DE1924495A1 - Cigarette filters - Google Patents

Description

DR. E. WIEGAND DIPUNG. W. NIEMANN DR. M. KÖHLER DIPL-ING. C. GERNHARDT

MONKS HAMBlURO

May 11, 1969

PHONE. 55 547 «8000 MÖNCHEN 15, TELEGRAMS, KARPATENT NUSSBAUMSTRASSS 10

¥ 14 264/69

Mitsubishi Rayon Co., Ltd. Tokyo, Japan
and

Mltaubiaki Acetate Co ,, Ltd Tokyo, Japan

Cigarette filter f

The invention "relates to cigarette filters, making empty and nicotine are effectively removed, as well as a method sur making the same.

Numerous types of fiber materials have been used used as raw materials for cigarette filters. An excellent engineered filter consists of a bundle of crimped cellulose acetate fibers and is described in the American patent 2,794,239. This filter has the characteristics that it has a certain degree of filtering capacity for possesses harmful materials, is easy and quick to form into rod form and that here the use of non-volatile plasticizers, such as triacetin and the like, becomes possible. However, the development of a filter is with a high filtration ratio is still necessary, since the harmful materials are not completely extracted from the cigarette smoke be removed by this filter and the ratios of the removal of tar and nicotine are not so are high.

909848/0729 ^: ·; sf £ CTED

Example * ·! * · Gives ·· «in ferfata ·» »tel <t © s di® surface and di · Absehnltt · der Sss« zn taariieiSa wer &<§ »and« in procedures where strong or beri ^ mt »loeederiYate »« 1 · Cellulose,! Ethyl® · !! ®! ® »« «? and partially hydrolyzed · Gellul® ·· »Puljncttliylaetbaorjlst, IttiyviBjlaeirtfti; nnä ral _v a3ctlTi «: rbee l

hars · and JUctlTtoal · as Mäaortbmnttma Dlee · &α1> · η the fftte part, the Asumm of the dx-ixen, otwofil die
net iet.

The fefladling drops there

ehungen about a Terfabren snr Mms & tmlXw & g @ ia @ e tenfiltere, the a · gate 3 · * τ- imd Mi@otiB.0mtf®siiaig j «d3sh den öessfcaaolc od ·? the Aa ^ in the I «r 2Igarett

lauehen sees veraehlee & tsrt *

Ms Irfinduae concerns a »
a built from PolyTinyl alcohol on® · dae old eopolTaerleierbaxe »Tinyl ^ erbindiangem let, and / öd ·? a devil T «matura a 7er8elfung * v« rt τοη at least 50 pounds, '«» lefcas old cepol7B «rlel« rbaz «tt TlnylTerbiadung * & grafted let» removed.

The inspection test · according to the invention is a ₉ which · has a porous rock face · PolT »r the ··· grafted polystyrene« 1t 15 to 200 ■ / g surface area and ■ 1t of a size τοη 1676 to 53 M (10 to 300 aeeh) Dlsperglert in a "Bundel τοη aeehaniaeh ruffled cellulose flake" tatfa "rn old 1.6 to 15 denier starch and 30,000 bla 90,000 denier tesaatfadmistlrk · omitted.

Us fimndpolja «r ·· becomes polyvinyl alcohol or partially -reveeift ·· Polyrinylaeetat applied · The degree of polyaerization of these polyesters lies between 500 and 10,000.

909848/0729 BADORiGiNAL

fa dot aaf dice · lolyaercB eafaapfrepfeBdeB ■ erea gchBrea * olm · daraaf teeetetakt as artb _v loryleftnr · lletteerjlea "re" ad AUgleeter dleaer starlings, fceleplelavele Htthylmtheorylet, lthylaerflat "id Bntylacrylat« «ti clear EottlcaeteffaaUL ¹ VOB 2111 · 1 S * cmtepKleBt "AerylBltrll, Tlsjlettlerld, Ti" yl £ "cneiaorl <," ftr "pyl *" ad itjrol. lit · «· Mtaeetren köiaynl · 11 · Ιη

la a «slseh torn awl or guess itrttltoa T« x «oad« t «Cvd ·« · QBt «r dl« M & HoBoe »r« m v «z €« m dl ! • «• vtyp ■■ ailrketn MvonrastfOd dl · a PfropfpoljMTwi lw% «m« in · tote Iffialtlt «η Τβ · τ« ad Ii- • otlm · Iafols «d« seta elsd dealt te * oad «r · tat · filter explained.

