US3327715A - Tobacco smoke filter - Google Patents

Tobacco smoke filter Download PDF

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Publication number
US3327715A
US3327715A US401025A US40102564A US3327715A US 3327715 A US3327715 A US 3327715A US 401025 A US401025 A US 401025A US 40102564 A US40102564 A US 40102564A US 3327715 A US3327715 A US 3327715A
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US
United States
Prior art keywords
filter
insoluble
tobacco
methyl
cigarette
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.)
Expired - Lifetime
Application number
US401025A
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English (en)
Inventor
Julian L Azorlosa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GAF Chemicals Corp
Original Assignee
General Aniline and Film Corp
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 General Aniline and Film Corp filed Critical General Aniline and Film Corp
Priority to US401025A priority Critical patent/US3327715A/en
Priority to GB41058/65A priority patent/GB1110970A/en
Priority to DEG33145U priority patent/DE1928949U/de
Priority to DE19651517284 priority patent/DE1517284A1/de
Application granted granted Critical
Publication of US3327715A publication Critical patent/US3327715A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent

Definitions

  • the present invention relates, in general, to minimizing certain undesirable effects obtained from the combustion of tobacco and, in particular, to improved tobacco products.
  • filter cigarette is generally applied to those products which have at one end thereof a filtering material containing an adsorbent capable of adsorbing tars and irritants, through which the smoke is passed prior to inhalation by the smoker thereof.
  • the filter should not substantially interfere with the pleasurable act of smoking from the standpoint of flavor and, physically, should not deter the passage of air through the filter while simultaneously removing tars and irritants from tobacco smoke.
  • Another object of this invention resides in the provision of an improved filtering medium for filter cigarettes which is capable of adsorbing tars and irritants yet does not interfere with the passage of air through the filter or substantially detract from the flavor of the smoke to the user thereof.
  • insoluble polymers of N- vinyl-alpha-pyrrolidones and insoluble polyvinyl pyrrolidone are intended to include products which are insolu ble in water, strong mineral acids, caustic solutions and common organic solvents, and to distinguish such products from the soluble polymeric materials based on N- vinyl-alpha-pyrrolidone known in the art as represented by US. Patents Nos. 2,265,450, and 2,335,454.
  • Such insoluble polymers of the type referred to above can be produced in accordance with the teachings of F. Grosser, as set forth in US. Patent 2,938,017, patented May 24, 1960.
  • the insoluble polymers of vinyl lactams are preferably employed in the form of a filter element for removing the tars and gums from tobacco smoke in cigarettes, pipes or cigars.
  • FIGURES 1 and 2 illustrate filter-tip cigarettes; while FIGURE 3 illustrates a holder for cigarettes or cigar; and FIGURE 4 illustrates a pipe.
  • a cigarette designated as 1 may be provided with a cylindrical filter element comprising a cylindrical wall, 2, filled with granules of insoluble polyvinyl pyrrolidone 3; and held in place by cotton or other fibrous packing 4.
  • FIGURE 2 Another form of cigarette is illustrated in FIGURE 2 wherein 11 designates a cigarette; while 12 designates the cylindrical wall of a filter element filled with a mixture of fibers 13 of cotton, cellulose acetate or other fibrous material and granules of insoluble polyvinyl pyrrolidone 14.
  • a cigarette or cigar 21 may be held in metal or plastic hollow holder 22, in the central opening of which there is placed a tube of paper, plastic, metal foil or the like 23 which is filled with granules 24 of insoluble polyvinyl pyrrolidone retained therein by plugs 25 of cotton or other suitable fibrous material.
  • Such disposable filters can also be employed in pipes by providing an enlarged chamber in the end of the pipe stem 31 as illustrated in FIGURE 4, in which there is placed a removable cylindrical element 32 of paper, metal foil, plastic or the like which is filled with granules 33 of insoluble polyvinyl pyrrolidone held in place therein by plugs 35 of suitable fibrous material.
  • insoluble polymers N-vinyl-alpha-pyrrolidone
  • insoluble polymers of other N-vinyl lactams can be used to obtain similar results.
  • R and R represent hydrogen, alkyl or aryl and n and n represent an integer from 0 to 5 inclusive but only one of the n and n values may be 0.
  • Y represents O *S 2 2-pyrrolidone, 4-acryl-2-pyrrolidone, -ethyl-2-pyrrolidone, 3-methyl-2-pyrrolidone, 4-methyl-2-pyr-rolidone, 5- methyl-Z-pyrrolidone, 3,3,5-trimethyl-2-pyrrolidone; 2- pi-peridone, 5,5-diethyl-2-piperidone, 5,6-di-methyl-2-pi-peridone, 4-ethyl-2-piperidone, 6-ethyl-2-piperid-one, 6-ethyl- B-methyI-Z-piperidone, 3-methyl-2-piperidone, 4-methyl-2- piperidone, S-methyl-Z-piperidone, 6-methyl-2-piperidone; 2-caprolactam, 3,6-dimethyl-2
