobacco products or tobacco substitutes of tobacco substitutes in liquid or vaporisable form, e.g. liquid compositions for electronic cigarettes
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24BMANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18Treatment of tobacco products or tobacco substitutes
    • A24B15/28Treatment of tobacco products or tobacco substitutes by chemical substances
    • A24B15/30Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances
    • A24B15/302Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances by natural substances obtained from animals or plants
    • A24B15/303Plant extracts other than tobacco
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24FSMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/10Devices using liquid inhalable precursors

Definitions

  • This invention relates to a kind of preparation method of E-cigarette liquid which belongs to the field of chemical preparing technology.
  • E-cigarette liquid (or E-cigarette atomizing liquid) is the popular cigarette substitute product currently. Concerning the mixing prescription, preparation process, health caring function and other aspects of E-cigarette liquid, there has been many documentary or patented reports. Mixed by 25-90 proportions of polyethylene glycol, 9-50 proportions of propylene glycol and 0.3-52 proportions of taste regulator, a kind of electronic simulation cigarette atomizing liquid disclosed by Chinese patent 200910104922.6 belongs to typical essence and spice mixing products.
  • CN101473999A discloses a kind of E-cigarette liquid mainly comprising 3-5% w/v of a tobacco leaf extract, 40-50%w/v of propylene glycol, 10-15%w/v of purified water, 3-5%w/v of tobacco flavor essence, 0.2-1 %w/v of a stabilizer, 3-8%w/v of a thickener, 0.5-4%w/v of xylitol, 0.5-4%w/v of L-arabinose and 3-9%w/v of sodium fluoride solution.
  • a method of preparing the E-cigarette liquid is not disclosed, and the ingredients as used are not substantially the same as the present invention.
  • CN101461565A also discloses a kind of E-cigarette liquid mainly comprising 3-5%w/v of tobacco leaf extract, 40-50%w/v of propylene glycol, 10-15%w/v of purified water, 3-5%w/v of tobacco flavor essence, 0.2-1.0%w/v of stabilizer, 3-8%w/v of thickener and 15-20%w/v of medicament, and the medicament may comprises various of herbal ingredients and/ or pharmaceutical ingredients.
  • a method of preparing the E-cigarette liquid is not disclosed, and the ingredients as used are not substantially the same as the present invention.
  • the purpose of this invention is to provide a kind of preparation method of E-cigarette liquid. Letting the natural aroma elements of tobacco enter the E-cigarette liquid, this method makes the aroma and taste come from the tobacco and be closer to those of cigarettes, which can cater to the smoking feeling of customers and makes the time much longer for keeping the natural aroma in cigarette liquid.
  • E-cigarette liquid should be prepared according to the plan. First, get the tobacco (weight) in an amount of 5-20% (w/v) of the E-cigarette liquid (volume) and put the tobacco into an extracting tank. Then add a mixed solvent into the extracting tank and soak the tobacco for 30-100 minutes. After heating the tobacco up to 40-60°C and extract the tobacco with warm soak for 2-8 hours to obtain an extract, filter the extract and get a filtrate. Then add chocolate extract in an amount of 1-10% (w/v) of the E-cigarette liquid into the filtrate to obtain a mixture, and stir the mixture for 20-40 minutes.
  • the preparation of the mixed solvent above is to respectively get the propylene glycol and/or polyethylene glycol in an amount of 30-80% w/v of the E-cigarette liquid and 0.1-0.5% w/v of tween 80, and then stir them for 20-40 minutes to get the uniformly mixed solvent.
  • the preparation of chocolate extract above includes the following steps: Smash chocolate to 20-60 sections to obtain chocolate powder and put the chocolate powder into an extracting tank with interlayer, add distilled water in a weight 3-10 times of the chocolate powder, soak the chocolate powder for 30-90 minutes and heat the chocolate powder up to 80-90°C, extract the chocolate powder with heat preservation for 2-6 hours to obtain a chocolate powder extract, pour out and filter the chocolate powder extract and keep the residue for other functions, then decompress and concentrate the chocolate powder extract to unconcentrated extract in a proportion of 1.1-1.4 to get the chocolate extract.
  • propylene glycol or polyethylene glycol solvent and tween 80 above are all with the officinal or edible level, among which propylene glycol and polyethylene glycol can be used solely as well as in combination.
  • Case 1 Plan to prepare 500 liters of E-cigarette liquid. Get 50 kilograms of tobacco and put into the extracting tank with interlayer; respectively get 350 liters of propylene glycol and 1 liter of tween 80, then pour the latter into the former and stir the mixture for 30 minutes. Add the mixed liquor into the extracting tank and soak the tobacco for 50 minutes. Then use steam to heat it up to 50°C through the interlayer. After extracting with heat preservation for 4 hours, pour out the extract and filter it to get the filtrate. Add 18 kilograms of chocolate extract into the filtrate and stir the mixture for 30 minutes. Then add 500 liters of propylene glycol into the filtrate to complement the planning preparation and stir the mixture for 35 minutes to get the E-cigarette liquid.
  • Case 2 Plan to prepare 500 liters of E-cigarette liquid. Get 50 kilograms of tobacco and put into the extracting tank with interlayer; get and mix 380 liters of propylene glycol and polyethylene glycol according to the proportion of 1:1, and get 1.5 liters of tween 80. Pour the tween 80 into the mixture of propylene glycol and polyethylene glycol and stir it for 40 minutes and then add it to the extracting tank and soak the tobacco for 60 minutes. Use steam to heat it up to 60°C through the interlayer. After extracting with heat preservation for 6 hours, pour out the extract and filter it to get the filtrate. Add 20 kilograms of chocolate extract into the filtrate and stir the mixture for 40 minutes. Then add 500 liters of polyethylene glycol into the filtrate and stir the mixture for 30 minutes to get the E-cigarette liquid.