SI · lteag · d ·· a «f d ··

YlaylaoBomrcB tetrlgt 10 »la 310 fle« · «^» teaegea aaf lall the slope is lower ale IO <* ♦ ».- £»

tel dea ertaal

al "At" raaltcA vard "B," iaraad "" aam dl · Ncai · atertels rom 310 Oaw ·· ^ llagt · *** eaaateaek adar da · Arom d ·· laaete * aafallaa. Valtaibla vlrd ·· alaat ·· »T» rsait ₉ Ia «ia * r frdiarmi lfaac ·« la 510 Oav · - ^ aofanpfropf en »da al« rtel Sotelcrlfteltca la the Xadmatria aaftretea. The Keaee dee laraweliaadam Mjaaren tetrlgt voxsasawelee 10 ale 310 vcv »-4t dee eraadpolTajcr ·» · Ba dia ffreafpolyaaxea la dlcaea lereleli alac aaaajcaeleliBete Afflm ^ tftt aaCa aa aCa aa a «tftt an feca aCa aa aa a« rea a tele tamaliai

let · »aftgXleat« et © ftfetrctteaflltasr nater Aa * Such SoXyscr te & BaatclIeB · Ala Tarfateca aar Kfrepfpel ^ eerlaatlaB the Irf £ »i« ag kaam aatapveaaeBd der Irtaa der Tlnylaoaoosc

YerfateCB txp ^ Mt «isrd ·» »telcalale« cle «eis fer *

909848/0729 'bad ^

drive using τοη persulfate »peroxide» Cersalsen or Asobialeobutyronitril ale catalysts »as well as a Operation using radioactive rays and The like. Furthermore, the polymerization can take place in a homogeneous system as well as in a heterogeneous system. be performed"

These polymers have good adsorption capacity for ingredients * the one bitter geeobeack and one beisenden fferuoh 1 «Rauoh τοη tobacco yield» like phenols and aldehydes, however, are a suitable exception AbeorptionskapasltSt for components that are necessary for the Aroaa are responsible, for example Vasser and organieehe Acids · sea half result in the nit the filters geaäS the invention equipped cigarettes no biting 0er smell, bitter taste and no lack of aroma, as these passages degrade the empty and the hiootin in cigarette smoke » so that sioh a harftonized Rauoh results. Furthermore it is aöglioh, the facts of the distance of tar and violet by changing the species and the soil the Tinylaonoaeren to vary · This will it is okay to make cigarette filters for the branches of sabak and the type of öeeohaaoke or aro »ae entaprioht.

Although there are many kinds of lore of the graft polymers can be used in cigarette filters the finely divided powder aa most preferred

The finely divided powder has a size of 1676 to 55 M (10 to 300 mesh) and a preferred lellohen size is 250 to 190 ya (60 to 80) aeeh) and no more preferred is a surface area of 15 to 200 » ² / g Pelver is a porSea finely divided tea powder. Bas spesiflsohe Gewloht of the same amounts to 1.1 to O ₉ 2.

BAD ORIGINAL '■ ■ ί i 9 8 k 8 / (Π 2 0

Bu finely divided! UTW suffered "loh MOh following" * ▼ experienced manufacture!

(1) A Polraeraufsolentarang, which they dissolve or disperse The ion of the graft polymer is loosened Solvent, water or general salting out is separated by precipitation, dried, pulsed and sifted, eo dai the size of the tellohen within the presented area is obtained.

(2) Line the graft polymer-containing reading or dispersion is frozen to less than -20 "C and then the solvent is removed under reduced pressure of 18 to Hg feie 1.2 χ 10" ⁵ asj Big. Due to the tropical weather, foljaere is pulsed.

