DE1692926A1 - Filters for tobacco smoke - Google Patents

Description

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B esa hr ei bung 1692926

au the patent application

200 East 42nd Street, Mew York, N * Y *, USA,

"Jitter IUr Tafcatoaucn ¹ * V

für Zlgarettsn - '. imd cigar holders and pilterraund stüolte for cigarettes have been and have been used for a long time sioh especially introduced in the last few years because one recognized has because they are capable of tar constituents and other than sohädlioh aniUBthinde condensable parts of tobacco smoke? to tie, In In the same way, there were already reagents and anomalies MiftiX dt * ttrfohitdtnsttn Art tint «work, u ·» ndtrt fabric · odtr ohtaisoh · Connections on the tab »krauoh au deftrnen oven · dai thereby di · dta buIt and the aroma beetlaetenden part · of the Rau oh · s suieückffhaX-Un werd *? I, his one of the well-known filters or liltermunditüoke leigt Jedooh the amount of the exhausted from the smoke Unrequited terbindun ^ itt aaf most "she isigt dft" end of the Yilter-Bunditüoks "bin * dei filters" fall a eolehe "in" ines Zifmrrenodtr 2ifär "tfe" nfpiti * t "ttren & ftt is, a brHualiGh * te" kind 7erfirlHii§ * Dii iteuoh «! F canoe eioh therefore not inform about the

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BAD ORIÖIrJAL

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Condition of the filter in the cigarette or left | the SpJ-tZo and, in particular, not about whether the filter mainly binds undesirable substances, ί ί-

The filters according to the invention for cigarette and cigar ends and especially for filter mouthpieces with ZlgaiEtten, small cigars, zlgarillon and the like are seen with good food Bodies caused by a color changefdle absorption of unwanted connections, e.g. B. of a | dehyäisehen, sour

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or basic compounds through the Filteteedfum indicate.

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In particular, the invention relates to filter mouthpieces for hurries

Cigarettes in which a window or a! Sohaa opening yor- * is seen through which the more distant

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Filter medium becomes visible. The fllterelnsälag

with an indicator that is colored "lnd" iff the filter tinwt >"ntllche Mnngt s. B." Idthydiechin orfreauren Kom-

»Oatmt ·» its * fttftki * u · * «·» iMflittf Mt * MMlIlMl ttlln dungigtmlS dme filter medium treats etin ψ. t a reagent that converts or converts the undesired compounds into harmless components, the result of this reaction being emgeieigt through a Parburoiohl * g ita filtermedluai emgeieigt.

lit what is contained in the VIlIftaundetttek

«Indettea« tu * f »fl beä * ni« lt nlt «iftt * ft« f carbonyl- «rupfen anspteoheaie» I «Äite * tor _t vie 2># i * pl« X »v * 4ec # 4 **« ftl-

, the "Aisweeenheit von A ^ M ^ riMl" "" "igt,

BATH

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and or or or a Saut? e * Bikßft * -Iii.äili: ator _i that rises to an acidic or baslsoheTf state * In addition, the filter medium that contains the indicator can be impregnated with a reaction medium that converts the Aldejiydö into non-reactive compounds Converted, for example, sodium bisulfite, or with a black base, such as sodium carbonate, which reacts with the acidic constituents and

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she mimiesteTts partially withdraws the Sifrarettenrauoh · On this

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Thus, the filter b2sw equipped according to the invention. Filter round piece c Not only able to add the condensable components to the smoke to withdraw, but it also indicates when a corresponding amount of 'undesirable compounds' within the filter medium reacted, d. H. is bound in front of them »

; For a better understanding of the invention, refer to the drawing referenced, where the figures have the following meaningί

Flg. 1 is a schematic illustration from which the manufacture a filter mouthpiece for a cigarette emerges.

Figure 2 is a perspective view of a finished one Cigarette with a filter mouthpiece according to the invention.