Description

    Field of Technology
  • This invention relates to a kind of preparation method of E-cigarette liquid which belongs to the field of chemical preparing technology.
  • Background Technology
  • E-cigarette liquid (or E-cigarette atomizing liquid) is the popular cigarette substitute product currently. Concerning the mixing prescription, preparation process, health caring function and other aspects of E-cigarette liquid, there has been many documentary or patented reports. Mixed by 25-90 proportions of polyethylene glycol, 9-50 proportions of propylene glycol and 0.3-52 proportions of taste regulator, a kind of electronic simulation cigarette atomizing liquid disclosed by Chinese patent 200910104922.6 belongs to typical essence and spice mixing products. Mixed by 3-5%w/v of tobacco extractive, 3-5% w/v of tobacco spice, 0-3% w/v of nicotine, 0.2-1% w/v of stabilizing agent, 3-8% w/v of thickener, 5-10% w/v of pure water, 50-70% w/v of propylene glycol and other elements like codeine phosphate, chlortrimeton etc., though it uses tobacco extractive, the electronic cigarette atomizing liquid disclosed by Chinese patent 200910310536.2 is still the product that imitates cigarette taste and mixes by tobacco extractive as well as other spices. Due to the reason that more and more smokers begin to adopt E-cigarette to replace cigarette, some shortcomings of the electronic cigarette liquid used in these E-cigarettes become more obvious. It is generally reflected by smokers that although E-cigarettes have the similar appearance, feeling and smog like those of cigarettes, there is a rather wide gap between them in the aspects of aroma and taste, especially the products mixed by various essence and spices that make smokers feel hard to accept or get used to. In addition, it is also the general problem of users that it is difficult for current aroma elements of E-cigarette liquid to retain for a long time that the best ones can only be kept for about half a year during which the "smell of cigarette" will become thin or just disappear. Those shortcomings influence the quality of E-cigarette to a great extent and restrict the popularity and prevalence of E-cigarette meanwhile.
  • CN101473999A discloses a kind of E-cigarette liquid mainly comprising 3-5% w/v of a tobacco leaf extract, 40-50%w/v of propylene glycol, 10-15%w/v of purified water, 3-5%w/v of tobacco flavor essence, 0.2-1 %w/v of a stabilizer, 3-8%w/v of a thickener, 0.5-4%w/v of xylitol, 0.5-4%w/v of L-arabinose and 3-9%w/v of sodium fluoride solution. A method of preparing the E-cigarette liquid is not disclosed, and the ingredients as used are not substantially the same as the present invention.
  • CN101461565A also discloses a kind of E-cigarette liquid mainly comprising 3-5%w/v of tobacco leaf extract, 40-50%w/v of propylene glycol, 10-15%w/v of purified water, 3-5%w/v of tobacco flavor essence, 0.2-1.0%w/v of stabilizer, 3-8%w/v of thickener and 15-20%w/v of medicament, and the medicament may comprises various of herbal ingredients and/ or pharmaceutical ingredients. Again, a method of preparing the E-cigarette liquid is not disclosed, and the ingredients as used are not substantially the same as the present invention.
  • Contents of Invention
  • Aiming at the shortcomings like bad aroma and taste, short time for keeping the essence etc. existing in the E-cigarettes, the purpose of this invention is to provide a kind of preparation method of E-cigarette liquid. Letting the natural aroma elements of tobacco enter the E-cigarette liquid, this method makes the aroma and taste come from the tobacco and be closer to those of cigarettes, which can cater to the smoking feeling of customers and makes the time much longer for keeping the natural aroma in cigarette liquid.
  • This invention Will Be Implemented According to the Technical Proposals Below
  • Certain amount of E-cigarette liquid should be prepared according to the plan. First, get the tobacco (weight) in an amount of 5-20% (w/v) of the E-cigarette liquid (volume) and put the tobacco into an extracting tank. Then add a mixed solvent into the extracting tank and soak the tobacco for 30-100 minutes. After heating the tobacco up to 40-60°C and extract the tobacco with warm soak for 2-8 hours to obtain an extract, filter the extract and get a filtrate. Then add chocolate extract in an amount of 1-10% (w/v) of the E-cigarette liquid into the filtrate to obtain a mixture, and stir the mixture for 20-40 minutes. After that, complement the E-cigarette liquid to 100% of a volume of the E-cigarette liquid as planned to be prepared by adding in propylene glycol or polyethylene glycol to obtain a second mixture, and then stir the second mixture until the second mixture is mixed uniformly to obtain a finished product being the E-cigarette liquid.