(3) Ha "da" graft polj "ere containing LOsumg odor dispersion is through the TersprOnen in a troubled heat. τοη 60 ola 130 ^ C or duroh Terssprung at 40 to 110 V. dried at 260 to 58 bsi Hg and then pulsed with polymers.

The resulting porQee f divided up pulTer is dispersed in the "Behm" material de · lUtere, for example opened Taeerbindeln, and then the "FMOvbtadol SU Stabforsj processed" ad eohlleBlioh "u pilter pilterso is blown. You will learn about the production of the filter by Eugaee doe PulTera au dom Tilterbondeln an aioht { covered. Dae lelohteete Terfahrem eeeteht in it "that the pulTer in one" opened strand through a disfergertt at the stage of the production ttbliefcer fUteretopfen is dU-pergated, whereby a paper temp about 7.9 "■ Dttena • or through a smlgarette ^ eimtero Tilteretopfene is rolled around damm this plugger in 17 m Llmgo to form the filter tip *.

909848/0729 / bad original

Si · beToraugteate 'liter ge · * · dar TSrt indung "nthilt 5 to · 80 Jt a porOeen finely divided pulrera, valeaaa ana dan Toretendem impressive graft polyeeren consists" drawn on daa Qavloht dar Taeern, dia in "Inaa Jaaerbindal Ton aerluaanlaetatoh it 1.6 bie θ Dealer Eiafadenatlrke and 30,000 bla 90,000 Denier represent Oeaaatfadenatlrka and "It 5 bie 50 Iräueelungen yes 2,5 β" dlapariiart "Ind.

Dia by grafting the Tiajlaoaoaaraa on polyrlnylalcohol and partly velae rereelftee FoljrinjXaoetat harga »etell finely divided pulTer graft poljraaraa beeitiaa no great Abeorptlonakapaaltlt for Yaaaar and the mouth and bind Tor daa aeuel deitigallteh Tobacco not feuoht "erden aad dar Aoaorptloaawidar * atand duroh dissolution daa polyriaylalcohols through thieoohtigkelt auniaat. Ba veltarhln daa felnaertellte Pul * Tar beeitst a suitable hydrophobic llgeneohaft, seigt • m daa Torteil, DAJ is Kaueh daa Tahaka nioht tiberidlölg trookaa is. Said furthermore the removal is hai the preparation daa faaaka augeeataten farfOaa or Aroaaa ia Tergleloh au polyrlnylalkohol low Iat, the Rauchgaaohaaok daa tobacco is not tersehleohtert.

Bai dar Heratallung dar Filter ia advised beaoarlabenen Yelee kaaa aia aua bucket LOaung or Diaperaioa beatehemder Heaatoff old eiaaa higher Oaaalt ale 20 Oew.-Jt einaa naatiflalerara, via Trlaoetin, Ithylenglykolaoatat, Polyethylene glycol acetate or - «ethyllthyl-Itaer and the like, o4ar Tiaylaoetat ia a Kenga τοη 5 bia 18 fav.-Jt aef da "ttraag aufeaprOat" ardaa, as dia faaara aalaat aovla dia faiaaarteiltaa PulTar aad laaara aa

ORIGINAL BATHROOM

909848/0729

tie, sewing at least know other Sus & tse or Adaorptlonsaittel for harmful materials herealt susaaaen ▼ can be used.

Although it is bevorsugt on stftrksten, Cellulosed iaoetat as fiber-mi use as besehrieben above, know säatliohe fibers "as polypropylene fibers' or l ^ lskoae-fibers as they are ale fibers for filter known ■ ind _v Terwendet *

Auber the above-described f leather manufacture are AUOH filter la of the invention, the duroh spraying a LSaung or Dieperaion of Pfropfpolyaeren - the filter train eweoks adhesion dea Pfropfpolyaeren "on the surface of the fibers, removing the LSaungsalttela and conversion of the strand duroh unroll en With Paper Furthermore, within the scope of the invention there are filters in which the powdered powder is contained as ityer-used catalyst where fiber filters are sandwiched with soles.

