FI57209C - REFRIGERATION FOR THE SUSPENSION OF BARIUM SULPHATE IN WATER - Google Patents

REFRIGERATION FOR THE SUSPENSION OF BARIUM SULPHATE IN WATER Download PDF

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Publication number
FI57209C
FI57209C FI760878A FI760878A FI57209C FI 57209 C FI57209 C FI 57209C FI 760878 A FI760878 A FI 760878A FI 760878 A FI760878 A FI 760878A FI 57209 C FI57209 C FI 57209C
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suspension
barium sulphate
refrigeration
water
barium
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FI760878A
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Finnish (fi)
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FI760878A (en
FI57209B (en
Inventor
Nikolai Petrovich Elinov
Isaak Yakovlevich Gurevich
Afrikan Nikolaevi Dranishnikov
Nina Efimovna Goncharova
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Le Khim Farmatsevtichesky I
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Priority to FI760878A priority Critical patent/FI57209C/en
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Publication of FI57209C publication Critical patent/FI57209C/en

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Description

RSr^l M (11)*tUULUTUSJULICAISURSr ^ 1 M (11) * VENTILATION PUBLICATION

JjSTff 1 J ' ' UTLAGGNINGSSKMFT 5/2U9JjSTff 1 J '' UTLAGGNINGSSKMFT 5 / 2U9

TjwEf C (patentti «Työnnetty 10 07 1930 ÄrVe, Patent meddelat V " ^ (51) Kv.lk.'/Int.CI.1 A 61 K 33/04 ' A 61 K 49/04 SUOMI —FINLAND (21) 760678 (22) Htk*ml«pU*»~Arw5kninnd«( Ol.OU.76 *' (23) Alkupllvt—GUtlghtcadag 01.0U. 76 (41) Tulkit |ulklMksl — Bltvtt effamllg 02.10.77TjwEf C (patent «Pushed 10 07 1930 ÄrVe, Patent meddelat V" ^ (51) Kv.lk. '/ Int.CI.1 A 61 K 33/04' A 61 K 49/04 FINLAND —FINLAND (21) 760678 (22) Htk * ml «pU *» ~ Arw5kninnd «(Ol.OU.76 * '(23) Alkupllvt — GUtlghtcadag 01.0U. 76 (41) Translators | ulklMksl - Bltvtt effamllg 02.10.77

Mnttl· J. raki«t«rlhallltut NM*,. |. .«M.Mnttl · J. raki «t« rlhallltut NM * ,. |. . «M.

Patent- och ragittantyralaan ' ' Ajelun och uti.*krtft«n pubtiond 31.03.o0 (32)(33)(31) Pyydetty etuoikeu* —B«|ird prior It «t (71) Leningradsky Khimiko-Parmatsevtichesky Institut, ulitsa Professora Popova lU, Leningrad, USSR(SU) (72) Nikolai Petrovich Elinov, Leningrad, Isaak Yakovlevich Gurevich,Patent- och ragittantyralaan '' Ajelun och uti. * Krtft «n pubtiond 31.03.o0 (32) (33) (31) Requested privilege * —B« | ird prior It «t (71) Leningradsky Khimiko-Parmatsevtichesky Institut, ulitsa Professor Popova lU, Leningrad, USSR (SU) (72) Nikolai Petrovich Elinov, Leningrad, Isaak Yakovlevich Gurevich,

Leningrad, Afrikan Nikolaevich Dranishnikov, Leningrad, Nina Efimovna Goncharova, Leningrad, USSR(SU) (7U) Oy Kolster Ab (5U) Menetelmä bariumsulfaatin vesisuspension stabilisoimiseksi -Förfarande för stabilisering av en suspension av beuriumsulfat i vatten.Leningrad, African Nikolaevich Dranishnikov, Leningrad, Nina Efimovna Goncharova, Leningrad, USSR (SU) (7U) Oy Kolster Ab (5U) Method for stabilizing an aqueous suspension of barium sulphate

