US3380458A - Method for producing a cigarette with low tar yield - Google Patents

Method for producing a cigarette with low tar yield Download PDF

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Publication number
US3380458A
US3380458A US527457A US52745766A US3380458A US 3380458 A US3380458 A US 3380458A US 527457 A US527457 A US 527457A US 52745766 A US52745766 A US 52745766A US 3380458 A US3380458 A US 3380458A
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Prior art keywords
tobacco
percent
cigarette
tar
salt
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Expired - Lifetime
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US527457A
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English (en)
Inventor
George P Touey
Ii Robert C Mumpower
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Eastman Kodak Co
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Eastman Kodak Co
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Priority to US527457A priority Critical patent/US3380458A/en
Priority to BE694021D priority patent/BE694021A/xx
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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18—Treatment of tobacco products or tobacco substitutes
    • A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
    • A24B15/287—Treatment of tobacco products or tobacco substitutes by chemical substances by inorganic substances only
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18—Treatment of tobacco products or tobacco substitutes
    • A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances

Definitions

  • This invention relates to additives for smoking tobacco, and to smoking devices such as, for example, cigarettes made with tobacco containing such additives. More particularly, this invention concerns a new technique for substantially lowering the amount of tarv produced by a cigarette during smoking.
  • Cigarette tobacco is known to contain small amounts of nitrate salts. For example, it has recently been reported (Tobacco Science, IX, pp. 149-157, December 1965) that cigarette tobacco used in making cigarettes may contain as much as 0.58% nitrate nitrogen. However, this amount is too small to effect any substantial reduction in the amount of tar delivered by the cigarette as will be illustrated by the subsequent examples of this invention. Calculated in terms of the salt concentration this amount (0.58% N) represents only 3.5% NaNO or 4.2% KNO based on the dry weight salt-containing tobacco. The usual nitrogen content of a blended tobacco for cigarettes is less than 0.2%. As NaNO this would be less than 1.3% and as KNO it would be less than.1.4%.
  • French Patent 1,180,320 teaches that when certain oxygen releasing substances are added to smoking products they reduce the amounts of polycyclic aromatic hydrocarbons formed in the smoke;
  • This patent mentions the addition of a salt of an oxygenated acid of nitrogen to cigarette paper or tobacco, but the examples illustrate the addition of nitrite salts to the paper.
  • the amounts actually added to the product are not mentioned.
  • US. Patent 3,121,433 discloses the addition of potassium nitrate to reconstituted tobacco sheet to improve its burn characteristics. However, the amount in the sheet is only 3%. Bently and Burgan (The Analyst, 85, 727-30, 1960) describe adding several compounds to tobacco to cause a reduction in the amount of 3,4-benzopyrene formed in the smoke. They obtained positive results when up to of copper nitrate or up to 4% of potassium nitrate was added to the tobacco and negative results with other nitrate salts.
  • an object of this invention is to disclose a chemical additive for natural leaf smoking materials which will substantially reduce the total particulate matter (tar) normally produced when the material is burned.
  • Another object of this invention is to disclose a tobacco mixture containing a chemical additive for reducing the smoke condensate or tar produced when the tobacco is smoked.
  • Still another object of this invention is to disclose a nontoxic chemical additive for tobacco which will alter the burning characteristics of the tobacco in a manner "Ice that will decrease the amounts of smoke condensate or tar in the smoke.
  • Yet still another object of this invention is to disclose a cigarette which produces a reduced amount of smoke condensate or tar products in the tobacco smoke when smoked.
  • a further object of this invention is to disclose a method of treating a natural leaf smoking material for reducing the smoke condensate or tar products contained in the smoke that is produced when the material is smoked.
  • Yet still another object of this invention is to disclose a method of treating shredded tobacco with a chemical additive for decreasing the amount of smoke condensate or tar produced when the tobacco is smoked.
  • a still further object of this invention is to disclose a process for producing a cigarette which when smoked contains a reduced amount of tar in the tobacco smoke.