The duroh grafting of the B & noaeren, such as methyleethacrylate Polyeere / n produced on polyvinyl alcohol and partially saponified polyvinyl acetate are in Aoeton, Di- "Ethylsulfozyd (SNSO) and diethylforaa * jld (MC?) Easily ^ lSslloh:

Nethylaorylatr JLthylaoetat, IMSO and BNf Xthylaorylatt toluene, MISO and BMf Butylaorylati toluene, BHSO and BMf Acrylaaids BMf Acrylonitrile: BMSO and BMf

9 0 9 8 /, 87 07 2 9 ''

BATH ORIGINAL

Toe Ö «* ieht« point toxieeber 2ig * nsoli «ft« ii and dtr Itlohten Intftmunf 4 ·· LStungralttcls elnd SIiSO and HIP sees b "" ond "re al" Lö "me" iltttl for di · Pftropfpolyaerot g # tiga # t, and Ao «toa is repeatedly turned over.

Bit fflr ait Tiaylvoiemrrva «tpfropfttn

listed. Si «T« rwendb * r «n • iBd jtdooli «us den Yoretehvnd aafK * fQlurt« n CbrSndm

Pslla · 1α c «* igBtt ·· LQmmeniltt«! nloht «ur Terfflettht, becomes the graft polyetrine "ine" Vioh alttvl nuMMt pit «la ·· oberflfteb« naktlT «n putty ·! arnter

Boaogwun Imleios di ^ «rciert _t di · dun di · Faeerttodel is judged.
Di · in d «B l * iepi * l * m aagmnaAt«! T * rf äbata «« sdca «rlluterti

17 _f 5

d ·· Bauoh · !! · SauoliTorrlohtun «

l * uofts «it 2

! • «otetetand 5 © ···

Iau0k »tr5aua« 17.5 el / ··· T «rf« ar «n« ur Ssaaluaf d ··

(10

! ■■■ 111 dw g «r« uohttn

Si% t 20

n »laaly ··
d ·· 1 ·· * ·

909Ö4Ö / 0729 ^{BÄD QRiG! NAi}

Method of analysis of the method of Alkalidaepf-Vleotins (Oil alkaloids) distillation and ultra-rio-

jet absorption

Approach based on analysis τοη epektroiietrlsohes Terfahren Phenolic compounds old Witrosophenol

Filter resistance ■ A _{x 100} At the removed amount in the filter tip Bt removed quantity ia Osebridge filter

(removed amount in a 10 ^ Uigen fatriuehrdroxjd-

gene)

(For the solution of the phenolic compound

The standard table was the Nippon's side-cut counter Monopoly Corporation, which owns the acetate filter bits had been removed. Cigarettes with 78 - 2 mi H ^) Gaedurohllleeiglceitewiderstand was selected for the application.

The method used to beat the surface area of the invented porous finely divided pulver consisted of the BBT method. An inert gas was adsorbed in the finely divided powder near its boiling point. Aue of a future, in which the adsorbed quantities of the oasis were plotted, the quantity of the oasis required for the formation of a stonraolecular solids on the surface of the solid matter is determined from the ( related surface area. The method is based on the following lit. ratttratellen beaehriebeaji S. Bnmauer »PH» eset and ». fellen J. A« · Obea. Bit «· Bi. 60» 8. 509 (199 ·) wU ?. K. leisen and F. f. BggesV seas AnaL Che « Vol 90, 8.1OT (1958).

The sur BeatiBsmng weete tobacco was tawtitioned at 25 * 6 and to the relevant Veaehtigkelt wthread 48 State ".