In the manufacture of one- or two-part filter mouthpieces for cigarettes it is common to have the filter mediura in shape from rod-shaped inserts, from a paper sleeve are included. The filter rods correspond to in i! i: \ - r length of several single filters or filter sections, both

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for example 6 such filter abs ohtit th «The rods are, · then with the help of known Vorriohtuttgen, as described, for example, in US Patents 3 16 § 953, in Öntßpreohende Cut up pieces that went into the ends of the cigarettes incorporated and held there with a paper sleeve *

As shown in Fig. 1, a filter rod 10, which can consist of a fiber mass 11, for example alpha cellulose fibers or a mixture of mineral and cellulose fibers and the like, and which carries a paper sleeve 12, is cut into lengthwise pieces, each of which has a filter insert The rod 10 shown in the drawing corresponds to 3 ^^ inserts for a double filter, but its length could also correspond to 6 or any number of inserts Chopsticks is cut * The latter sticky stick is covered with a transparent material 16, such as Oellophane or the like, which tightly encloses the filter material 17. The filter material 17 is preferably a crinkled, absorbent, crepe-like paper of the type usual for cigarette filters, which is very much is porous and thin and, if it is pressed or rolled in a mold, e has a certain porosity and absorbency. This paper is impregnated with a suitable indicator that once an undesirable component of! DabakraucheB reaches a certain concentration, changes color · How can ₌ example, the paper sticks with an indicator of being in the following examples guiding te ji Jijg% A ¹ EI ^ gAi © ** be.

ORIGINAL INSPECTED

example 1

A resolution of 0.4. g malaohite green oxalate in 500 ml water is adjusted to a pH value of 3 by adding oxalic acid. The solution is then decolorized by adding 15 g sodium sulphite and stirring (30 minutes). * The precipitate is filtered off * and discarded » then, 250 ml of propylene glycol, together wit 5 B of the! Petoanatriumsalaeo of ethylenediamine Setraessigsäure "are added * the solution is then contacted with 250 ml of water to their final" volume and the pH adjusted by addition of 9 g sodium carbonate to 7 »2 .

With the help of a spray jet that depends on a filter of 10 mm length about 53 mg is sprayed on, the solution is before or during the production of the SiIter stick on the "paper applied" The resulting filters are white or at best quite greenish * Duroh reaction with the aldehydes in the smoke the filter turns from white to light green when it bulges, causing it is indicated that aldehydes have been removed from the house,

Example 2 *.

"Instead of the malaohite green oxalate used in Example 1 Para-rosaniline acetate can be used »The result is a Light pink colored filter section which, when reacted with the aldehydes in the cigarette smoke, takes on a purple-red color.

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Example 3.. '..; ■■■ · .. ■ "■ .ν. ■■■". \ ■■; ■■ ' - \: -_'-' ■■:. '■■ ν'.

the one used in Example 2 © J & raroaaniline acetate

by Hooanilinaoetat »βο eichälif man dan gleiolio

In the dye solutions described above can also other Salae of (driphenylraethane dyes can be used, i.e. one can, for example, instead of the Oxaiatsalaea malachite green hydrochloride or use malaohite green acetate · Similar White salsje can be made from pararosaniline or hosaniline apply with the same result, *

The same applies to the use of other members of the triphenylmethane dye series raöglieh, such as methyl violet, Crystal violet, sour fuchsin and the like ·, with the rest Solution components may be modified slightly must «Depending on the type of dye used, different colors are obtained if that is present in the indicator Sodium biaulphite reacts with aldehydes and converts them into non-volatile ones Connections transferred.

Another group of compounds which are suitable as color indicators for the cigarette filters according to the invention is the group generally known as acid-base indicators. Bb are ura compounds of various chemical classes, the color of which depends on the degree of acidity or sasicity of the medium. For example, lakmus is well known.

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pink in the acidic medium, while in the alkaline medium it is a Turns blue.

It could be determined! that practically all "known Acid-Basg indicators »if they are prepared accordingly, can be used to change the color of the filter to produce * when it comes into contact with cigarette smoke * Many of these indicators are not particularly useful, however because of the dullness or inadequate intensity of their coloring or because their color change is too narrow Spectrum includes; a color change from blue to purple or from red to orange is enough B. hardly suitable for the purpose intended according to the invention »

Some members of the group of acid-base indicators, however, have brilliant colors and result in a color change that is easy to understand and which occurs in a very specific pH range or at a certain degree of acidity up to and including ease. This is how the pH range is characteristic for the compound in question and the indicators available - cover the entire range from strongly acidic (low pH) to strongly basic (high pH). The materials in question can not only individually and also com! N _f but also used in various combinations with one another as a means to achieve the desired initial or Eadfärbungen and / or as a means for effecting a Farbumsohlages in the desired pH range. The 2 cigarette

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Rauoh contains both acids and bases and no overall pH value is around 5 * If the filter provided with an indicator is in oil at a low pH value, the Rauoh inslohtlloh this filter is alkaline. On the other hand, if the indicator filter is in equilibrium at a high pH value, the cigarette smoke of this filter is acidic, “In this way you have it in your hand” depending on the choice of indicators ? to get a reaction from acidic or basic-5 yp.

