EP0383018B1 - Verfahren zum Imprägnieren von Fasern eines Tabakrauchfilters mit Polycarbonsäuren bzw. sauren Salzen derselben - Google Patents

Verfahren zum Imprägnieren von Fasern eines Tabakrauchfilters mit Polycarbonsäuren bzw. sauren Salzen derselben Download PDF

Info

Publication number
EP0383018B1
EP0383018B1 EP90100642A EP90100642A EP0383018B1 EP 0383018 B1 EP0383018 B1 EP 0383018B1 EP 90100642 A EP90100642 A EP 90100642A EP 90100642 A EP90100642 A EP 90100642A EP 0383018 B1 EP0383018 B1 EP 0383018B1
Authority
EP
European Patent Office
Prior art keywords
polycarboxylic acids
acid
salts
acid salts
weight
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
EP90100642A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0383018A2 (de
EP0383018A3 (en
Inventor
Gerald Dipl.-Ing. Schmekel
Paul-Georg Dipl.-Chem. Henning
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 Germany GmbH
Original Assignee
British American Tobacco Germany GmbH
BAT Cigarettenfabriken GmbH
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 Germany GmbH, BAT Cigarettenfabriken GmbH filed Critical British American Tobacco Germany GmbH
Priority to AT90100642T priority Critical patent/ATE99505T1/de
Publication of EP0383018A2 publication Critical patent/EP0383018A2/de
Publication of EP0383018A3 publication Critical patent/EP0383018A3/de
Application granted granted Critical
Publication of EP0383018B1 publication Critical patent/EP0383018B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A24D3/14—Use of materials for tobacco smoke filters of organic materials as additive

Definitions

  • This object is achieved by a method of the type mentioned, in which the environmental and Processing temperatures of crystalline polycarboxylic acids or acidic salts thereof in the form of fine solid particles with a number average particle sizes of less than 50 ⁇ m are suspended in an organic, liquid medium and the suspension obtained is applied to the fibers.
  • Processing temperatures are to be understood here as those temperatures at which the hardeners are usually applied to the fiber material in the cigarette industry, in particular in the temperature range from about 20 to 60 ° C. Higher processing temperatures up to around 100 ° C can improve the stability of the suspension against segregation. How the polycarboxylic acids or acid salts thereof are brought to the specified particle size is not critical; the simplest measure for maintaining the particle size is a grinding process, followed by a sieving process.
  • polycarboxylic acids or acid salts thereof are used with pK a values in the range of 1 to 5, wherein it is preferred polycarboxylic acids or acid salts thereof are used with from 2 to 6 carbon atoms, and (in addition) from 2 to 3 carboxyl groups.
  • polycarboxylic acids are to be used in the form of their acidic salts, preference is given to using acidic alkali, in particular acidic potassium and ammonium salts; however, it is also possible to use sodium, rubidium and cesium salts.
  • polycarboxylic acids or acidic salts thereof are selected from a group formed by maleic acid, succinic acid, glutaric acid, tartaric acid, malic acid, citric acid and acetylcitric acid; polycarboxylic acids, which are natural tobacco ingredients, including acid salts thereof, are particularly preferred.
  • Polycarboxylic acids of the aforementioned specification which additionally have an OH substituent, which does not belong to a carboxyl group or has more than one, in particular citric, tartaric and malic acid.
  • the polycarboxylic acids or the acid salts thereof are used in an amount of 0.1 to 10, in particular 0.5 to 5% by weight, based on the weight of the filter fiber, suspended in the medium.
  • the organic liquid medium used is carboxylic acid ester from the group consisting of polyethylene glycol acetate, polyethylene glycol propionate, in particular triethylene glycol diacetate, glycerol diacetate, glycerol triacetate, glycerol tripropionate, di- (methoxyethyl) phthalate, ethylphthaloyl methyl glycolate and triethyl group; Glycerol triacetate (triacetin) is particularly preferred.
  • the dispersing agents are preferably used in an amount of 0.1 to 5, in particular 0.5 to 2,% by weight, based on the polycarboxylic acids or acid salts thereof.
  • the method of the invention is particularly suitable for impregnating filter material based on cellulose acetate.
  • citric acid, maleic acid, malic acid and tartaric acid were first ground.
  • a sieve fraction with an average particle size of less than 10 ⁇ m was collected from citric acid, maleic acid and tartaric acid; the average particle size of the ground malic acid was less than 5 ⁇ m.
  • About 1% by weight of pyrogenic silicon dioxide with an average particle size of 7 ⁇ m was added to part of the samples before grinding.
  • the dispersions obtained with the addition of pyrogenic silicon dioxide showed no tendency to sedimentation and were stable for weeks.
  • the dispersions without the addition of silicon dioxide had to be homogenized by stirring every hour to avoid concentration gradients.
  • the smoking results show that the filter materials equipped according to the invention have a nicotine retention increased by 0.1 mg.
  • the selective filtration effect was not influenced by the optionally added pyrogenic silicon dioxide.
  • Dispersions of the composition according to Table 4 were sprayed onto a filter material with the specifications given in Table 1.
  • Table 4 Filter rod Dispersion in triacetin Composition 1 ) Order quantity 2 ) 5 9.1% by weight of malic acid + SiO2 11% by weight 6 9.1% by weight tartaric acid + SiO2 11% by weight 7 100% triacetin (comparison) 10% by weight 1) Dispersed material, based on the total weight of the dispersion 2) Dispersion, based on the weight of the fiber material