9098A8 / 0729 bad original

example 1

100 of Polyriaylelkohole venal old Onea by-BOhnlttliohen Polyaerisatloaegrad 'voa 8000 and eiaea Yerseüungswsrt of 92% were completely dissolved in 1,600 parts • rhltstea distilled «« ater at 85 ¹ C in Onea Btiokstoff stroa golBst and then two $ 5 feile dea Oer-Aaaoniuaettlfatsslses, 230 Parts of Methjlaethaorjlat and 2.0 files of concentrated nitric acid (ionic concentration 60 to 62 pounds) hlerai given. The graft polymerization took place at 60 K for 4 hours (degree of grafting 135 Öew.-A After the end of the exposure, the suspension was poured into about 10 times the amount of methanol while stirring vigorously. The resulting heather was washed, filtered and dried and then powdered , whereby a finely divided powder of 250 to 90 yu (60 to 80 aesh) was obtained

Hs strand aas aeahanisoh crinkled Oellalose laoetatfasera old 4 dealers tiafertemgrflie and 55000 dealers Seed thread strength was opened aasrcieaead. laohdea Triaoetin la eiaer quantity vea 6 "7" ew · - ^ on dea strand what was to be sprayed was described above Partly powdered, the old isthllaorylate is plumped " te »YelTvlajlalkoael bestaat, la elaer asage from 29.0 • ew * -f> Is "ca Straag cwreh eiae Dlsperglerverriehtaag saal" eiasa Strsa vea 2 als 30 sa / see | iisfersiext Straag warde aaaa old 7, f aa Saroaaesser water lawsa dang eiaea fapleree aittele eiaer Slgaretteawiekalaaeehias aates? Biliaag eines fUterstetfcae amfgowiskelt «

BAD ORfGINAL

909848/0729

Stopper was cut into 17 milliliters per day from hospital. The tips were then attached to the base of the standard cigarette with a cellophane tire, tone 12 “wide,” or that they were kept in close contact with the surface. The characteristics of the filters obtained are listed in Table I in the Tergleioh as a "filter" which did not contain any powder of the graft polje.

Vr erfiAdungageaU erhlltlieha futer beaaJ not me "ine eat · ftitfernung γόη feer" nd Ilootin in balmy the Saoaka but AUOH a right, "the phenolisehen TeroiBduagen bitfermmg as beiteade ingredients and mv to a auageaalohnetan Bauohgesohajaok for dia Sauoher.

Oasdareh- tar ent- liaotin- mtfer-

llaaig- femmngs- antfar- *

keitswi- VaAiIi-.

daratand nla (au H ₂ O) if)

• rfindungsgeaM 95 49 57 80

Tergleiohabei-

apiel 49 40 50 64

9 0 9 8 A 8/07 29 'BAD ORiGiNAL

«12 -

100 felle «la ·· polyvinyl alcohol bit of a Teraeifunewert τοη 87J *» 35 «rush Aerylaald, 180 file purified styrene trad 2500 style · Waaeer warden tsater Stlekatoffetroa veraieoht« Iaoh Sugabe of 3.8 files · Peraml «fat was a Baiaelonepolyaeligerleation 4 Pfropfrerhiatnt · b * trs «18056, E» oh $ hours «tired fivauktlonaproäukt duroii freokenel ·« «frozen and under a reverse pressure was 1.3 × 10 μ» 23 $ treeknet * The poruee material obtained was powdered white as the material was not a partial hengrese wm about 190 to 135 M <80 - 110 neanea) mu «e« w »Jb2, t. 9a "eraaltene Pi ^ coföepoly- ■ere had about an overriding range of € 5 β / **" beetlBBt near the BSf-Terfahrea *

lin strand aae aechaniaea krasaelten eellvloaeiiaeetatfiiea with 4 denier linfadematirke wsA 55 000 Senier Oeaastfadenatarke was aaaseieaessi m aeetia in a lot of ▼ © »$« 7jS _t btaee «» on i »» iea strands »nitfriee érte ₉ differently eew «-fl in the strand derail« Sä® »gate dietergiert · Daca wnri« Ae?
wiekelaaaahine anfgewi ^ Eelt mal
■ aea 4 Flastifiaiemmg "Ktt"
to cool down