  • The preparation of the mixed solvent above is to respectively get the propylene glycol and/or polyethylene glycol in an amount of 30-80% w/v of the E-cigarette liquid and 0.1-0.5% w/v of tween 80, and then stir them for 20-40 minutes to get the uniformly mixed solvent.
  • The preparation of chocolate extract above includes the following steps: Smash chocolate to 20-60 sections to obtain chocolate powder and put the chocolate powder into an extracting tank with interlayer, add distilled water in a weight 3-10 times of the chocolate powder, soak the chocolate powder for 30-90 minutes and heat the chocolate powder up to 80-90°C, extract the chocolate powder with heat preservation for 2-6 hours to obtain a chocolate powder extract, pour out and filter the chocolate powder extract and keep the residue for other functions, then decompress and concentrate the chocolate powder extract to unconcentrated extract in a proportion of 1.1-1.4 to get the chocolate extract.
  • The propylene glycol or polyethylene glycol solvent and tween 80 above are all with the officinal or edible level, among which propylene glycol and polyethylene glycol can be used solely as well as in combination. Advantages and Positive Effect Compared with Public Technology
  • There are two reasons for using propylene glycol or polyethylene glycol solvent with tween 80 as the extract and directly extracting tobacco in comparatively mild conditions. First, the aroma elements of tobacco can directly enter the extract. Second, extracting tobacco in mild conditions can avoid the loss and damage of some tobacco aroma elements that are easily-volatilized or sensitive to temperature under the conditions of complex process and high-temperature concentration. In addition, comparing with other common solvent that extracts aroma elements, propylene glycol or polyethylene glycol solvent can better keep the aroma due to their high viscosity and certain moisturizing function. After used by a large number of customers, this product is commonly preferred by them because the taste is close to the cigarette and the aroma can be well kept even when the product is kept for two to three years.
  • Specific Ways of Implementation
  • Case 1: Plan to prepare 500 liters of E-cigarette liquid. Get 50 kilograms of tobacco and put into the extracting tank with interlayer; respectively get 350 liters of propylene glycol and 1 liter of tween 80, then pour the latter into the former and stir the mixture for 30 minutes. Add the mixed liquor into the extracting tank and soak the tobacco for 50 minutes. Then use steam to heat it up to 50°C through the interlayer. After extracting with heat preservation for 4 hours, pour out the extract and filter it to get the filtrate. Add 18 kilograms of chocolate extract into the filtrate and stir the mixture for 30 minutes. Then add 500 liters of propylene glycol into the filtrate to complement the planning preparation and stir the mixture for 35 minutes to get the E-cigarette liquid.
  • Case 2: Plan to prepare 500 liters of E-cigarette liquid. Get 50 kilograms of tobacco and put into the extracting tank with interlayer; get and mix 380 liters of propylene glycol and polyethylene glycol according to the proportion of 1:1, and get 1.5 liters of tween 80. Pour the tween 80 into the mixture of propylene glycol and polyethylene glycol and stir it for 40 minutes and then add it to the extracting tank and soak the tobacco for 60 minutes. Use steam to heat it up to 60°C through the interlayer. After extracting with heat preservation for 6 hours, pour out the extract and filter it to get the filtrate. Add 20 kilograms of chocolate extract into the filtrate and stir the mixture for 40 minutes. Then add 500 liters of polyethylene glycol into the filtrate and stir the mixture for 30 minutes to get the E-cigarette liquid.
  • The above embodiments of the invention as well as the appended claims show multiple characterizing features of the invention in specific combinations. The skilled person will easily be able to consider further combinations or sub-combinations of these features in order to adapt the invention as defined in the claims to his specific needs