  • Another object is to disclose the use of sodium and/ or potassium nitrate, at certain minimum concentrations, as additives to tobacco for accomplishing the lowering of the amount of tar produced by a cigarette.
  • FIGURE 1 illustrates the nitric acid salt treated smoking tobacco of this invention formed into a cigarette product
  • FIGURE 2 is a graph illustrating the relationship between the percentage of nitric acid salt added to a smoking tobacco and the reduction in the smoke condensate or tar products produced when the tobacco is smoked.
  • nitrate salt additives contemplated by this invention can be incorporated into the tobacco or other natural leaf smoking material in any desirable manner.
  • solutions of the sodium or potassium nitrate salt additives in a suitable solvent, such as water may be applied to the tobacco as by spraying, soaking, sprinkling or the like after which the solvent is driven off as a vapor leaving thead-ditive thoroughly incorporated with the tobacco.
  • the nitrate sait additives may aiso be applied as a finely-divided solid material through a dusting, shaking or dispersing medium of any suitable type which will uniformly disperse the additive over the tobacco.
  • the incorporation of the additive may take place at any time prior to the final packaging of the tobacco product. In the case of cigarette tobacco it may be incorporated before or after blending of the various tobaccos if, in fact, blended tobacco is employed, and the additive may be applied to one or all of the blend constituents.
  • the amount of additive in the final product contemplated by this invention is rather small, but the specific amounts employed is quite critical. Generally speaking, however, the desirable and totally unexpected substantial reduction of smoke solids or tar products can be obtained if the nitrate salt additive is incorporated into the final tobacco product in amounts of more than 5 percent to as high as 9 percent by weight (dry basis). However optimum reduction in the smoke solids or tar products in the tobacco smoke is obtained when about 6 to 9 percent of nitrate salt additive is used.
  • EXAMPLES The tobacco was removed from 2,000 domestic cigarettes and was divided into 10 equal portions. One portion was treated with a very fine spray of water until the weight ratio of water to tobacco was 1.5:1. The wet sample was then spread out and dried in air to a uniform moisture content of 12 percent. Cigarettes 85 mm. in length and containing 1.1 gram of the tobacco were prepared and tested for pressure drop (resistance to draw). Only those having a pressure drop within a range of 3.0-3.3 inches of water were used in the smoking tests. They represented control cigarettes. This technique for determining the pressure drop of a cigarette has been described by Touey (Analytical Chemistry, 27, 1788-90 (1955) The nitrate nitrogen content of the control tobacco was 0.1 percent.
  • Cigarettes from these various groups were automatically smoked on a smoking machine described by Mum- 0 power and Touey [Tobacco Science, 5, 31-35 (1961)]. Using a 35-ml. puff of 2-sec. duration at the rate of 1 pur'f/ minute, the machine smoked 5 cigarettes from each group to a butt length of 30 mm. The particulate phase of the smoke (tars) in each case was collected on a tarred Cambridge absolute filter situated directly in back of the cigarette. Then the filter was reweighed to obtain the wet weight of the tar collected. The tar on the filter was analyzed for moisture content so that a moisture free tar delivery value for each group of cigarettes smoked could be obtained. A new Cambridge filter assembly was used for each group of cigarettes tested.
  • a smoking product consisting essentially of natural tobacco leaf material
  • the improvement which comprises adding thereto 5.5 to 10 percent by weight of a nitric acid salt selected from the group consisting of the nitric acid salt of sodium, nitric acid salt of potassium, or mixtures thereof, said salt being intermixed with said leaf material for reducing at least partially the smoke condensate products produced when the leaf material is smoked.
  • a natural tobacco leaf smoking material containing between 5.5 and 10 percent by weight of a nitric acid salt, said salt being selected from the group consisting of nitric acid-salt of sodium, nitric acid salt of potassium, or mixtures thereof.
  • nitric acid salt selected from the group consisting of nitric acid salt of sodium, nitric acid salt of potassium, or mixtures thereof.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture Of Tobacco Products (AREA)
US527457A 1966-02-15 1966-02-15 Method for producing a cigarette with low tar yield Expired - Lifetime US3380458A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US527457A US3380458A (en) 1966-02-15 1966-02-15 Method for producing a cigarette with low tar yield
BE694021D BE694021A (xx) 1966-02-15 1967-02-13

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US527457A US3380458A (en) 1966-02-15 1966-02-15 Method for producing a cigarette with low tar yield