Scr ernalteae darning · »we ^ te rna füterapitsea

Kit an Aeftaiürti » widerataas were the You Irgelaiaee aind in tabf »UL #

in

1? to ttitev -MumbU

filtmr

909848/0729

BAD ORIGfNAL

fab !! II

Gaaduroh ~ tar- nicotine- vernal t-

läseig- «nt- distance» - never & w Bnt-

keit * - feraunge- behavior »!« distance

resistance is similar to (£) phenol

S ₉ O) never (£) connections

findunge »

geaäl 57 64 47 89

glide

examples 49 40 30 64

100 Tail · cinea Uilwiie * rwxmlfttn Polyvinyl * c «tato with an average degree of polyetrieation τοη 6300 and a ·» Y * maturationaw # r% of 64? 6 _t 35 t »il · Aery! Aaid and 84 T« il · H «thylm »Thaez7lat ward ·» Bit 1200 parts deetilüertem Waee «r röraiaoht *» ach Sugab «τοη 4 * 2 feil · * Perculfat vurd * a 3mulaionspolja®j? I« ation durehg «leads · Dae Ffropfwr & eldBi» amounted to 65 ^ _s

The "reaction product was under pressure in a Heis ~ et rom τοη 128" C sar formation eia "s finely divided Fulvere sereprülit" Tissue was finely divided, bit of a part size was selected about 250 viM ItG a (60 Me 90 Beahe ·) The upper äc he from «rich dee er & al texten f * ia» issued PulTera amounted to @ tw% ZB m / $ ₉ ! »stiaeit rnmeh

909848 / 072S BADORiGiMAL

A strand of mechanically crimped polypropylene threads Bit 9.5 denier single thread size and 82,000 denier oil seed thread size was opened sufficiently. The strand was made using a 5% solution bit 4.2 wt .- ^ ithylenTinylacetatoopolyBerea (72s28) in toluene on the Strand sprayed and then. became the finely divided pulrer of the above-described graft copolymer »in one Amount of clay 23% by weight dispersed in the strand.

The strand containing the finely divided pulrer was processed into a sigarettenwickelaasohine to form a tilter stopper with a diameter of 7 _f 9 bb "which was then cut into a length of 102 + 0.2 bb" further sons were obtained filter pitxes with a length of 17 mm clay ·

The properties of the filters obtained are in fa-> belle IXX together bit that of a filter, welehes made of known folypropylene fibers is «listed«

Table IXI Gasdureli «tar-lieotln ratio

casual- distant- the ent · »

Distance distance allowance distance

resistance r received- {%) phenoli © rather

CBB H ₉ O) never Oi) Tbid

found »

gCBif 58 48 36 72

same »»

example 53 51 27 42

BATH ORIGINAL

909848/0729

Βο1 ρ1 1 4

EIa Pfropfpol weäter ·· was «made * by 100 Share polyrinyl alcohol, which is a thermosetting poly aerisatloaagrad tob 1750 and a freezing value of Θ5 * had, 30 part · HethjOaethaerjrlat and 150 «hurry Methacrylonitrile in water and then «in« Saulsloaspoljaerleatioa was carried out · Xn 4 «« Al · ? olym «rlti» ttng «nthmltead« Syst «« vwNlta 95 ropes activated Hair dryer given · B * e OeBieeh vo? de frozen at «63% uad under 1 as Hg getroelcaet

Ia eiaev Mlale became dft «Pfropf ^ lyessre su ela« r feiahelt iron about 250 »i» 190 ^ a ($ 0-80 aeaaea) ge-Sa « finely divided BaTrer had an Obe? flftohea-> Tone 92 aVg

lin 8traag au · aeohaaieca krlitseltea lOlypropjlenftdea old 9.5 denier Slafadeastlrk · usd 80 000 6ea * at-

mird · by PreSluft gm & itnung * Sann was eiae la toluol old 4 »2 0ev _o - ^ ₉ be @ ogem mt ü% n Stsaag» ÄthylenTinyIftc «tÄtQoj? oly» «r« a (72128) on dea 8trang Then there was · Toretonead be * onrl $ beae feia "* rteilte powder" u dea strang la eiaer slope τοη 31 * 1 Oew.-Jl duroh a Bi «perglerger £ t sugesetst · 'Mr da« feiiywrteilte? ulTi * r unnalteM · strand wtrde old «l @ © iaer £ igar «tt« B- «iokelBaeonine with the formation of a flittrs ^ pfea · old 7« 9 aa Durohaeseer processed »the daaa su 102 ♦ O ₉ S an« eaobnit ^ en »urde · Ihiron further · Sohneiiea imrlea filter * epits old with a length of 17 am ernalt «& ₃