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Filtering Materials (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
EP90100642A 1989-02-13 1990-01-12 Verfahren zum Imprägnieren von Fasern eines Tabakrauchfilters mit Polycarbonsäuren bzw. sauren Salzen derselben Expired - Lifetime EP0383018B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90100642T ATE99505T1 (de) 1989-02-13 1990-01-12 Verfahren zum impraegnieren von fasern eines tabakrauchfilters mit polycarbonsaeuren bzw. sauren salzen derselben.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3904239 1989-02-13
DE3904239A DE3904239C1 (cs) 1989-02-13 1989-02-13

Publications (3)

Publication Number Publication Date
EP0383018A2 EP0383018A2 (de) 1990-08-22
EP0383018A3 EP0383018A3 (en) 1990-11-07
EP0383018B1 true EP0383018B1 (de) 1994-01-05

Family

ID=6373960

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90100642A Expired - Lifetime EP0383018B1 (de) 1989-02-13 1990-01-12 Verfahren zum Imprägnieren von Fasern eines Tabakrauchfilters mit Polycarbonsäuren bzw. sauren Salzen derselben

Country Status (3)

Country Link
EP (1) EP0383018B1 (cs)
AT (1) ATE99505T1 (cs)
DE (2) DE3904239C1 (cs)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5105834A (en) * 1989-12-18 1992-04-21 R.J. Reynolds Tobacco Company Cigarette and cigarette filter element therefor
US5076294A (en) * 1990-03-29 1991-12-31 R. J. Reynolds Tobacco Company Filter cigarette
US5246017A (en) * 1990-11-06 1993-09-21 R. J. Reynolds Tobacco Company Cigarette and cigarette filter element therefor
DE19748072A1 (de) 1997-10-30 1999-05-12 Bat Cigarettenfab Gmbh Verfahren und Vorrichtung zum Aufbringen von Substanzen auf ein Filtermaterial
RU2161427C1 (ru) * 1999-09-17 2001-01-10 Петрик Виктор Иванович Материал фильтра для сигарет
DE10000519C5 (de) * 2000-01-08 2004-12-02 Reemtsma Cigarettenfabriken Gmbh Verfahren zur Herstellung eines sauer gestellten Filters für Tabakprodukte, sowie deren Verwendung
WO2015022201A1 (en) * 2013-08-12 2015-02-19 Solvay Acetow Gmbh Process for manufacturing a product containing a catalytically active titanium compound

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1291061A (fr) * 1961-03-10 1962-04-20 Produits filtrants pour la fumée de tabac et autres gaz et cartouches perfectionnées pouvant recevoir ces produits et permettant d'en accentuer l'effet filtrant
DE1692895A1 (de) * 1966-08-31 1972-05-18 Brinkmann Ag M Saeure enthaltender Tabakrauchfilterkoerper aus Celluloseacetat und Verfahren zu seiner Herstellung
US3410282A (en) * 1967-03-13 1968-11-12 Eastman Kodak Co Filter medium for removing hydrogen cyanide from tobacco smoke
GB1208491A (en) * 1968-01-02 1970-10-14 Gallaher Ltd Improvements in tobacco filters

Also Published As

Publication number Publication date
EP0383018A2 (de) 1990-08-22
DE59004063D1 (de) 1994-02-17
EP0383018A3 (en) 1990-11-07
ATE99505T1 (de) 1994-01-15
DE3904239C1 (cs) 1990-05-17

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