Keksinnön kohteena on menetelmä bariumsulfaatin 20...Uo paino-piisen vesisuspension stabilisoimiseksi,The invention relates to a process for stabilizing an aqueous suspension of barium sulphate 20 to 100% by weight,

Alalla on tunnettua, että bariumsulfaatin vesisuspensioita käytetään laajasti lääketieteessä mahan ja, suolen seudun röntgenografiaan. Kuitenkin barium-sulfaatti saostuu nopeasti joutuessaan vatsan happamaan ympäristöön eikä sen vuoksi pysty antamaan teräviä röntgenkuvia. Tämän haitan poistamiseksi käytetään erilaisia aineita, joita lisätään bariumsulfaatin vesisuspensioon sen stabiloi-miseksi. Tällaisia aineita ovat pektiini, anioninen polysakkaridi yhdessä suur-molekyylisen aineen kanssa ja galaktaani-polysakkaridi. On myös tunnettua stabiloida bariumsulfaatin vesisuspensioita metyyli selluloosalla. Vaikka mainitut____________________ stabiloivat aineet täyttävät röntgenografiän vaatimukset, mainittuja aineita sisältäviä bariumsulfaatin vesisuspensioita ei voida säilyttää pitkiä ajanjaksoja eikä niitä senvuoksi voida valmistaamuutamia kuukausia etukäteen♦_______________It is known that aqueous suspensions of barium sulfate is used extensively in medicine and gastric, intestinal region röntgenografiaan. However, barium sulfate precipitates rapidly when exposed to the acidic environment of the stomach and is therefore unable to produce sharp X-rays. To overcome this disadvantage, various substances are used which are added to the aqueous suspension of barium sulphate to stabilize it. Such substances include pectin, an anionic polysaccharide in combination with a large molecular substance, and a galactan polysaccharide. It is also known to stabilize aqueous suspensions of barium sulfate with methyl cellulose. Although the said ____________________ stabilizing agents meet the requirements of X-ray chromatography, aqueous suspensions of barium sulphate containing said substances cannot be stored for long periods and therefore cannot be prepared a few months in advance ♦ _______________

Alalla tunnetaan myös bariumsulfaatin vesisuspensioiden stabiloimismenetel-miä, jolloin suspensioihin lisätään paitsi yllä mainittuja materiaaleja myös pinta-aktiivisiä aineita. Pinta-aktiiviset aineet parantavat suspension varastoin-tistabiliteettia, mutta ärsyttävät mahalaukun ja suolen limakalvoja, ja tämän 2 57209 vuoksi niiden käyttö ei ole toivottavaa.Methods for stabilizing aqueous suspensions of barium sulfate are also known in the art, in which not only the above-mentioned materials but also surfactants are added to the suspensions. The surfactants improve the suspension-storage tistabiliteettia, but the irritation of the stomach and intestinal mucous membranes, and the two 57 209 therefore their use is not desirable.

Tämän keksinnön tarkoituksena on saada aikaan sellainen uusi menetelmä bariumsulfaatin vesisuspensioiden stabiloimiseksi, joka eliminoi tarpeen käyttää pinta-aktiivisia aineita.It is an object of the present invention to provide a new method for stabilizing aqueous suspensions of barium sulphate which eliminates the need for surfactants.

Keksinnölle on tunnusomaista, että mainittuun vesisuspensioon lisätään neutraalia, haarautunutta homopolysakkaridia» so. fi-1,3-«i-1 ,U-o6-1,6-poly-glukopyranosyyliglukoosia määrässä 0,3-0,6 paino-)? suspension määrästä laskettuna ja haluttaessa myös glyseriiniä.The invention is characterized in that a neutral, branched homopolysaccharide is added to said aqueous suspension. β-1,3- (i-1,1-6,6-polyglucopyranosylglucose in an amount of 0.3-0.6 wt.%)? based on the amount of suspension and, if desired, glycerin.