Üie Bigen * chaft «n this filter pitsss» lad la T * - belle ZT la Tergleien old that one ·· Filter up · gefunrt «welenee no finely divided powder © mtnielt ·

8/0729 "'

BATH ORIGINAL

Table IY Tar-
•at-
remote
Terhtlt-
never (*) Kleotln-
distance·-
Tcrhftltnie Ratio *
the lnt-
Fernuag
phenolics
Y «rbladuae« n Air Duroh
casual-
resisted
<* · H ₂ O) 57
29 76
40 > 43
25th • r- 57
51 equal
oelapl ·! ·

100 Shares «ia ·· Polyrieyl» lkohol «ait« iata Polyegrad voa 500 «ad mimmi Y« r «« lfitBg »wtrt tob eovi · 100 Τ · 11 · Aerjlsaid wur4« n in Wasms * v «rel« okt. M «graft polynomial trisatlon is carried out by Sueats from eer-Aaaoaivanitrnt b« i 7 <K while 3 Btuai »* u« «. Ua PJTrepf-T «rhAltnia d ··« rh «lt« n «n Polyawrea τοα 34 Oclr« «^ WKtarn « r-

Graft polythene aria toluol au la la r old of a consentration voa 2 (Jew.-ji galönt. IMiohiinlaoh kriueelt · CelluloeediacetetiMea ait 4 Dealer Itnfedeauad 55,000 Dtnier O «« aatrad «astllrk · became« a iu-

relohend open uad daaa dl «tos PfropfpoXyaer * holding Soluolltfeuag hieratef eittel * eiaer ▼ orriehtuag« ur Sugate eiaie üAetifiBierer The Rfropfpolya # r · was contained in the strand in »laer & * mgm . Dana became TriacetIb la «in«?

909848/0729

BAD OR ₁ QINAL

6 Gew.-Jf on the strand through «in Zentrlfugalaufhringungsgerät sprayed on for the plasticizer. The strand νώτα · on a cigarette wrapper with the formation «in ·· Stopper with a diameter of 7 * 8 am processed * which was then cut su 102 £ 0.2 may. By further The filter tips were preserved for 17 me

Until properties Λ · χ Filterspitsen in Table V below compared to those given a filter "the a obtained by the same method, but without the addition of the graft polymer Toluollusung

had been·

Table T Qas through tar lieotin ratio

casual- «et- or- the Bnt-

ksits- fer & uttgs- fexnungs- fernung

resistance ratio phenoliselier

(s »B ₂ O) never (*) (K) fbid

inventive

according to 60 51 42 75 Comparative example 49 40 28 64

90 9 84 8/0729

Claims (6)

Claims π J cigarette fliter »containing at least sines of the graft polymers, which consist of sinsm old yiny! 2. Cigarette filter according to claim 1 _t ~) which at least one of the vinyl monomers consists of methyl methacrylate »methyl aylate» ethyl acrylate or butyl acrylate. 3. Cigarette filter according to Claim 1 or 2, characterized in that the graft ratio is never 10 to 310 wt amounts to. 4. Cigarette filter according to claims 1 to 3 »characterized in that the grafted polymer consists of a finely divided pulver with a particle size of about 1676 to 53 » (10 to 300 meshes). 5 · Cigarette filter according to claim 4 »characterized» that the finely divided pulper has a surface area of 15 to 200 * ² / g. 6. Cigarette filter according to claim 4 or 5 »thereby marked »that the finely divided PulTer is built in is. 7 · Sigarette bottle according to claim 1 to 5 »thereby characterized that the finely divided PulTer in a ruffled 1.6 to 15 denier Binfadeaetarke fiber bundles and with 30,000 to 90,000,000 denier total thread count is dispersed. B, cigarette filter according to claim 7 "characterized in that the" vasers consist of cellulose diacetate. 9 · Sigarette f liter according to claim 7, characterized in that » that the fibers are made of polypropylene BATH 909848/07 2-9