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GB2020955A - Improvements relating to tobacco- smoke filters - Google Patents

Improvements relating to tobacco- smoke filters

Info

Publication number
GB2020955A
GB2020955A GB7916007A GB7916007A GB2020955A GB 2020955 A GB2020955 A GB 2020955A GB 7916007 A GB7916007 A GB 7916007A GB 7916007 A GB7916007 A GB 7916007A GB 2020955 A GB2020955 A GB 2020955A
Authority
GB
United Kingdom
Prior art keywords
component
tobacco
dispersed
porous
fibrous
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.)
Granted
Application number
GB7916007A
Other versions
GB2020955B (en
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.)
British American Tobacco Investments Ltd IFI
Original Assignee
British American Tobacco Co Ltd
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 British American Tobacco Co Ltd filed Critical British American Tobacco Co Ltd
Priority to GB7916007A priority Critical patent/GB2020955B/en
Publication of GB2020955A publication Critical patent/GB2020955A/en
Application granted granted Critical
Publication of GB2020955B publication Critical patent/GB2020955B/en
Expired legal-status Critical Current

Links

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
    • A24D3/16—Use of materials for tobacco smoke filters of inorganic materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

A tobacco-smoke filter comprises in admixture or close dispersion a first component which is a ready but weak or weakly retentive adsorbent for vapour-phase constituents, including aldehydes, of tobacco smoke, and a second component comprising amino groups, of which at least 30% are preferably primary groups, and being capable of chemically combining with said constituents to give substantially non-volatile reaction products. Suitably the first component may comprise a porous mineral earth, such as magnesium silicate or silica gel in porous granular form. The second component may comprise an ion-exchange resin or polyethylene imine. The second component may be carried upon a porous particulate material or carried or grafted upon a fibrous material or dispersed in a fibrous material carrying the second material in a dispersed condition. Alternatively, a mixture of granular first and second components may be dispersed in a fibrous or filamentary material or disposed between plugs of such material.
GB7916007A 1978-05-16 1979-05-09 Tobacco-smoke filters Expired GB2020955B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7916007A GB2020955B (en) 1978-05-16 1979-05-09 Tobacco-smoke filters

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1997778 1978-05-16
GB7916007A GB2020955B (en) 1978-05-16 1979-05-09 Tobacco-smoke filters

Publications (2)

Publication Number Publication Date
GB2020955A true GB2020955A (en) 1979-11-28
GB2020955B GB2020955B (en) 1983-01-19

Family

ID=26254342

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7916007A Expired GB2020955B (en) 1978-05-16 1979-05-09 Tobacco-smoke filters

Country Status (1)

Country Link
GB (1) GB2020955B (en)

Also Published As

Publication number Publication date
GB2020955B (en) 1983-01-19

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19970509