/3-1,3-^-1 ,6-polyglukopyranosyyliglukoosin kaava onThe formula for β-1,3-β-1,6-polyglucopyranosyl glucose is

CHgOH CH20HCH 2 OH CH 2 OH

CHgÖH CHgOH fH2 ni ! n f \ —— jossa n^ = 0,5~2 ja n = 5*10^-9‘10^.CH 2 OH CH 2 OH fH 2 ni! n f \ —— where n ^ = 0.5 ~ 2 and n = 5 * 10 ^ -9'10 ^.

Yllä oleva polysakkaridi tekee mahdolliseksi lisätä bariumsulfaattisuspension stabiliteettia jopa 90 päivään saakka ja suspendoitaessa määräajoin uudelleen jopa 1 vuoteen saakka ja pitempäänkin.The above polysaccharide makes it possible to increase the stability of the barium sulphate suspension for up to 90 days and, when periodically resuspended for up to 1 year and longer.

Edellä esitettyä stabilisaattoria sisältävän bariumsulfaatin olotila suspensiona on helppo ylläpitää uudelleen suspendoimalla.Varastoitaessa suspensiota hyvin pitkän ajan havaitaan tiettyä kerrostumista, mutta vähäinenkin ravistelu riittää palauttamaan suspension entiselleen.The state of the barium sulphate containing the above-mentioned stabilizer as a suspension is easy to maintain by resuspension. When the suspension is stored for a very long time, a certain deposition is observed, but even a slight shaking is sufficient to restore the suspension.

Mahan ja suolen seudun röntgenografiässä käytettävä bariumsulfaatin vesi-suspensio sisältää (painoprosentteina): 20—Uo $ bariumsulfaattia, 0,3-0,6 % mainittua polysakkaridia lopun ollessa vettä. Polysakkaridiväkevyyksillä alle 0,3 p-Jf ei onnistuta takaamaan suspension pitkäaikaista stabiliteettia, ja yli 0,6 /£:n väkevyydet ovat ei-toivottavaa, koska muodostuu geeli, joka tekee suspension huonosti uudelleen suspendoituvaksi.Gastrointestinal barium sulfate aqueous suspension is used in the region röntgenografiässä comprising (percentage by weight): 20-U o $ barium sulfate, 0.3-0.6% of said polysaccharide with the balance being water. Polysaccharide concentrations below 0.3 p-Jf fail to guarantee long-term stability of the suspension, and concentrations above 0.6 / £ are undesirable because a gel is formed which makes the suspension poorly resuspended.

Edellä esitetyllä polysakkaridilla stabiloidut bariumsulfaatin vesisuspensiot voivat sisältää 5-7 p-J? glyseriiniä. Glyseriinilisäys parantaa suspension stabiliteettia alhaisissa lämpötiloissa -200°C:een.Aqueous suspensions of barium sulfate stabilized with the above polysaccharide may contain 5-7 p-J? glycerin. The addition of glycerin improves the stability of the suspension at low temperatures to -200 ° C.

* 3 57209* 3 57209

Edellä esitetyn polysakkaridin suojelemiseksi mikrobien vaikutuksilta suspension pitkäaikaisen varastoinnin aikana voidaan suspensioon lisätä 0,001 p—JS säilöntäaineena mertiolaattia määrässä 0,001 paino-#.To protect the above polysaccharide from the action of microbes during long-term storage of the suspension, 0.001 p-JS may be added to the suspension as a preservative in an amount of 0.001 wt%.

Edellä esitetyllä polysakkaridillä stabiloidun bariumsulfaatin vesisuspensioiden sedimentoitumiskestävyyttä ja niiden uudelleen suspendoitavuutta kuvataan tarkemmin seuraavassa taulukossa.The sedimentation resistance and resuspensibility of aqueous suspensions of barium sulfate stabilized with the above polysaccharide are described in more detail in the following table.