The following examples serve to explain the invention and discuss the use of various indicators with high, low, and medium or neutral pH range.

Example 4

A solution of 2 g of the sodium salt of 1- (2,4-IiiTiitrophenylajaoJ-S-naphthol- ^ SulllOttsaure In 500 ml of water, about 12.0 g of sodium carbonate is added to a pH of 11.1 poured out. The solution is made during the production of the filter screen e sprayed onto the crepe paper used · The Finished filter rods are made with filter rods Cellulose acetate fibers incorporated into cigarettes as described above * When the cigarette bulges, the paper filter absorbs acidic constituents from the raw material and reacts with them, whereby its color changes from blue to yellow,

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Example 5

Dissolve 2 g of brilliant yellow "in 500 ml of a saturated sodium bicarbonate solution and add 500 ml of ethylene glycol; you get a reagent which, when used in accordance with Example 4, has a color change from light red to yellow »This color change occurs in a pH range from 7.9 to 6.6, if this is assumed, that a fairly large proportion of the sodium bicarbonate with acidic components of the smoke was converted before the original

value
The high pIMtaraiak of about 12 was lowered so far that the color reversal takes place. Analytical studies on smoke from cigarettes that contained ITodium bicarbonate in their filters actually showed a sharp decrease in volatile acids in the smoke

Example 6.

One prepares a solution of 50 mg of bromine-Oresolgrün in 50 ml of water "the t5 ml Xthylenglykol and as much citric acid _r that the pH of SiOH of the solution to 3> 0 aenkij" Bring to this solution to one of the above-described Filteräbschnitte on So »you get a product that changes its color from yellow to green when you smoke, which is due to the absorption of the basic components of the smoke, which increases the pH value of the filter to over 5» 4- ·

Example 7 .- ,,

Prepare an indicator mixture from 10 mg of methylene blue dissolved in 30 ml of ethanol, which is mixed with 30 mg of phenolate in 20 ml of water and 14 ml of ethylene glycol; the "dosage becomes basic

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made by adding 15 ml of elnej; watery. solution (5 mg per ml) * Put the reagent in a cigarette filter incorporated, the latter shows one during smoking color change of purpui? au green «Diesel! Envelope occurs when the filter has absorbed so much acid that its pH value is about 7 »5 lowered int. / _

Yervrendet to a sour-Basö-Indikatör, SO: neittraiisiert optionally present tfatriumbicarTaonat the acid component parts of Tabalcrauchs "Until initial color of liltertuateriöilo remains ^ get" up dast liatieiüinbicstrbonat duroh the acidic components neutralized igt _f whereupon there, "jmterial his color "changes *;

When preparing% on zwelteillgeitt or Uualfiltern were Einöatasitloke 13 and 14 abutting against each other with a frans · * ent film 18, for example EALT tranaparentem öellophan or sfndetetti durohßiohtigeni EunsteföXjf ^ töRtilltt which can then be sealed, utn the pieces 13 'Ttae 14 aiisatiinienZuhal ^ s. In such a transparent shell, the filling 17 ϊη the Bins atz. clearly visible. The double filter is then üblioheVeise using the Mundötückpapiers \ t ~ on a cigarette 19, mounted so that the filling ti itn Einsata would except the cigarette end concealed by the paper wrapper 12 15, if not according to the invention vrttrde have an opening 21 the paper, over the filtereinsat-3 14 comes to rest. The finished filter thus shows

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as shown in FIG "2 eralchtHoh" a window or opening 21 whereA DoppeifiXter £ 2, the angearheitet the cigarette 19 _r iet and the I ¹ UIl- or JPilterroaterial 17 iat duroh this Fenste ^M * r ^ ^M behind the located Overlapping sockets 16 and 18 from $ ransparentfplie isiontable *