Claims (3)

  1. Method for preparing E-cigarette liquid, characterized in that: the method comprises the steps of:
    getting tobacco in an amount of 5-20% weight/volume (w/v) of the E-cigarette liquid and putting the tobacco into an extracting tank;
    adding a mixed solvent into the extracting tank and soaking the tobacco for 30-100 minutes, wherein the method for preparing the mixed solvent is to respectively get the propylene glycol and/or polyethylene glycol in an amount of 30-80% w/v of the E-cigarette liquid and 0.1-0.5% w/v of tween 80, and then stirring them for 20-40 minutes;
    heating the tobacco up to 40-60°C and extracting the tobacco with warm soak for 2-8 hours to obtain an extract;
    filtering the extract to obtain a filtrate;
    adding chocolate extract in an amount of 1-10% w/v of the E-cigarette liquid into the filtrate to obtain a mixture and then stirring the mixture for 20-40 minutes;
    after that, complementing the E-cigarette liquid to 100% of a volume of the E-cigarette liquid as planned to be prepared by adding in propylene glycol or polyethylene glycol to obtain a second mixture and then stirring the second mixture until the second mixture is uniform, obtaining therefore the E-cigarette liquid.
  2. Method for preparing E-cigarette liquid according to claim 1, characterized in that the chocolate extract is prepared by the following steps:
    smashing chocolate to 20-60 sections to obtain chocolate powder and putting the chocolate powder into an extracting tank with interlayer;
    adding distilled water in a weight 3-10 times of the chocolate powder;
    soaking the chocolate powder for 30-90 minutes and heating the chocolate powder up to 80-90°C;
    extracting the chocolate powder with heat preservation for 2-6 hours to obtain a chocolate powder extract;
    pouring out and filtering the chocolate powder extract, then decompressing and concentrating the chocolate powder extract in a proportion of 1.1-1.4 in relation to unconcentrated extract to get the chocolate extract.
  3. Method for preparing E-cigarette liquid according to claim 1, characterized in that the propylene glycol and polyethylene glycol are used solely or are used in combination.
EP12155467.9A 2011-07-04 2012-02-14 Preparation method of E-cigarette liquid Not-in-force EP2543265B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011101840686A CN102349699B (en) 2011-07-04 2011-07-04 Preparation method for electronic cigarette liquid

Publications (3)

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EP2543265A2 EP2543265A2 (en) 2013-01-09
EP2543265A3 EP2543265A3 (en) 2014-12-10
EP2543265B1 true EP2543265B1 (en) 2017-09-13

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US (1) US20130008457A1 (en)
EP (1) EP2543265B1 (en)
JP (1) JP5752008B2 (en)
CN (1) CN102349699B (en)
CA (1) CA2766749A1 (en)
RU (1) RU2542547C2 (en)
TW (1) TW201302106A (en)
WO (1) WO2013004160A1 (en)

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JP2013013394A (en) 2013-01-24
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RU2542547C2 (en) 2015-02-20
WO2013004160A1 (en) 2013-01-10
TW201302106A (en) 2013-01-16
CA2766749A1 (en) 2013-01-04
CN102349699A (en) 2012-02-15
EP2543265A2 (en) 2013-01-09
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CN102349699B (en) 2013-07-03
TWI477237B (en) 2015-03-21

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