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3473535A (en) * 1968-10-07 1969-10-21 Eldon E Stahly Treatment of tobacco smoke to reduce metal carbonyl content thereof
US3577997A (en) * 1969-03-20 1971-05-11 American Chemosol Corp Tobacco treatment with citric acid and deuterium oxide
US3656489A (en) * 1969-08-26 1972-04-18 Eldon Stahly Method of treating tobacco smoke to eliminate metal carbonyl content thereof
US3893464A (en) * 1973-12-19 1975-07-08 Liggett & Myers Inc Tobacco composition
US4020850A (en) * 1973-12-12 1977-05-03 Brown & Williamson Tobacco Corporation Thermoplastic cigarette wrapper
EP0972456A1 (en) * 1997-09-22 2000-01-19 Ohshiro Co., Ltd. Regulator for smoking flavor of tobacco
US6153119A (en) * 1997-05-09 2000-11-28 Sung; Michael Method and product for reducing tar and nicotine in cigarettes
US6789548B2 (en) 2000-11-10 2004-09-14 Vector Tobacco Ltd. Method of making a smoking composition
US20050000529A1 (en) * 2001-12-19 2005-01-06 Bereman Robert D. Method and compositions for imparting cooling effect to tobacco products
US20050000531A1 (en) * 2001-11-09 2005-01-06 Xuling Shi Method and composition for mentholation of charcoal filtered cigarettes
US20050000528A1 (en) * 2001-12-19 2005-01-06 Bereman Robert D. Method and composition for mentholation of cigarettes

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE42394C (de) * N. WALLACH in Duisburg Verfahren, Tabak zu veredeln
US2007407A (en) * 1932-03-22 1935-07-09 Samuel S Sadtler Prepared smoking tobacco
US2029494A (en) * 1933-02-13 1936-02-04 Fed Tobacco Corp Treatment of tobacco
US2131160A (en) * 1935-03-30 1938-09-27 Souren Z Avedikian Tobacco and method of treating tobacco
CA449206A (en) * 1948-06-22 Piscitelli Dominique Process for improving tobacco
US3003895A (en) * 1957-12-06 1961-10-10 Heinr Borgwaldt Tobacco product and method of making the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE42394C (de) * N. WALLACH in Duisburg Verfahren, Tabak zu veredeln
CA449206A (en) * 1948-06-22 Piscitelli Dominique Process for improving tobacco
US2007407A (en) * 1932-03-22 1935-07-09 Samuel S Sadtler Prepared smoking tobacco
US2029494A (en) * 1933-02-13 1936-02-04 Fed Tobacco Corp Treatment of tobacco
US2131160A (en) * 1935-03-30 1938-09-27 Souren Z Avedikian Tobacco and method of treating tobacco
US3003895A (en) * 1957-12-06 1961-10-10 Heinr Borgwaldt Tobacco product and method of making the same

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3473535A (en) * 1968-10-07 1969-10-21 Eldon E Stahly Treatment of tobacco smoke to reduce metal carbonyl content thereof
US3577997A (en) * 1969-03-20 1971-05-11 American Chemosol Corp Tobacco treatment with citric acid and deuterium oxide
US3656489A (en) * 1969-08-26 1972-04-18 Eldon Stahly Method of treating tobacco smoke to eliminate metal carbonyl content thereof
US4020850A (en) * 1973-12-12 1977-05-03 Brown & Williamson Tobacco Corporation Thermoplastic cigarette wrapper
US3893464A (en) * 1973-12-19 1975-07-08 Liggett & Myers Inc Tobacco composition
US6153119A (en) * 1997-05-09 2000-11-28 Sung; Michael Method and product for reducing tar and nicotine in cigarettes
EP0972456A1 (en) * 1997-09-22 2000-01-19 Ohshiro Co., Ltd. Regulator for smoking flavor of tobacco
EP0972456A4 (en) * 1997-09-22 2001-04-04 Ohshiro Co Ltd TOBACCO SMOKE FLAVOR REGULATOR
US6789548B2 (en) 2000-11-10 2004-09-14 Vector Tobacco Ltd. Method of making a smoking composition
US20050000532A1 (en) * 2000-11-10 2005-01-06 Bereman Robert D. Method of making a smoking composition
US6959712B2 (en) 2000-11-10 2005-11-01 Vector Tobacco Ltd. Method of making a smoking composition
US20060037621A1 (en) * 2000-11-10 2006-02-23 Bereman Robert D Method of making a smoking composition
US20050000531A1 (en) * 2001-11-09 2005-01-06 Xuling Shi Method and composition for mentholation of charcoal filtered cigarettes
US20050000529A1 (en) * 2001-12-19 2005-01-06 Bereman Robert D. Method and compositions for imparting cooling effect to tobacco products
US20050000528A1 (en) * 2001-12-19 2005-01-06 Bereman Robert D. Method and composition for mentholation of cigarettes

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Publication number Publication date
BE694021A (xx) 1967-07-17

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