When the cigarette is smoked, the Rauoh Buerst penetrates the filter section H> in which ^^ certain components of the smoke are absorbed »Other main components are retained isurtiolc due to the filter insert 13 »which is generally a special one has a strong filtering effect on the peer and the larger lights present in the room, as its color is very fluid has a large number of extremely narrow passages, which act as a "labyrinth", as it were. The one present in the smoke Amount of / tldehydes and / or acidic or basic components can of course be reduced by introducing Reagents of the type indicated above, causing the color change in the Indicator can be narrowed down further. That way you get the smoker a clear and clearly visible indication of the effectiveness of the filter through the cigarette filter »·

In addition to the listed indicators, the visible iPeil of the filter nooh any other indicators or also other reagents can be used, which reduce the amount of undesired. Reduce raw components »The filter insert can also instead of crepe paper from some other fibrous

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Material / get print leg * otgleioh the 'crepe paper · aufgtund its failure, ' a & ü Iitclikator un ^ atidere Beagentien zu absorl? Ieron upü zuirticireuliaHeii * Uvorvorgt is opposite to & ereii ^ aGeVB ± open the ttioiator öti in further tänieren * """-... \ - ^'■;': ■ _ ■ ■■" -... ^{-: -;} "■" ■■ .- ", .- - ^; -

Patent claim

Claims (1)

DH. INQ. F. WUB BTBO F »'β MUMOKiW JMJ . 0. VUUS · 0 «* ΓΒΙΟ * Ηβ» ΒίΛ · »· 1A-32 394 1892926 Claims 1, filter for tobacco smoke »marked by an insert made of porous, absorbent material, which contains an indicator, in the presence of certain Beatand parts of the tobacco smoke a bag is made and is encased by a durohaiohtigeti cover and another cover made of ira weaeatl-lohon opaque paper , welohletater © has an opening _s which a Seobaohtung the JiIter fulfillment and the color change that takes place in it. 2, two-part hitcher for cigarettes and the like, naoh claims gtktnnaöiohnet (14) of porous, atjsorfrU & endeiQ material an indicator that ändtrt its y "rl) f hei presence of certain components of the Tabakrmuoht · in finer beetimoten loüitmtration and a second Abeohnitt (horse 13) *, inter alia povbsem illttrtoattrial by a first _portion? dtr arranged adjacent to the tvetttt i * i? as well as through a "both sides uneohli" etende transparent "HUXXe (16, 18) and inside there rl laying paper envelope (20), which has a viewing opening (21) over the first section (14) *" 3,? Llter naoh Anaprucii 2, because you raw g β kt η η ζ ei ο h η et, dad da «material for the first mentioned section (H) a creped rough filter paper and the filter material for the A wide section (13) is a fiber mass. 44/1117 4 * filter tiaoli claim »2 or 3» thereby g β ir β Λ η ^': - ■. ■. - a "■■■ ^':: - - ■■■. 0 et o Ii ft β t, dat the indicator / responsive to carbonyl groups? The indicator is: 'dw in the presence of aldehydes sseigt a larbura sauce 5 * filter according to claim 4 »characterized by Jc β η η 0 0 loh η et» that the indicator MalaohXtgrun 6 · Silter nauh Aneprurpti _; 4 * - daduroh geke η η a 0 ίο h— η β t 1 da0 the aforementioned Aljsohttttt as ßeagene with the aldehydes » 7 »tilte» "nadh Ane ^ uöii 0 _f daduroh geke» η ζ ei Qh a, «" * ■; ■ '# ■ "dei 4« t ladikst «> r öin acid bastr» Ittdikstor iöt> der in to » SEwten l »av * Baeeti a SarMangerung i 0 * Jilttr nmoh Aiaflipruo ^ 7 _f dadureh geke "η % et" rK ^ atf, d * i A * t it "iiBwahntt Al * ohttitt (14> iitte flhwetöhe Base 9 filter according to anfljpruoh t _f deduroli g β Ic β η η ^: ζ et 0 h. η et, because the first paragraph (14) contains sodium bicarbonate 10 * filter according to claim 2, characterized in that g e k e η η a e i ο h η β t, daö da «filter ralttels the rapier cover (20) kind of one Cigarette attached let, 909844/1117