  • the aforesaid insoluble polymers of the above-men tioned N-vinyl lactams can be readily prepared by heating the same at elevated temperatures in the presence of a catalyst such as alkali metals, alkaline earth metals as well as the oxides, hydroxides and alkoxides of these metals.
  • a catalyst such as alkali metals, alkaline earth metals as well as the oxides, hydroxides and alkoxides of these metals.
  • Another group of catalysts which have been found effective in producing insoluble polymers of N-vinyl lactarns include the hydrides and borohydrides of the alkali metals.
  • Representative alkali metal hydrides and borohydrides which have been tested and found efiective include sodium borohydride, potassium borohydride and sodium hydride.
  • Other alkali metal hydrides and borohydrides which can also be employed include lithium hydride, lithium borohydride, cesium hydride, cesium borohydride, rubidium hydride and rubidium borohydride. If desired, mixtures of alkali metal hydrides and/or alkali metal borohydrides can be employed as catalysts for the polymerization.
  • Example 1 A one and one-half inch length of ten millimeter diameter glass tubing was loosely packed to a height of one-half inch with powdered cellulose acetate, a conventional cigarette filter material. Small adsorbent cotton plugs were used to retain the material in the tube. A Phillip Morris cigarette was then smoked as completely as possible through the filter. The filter material, i.e. cellulose acetate, was then removed and dissolved in a 1:4 combination of ethanol and ethylene dichloride. The res-ulting solution was then measured for light absorption at 400 millimicrons on a Hardy Spectrophotometer. The absorption readings are indicative of the test materials efiiciency for trapping tars and other irritants in the tobacco smoke. The free drawing properties of the filter for the life of the cigarette were also noted.
  • Example 2 The same procedure as set forth in Example 1 was em ployed except that a water soluble polyvinyl pyrrolidone, having a Fi'kentscher K value of 30, of -200 mesh, was employed to prepare the filter.
  • Example 3 The same procedure as set forth in Example 1 was employed except that a 50:50 mixture of the filter materials of Examples 1 and 2 was employed to prepare the filter.
  • Example 4 The same procedure as set forth in Example 1 was employed except that an insoluble polyvinyl pyrrolidone of 100-200 mesh produced as described in Example 1 of U.S. Patent 2,938,017 was employed to prepare the filter.
  • Example 6 In a manner similar to that described in Example 5, equal parts by weight of cigarette tobacco and powdered 100-200 mesh) insoluble polyvinylpyrrolidone, produced in the manner described in Example 1 of U.S. Patent 2,938,017, were mixed and made-up into filter plugs which were attached to non-filter cigarettes by an outer wrapping of pressure sensitive adhesive tape. Similar plugs were also made-up of the same cigarette tobacco and attached to cigarettes from the same batch. Both types of cigarettes were smoked and it was noted that the smoke from the cigarettes in which the filter contained insoluble polyvinylpyrrolidone Was much milder than that from the other cigarettes.
  • the amount of insoluble polyvinyl pyrrolidone employed to effect the desired decrease in irritational properties of the tobacco or the smoke therefrom should be a minimum amount because of the relatively high cost of insoluble polyvinyl pyrrolidone. Such amount may vary with various types of tobacco and With the method in which the insoluble polyvinyl pyrrolidone is incorporated in the tobacco. The optimum amount can, however, be determined by preliminary tests.
  • a cigarette comprising a tobacco element and a filter element comprising an insoluble polymeric N-vinyl lactam.
  • a cigarette comprising a tobacco element and a filter element comprising an insoluble polymeric N-vinyl pyrrolidone.
  • a cigar comprising a tobacco element and a filter element comprising an insoluble polymeric N-vinyl lactam.
  • a cigar comprising a tobacco element and a filter element comprising an insoluble polymeric N-Vinyl pyrrolidone.
  • a smoke-filter for tobacco smoke comprising a holder for the article producing said smoke, said holder containing an insoluble polymeric N-vinyl lactam.
  • a smoke-filter for tobacco smoke comprising a holder for the article producing said smoke, said holder containing an insoluble polymeric N-vinyl pyrrolidone.
  • a filter element for use in smoking devices comprising an insoluble polymeric N-vinyl lactam.
  • a filter element for use in smoking devices comprising an insoluble polymeric N-vinyl pyrrolidone.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Pyrrole Compounds (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
US401025A 1964-10-02 1964-10-02 Tobacco smoke filter Expired - Lifetime US3327715A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US401025A US3327715A (en) 1964-10-02 1964-10-02 Tobacco smoke filter
GB41058/65A GB1110970A (en) 1964-10-02 1965-09-27 Improvements in or relating to smoke filters
DEG33145U DE1928949U (de) 1964-10-02 1965-09-28 Tabakrauch-filter.
DE19651517284 DE1517284A1 (de) 1964-10-02 1965-09-28 Tabakrauch-Filter-Material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US401025A US3327715A (en) 1964-10-02 1964-10-02 Tobacco smoke filter