Ta vilukkoHe flashes

Bariumsulfaatti- Sedimentoitumis- Uudelleen suspendoi- Stabiliteetti vesisuspensio stabiliteetti tavuus varastoinnin uudelleen sus- barium- stabilisaat- päiviä_ jälkeen (400 päivää) pendoinnin jäl- sulfaattia, % toria, % 1 10 30 6θ 90 keen (päiviä) 5 0,3 stabiili helppo 7-10 10 0,3 " " " 20 0,3 " " " 30 0,6 " M " U0 0,6 " "Barium sulphate- Sedimentation- Resuspension- Stability in aqueous suspension Stability Availability after re-storage- Sublium-stabilize- days_ (400 days) after resuspension of sulphate,% thorium,% 1 10 30 6θ 90 keen (days) 5 0.3 stable easy 7 -10 10 0.3 "" "20 0.3" "" 30 0.6 "M" U0 0.6 ""

Keksinnön mukaisesti stabiloitua bariumsulfaatin vesisuspensiota suositellaan mahan ja suolen alueen röntgenografia-aineeksi.According to the invention a stabilized aqueous suspension of barium sulphate, gastric and intestinal area röntgenografia material.

Kliiniset kokeet bariumsulfaatin 2C-#:isella ja 40-#:isella vesisuspensiolla, joka oli stabiloitu ^-l,3-Of-l,U-o(-l,6-glukopyranosyyliglukoosi-homopolysakka-ridilla, osoittivat, että suspensiolla oli hyvät röntgendiagnostiset ominaisuudet. Suspensio oli hyvän makuista, se ei ärsyttänyt mahan ja suolen limakalvoja eikä sillä ollut haittavaikutuksia ruoansulatussysteemiin.Clinical experiments with 2C - # and 40 - # aqueous suspensions of barium sulfate stabilized with β-1,3-Of-1,10 (-1,6-glucopyranosylglucose homopolysaccharide) showed that the suspension had good X-ray diagnostic properties. . the suspension was a good-tasting, it is irritating to the mucous membranes of the stomach and intestine and did not have adverse effects in the digestive system.

Keksinnön mukaisesti käytetty stabilisaattori /3-1,3-o("l,4-0(-1,6-gluko-pyranosyyliglukoosi-hamopolysakkaridi on tunnettu aine, jota saadaan mikrobiologisesti Aureobasidium pullulans-mikro-organi smista.The stabilizer β-1,3-o ("1,4-O (-1,6-glucopyranosylglucose hamopolysaccharide) used according to the invention is a known substance obtained microbiologically from the microorganism Aureobasidium pullulans.

Seuraava esimerkki kuvaa keksintöä.The following example illustrates the invention.

Esimerkki 20 g barivBvsulfaattia sekoitetaan 60 g:aan/3-l,3-oi-l,4-of-l,6-glukopyrano-syyliglukoosi-homopolysakkaridin 0,3~#:ista liuosta (pH 6,8-7,4) ja dispergoidaan sekoittajassa 2 minuuttia nopeudella 7000 rpm. Näin saatu suspensio on homogeeninen ja stabiili jopa 3 kuukauden varastoinnin ajan. Mainittu suspensio on helposti suspendoitavissa uudelleen koko varastointi jakson ajan (400 päivää) ja pysyy homogeenisena uudelleen suspendoinnin jälkeen muutamia päiviä.Example 20 g of barivium sulfate are mixed with 60 g of a 0.3 ~ solution of β-1,3-o-1,4-of-1,6-glucopyranoylglucose homopolysaccharide (pH 6.8-7.4 ) and dispersed in a mixer for 2 minutes at 7000 rpm. The suspension thus obtained is homogeneous and stable for up to 3 months of storage. Said suspension is easily resuspended throughout the storage period (400 days) and remains homogeneous after resuspension for a few days.

¥ , t¥, t

FI760878A 1976-04-01 1976-04-01 REFRIGERATION FOR THE SUSPENSION OF BARIUM SULPHATE IN WATER FI57209C (en)

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FI760878 1976-04-01

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FI57209C true FI57209C (en) 1980-07-10

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