Publications (1)

Publication Number Publication Date
US3327715A true US3327715A (en) 1967-06-27

Family

ID=23585961

Family Applications (1)

Application Number Title Priority Date Filing Date
US401025A Expired - Lifetime US3327715A (en) 1964-10-02 1964-10-02 Tobacco smoke filter

Country Status (3)

Country Link
US (1) US3327715A (de)
DE (2) DE1517284A1 (de)
GB (1) GB1110970A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3502084A (en) * 1967-08-24 1970-03-24 H 2 O Filter Corp The Filter element for smoking devices
US3623490A (en) * 1969-12-15 1971-11-30 Brown & Williamson Tobacco Tobacco-smoke filters
US4034768A (en) * 1975-05-14 1977-07-12 Joyce Patrick J Non fibrous cigarette filter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2770241A (en) * 1954-05-10 1956-11-13 American Collo Corp Tobacco smoke filter and method
US2792006A (en) * 1954-10-08 1957-05-14 Anders Jordahl Filters and filter material for use in filtering tobacco smoke
US3217719A (en) * 1962-04-16 1965-11-16 Lorillard Co P Cigarette filters containing selective adsorbents

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2770241A (en) * 1954-05-10 1956-11-13 American Collo Corp Tobacco smoke filter and method
US2792006A (en) * 1954-10-08 1957-05-14 Anders Jordahl Filters and filter material for use in filtering tobacco smoke
US3217719A (en) * 1962-04-16 1965-11-16 Lorillard Co P Cigarette filters containing selective adsorbents

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3502084A (en) * 1967-08-24 1970-03-24 H 2 O Filter Corp The Filter element for smoking devices
US3623490A (en) * 1969-12-15 1971-11-30 Brown & Williamson Tobacco Tobacco-smoke filters
US4034768A (en) * 1975-05-14 1977-07-12 Joyce Patrick J Non fibrous cigarette filter

Also Published As

Publication number Publication date
DE1517284A1 (de) 1969-09-11
GB1110970A (en) 1968-04-24
DE1928949U (de) 1965-12-09

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